SIEMENS Siprotec 4 Protection Relay

Product Details:

rotection functions

• Overcurrent protection

• Directional overcurrent protection

• Sensitive directional ground-fault detection

• Displacement voltage

• Intermittent ground-fault protection

• Directional intermittent ground fault protect

• High-impedance restricted ground fault

• Inrush restraint

• Motor protection

• Overload protection

• Temperature monitoring

• Under-/overvoltage protection

• Under-/overfrequency protection

• Rate-of-frequency-change protection

• Power protection (e.g. reverse, factor)

• Undervoltage controlled reactive power protection

• Breaker failure protection

• Negative-sequence protection

• Phase-sequence monitoring

• Synchro-check

• Fault locator

• Lockout

• Auto-reclosure

Control functions/programmable logic

• Commands for control of CB and of isolators

• Graphical visualization of switch positions

• Control via keyboard, binary inputs, DIGSI 4 or SCADA system

• User-defined logic with CFC (e.g. interlocking)

Monitoring functions

• Operational measured values V, I, f

• Energy metering values Wp,Wq

• Circuit-breaker wear monitoring

• Slave pointer

• Trip circuit supervision

• Fuse failure monitor

• 8 oscillographic fault records

• Motor statistics

Communication interfaces

• System interface protocols: IEC 60870-5-103, IEC 61850, Modbus RTU, DNP3

• Electrical and optical interface

• RSTP (Redundancy Protocol for Ethernet)

• Service interface for DIGSI 4 or RTD-Box

• Front USB interface for DIGSI 4

• Time synchronization via IRIG B, DCF77

Hardware

• Spring-type terminals

• 4 current transformers

• 4 voltage transformers

• 16/22/36 binary inputs

• 7/10/23 output relays

• Graphic or 8 line display

FAQ

1. How can Reliserv help you source the Siemens 7SJ66 Feeder and Overcurrent Protection Relays efficiently?
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2. Can Reliserv provide technical support for Siemens 7SJ66 Feeder and Overcurrent Protection Relays installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens 7SJ66 Feeder and Overcurrent Protection Relays in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens 7SJ66 Feeder and Overcurrent Protection Relays?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens 7SJ66 Feeder and Overcurrent Protection Relays in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

The 7SD610 relay is a differential protection relay suitable for all types of applications and incorporating all those functions required for differential protection of lines, cables, and transformers. Transformers and compensation coils within the differential protection zone are protected by means of integrated functions, which were previously to be found only in transformer differential protection. It is also well-suited for complex applications such as series and parallel compensation of lines and cables.

 

It is designed to provide differential and directional backup protection for all voltage levels and types of networks. The relay features high speed and phase-selective short circuit measurement. The unit is thus suitable for single-phase and three-phase fault clearance.

 

Digital data communication for differential current measurement is effected via fiber-optic cables, networks or pilot wires connections so that the line ends can be quite far apart. The serial protection interface (R2R interface) of the relay can flexibly be adapted to the requirements of all existing communication media. If the communication method is changed, flexible retrofitting of communication modules to the existing configuration is possible.

 

Apart from the main protection function, i.e. the differential protection, the 7SD610 has a full range of configurable emergency and/or backup protection functions such as phase and earth over current protection with directional elements if voltage transformers are connected. Overload, under and over-voltage/frequency and breaker failure protection round off the functional scope of the 7SD610.

Protection Functions

• Differential protection for universal use with power lines and cables on all voltage levels with phase-segregated measurement (87L)
• Two line ends capability
• Suitable for transformers in protected zone (87T)
• Restricted earth-fault protection (87N) if a transformer is within the protection zone
• Well-suited for serial compensated lines
• Two independent differential stages one stage for sensitive measuring for high resistance faults and one stage for high current faults and fast fault clearance
• Breaker-failure protection (50BF)
• Phase and earth overcurrent protection with directional element (50, 50N, 51, 51N, 67, 67N)
• Phase-selective intertripping (85)
• Overload protection (49)
• Over/undervoltage protection (59/27)
• Over/underfrequency protection (81O/U)
• Auto-reclosure single/three-pole (79)

FAQ

1. How can Reliserv help you source the Siemens Siprotec 4 Siprotec 7SD610 Differential Protection Relay efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 4 Siprotec 7SD610 Differential Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 Siprotec 7SD610 Differential Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 Siprotec 7SD610 Differential Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 Siprotec 7SD610 Differential Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

FunctionsBusbar protection functions

• Busbar differential protection

• Selective zone tripping

• Very short tripping time (<15 ms)

• Extreme stability against external fault, short saturation-free time (≥2 ms)

• Phase-segregated measuring systems

• Integrated check zone

• 48 bays can be configured

• 12 busbar sections can be protected

• Bay-selective intertripping

Breaker failure protection functions

• Breaker failure protection (single-phase with/without current)

• 5 operation modes, selectable per bay

• Separate parameterization possible for busbar and line faults

• Independently settable delay times for all operation modes

• 2-stage operation bay trip repeat/trip busbar

• Intertrip facility (via teleprotection interface)

• “Low-current” mode using the circuitbreaker auxiliary contacts

Additional protection functions

• End-fault protection with intertrip or bus zone trip

• Backup overcurrent protection per bay unit (definite-time or inverse-time)

• Independent breaker failure protection per bay unit

Features

• Distributed or centralized installation

• Easy expansion capability

• Integrated commissioning aids

• Centralized user-friendly configuration/parameterization with DIGSI

• Universal hardware

Communication interfaces

• FO interface
  – IEC 60870-5-103 protocol

• Electrical interface
  – IEC 61850 protocol with EN 100 module (firmware V4.6)

FAQ

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2. Can Reliserv provide technical support for Siemens Siprotec 4 Siprotec 7SS52 Differential Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 Siprotec 7SS52 Differential Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 Siprotec 7SS52 Differential Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 Siprotec 7SS52 Differential Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SS52

Product Details:

 

Overcurrent protection

SIPROTEC 7SJ80

The SIPROTEC 7SJ80 relays can be used for feeder protection of high and medium-voltage networks with grounded, low-resistance grounded, isolated or a compensated neutral point. The relays have all the required functions to be applied as a backup relay to a transformer differential relay. The SIPROTEC 7SJ80 features “flexible protection functions”. Up to 20 additional protection functions can be created by the user. Therefore, protection of change for frequency or reverse power protection can be realized, for example. The relay provides circuit-breaker control, further switching devices and automation functions. The integrated programmable logic (CFC) allows the user to add own functions, e.g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages.

