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Siemens Reyrolle Numerical Relay

We are committed to high technology development and manufacture with full use of the latest software at all stages of product development, manufacture and testing. This can be seen in the latest digital products that REYROLLE offer and is continuing with new innovations as part of the Siemens group.

7SR12 Directional Over Current Relay, protection relay,siemens Overcurrent Relays

7SR12 Directional Over Current Relay, protection relay,siemens Overcurrent Relays
  • 7SR12 Directional Over Current Relay, protection relay,siemens Overcurrent Relays
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Product Details:

Voltage Typeon

Detail 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)

  • Directional Control of Overcurrent & Earth Fault (67)

  • High Impedance REF (64H)

  • Under/Over Voltage (27/59)

  • Negative Phase Sequence Voltage (47)

  • Voltage Controlled Overcurrent (51V)

  • Neutral Voltage Displacement (59N)

Supervision Functions
  • CT Supervision (60CTS)

  • Trip & Close Circuit Supervision (74T/CCS)

  • VT Supervision (60VTS)

  • Inrush Detector (81HBL2)

  • Circuit Breaker Fail (50BF)

Control Functions
  • Auto Reclose (79)

Monitoring Functions
  • Primary/Secondary Current Phases and Earth Direction

  • Primary/Secondary Line and Phase Voltages

  • Apparent Power and Power Factor

  • Real and Reactive Power

  • W Hr & VAr Hr Forward and Reverse

  • Historical Demand Record

  • Positive Phase Sequence (PPS) Voltage & Current

  • Negative Phase Sequence (NPS) Voltage & Current

  • Zero Phase Sequence (ZPS) Voltage

Features
  • 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

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7SR105 Motor Protection Relay, Siemens reyrolle protection relays

7SR105 Motor Protection Relay, Siemens reyrolle protection relays
  • 7SR105 Motor Protection Relay, Siemens reyrolle protection relays
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Product Details:

Voltage Typeon

The 7SR105 Rho motor protection relay is developed byusing the latest generation of hardware technology.7SR105 is a member of Siemens Reyrolle® protection devices Rho product family.
The 7SR105 Rho motor protection relay is housed in a 4Uhigh, size 4 non draw-out case and these relays provideprotection, monitoring, instrumentation, and metering withintegrated input and output logic, data logging and faultreports. Communication access to the relay functionality isvia a front USB port for local PC connection or rear electricalRS485 port for remote connection.

Protection Function

14 Stall Protection
46 Phase Unbalance Protection49 Thermal Overload48/66 Start Protection37 Undercurrent50 Instantaneous Overcurrent Protection
50N/G Instantaneous Earth Fault
51 Time Delayed Overcurrent Protection
51N/G Time Delayed Derived/Measured Earth Fault Protection
Supervision
74 T/CCS Trip and Close Circuit Supervision81B Anti Backspin46PhRev Phase Reversal
50BCL Breaking Capacity Limit
50BF Circuit Breaker Fail
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7SR10 Overcurrent Relay,siemens Numerical Relay,Siemens Protection Relays

7SR10 Overcurrent Relay,siemens Numerical Relay,Siemens Protection Relays
  • 7SR10 Overcurrent Relay,siemens Numerical Relay,Siemens Protection Relays
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Product Details:

Voltage Typeon

We are the foremost firm of Overcurrent Relay. Our products are developed under the supervision of industry certified experts. In addition, we present this product at nominal costs.

 

Features:

 

  • Affordable rates

  • Durability

  • Low maintenance

  • Easy installation

  • Top performance

  • Longer working life


The 7SR10 overcurrent and earth fault relay is developed by using the latest generation of hardware technology and is available in two variants depending on Binary IO configuration and data communication facility. 7SR10 is a member of Siemens Reyrolle® protection devices Argus product family. The 7SR10 overcurrent and earth fault relay is housed in a 4U high, size E4 non draw-out case and these relays provide protection, monitoring, instrumentation, and metering with integrated input and output logic, data logging and fault reports. Communication access to the relay functionality is via a front USB port for local PC connection or rear electrical RS 485 (optional) port for remote connection.
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  • Item Code: 7SR10
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7SR11 Overcurrent Relay,siemens motor protection relay,Siemens Overcurrent Protection Relays

7SR11 Overcurrent Relay,siemens motor protection relay,Siemens Overcurrent Protection Relays
  • 7SR11 Overcurrent Relay,siemens motor protection relay,Siemens Overcurrent Protection Relays
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Product Details:

Voltage Typeon

We are occupied in providing Reyrolle 7SR11 The offered product is extremely admired by our patrons for its top performance and longer working life.