Features

Hardware 

• 4 current transformers
• 0/3 voltage transformers
• 3/7/11 binary inputs (thresholds configurable using software)
• 5/8 binary outputs (2 changeover / form C contacts)
• 1 life contact
• Pluggable current and voltage terminals.

Functions

·         Definite and inverse time-overcurrent protection (phase/ground) (50, 50N, 51, 51N)

·         Directional time-overcurrent protection (phase/ground) (67, 67N)

·         Directional sensitive ground fault protection (67Ns, 50Ns)

·         Overvoltage protection, zero-sequence system (59N)

·         High-impedance restricted ground-fault protection (87N)

·         Inrush restraint

·         Trip-circuit supervision (74TC)

·         Undercurrent monitoring (37)

·         Overload protection (49)

·         Undervoltage/overvoltage protection (27/59)

·         Forward-power, reverse-power protection (32)

·         Power factor (55)

·         Overfrequency/underfrequency protection(81O/U)

·         Circuit-breaker failure protection (50B/F)

·         Intermittent ground fault protection

·         Directional intermittent ground fault protection (67Ns)

·         Unbalanced-load protection (46)

FAQ

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2. Can Reliserv provide technical support for Siemens 7SJ80 SIPROTEC Compact Numerical Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens 7SJ80 SIPROTEC Compact Numerical Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty for Siemens 7SJ80 SIPROTEC Compact Numerical Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

Additional Information:

• Item Code: 7sj80
• Production Capacity: >50000 UNITS per quarter
• Delivery Time: 4-5 business days
• Packaging Details: As per client's requirement

Product Details:

The SIPROTEC 7SA522 relay provides full-scheme distance protection and incorporates all functions usually required for the protection of a power line. The relay is designed to provide fast and selective fault clearance on transmission and subtransmission cables and overhead lines with or without series capacitor compensation. The power system star point can be solid or resistance grounded (earthed), resonant-earthed via Peterson coil or isolated. The SIPROTEC 7SA522 is suitable for single-pole and three-pole tripping applications with and without tele (pilot) protection schemes.

The SIPROTEC 7SA522 incorporates several protective functions usually required for transmission line protection.

• High-speed tripping time

• Suitable for cables and overhead lines with or without series capacitor compensation

• Self-setting power swing detection for power swing frequencies up to 7 Hz

• Digital relay-to-relay communication for two and three terminal topologies

• Adaptive auto-reclosure (ADT)

FunctionsProtection functions

• Non-switched distance protection with 6 measuring systems (21/21N)

• High resistance ground (earth)-fault protection for single and three-phase tripping (50N, 51N, 67N)

• Tele (pilot) protection (85)

• Fault locator (FL)

• Power swing detection / tripping (68/68T)

• Phase-overcurrent protection (50/51)

• STUB bus overcurrent protection (50STUB)

• Switch-onto-fault protection (50HS)

• Over/undervoltage protection (59/27)

• Over/underfrequency protection (81O/U)

• Auto-reclosure (79)

• Synchro-check (25)

• Breaker failure protection (50BF)

Control functions

• Commands for control of CB and isolators

Monitoring functions

• Trip circuit supervision (74TC)

• Self-supervision of the relay

• Measured-value supervision

• Event logging/fault logging

• Oscillographic fault recording

• Switching statistics

Front design

• User-friendly local operation with numeric keys

• LEDs for local alarm

• PC front port for convenient relay setting

• Function keys

Communication interfaces

• Front interface for connecting a PC

• System interface for connecting to a control system via various protocols
  - IEC 61850 Ethernet
  - IEC 60870-5-103 protocol
  - PROFIBUS-FMS/-DP
  - DNP 3.0

• 2 serial protection data interfaces for tele (pilot) protection

• Rear-side service/modem interface

• Time synchronisation via IRIG B or DCF77 or system interface

Hardware

• Binary inputs: 8/16/24

• Output relays: 16/24/32

• High-speed trip outputs: 5 (optional)

FAQ

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2. Can Reliserv provide technical support for Siemens SIPROTEC 4 7SA522 Distance Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 4 7SA522 Distance Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery. 

Product Details:

The SIPROTEC 7SA64 distance protection relay is a universal relay for protection, control and automation with a graphic display on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs. High-speed tripping time

• Impedance setting range allows very small settings for the protection of very short lines
• Self-setting detection for power swing frequencies up to 7 Hz
• Current transformer saturation detector prevents non-selective tripping by distance protection in the event of CT saturation.
• Phase-segregated teleprotection for improved selectivity and availability
• Digital relay-to-relay communication by means of an integrated serial protection data interface
• Adaptive auto-reclosure (ADT)

Protection Functions

• Non-switched distance protection with 6 measuring systems (21/21N)
• High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
• Earth-fault detection in isolated and resonant-earthed networks
• Tele (pilot) protection (85)
• Fault locator (FL)
• Power-swing detection/tripping (68/68T)
• Phase-overcurrent protection (50/51)
• Switch-onto-fault protection (50HS)
• STUB bus overcurrent protection (50STUB)
• Overvoltage/undervoltage protection (59/27)
• Over/underfrequency protection (81O/U)
• Auto-reclosure (79)
• Synchro-check (25)
• Breaker failure protection (50BF)
• Thermal overload protection (49)

Control Functions

• Commands for control of c.b. and isolators

Monitoring Functions

• Trip circuit supervision (74TC)
• Self-supervision of the relay
• Measured-value supervision
• Event logging
• Fault logging
• Oscillographic fault recording
• Switching statistics

Front design

• Easy operation with numeric keys
• Function keys
• LEDs for local alarm
• PC front port for convenient relay setting

Communication Interfaces

• Front interface for connecting a PC
• System interface for connecting to a control system via various protocols
• - IEC 60870-5-103 protocol
• - PROFIBUS-FMS/-DP
• - DNP 3.0
• - IEC 61850 Ethernet
• 1 serial protection data interface for teleprotection
• Rear-side service/modem interface
• Time synchronization via - IRIG-B or DCF 77 or - System interface

FAQ

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2. Can Reliserv provide technical support for Siemens SIPROTEC 4 7SA64 Numerical Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 4 7SA64 Numerical Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 4 7SA64 Numerical Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 4 7SA64 Numerical Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

FunctionsProtection functions

• Single and/or three-pole auto-reclosure

• Synchro-check with live/dead line/bus measurement

• Closing under asynchronous conditions (consideration of CB operating time)