 

Features:


  • High performance

  • Long functional life

  • Easy to use

  • Longer life service

  • Compact structure

  • Low maintenance

 

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 back-up protection on items of plant such as transformers. On distribution system circuits overcurrent and earth fault protection is often the only protection installed.

 

The 7SR12 includes for directional control of the overcurrent and earth fault functionality and is typically installed where fault current can flow in either direction i.e. on interconnected systems.

 

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

 

The relays are available in single and four pole variants housed in E4 cases with the IEC61850 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 RS 485 port for remote connection are provided.

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  • Item Code: 7SR110
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7SR242 Transformer Protection Relay, Siemens Reyrolle Numerical Relays

7SR242 Transformer Protection Relay, Siemens Reyrolle Numerical Relays
  • 7SR242 Transformer Protection Relay, Siemens Reyrolle Numerical Relays
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Product Details:

Voltage Typeon

The 7SR242 is used as a protection, control and monitoring relay for two winding transformers of all vector groups, primary configurations/connections and earthing connections. The relay functionality also allows its application in auto-transformer and reactor protection schemes. Relays are housed in size E8 or E10 cases. Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits. Protection, control, instrumentation and metering functionality is accessible via data comm channel(s). A front USB port for local PC connection or rear electrical RS 485 port for remote connection are provided. Additional rear port options are available.

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  • Item Code: 7SR242
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7SG17 Motor Protection Relay

7SG17 Motor Protection Relay
  • 7SG17 Motor Protection Relay
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Product Details:

Relay TypeVoltage Relay

7SG17 relays provide thermal overload protection of motors or static plant for all in service conditions.

 

Features such as overcurrent and earth fault provide back-up protection for the motor and connections.

 

Relays have four current inputs and are housed in E6 or E8 cases. Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analogue/RTD inputs and binary input/output circuits.

 

Protection and instrumentation functionality is accessible via the data comms channel - a fibre optic or RS485 port is provided on the rear of the relay.

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  • Item Code: 7SG17-Rho
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7SR157 Synchronising Protective Relay,overcurrent protection relay,siemens numerical relay

7SR157 Synchronising Protective Relay,overcurrent protection relay,siemens numerical relay
  • 7SR157 Synchronising Protective Relay,overcurrent protection relay,siemens numerical relay
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Voltage Typeon

The Reyrolle 7SR157 Argus is a combined check and system synchronising relay designed to carry out controlled closing of a circuit breaker using measurements of the line and bus voltages. The relay will prevent closure of the circuit breaker if the differences in phase angle, slip frequency or magnitude of the voltages fall outside prescribed Limits.

 

If the parameters are within limits, the relay will issue an output which can be used to close the circuit breaker directly or in conjunction with an auto-reclose scheme.

 

Housed in a 4U high, size E4 case, the relay provides instrumentation and fault data with integrated input and output logic, data logging and fault reports. Communication access to the relay functionality is via a front USB port for local PC connection or rear electrical RS 485 port for remote Connection.

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7SR210 Overcurrent Relay,Siemens Reyrolle Relays,Siemens Overcurrent and Earthfault Relays

7SR210 Overcurrent Relay,Siemens Reyrolle Relays,Siemens Overcurrent and Earthfault Relays
  • 7SR210 Overcurrent Relay,Siemens Reyrolle Relays,Siemens Overcurrent and Earthfault Relays
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Product Details:

Voltage Typeon

The 7SR210 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 back-up protection on items of plant such as transformers, Relays have four current inputs and are housed in E6 or E8 cases.

 

7SR220 series relays include for directional control of the overcurrent and earth fault functionality and are typically installed where fault current can flow in either direction i.e. on interconnected systems. Relays have five current and four voltage inputs they are housed in E6 or E8 cases.

 

Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits. The optional auto-reclose feature offers an integrated solution for use on OHL feeders.

 

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

 

Protection, instrumentation and metering functionality is accessible via data comms channel(s). A front USB port for local PC connection and rear electrical RS 485 port for remote connection are provided as standard, additional ports are available as options.

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  • Item Code: 7SR210-7SR220
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7SR224 Overcurrent Protection Relay, Siemens Numerical Overcurrent Relays

7SR224 Overcurrent Protection Relay, Siemens Numerical Overcurrent Relays
  • 7SR224 Overcurrent Protection Relay, Siemens Numerical Overcurrent Relays
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Product Details:

Relay TypeVoltage Relay

7SR224 series relays include for directional control of three phase overcurrent and earth fault functionality and typically installed as an integral controller for a pole mounted recloser. The controller offers an integrated auto-reclose solution for use on OHL feeders.

 

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

 

Relays have four current and four voltage inputs and are housed in E10 cases.

 

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 and rear electrical RS 485 port for remote connection are provided as standard, additional ports are available as options.

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  • Item Code: 7SR224
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7SR23 High Impedance Bus Bar Protection Relay

7SR23 High Impedance Bus Bar Protection Relay
  • 7SR23 High Impedance Bus Bar Protection Relay
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Product Details:

Relay TypeVoltage Relay

The 7SR23 DAD is a numeric high impedance circulating current relay has four current inputs, it is used as a unit protection to detect phase and earth faults.

 

The relay can be applied to bus bars, connections, transformers, reactors and motors.

 

The relay is used in ‘high impedance’ applications in conjunction with external stabilising resistors and non-linear resistors (Metrosils). Standardised external components can be provided in an Epsilon case to facilitate design and installation.

 

The integral CT supervision feature detects open circuits in the CT secondary wiring circuits, a consideration where CT circuits are switched.

 

Relays are housed in E6 or E8 cases. Integrated logic is provided to allow the optimal configuration of relay input and output functionality. Protection, instrumentation and metering functionality is accessible via data comms channels. A front fascia USB port for local connection and RS 485 rear port for remote connection are provided as standard, additional rear ports are available as options..

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  • Item Code: 7SR23
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SIEMENS Test Block 7XG22

SIEMENS Test Block 7XG22
  • SIEMENS Test Block 7XG22
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Product Details:

  • A range of 14 way test blocks, all housed in an Epsilon size E2 case
  • A range of 14 way test blocks, all housed in an Epsilon size E2 case.
  • CT shorting is available, using a dedicated test plug for each model of test block.
  • Test plugs are fitted with 4mm shrouded test points.

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  • Item Code: 7XG22
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7XG31 Arc Protection Relay

7XG31 Arc Protection Relay
  • 7XG31 Arc Protection Relay
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Product Details:

Relay TypeVoltage Relay

Arc fault protection is a relatively new technique employed for the fast clearance of arcing faults on Busbars & within metal clad switchgear & associated cable boxes. The arc is detected using an optical sensor & the signal input to a protection device which also monitors the load current on the system. Conventional current based protection techniques are at times challenged by the nature of arcing faults, and can result in slow protection clearance times. Slow protection clearance times increase the risk to nearby personnel and increase the degree of damage to plant and equipment. By employing an optical detection technique, Arc Fault Protection results in fast clearance of arcing faults.

 

When an arc fault start current is coincident with a signal from the optical sensor a trip command is output. An Arc trip only signal can be achieved within 10ms which can be considerably faster than that provided by a traditional IDMT overcurrent relay. This is because the onset of an arcing fault can occur at relatively low fault currents. Arguably the greatest risk of arc fault damage exists at the CB cable termination & in the CB chamber itself due to the slow clearance times of the IDMT feeder protection.

 

The ReyArc range of protection devices provide multiple arc fault protection schemes depending on your protection system requirements:

 

ReyArc Arc Protection range:


  • 7XG3120 Arc Fault Monitor Detects Arc faults independently & in parallel with an overcurrent check relay.

  • 7XG3123 ARC Fault Module - Designed to connect one or two optical arc fault sensors to a protection relay status input.