• Circuit-breaker failure protection with two stages (single and three-pole with/without current)

• End-fault protection

• Pole-discrepancy protection

• Overvoltage/undervoltage protection

Control function

• Commands f. ctrl. of CB and isolators

Monitoring functions

• Operational measured values

• Self-supervision of the relay

• Event buffer and fault protocols

• Oscillographic fault recording

• Monitoring of CB auxiliary contacts

• Switching statistics

Features

• All functions can be used separately

• Initiation/start by phase-segregated or 3-pole trip commands

• Auto-reclosure for max. 8 reclose cycles

• Evolving/sequential trip recognition

• Auto-reclosure with ADT, DLC, RDT

• Synchro-check with ΔV, Δ , Δf measurement

• Breaker failure protection with highly secure 2-out-of-4 current check detectors

• Breaker failure protection with short reset time and negligible overshoot time

Communication interfaces

• Front interface for connecting a PC

• System interface for connecting to a control system via various protocols
  – IEC 61850 Ethernet
  – IEC 60870-5-103 protocol
  – PROFIBUS-FMS/-DP
  – DNP 3.0

• Rear-side service/modem interface

• Time synchronization via
  – IRIG-B or DCF77 or system interface

FAQ

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2. Can Reliserv provide technical support for Siemens SIPROTEC 7VK61 Protective Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 7VK61 Protective Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 7VK61 Protective Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 7VK61 Protective Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7VK61

Product Details:

Transformer differential protection

Siemens Siprotec 7UT612 Transformer Relay

The Siemens Siprotec 7UT612 Transformer Relay differential protection relay are used for fast and selective fault clearing of short-circuits in transformers of all voltage levels and also in rotating electric machines like motors and generators, for short lines and busbars. The protection relay can be parameterized for use with threephase and single-phase transformers.

Features

The specific application can be chosen by parameterization. In this way an optimal adaption of the relay to the protected object can be achieved.

In addition to the differential function a backup overcurrent protection for 1 winding / star point is integrated in the relay. Optionally, a low or high-impedance restricted earth-fault protection, a negative sequence protection and a breaker failure protection can be used. With external temperature monitoring boxes (thermo-boxes) temperatures can be measured and monitored in the relay. Therefore, complete thermal monitoring of a transformer is possible, e.g. hot-spot calculation of the oil temperature. The relays provide easy-to-use local control and automation functions. The integrated programmable logic (CFC) allows the users to implement their own functions, e.g. for the automation of switchgear (interlocking). User-defined messages can be generated as well. The flexible communication interfaces are open for modem communication architectures with control system.

The protection relay can be parameterized for use with three-phase and single-phase transformers. In addition to this, a thermal replica is integrated for the supervision of the ohmic losses in the plant.

Hardware

• 7 current transformers, 1 IEE
• 3 binary inputs
• 4 binary outputs
• Text display
• Surface-mounting or flush-mounting housing

Communication interfaces

• System port 
  – IEC 61850

– IEC 60870-5-103 

– PROFIBUS-DP 
– DNP 3.0

– MODBUS RTU

• Service port

– DIGSI 4

– Modem

– Thermobox

• Front port

– DIGSI 4

• Time synchronization via IRIG B, DCF77 or system interface

 

Functions

Function overview

• Differential protection for two-winding transformers (3-/1-phase)
• Differential protection for motors and generators
• Differential protection for short lines
• Differential protection for busbars up to 7 feeders (phase-segregated or with summation CT)

Protection functions

• Differential protection with phase-segregated measurement
• Sensitive measuring stage for low-fault currents
• Fast tripping for high-fault currents
• Restraint against inrush of the transformer
• Phase/ground-overcurrent protection
• Overload protection with or without temperature measurement
• Negative-sequence protection
• Breaker failure protection
• Low-or high-impedance restricted earth fault (REF)

Control functions

• Commands for control of c.b. and isolators
• Control via keyboard, binary inputs, DIGSI 4 or SCADA system
• User-defined logic with CFC

Monitoring functions

• Self-supervision of the relay
• Trip circuit supervision
• Oscillographic fault recording
• Permanent differential and restraint current measurement, extensive scope of operational values

Siemens Siprotec 7UT612 Transformer Relay

 

 

Additional Information:

• Item Code: 7UT612
• Production Capacity: 50000 per quarter
• Delivery Time: 4-5 Business days
• Packaging Details: As per client's requiremnt

Product Details:

Functions Protection functions

• Non-switched distance protection with 6 measuring systems (21/21N)

• High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)

• Earth-fault detection in isolated and resonant-earthed networks

• Tele (pilot) protection (85)

• Fault locator (FL)

• Power-swing detection/tripping (68/68T)

• Phase-overcurrent protection (50/51)

• Switch-onto-fault protection(50HS)

• STUB bus overcurrent protection (50STUB)

• Overvoltage/undervoltage protection(59/27)

• Over/underfrequency protection (81O/U)

• Auto-reclosure (79)

• Synchro-check (25)

• Breaker failure protection (50BF)

• Thermal overload protection (49)

Control functions

• Commands for control of c.b. and isolators

Monitoring functions

• Trip circuit supervision (74TC)

• Self-supervision of the relay

• Measured-value supervision

• Event logging

• Fault logging

• Oscillographic fault recording

• Switching statistics

Front Design

• Easy operation with numeric keys

• Function keys

• LEDs for local alarm

• PC front port for convenient relay setting

Communication interfaces

• Front interface for connecting a PC

• System interface for connecting to a control system via various protocols
  - IEC 60870-5-103 protocol
  - PROFIBUS-FMS/-DP
  - DNP 3.0
  - IEC 61850 Ethernet

• 1 serial protection data interface for teleprotection

• Rear-side service/modem interface

• Time synchronization via - IRIG-B or DCF 77 or - System interface

FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 7SA61 Distance Protection Numerical Relay efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens SIPROTEC 7SA61 Distance Protection Relays.

2. Can Reliserv provide technical support for Siemens SIPROTEC 7SA61 Distance Protection Numerical Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 7SA61 Distance Protection Numerical Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 7SA61 Distance Protection Numerical Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 7SA61 Distance Protection Numerical Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SA61

Product Details:

Electric arcs are among the most dreaded fault scenarios in power supply engineering. They can be caused by a multitude of factors, such as aging of the insulation, environmental conditions as well as operating errors. Electric arcs can cause heavy damage to switchgear and present a serious hazard to operating personnel.

 

The SIPROTEC 5 arc protection detects electric arcs through an optical sensor. Arcs are detected reliably and quickly as they develop, and the protective device can trip immediately and without delay times.The arc protection module is part of the new SIPROTEC 5 series of modular, flexible and intelligent bay devices and can be used in the following device types:

· SIPROTEC 7SJ8

· SIPROTEC 7SA8

· SIPROTEC 7SD8

· SIPROTEC 7SL8

· SIPROTEC 7VK8

· SIPROTEC 7UT8

· SIPROTEC 7SK8

· SIPROTEC 7UM8

Functions:

· Reliable arc detection

· Extremely fast tripping time

· Minimization of thermal damage

· Higher personal safety

· Minimization of downtimes

· EMI safety thanks to purely optical sensors

· Quick and easy retrofitting

FAQ

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   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens 6MD61 Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens 6MD61 Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens 6MD61 Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

The 6MD66 high-voltage bay control unit is the control unit for high voltage bays from the SIPROTEC 4 relay series. Because of its integrated functions, it is an optimum, low-cost solution for high-voltage switch bays. The 6MD66 high-voltage bay controller unit also has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is performed in a standardised way with the easy-to-use DIGSI 4 configuration tool.

 

For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list display or switch gear control. The operator panel can be mounted separately from the unit, if required. Thus, flexibility with regard to the mounting position of the unit is ensured. Integrated key-operated switches control the switching authority and authorisation for switching without interlocking. High-accuracy measurement (± 0.5 %) for voltage, current and calculated values P and Q are another feature of the unit.

Application

• Integrated synchro-check for synchronized closing of the circuit-breaker
• Breaker-related protection functions (Breaker Failure 50BF, Auto-reclosure 79)
• Automation can be configured easily by graphic means with CFC
• Flexible, powerful measured-value processing
• Connection for 4 voltage transformers, 3 current transformers, two 20 mA transducers
• Volume of signals for high voltage
• Up to 14 1½-pole circuit-breakers can be operated
• Up to 11 2-pole switching devices can be operated
• Up to 65 indication inputs, up to 45 command relays
• Can be supplied with 3 volumes of signals as 6MD662 (35 indications, 25 commands), 6MD663 (50 indications, 35 commands) or 6MD664 (65 indications, 45 commands); number of measured values is the same
• Switchgear interlocking
• Inter-relay communication with other devices of the 6MD66 series, even without a master station interface with higher level control and protection
• Suitable for redundant master station
• Display of operational measured values V, I, P, Q, S, f, cos (power factor) (single and three-phase measurement)
• Limit values for measured values
• Can be supplied in a standard housing for cubicle mounting or with a separate display for free location of the operator elements
• 4 freely assignable function keys to speed up frequently recurring operator actions

Communication interfaces

• IEC 61850 Ethernet
• IEC 60870-5-103 protocol
• PROFIBUS-FMS/-DP
• Service interface forDIGSI 4 (modem)
• Front interface forDIGSI 4
• Time synchronization via IRIGB/DCF77

FAQ

1. How can Reliserv help you source the Siemens Siprotec 4 6MD66 Bay Controller efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 4 6MD66 Bay Controller installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 6MD66 Bay Controller in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 6MD66 Bay Controller?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 6MD66 Bay Controller in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

FunctionsBasic version

• Stator earth-fault protection

• Sensitive earth-fault protection

• Stator overload protection

• Overcurrent-time protection (either definite-time or inverse-time)

• Definite-time overcurrent-time protection, directional

• Undervoltage and overvoltage protection

• Underfrequency and overfrequency protection

• Reverse power protection

• Overexcitation protection

• External trip coupling

Standard version - Scope of basic version plus

• Forward-power protection

• Underexcitation protection

• Negative-sequence protection

• Breaker failure protection

Full version - Scope of standard version plus:

• Inadverdent energization protection

• 100%- stator earth-fault protection with 3rd harmonic

• Impedance protection

Asynchronous motor - Scope of standard version plus

• Motor starting time supervision

• Restart inhibit (without underexcitation protection)

Monitoring functions

• Trip circuit supervision

• Fuse failure monitor

• Operational measured values V, I, f,…

• Every metering value Wp,Wq

• Time metering of operation hours

• Self-supervision of relay

• 8 oscillographic fault records

Communication interfaces

• System interface
  - IEC 60870-5-103 protocol
  - PROFIBUS-DP
  - MODBUS RTU
  - DNP 3.0

FAQ

1. How can Reliserv help you source the Siemens Siprotec 4 7UM61 Generator And Motor Relay efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens Siprotec 4 7UM61 Generator And Motor Relays.

2. Can Reliserv provide technical support for Siemens Siprotec 4 7UM61 Generator And Motor Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 7UM61 Generator And Motor Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 7UM61 Generator And Motor Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 7UM61 Generator And Motor Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7um61

Product Details:

Functions Protection Functions

• Differential protection with phase segregated measurement (87L, 87T)

• Restricted ground-fault protection (87N) if a transformer is within the protection zone

• Sensitive measuring stage for high-resistance faults

• Non-switched distance protection with 6 measuring systems (21/21N)

• High resistance ground (earth)-fault protection for single and three-pole tripping (50N/51N/67N)

• Phase-selective intertripping (85)

• Ground-fault detection in isolated and resonant-grounded networks

• Tele (pilot) protection (85/21, 85/67N)

• Weak-infeed protection (27WI)

• Fault locator (FL)

• Power swing detection/tripping (68/68T)

• 3-stage overcurrent protection (50, 50N, 51, 51N)

• STUB bus protection (50 STUB)

• Switch-onto-fault protection (50HS)

• Over/undervoltage protection (59/27)

• Over/underfrequency protection (81O/U)

• Auto-reclosure (79), Synchro-check (25)

• Breaker failure protection (50BF)

• Overload protection (49)

• Lockout function (86)

Control functions

• Commands for control of circuit-breakers (isolators)

Monitoring functions

• Self-supervision of relay and protection data (R2R) communication

• Trip circuit supervision (74TC)

• Measured-value supervision

• Oscillographic fault recording

• Event logging/fault logging

• Switching statistics

Front design

• User-friendly local operation

• PC front port for relay setting

• Function keys and 14 LEDs f. local alarm

Communication interfaces

• 2 serial protection data (R2R) interfaces for ring and chain topology

• Front interface for connecting a PC

• System interface for connection to a control system via various protocols
  IEC 61850 Ethernet
  IEC 60870-5-103
  PROFIBUS-FMS/-DP and DNP 3.0

• Rear-side service/modem interface

• Time synchronization via IRIG-B or DCF77 or system interface

FAQ

1. How can Reliserv help you source the Siemens Siprotec 7SD52/53 Relay efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 7SD52/53 Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 7SD52/53 Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 7SD52/53 Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 7SD52/53 Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SD52-53

Product Details:

Functions Protection functions

• Overcurrent protection (definite-time/inverse-time/user-def.)