  • 7XG3124 IEC61850 Arc Fault Monitor – Arc Fault detection using IEC-61850

  • 7XG3126 Arc Fault Monitor with Integrated Three Phase Current Check

  • 7XG3130 Optical ARC Fault Sensor

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  • Item Code: 7xg31
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7SR17 Motor Protection Relay,siemens motor protection relays

7SR17 Motor Protection Relay,siemens motor protection relays
  • 7SR17 Motor Protection Relay,siemens motor protection relays
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Product Details:

Voltage Typeon

Protection Functions
  • Stall Protection (14)

  • Under/Over Voltage (27/59)

  • Power/Power Factor (32/55)

  • Undercurrent (37)

  • Current Unbalance Protection (46)

  • Phase Reversal (46Ph Rev)

  • Voltage Unbalance (47)

  • Start Protection (48/66)

  • Motor Thermal Overload (49R)

  • Directional Overcurrent (67)

  • Directional Earth Fault (67G/67N)

  • Backspin Protection (81B)

  • Under/Over Frequency (81)

  • High Impedance REF (87REF)

  • Temperature Inputs (via Comms Port) (RTD)

Supervision Functions
  • Circuit Breaker Fail (50BF)

  • CT Supervision (60CTS)

  • VT Supervision (60VTS)

  • Trip Circuit Supervision (74T/CCS)

Monitoring Functions
  • Instrumentation

Main Features
  • Optional RTD inputs

  • Cold Load Settings

  • Eight Settings Groups

  • Password Protection

  • Self Monitoring

  • Circuit Breaker Trip Counter

  • Fault, event and waveform records

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7SR45 Self Powered Overcurrent Protection Relay

7SR45 Self Powered Overcurrent Protection Relay
  • 7SR45 Self Powered Overcurrent Protection Relay
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Product Details:

Relay TypeVoltage Relay

FunctionsProtection Functions
  • Instantaneous Overcurrent Protection (50)

  • Instantaneous Derived Earth Fault (50N)

  • Instantaneous Measured Earth Fault (50G)

  • Time Delayed Overcurrent (51)

  • Time Delayed Derived Earth Fault (51N)

  • Time Delayed Measured Earth Fault (51G)

  • Line Check / Switch On To Fault (SOTF)

  • Inrush Restraint

Features
  • Self Powered

  • 10 Fault Records

  • 100 Event Records

  • Password Protection

  • Self Monitoring

  • Overcurrent Protection Functions (Instantaneous and Delayed)

  • Relay Integration via Reydisp Evolution PC Software

  • Sensitivity of 20% Nominal Current

Hardware
  • 4 Current Transformer with 1A or 5A Inputs

  • 2 Binary Inputs

  • 2 Latched Binary Outputs, 1 changeover and 1 normally open

  • 1 Pulsed Output

User Interface
  • 16 Character x 2 Line Backlit LCD

  • Menu Navigation Keys

  • 9 Predetermined LED’s for Easy Use

  • Front USB Interface

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7SR191 Capa Protection Relays,7SR191 Capa Protection Relays, siemens protection relays

7SR191 Capa Protection Relays,7SR191 Capa Protection Relays, siemens protection relays
  • 7SR191 Capa Protection Relays,7SR191 Capa Protection Relays, siemens protection relays
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The 7SR191 Capa is a numerical protection device with a highly comprehensive functional software package.

The market for power capacitors is continually growing due to the expanding power network driven by increased customer demand. Power capacitors improve the performance, quality and efficiency of the system and minimize power loss. The 7SR191 Capa protection relay is designed with all of the necessary functionality for use on shunt connected distribution capacitor banks arranged in all of the common connection configurations:

1. Single Star

2. Double Star

3. Delta

4. H Configuration

The 7SR191 Capa is a numerical protection device with a highly comprehensive functional software package which includes a range of integral application functions aimed at reducing installation, commissioning, wiring and engineering time.

Features

1. User selectable hardware configuration to suit different bank arrangements

2. *3 pole overcurrent + 1 pole unbalance

3. 1 pole overcurrent + 3 pole unbalance

4. Optional voltage inputs

5. Re-energisation blocking to prevent CB closing until bank has self discharged

6. Overvoltage protection by integration analysis of current

7. Suitable for use with both internally/externally fused and fuseless capacitors

8. User programmable characteristics for all inverse voltage, current and thermal curves

9. Unbalance protection with natural spill compensation

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7PG2111 Solkor Relay,siemens solkor protection relay, siemens protection relay

7PG2111 Solkor Relay,siemens solkor protection relay, siemens protection relay
  • 7PG2111 Solkor Relay,siemens solkor protection relay, siemens protection relay
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The 7PG21 is a three phase unit differential protection used to detect in zone phase and earth faults. The relay is applied to overhead line and underground cable circuits as well as shorter circuits such as interconnectors.

Relays (and associated CTs) are installed at each end of the protected circuit and connected together with dedicated metallic pilot wires.

This established protection system provides a simple, robust protection of proven performance facilitating straightforward installation, commissioning and maintenance.