• Directional overcurrent protection (definite-time/inverse-time/user-def.)

• Sensitive dir. earth-fault detection

• Displacement voltage

• Intermittent earth-fault protection

• Directional intermittent ground fault protection

• High-impedance restricted earth fault

• Inrush restraint

• Motor protection

• Overload protection

• Temperature monitoring

• Under-/overvoltage protection

• Under-/overfrequency protection

• Rate-of-frequency-change protection

• Power protection (e.g. reverse, factor)

• Undervoltage controlled reactive power protection

• Breaker failure protection

• Negative-sequence protection

• Phase-sequence monitoring

• Synchro-check

• Auto-reclosure

• Fault locator

• Lockout

Control functions/programmable logic

• Commands for control of a circuit-breaker and of isolators

• Position of switching elements is shown on the graphic display

• Control via keyboard, binary inputs, DIGSI 4 or SCADA system

• User-defined logic with CFC (e.g. interlocking)

Monitoring functions

• Operational measured values V,l,f

• Energy metering values Wp,Wq

• Circuit-breaker wear monitoring

• Slave pointer

• Trip circuit supervision

• Fuse failure monitor

• 8 oscillographic fault records

• Motor Statistics

Communication interfaces

• System interface
  IEC 60870-5-103/ IEC 61850
  PROFIBUS-FMS/-DP
  DNP 3.0/MODBUS RTU

• Service interface for DIGSI 4 (modem)

• Front interface for DIGSI 4

• Time synchronization via IRIG B/DCF77

Hardware

• 4 current transformers

• 3/4 voltage transformers

• 8/11 binary inputs

• 8/6 output relays

FAQ

1. How can Reliserv help you source the Siemens Siprotec 7SJ62 Overcurrent Relay efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens Siprotec 7SJ62 Overcurrent Relays.

2. Can Reliserv provide technical support for Siemens Siprotec 7SJ62 Overcurrent Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 7SJ62 Overcurrent Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 7SJ62 Overcurrent Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 7SJ62 Overcurrent Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SJ62

Product Details:

Functions
Protection functions

• Differential protection for universal use with power lines and cables on all voltage levels with phase-segregated measurement (87L)

• Two line ends capability

• Suitable for transformers in protected zone (87T)

• Restricted earth-fault protection (87N) if a transformer is within the protection zone

• Well-suited for serial compensated lines

• Two independent differential stages: one stage for sensitive measuring for high resistance faults and one stage for high current faults and fast fault clearance

• Breaker-failure protection (50BF)

• Phase and earth overcurrent protection with directional element (50, 50N, 51, 51N, 67, 67N)

• Phase-selective intertripping (85)

• Overload protection (49)

• Over/undervoltage protection (59/27)

• Over/underfrequency protection (81O/U)

• Auto-reclosure single/three-pole (79)

Control functions

• Command inputs for control of CB and disconnectors (isolators)

Monitoring functions

• Self-supervision of the relay

• Trip circuit supervision (74TC)

• 8 oscillographic fault records

• CT-secondary current supervision

• Event logging / fault logging

• Switching statistics

Front design

• User-friendly local operation

• PC front port for convenient relay setting

• Function keys and 8 LEDs for local alarm

Communication interfaces

• 1 serial protection data (R2R) interface

• Front interface for PC connection

• System interface
  - IEC 61850 Ethernet
  - IEC 60870-5-103 protocol
  - PROFIBUS-DP, DNP 3.0 and MODBUS

• Service / modem interface (rear)

• Time synchronization via IRIG-B, DCF77 or system interface

Features

• Browser-based commissioning tool

• Direct connection to digital communication networks

FAQ

1. How can Reliserv help you source the Siemens Siprotec 7SD61 Cable Differential Protection Relay efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 7SD61 Cable Differential Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 7SD61 Cable Differential Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 7SD61 Cable Differential Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 7SD61 Cable Differential Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SD61

Product Details:

The 7SR11 series of relays provide overcurrent and earth fault protection. These relays are typically applied to provide the main protection on feeders and interconnectors and the backup protection on items of plant such as transformers. On distribution system circuits overcurrent and earth fault protection are often the only protection installed.

Features

The relay functionality allows highly flexible settings for current and time grading making it compatible with all types of overcurrent protection.

The relays are available in single and four pole variants housed in E4 cases with the IEC 61850 protocol option housed in an E6 case. Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits.

 

Protection, instrumentation and metering functionality is accessible via data comms channel(s). A front USB port for local PC connection or rear electrical RS485 port for remote connection is provided.

 

• Cold load settings
• Four settings groups
• Password protection - 2 levels
• User programmable logic
• Self-monitoring
• Circuit breaker trip counter and timer
• Fault, event and waveform records

Functions

Protection functions

• Undercurrent (37)
• Broken conductor (46BC)
• Negative phase sequence overcurrent (46NPS)
• Thermal overload (49)
• Overcurrent (50, 51)
• Earth fault (50G, 50N, 50SEF, 51G, 51N, 51SEF)
• High impedance REF (64H)

Supervision functions

• CT supervision (60CTS)
• Trip & close circuit supervision (74T/CCS)
• Inrush detector (81HBL2)
• Circuit breaker Fail (50BF)

Control functions

• Auto reclose (79)

Monitoring functions

• Primary/secondary current phases and earth 
• Historical demand record
• Positive phase sequence (PPS)  current
• Negative phase sequence (NPS)  current

FAQ

1. How can Reliserv help you source the Siemens Reyrolle 7SR110 Overcurrent Relay efficiently?
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2. Can Reliserv provide technical support for Siemens Reyrolle 7SR110 Overcurrent Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Reyrolle 7SR110 Overcurrent Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Reyrolle 7SR110 Overcurrent Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Reyrolle 7SR110 Overcurrent Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: SiemenReyrolle7SR11
• Production Capacity: 50000 items per quarter
• Delivery Time: 5-6 Business days
• Packaging Details: As per client's requirement

Product Details:

Multifunction Protection Relay

The SIPROTEC 4 7SJ61 relays can be used for line protection of high and medium voltage networks with earthed (grounded), low-resistance earthed, isolated or compensated neutral point. When protecting motors, the SIPROTEC 4 7SJ61 is suitable for asynchronous machines of all sizes. The relay performs all functions of backup protection supplementary to transformer differential protection

 

The relay provides control of the circuit breaker, further switching devices and automation functions. The integrated programmable logic (CFC) allows the user to implement their own functions, e. g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages. The flexible communication interfaces are open for modern communication architectures with control systems.