Relays have 3 current inputs and are housed in E6 cases.

Additional relays and components can be added to the basic protection to provide:

1. Increased insulation level

2. Pilot Wire Supervision to monitor the integrity of the pilot circuit.

Protection Functions

1. Current differential protection over a single pair of pilot wires

Supervision Functions

1. Optional pilot wire supervision

2. Optional overcurrent guard (check)

Control Functions

1. Optional unstabilising / intertripping

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7PG23 5B3 Relay, Siemens Reyrolle Protection Relay

7PG23 5B3 Relay, Siemens Reyrolle Protection Relay
  • 7PG23 5B3 Relay, Siemens Reyrolle Protection Relay
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The 7PG23 electro-mechanical single phase circulating current protection is used to detect earth faults in ‘high impedance’ protection schemes. The relay is typically applied used in transformer protection schemes.

One relay per phase can be applied to detect both phase and earth faults e.g. on reactors and stator windings of large machines.

The relay is a voltage operating device and has a user selectable operate voltage setting. The relay can be used in conjunction with an external shunt setting resistor where a higher operate current is required. An integral non-linear resistor limits over-voltages occurring during system faults. Operation flag indicator. Relays are housed in size E3 cases.

Protection Functions

High impedance restricted earth fault

Features

User selectable voltage setting

Integral voltage limiting device

Operation flag indicator

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7SR18 Solkor Protection Relay,solkor protection relay,Siemens Reyrolle Protection Relays

7SR18 Solkor Protection Relay,solkor protection relay,Siemens Reyrolle Protection Relays
  • 7SR18 Solkor Protection Relay,solkor protection relay,Siemens Reyrolle Protection Relays
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Our differential protection relay, Reyrolle7SR18, is a numeric three phase differential protection relay used to detect in zone phase and earth faults. This differential protection relay is applied to overhead line and underground cable circuits as well as shorter circuits such as interconnectors.

Reyrolle 7SR18 differential protection relays have integral back-up overcurrent/earth fault protection and intertripping channels.

Protection Relays (and associated CTs) are installed at each end of the protected circuit. The relays are connected together with a fully supervised fibre optic protection communications link.

Relays have four current inputs and are housed in E6 cases. Integrated logic is provided to allow the optimal configuration of relay protection functionality with the relay's analogue inputs and binary input/output circuits.

Protection and instrumentation functionality is accessible via the data comms channel - a front USB, RS485 and IEC 61850 (optional) rear ports.

Protection Functions

  • 3-phase, phase segregated current differential protection
  • Overcurrent
  • Earth Fault

Supervision Functions

  • Protection comms link supervision
  • Circuit Breaker Fail
  • CT Supervision
  • Trip Circuit Supervision

Control Functions

  • Intertripping

Monitoring functions

  • Primary/Secondary Current Phases and Earth
  • Historical Demand Record

Features

  • CT ratio correction
  • Four Setting Groups
  • Password Protection
  • Self Monitoring
  • Circuit Breaker Trip Counter
  • Fault, event and waveform records
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7SR110 Argus Relay,Siemens Numerical Relay,siemens Overcurrent Earthfault Relays

7SR110 Argus Relay,Siemens Numerical Relay,siemens Overcurrent Earthfault Relays
  • 7SR110 Argus Relay,Siemens Numerical Relay,siemens Overcurrent Earthfault Relays
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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 back-up protection on items of plant such as transformers. On distribution system circuits overcurrent and earth fault protection is often the only protection installed.

 

The 7SR12 includes for directional control of the overcurrent and earth fault functionality and is typically installed where fault current can flow in either direction i.e. on interconnected systems.

 

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

 

The relays are available in single and four pole variants housed in E4 cases with the IEC61850 protocol option housed in an E6 case. Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analog 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 are provided.

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)
  • Directional Control of Overcurrent & Earth Fault (67)
  • High Impedance REF (64H)
  • Under/Over Voltage (27/59)
  • Negative Phase Sequence Voltage (47)
  • Voltage Controlled Overcurrent (51V)
  • Neutral Voltage Displacement (59N)

Supervision Functions

  • CT Supervision (60CTS)
  • Trip & Close Circuit Supervision (74T/CCS)
  • VT Supervision (60VTS)
  • Inrush Detector (81HBL2)
  • Circuit Breaker Fail (50BF)

Control Functions

  • Auto Reclose (79)

Monitoring Functions

  • Primary/Secondary Current Phases and Earth Direction
  • Primary/Secondary Line and Phase Voltages
  • Apparent Power and Power Factor
  • Real and Reactive Power
  • W Hr & VAr Hr Forward and Reverse
  • Historical Demand Record
  • Positive Phase Sequence (PPS) Voltage & Current
  • Negative Phase Sequence (NPS) Voltage & Current
  • Zero Phase Sequence (ZPS) Voltage
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7SR158 Argus Relay,Reyrolle 7SR158 Argus,Siemens Earthfault Overcurrent Protection Relays

7SR158 Argus Relay,Reyrolle 7SR158 Argus,Siemens Earthfault Overcurrent Protection Relays
  • 7SR158 Argus Relay,Reyrolle 7SR158 Argus,Siemens Earthfault Overcurrent Protection Relays
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The Reyrolle 7SR158 Argus voltage and frequency relays are numerical, multifunctional devices, with functionality designed for connection to voltage transformers. The voltage and frequency functionality is supplemented by data storage, instrumentation, user configurable logic and data communication features. A menu based user friendly interface provides local access to relay settings, instruments and operational data. The fascia also benefits from 9 user configurable, tri-coloured LEDs and a USB port for PC access.

The key functions provided include 27/59 -Under and Over voltage, 81 -Under and Over frequency, 78 -Voltage vector shift and 81R -Rate of change of frequency.

Relays have three voltage inputs, six binary inputs and eight binary outputs and are housed in a size E4 case. Programmable logic is provided to allow the optimal configuration of relay functionality. A rear electrical RS485 port is provided for SCADA connection using either IEC60870-5-103, DNP3.0 or MODBUS RTU protocol.

Protection Functions

1. Under/Over Voltage

2. Under/Over Frequency

3. Rate of change of Frequency

4. Negative Phase Sequence Voltage

5. Neutral Voltage Displacement

6. Voltage vector shift

Supervision Functions

1. Trip and Close circuit supervision

2. CT Supervision (60CTS)

3. Lockout

4. Monitoring Functions

5. Primary/Secondary Line and Phase Voltages

6. Historical Demand Record

7. Positive Phase Sequence (PPS) Voltage

8. Negative Phase Sequence (NPS) Voltage

9. Zero Phase Sequence (ZPS) Voltage

Further Functions

1. Four Settings Groups

2. 2 Levels Password Protection

3. Self Monitoring

4. Circuit Breaker Trip and Maintenance Counters

5. Fault, event and waveform records

6. Programmable user logic

7. User Alarms

8. Virtual Inputs/Outputs

9. Front USB Communication Port

10. Rear RS485 Communication Port

11. IEC60870-5-103, DNP 3.0 and MODBUS RTU

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7SR120 Argus Relay,Siemens Numerical Overcurrent Earthfault Relays,Siemens protective relay

7SR120 Argus Relay,Siemens Numerical Overcurrent Earthfault Relays,Siemens protective relay
  • 7SR120 Argus Relay,Siemens Numerical Overcurrent Earthfault Relays,Siemens protective relay
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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 back-up protection on items of plant such as transformers. On distribution system circuits overcurrent and earth fault protection is often the only protection installed.

The 7SR12 includes for directional control of the overcurrent and earth fault functionality and is typically installed where fault current can flow in either direction i.e. on interconnected systems.

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

The relays are available in single and four pole variants housed in E4 cases with the IEC61850 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 are provided.

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7SR220 Overcurrent Relay, Siemens Reyrolle Numerical Relays Supplier

7SR220 Overcurrent Relay, Siemens Reyrolle Numerical Relays Supplier
  • 7SR220 Overcurrent Relay, Siemens Reyrolle Numerical Relays Supplier
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7SR220 series relays include for directional control of the overcurrent and earth fault functionality and are typically installed where fault current can flow in either direction i.e. on interconnected systems. Relays have five current and four voltage inputs they are housed in E6 or E8 cases.

Integrated logic is provided to allow the optimal configuration of relay functionality with the relays analogue inputs and binary input/output circuits. The optional auto-reclose feature offers an integrated solution for use on OHL feeders.

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

Protection, instrumentation and metering functionality is accessible via data comms channel(s). A front USB port for local PC connection and rear electrical RS485 port for remote connection are provided as standard, additional ports are available as options.


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