FAQ

1. How can Reliserv help you source the Siemens 7SJ61 Protection Relay efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens 7SJ61 Protection Relays.

2. Can Reliserv provide technical support for Siemens 7SJ61 Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens 7SJ61 Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens 7SJ61 Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens 7SJ61 Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SJ61

Product Details:

FunctionsProtection functions

• Overcurrent protection (definite-time/inverse-time/user-def.)

• Directional overcurrent protection (definite-time/inverse-time/user-def.)

• Sensitive dir./non-dir. earth-fault detection

• Displacement voltage

• Intermittent earth-fault protection

• High-impedance restricted earth fault

• Inrush restraint

• Motor protection

• Overload protection

• Temperature monitoring

• Under-/overvoltage protection

• Under-/overfrequency protection

• Breaker failure protection

• Negative-sequence protection

• Phase-sequence monitoring

• Auto-reclosure

• Fault locator

• Lockout

Control functions/programmable logic

• Flexible number of switching devices

• Position of switching elements is shown on the graphic display

• Local/remote switching via keyoperated switch

• Control via keyboard, binary inputs, DIGSI 4 or SCADA system

• Extended User-defined logic with CFC (e.g. interlocking)

Monitoring functions

• Operational measured values V, I, f,...

• Energy metering values Wp,Wq

• Circuit-breaker wear monitoring

• Slave pointer

• Trip circuit supervision

• Fuse failure monitor

• 8 oscillographic fault records

Communication interfaces

• System interface
  – IEC 60870-5-103/ IEC 61850
  – PROFIBUS-FMS/-DP
  – DNP 3.0/MODBUS RTU

• Service interface for DIGSI 4 (modem)

• Front interface for DIGSI 4

• Time synchronization via IRIG B/DCF77

FAQ

1. How can Reliserv help you source the Siemens Siprotec 4 7SJ63 BCPU Multifunction Protection Relay efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 4 7SJ63 BCPU Multifunction Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 7SJ63 BCPU Multifunction Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 7SJ63 BCPU Multifunction Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 7SJ63 BCPU Multifunction Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7SJ63

Product Details:

FunctionsHigh speed busbar transfer function

• Starting conditions
  - NORMAL condition
  - FAULT condition
  - Inadmissible under-voltage
  - Inadmissible under-frequency
  - Inadvertent CB open

• Switching sequences
  - PARALLEL Auto switching sequence
  - PARALLEL Half-Auto switching sequence
  - SIMULTANEOUS switching sequence
  - SEQUENTIAL sequence

• Transfer modes
  - FAST transfer mode
  - REAL-TIME FAST transfer mode
  - IN-PHASE transfer mode
  - RES-VOLT transfer mode
  - LONG-TIME transfer mode

• Single busbar and segmented single busbar supported

• High speed contact with approx.1ms for closing

• Permission of bi-direction switching settable

• Low voltage load-shedding settable

• CB de-coupling when OPEN failed

• NORMAL start locally or remotely

• Manual CB closing to block HSBT

• ON/OFF set locally or remotely

• HSBT test mode supported

Protection functions for tie-CB

• Overcurrent protection

• Ground overcurrent protection

• Overcurrent protection for busbar energization

• Ground overcurrent protection for busbar energization

Monitoring functions

• Self-supervision of the device

• Oscillographic fault recording

• Phase sequence of busbar voltage

• Voltage circuit of busbar and line

Communication interfaces

• PC front port for setting with DIGSI 4

• System interface
  - IEC 60870-5-103, redundant optional
  - IEC 61850, Ethernet
  - Profi bus-DP or Modbus RTU

• Service interface for DIGSI 4 (modem)

• Time synchronization via IRIG B/DCF 77

FAQ

1. How can Reliserv help you source the Siemens Siprotec 4 7VU683 High Speed Device efficiently?
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2. Can Reliserv provide technical support for Siemens Siprotec 4 7VU683 High Speed Device installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens Siprotec 4 7VU683 High Speed Device in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens Siprotec 4 7VU683 High Speed Device?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens Siprotec 4 7VU683 High Speed Device in India?
   Ans: Reliserv is known for authentic products and dependable service.

Additional Information:

• Item Code: 7VU683

Product Details:

Functions

Standard version
Scope of basic version plus:

• Inadvertent energization protection

• 100 %-stator earth-fault protection with 3rd harmonic

• Impedance protection

Full version
Scope of standard version plus:

• DC voltage protection

• Overcurrent protection during start-ups

• Earth-current differential protection

• Out-of-step protection

Additional version
Available for each version:

• Sensitive rotor earth-fault protection (1-3 Hz method)

• Stator earth-fault protection with 20 Hz voltage

• Rate-of-frequency-change protection

• Vector jump supervision

Monitoring functions

• Trip circuit supervision

• Fuse failure monitor

• Operational measured values V, I, f,…

• Every metering value Wp,Wq

• Time metering of operation hours

• Self-supervision of relay

• 8 oscillographic fault records

Communication interfaces

• System interface
  – IEC 61850 protocol
  – IEC 60870-5-103 protocol
  – PROFIBUS-DP
  –MODBUS RTU
  – DNP 3.0

Hardware

• Analog inputs

• 8 current transformers

• 4 voltage transformers

• 7/15 binary inputs

• 12/20 output relays

Front design

• User-friendly local operation

• 7/14 LEDs for local alarm

• Function keys

• Graphic display with 7UM623

FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 7UM62 Generator Protection Relay efficiently?
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2. Can Reliserv provide technical support for Siemens SIPROTEC 7UM62 Generator Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 7UM62 Generator Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 7UM62 Generator Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 7UM62 Generator Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service. 

Additional Information:

• Item Code: 7um62

Product Details:

The SIPROTEC 7SA6 distance protection relay is a universal relay for protection, control and automation with a graphic display on the basis of the SIPROTEC 4 system. Its high level of flexibility makes it suitable to be implemented at all voltage levels. With this relay you are ideally equipped for the future: it offers security of investment and also saves on operating costs.

High-speed tripping time

Impedance setting range allows very small settings for the protection of very short lines

Self-setting detection for power swing frequencies up to 7 Hz

Current transformer saturation detector prevents non-selective trapping by distance protection in the event of CT saturation.

Phase-segregated teleportation for improved selectivity and availability

Digital relay-to-relay communication by means of an integrated serial protection data interface

Adaptive auto-reclosure (ADT)

Protection functions

• Non-switched distance protection with 6 measuring systems (21/21N)
• High resistance earth-fault protection for single and three-phase tripping (50N, 51N, 67N)
• Earth-fault detection in isolated and resonant-earthed networks
• Tele (pilot) protection (85)
• Fault locator (FL)
• Power-swing detection/tripping (68/68T)
• Phase-overcurrent protection (50/51)
• STUB bus overcurrent protection (50STUB)
• Switch-onto-fault protection(50HS)
• STUB bus overcurrent protection (50STUB)
• Overvoltage/undervoltage protection(59/27)
• Over/underfrequency protection (81O/U)
• Auto-reclosure (79)
• Synchro-check (25)
• Breaker failure protection (50BF)
• Thermal overload protection (49)

Control functions

• Commands for control of c.b. and isolators

Monitoring functions

• Trip circuit supervision (74TC)
• Self-supervision of the relay
• Measured-value supervision
• Event logging
• Fault logging
• Oscillographic fault recording
• Switching statistics

Front Design

• Easy operation with numeric keys
• Function keys
• LEDs for local alarm
• PC front port for convenient relay setting

Communication interfaces

• Front interface for connecting a PC
• System interface for connecting to a control system via various protocols
  • IEC 60870-5-103 protocol
  • PROFIBUS-FMS/-DP
  • DNP 3.0
  • IEC 61850 Ethernet
• 1 serial protection data interface for teleportation
• Rear-side service/modem interface

Time synchronization via - IRIG-B or DCF 77 or - System interface

FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 7SA63 Distance Protection Relays efficiently?
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2. Can Reliserv provide technical support for Siemens SIPROTEC 7SA63 Distance Protection Relays installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 7SA63 Distance Protection Relays in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 7SA63 Distance Protection Relays?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 7SA63 Distance Protection Relays in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

The 7VE61 and 7VE63 paralleling devices of the SIPROTEC 4 family are multifunctional compact units used for paralleling power systems and generators.

Their technical design ensures highly reliable paralleling due to their 1-channel or 2-channel measurement method and their hardware design. This is supported by numerous monitoring functions. The units automatically detect the operating conditions. The response to these conditions depends on settings. In "synchronous network switching" mode, the frequency difference is measured with great accuracy. If the frequency difference is almost zero for a long enough time, the networks are already synchronous and a larger making angle is permissible.

If the conditions are asynchronous, as is the case when synchronizing generators, the generator speed is automatically matched to the system frequency and the generator voltage to the system voltage. The connection is then made at the synchronous point, allowing for circuit-breaker make-time.

The Siemens Siprotec 4 Siprotec 7VE6 Relay paralleling device is a 1-channel unit (paralleling function + synchro-check) for use with small to medium-size generators and power systems. It is more reliable than 1-channel paralleling devices. It can also be used for synchro-check, with parallel operation of three synchronization points.

For larger generators and power systems with high reliability requirements, the 2-channel 7VE63 is recommended. Two independent methods decide on the connection conditions. The unit also has the full control functions of the SIPROTEC 4 family. Voltage and frequency functions (V>, V<, f>, f

The integrated programmable logic functions (continuous function chart CFC) offer the user a high flexibility so that adjustments can easily be made to the varying requirements on the basis of special system conditions.

The flexible communication interfaces are open to modern communication architectures with control systems. Siemens Siprotec 4 Siprotec 7VE6 Relay

Basic functions :

• High reliability with a two-out-of-two design (1 ½ channels in 7VE61 and 2 channels in 7VE63)

• Paralleling of asynchronous voltage sources

• Balancing commands for voltage and speed (frequency)

• Paralleling of synchronous voltage sources

• Synchro-check function for manual synchronization

• Parameter blocks for use on several synchronizing points (7VE61 max. 4 and 7VE63 max. 8)

Additional functions

• Consideration of transformer vector group and tap changer

• Synchronization record (instantaneous or r.m.s. record)

• Commissioning support (CB-time measurement, test synchronization)

• Browser operation

• Full control functionality of SIPROTEC 4

• Analog outputs of operational measured values

• Functions for protection or network decoupling tasks

Protection functions (option)

• Undervoltage protection(27)

• Overvoltage protection (59)

• Frequency protection (81)

• Rate-of-frequency-change protection (81R)

• Jump of voltage vector monitoring

Monitoring functions

• Self-supervision of paralleling function

• Operational measured values

• 8 oscillographic fault records

Communication interfaces

• System interface
  − IEC 60870-5-103
  − IEC 61850 protocol
  − PROFIBUS-DP
  − MODBUS RTU and DNP 3.0

• Service interface for DIGSI 4 (modem)

• Front interface for DIGSI 4

• Time synchronization via IRIG B/DCF77

Siemens Siprotec 4 Siprotec 7VE6 Relay

Additional Information:

• Item Code: Siprotec-7VE6

Product Details:

Siemens SIPROTEC 6MD61 Bay Controller

The SIPROTEC 6MD61 enables in a simple, easy way to enhance the number of binary inputs and outputs in the switchgear. It can be used directly in the bay together with other SIPROTEC4 units and also together with SICAM PAS to serve as a central process connection. The IO-Box is based on the SIPROTEC 6MD63 and 6MD66 series, so it can be easily integrated in systems with other SIPROTEC 4 units. The IO-Box supports a wide range of demand for additional binary inputs (BI) and binary outputs (BO), starting from 20 BI+10 BO and going up to 80 BI+53 BO. All important standard communication protocols are supported. With IEC 61850-GOOSE communication, a direct information interchange with other SIPROTEC units is possible. For simplification and cost reduction, the IO-Box is available only without automation (CFC), without keypad and without display.

FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 6MD61 Bay Controller efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens SIPROTEC 6MD61 Bay Controllers.

2. Can Reliserv provide technical support for Siemens SIPROTEC 6MD61 Bay Controller installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 6MD61 Bay Controller in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 6MD61 Bay Controller?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 6MD61 Bay Controller in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

The Siemens Siprotec 7SD5 Protection Relay provides full scheme differential protection and incorporates all functions usually required for the protection of power lines. It is designed for all power and distribution levels and protects lines with two up to six line ends. The relay is designed to provide high-speed and phase-selective fault clearance. The relay uses fiber-optic cables or digital communication networks to exchange telegrams and includes special features for the use in multiplexed communication networks. Also, pilot wires connections can be used with an external converter. Siemens Siprotec 7SD5 Protection Relay This contributes toward improved reliability and availability of the electrical power system. The relay is suitable for single and three-phase tripping applications for two up to six line ends. 

The Siemens Siprotec 7SD5 Protection Relay has the following features:

• 2 full-scheme main protections in one unit (differential and distance protection)
• High-speed tripping 10 – 15 ms
• The serial protection interfaces (R2R interfaces) of the relays can flexibly be adapted to the requirements of all communication media available.
• If the communication method is changed, flexible retrofitting of communication modules to the existing configuration is possible.
• Tolerates loss of one data connection in a ring topology (routing in 120 ms). The differential protection scheme is fully available in a chain topology.
• Tolerates loss of one data connection in a ring topology (routing in 120 ms). The differential protection scheme is fully available in a chain topology.
• Browser-based commissioning tool.
• Fault locator for one and two terminal measurements for high accuracy on long lines with high load and high fault resistance.
• Capacitive charge current compensation increases the sensitivity of the differential protection on cables and long lines.

Protection Functions

• Differential protection with phase segregated measurement (87L, 87T)
• Restricted ground-fault protection (87N) if a transformer is within the protection zone
• Sensitive measuring stage for high-resistance faults
• Non-switched distance protection with 6 measuring systems (21/21N)
• High resistance ground (earth)-fault protection for single and three-pole tripping (50N/51N/67N)
• Phase-selective inter-tripping (85)
• Ground-fault detection in isolated and resonant-grounded networks
• Tele (pilot) protection (85/21, 85/67N)
• Weak-infeed protection (27WI)
• Fault locator (FL)
• Power swing detection/tripping (68/68T)
• 3-stage overcurrent protection (50, 50N, 51, 51N)
• STUB bus protection (50 STUB)
• Switch-onto-fault protection (50HS)
• Over/under voltage protection (59/27)
• Over/under frequency protection (81O/U)
• Auto-reclosure (79), Synchro-check (25)
• Breaker failure protection (50BF)
• Overload protection (49)
• Lockout function (86)

Control functions

• Commands for control of circuit-breakers (isolators)

Monitoring functions

• Self-supervision of relay and protection data (R2R) communication
• Trip circuit supervision (74TC)
• Measured-value supervision
• Time metering of operating hours
• Oscillographic fault recording
• Event logging/fault logging
• Switching Statistics

Front design

• User-friendly local operation
• PC front port for relay setting
• Function keys and 14 LEDs f. local alarm

Siemens Siprotec 7SD5 Protection Relay

Product Details:

The SIPROTEC 4 7SJ61 relays can be used for line protection of high and medium voltage networks with earthed (grounded), low-resistance earthed, isolated or compensated neutral point. When protecting motors, the SIPROTEC 4 7SJ61 is suitable for asynchronous machines of all sizes. The relay performs all functions of backup protection supplementary to transformer differential protection

 

The relay provides control of the circuit breaker, further switching devices and automation functions. The integrated programmable logic (CFC) allows the user to implement their own functions, e. g. for the automation of switchgear (interlocking). The user is also allowed to generate user-defined messages. The flexible communication interfaces are open for modern communication architectures with control systems.

Protection functions

• Overcurrent protection (definite-time/inverse-time/user-def.)
• Sensitive earth-fault detection
• Intermittent earth-fault protection
• High-impedance restricted earth fault
• Inrush - Current detection
• Motor protection
  • Undercurrent monitoring
  • Starting time supervision
  • Restart inhibit
  • Locked rotor
  • Load jam protection
• Overload protection
• Temperature monitoring
• Breaker failure protection
• Negative-sequence protection
• Auto-reclosure
• Lockout

FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 4 7SJ64 Protection Relay efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens SIPROTEC 4 7SJ64 Protection Relays.

2. Can Reliserv provide technical support for Siemens SIPROTEC 4 7SJ64 Protection Relay installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 4 7SJ64 Protection Relay in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 4 7SJ64 Protection Relay?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 4 7SJ64 Protection Relay in India?
   Ans: Reliserv is known for authentic products and dependable service.

Product Details:

The 6MD63 bay control unit is a flexible, easy-to-use control unit. It is optimally tailored for medium-voltage applications but can also be used in high-voltage substations.

The 6MD63 bay control unit has the same design (look and feel) as the other protection and combined units of the SIPROTEC 4 relay series. Configuration is also performed in a standardized way with the easy-to-use DIGSI 4 configuration tool.

For operation, a large graphic display with a keyboard is available. The important operating actions are performed in a simple and intuitive way, e.g. alarm list display or switchgear control. The operator panel can be mounted separately from the relay, if required. Thus, flexibility with regard to the mounting position of the unit is ensured.

Integrated key-operated switches control the switching authority and authorization for switching without interlocking.
FAQ

1. How can Reliserv help you source the Siemens SIPROTEC 4 6MD63 Bay Controller Unit efficiently?
   Ans: Reliserv offers fast, reliable supply with genuine Siemens SIPROTEC 4 6MD63 Bay Controller Units.

2. Can Reliserv provide technical support for Siemens SIPROTEC 4 6MD63 Bay Controller Unit installation and configuration?
   Ans: Yes, Reliserv provides expert guidance for installation and setup.

3. Why choose Reliserv for purchasing Siemens SIPROTEC 4 6MD63 Bay Controller Unit in bulk?
   Ans: Reliserv ensures competitive pricing and timely bulk delivery.

4. Does Reliserv offer warranty and after-sales service for Siemens SIPROTEC 4 6MD63 Bay Controller Unit?
   Ans: Yes, Reliserv provides warranty and responsive after-sales support.

5. What makes Reliserv a trusted source for Siemens SIPROTEC 4 6MD63 Bay Controller Unit in India?
   Ans: Reliserv is known for authentic products and dependable service.