7SR157 Argus Check and System Synchronising Relay
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Reyrolle Protection Devices 7SR157 Argus Check and System Synchronising Relay Energy Management.

Siemens Protection Devices Limited

Function Overview Check and System Synchronising Relays Check Sync Limits System Sync Limits Live Volts Dead Volts Description The 7SR157 Argus is a combined check and system synchronising relay which can 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...

User Interface 20 Character x 4 Line Backlit LCD Menu Navigation Keys 9 User Programmable Tri-colour LEDs User Language Configuration Hardware 2 VT, 3 Binary Inputs, 5 Binary Outputs 2 VT, 6 Binary Inputs, 8 Binary Outputs Data Storage and Communication Standard Communications Ports Communication access to relay functionality is via a front USB port for local PC connection or rear electrical RS485 port for remote connection Additional Optional Communication Ports 2x Electrical RJ45 Ethernet ports 2x LC Fibre Optic Ethernet ports Application Check or system synchronising is required whenever...

25 Line/Bus Undervolts The undervoltage detector element can block a close output command if either the line or bus voltages are below the 25 Line U/V / 25 Bus U/V setting value. 25 Voltage Diff The Differential Voltage Detector Element can block a close output command if the scalar difference between the line and bus voltages is greater than the 25 Volt Differential setting value. VT Level Mode Option of 2 State or 3 State, to determine when a voltage is live or dead: 2 State - Line or Bus voltages are dead until they exceed the live threshold. The voltages are then live until they drop...

Programmable Logic The user can map binary inputs, protection elements, LEDs and binary outputs together in a logical scheme. Up to 4 logic equations can be defined using standard logic functions e.g. Timers, AND/OR gates, Inverters and Counters to provide the user required functionality. Each logic equation output can be used for alarm & indication and/or tripping. Virtual Inputs/Outputs There are 8 virtual inputs/outputs to provide internal logical states to assist in the application of the functions. Each virtual I/O can be assigned in the same way as a physical I/O. Data Acquisition Via...

Reydisp Evolution Reydisp Evolution is a Windows based software tool, providing the means for the user to apply settings, interrogate settings and retrieve events and disturbance waveforms from the device and is common to the entire range of Reyrolle protection relays.______ Typical Reydisp Evolution Screenshot Language Editor The Language editor software gives the user the ability to customize the text displayed in the relays, Menu structure and instrumentation views. The tool allows a language file to be created and transferred to the relay also containing Western European characters....

Construction The relay is housed in a 4U high size E4 case with a removable clear plastic fascia cover. The plastic fascia cover can be ordered with or without two push buttons to allow the user to view the settings and instruments without removing the cover. Two plastic handles are provided to allow the relay to be withdrawn from its case. The rear terminal blocks comprise M4 female terminals for ring crimp wire connections, to provide a secure and reliable termination. User Interface User Function Label Relay Specification Label Programmable from fascia Multicoloured LED’s Front USB Comms...

For full technical data refer to the Performance Specification Section of the Technical Manual. Voltage Inputs Fibre Optic Ethernet Data Communication Interface Siemens Protection Devices Limited 9

Seismic response EN100 Electrical Ethernet Data Communication Interface (IEC 61850 Option) Level X-plane -3.5mm displacement below crossover freq (8-9Hz) 1gn and above Y-plane -1.5mm displacement below crossover freq (8-9Hz) 0.5gn above Mechanical Classification Electrical Tests Insulation IEC 60255-5 >106 operations Fault Record High Frequency Disturbance IEC 60255-22-1 Class III Data StorageVibration (Sinusoidal) IEC 60255-21-1 Class I Type Siemens Protection Devices Lim-

Type Analog Inputs: Line to Earth Case, Aux Power & I/O: Line to Earth RS485 Comms port: Line to Earth Analog Inputs: Line to Line Case, Aux Power & I/O: Line to Line Variation < 10% < 10% No Data Loss < 10% < 10% 1.0 kV * * Note 50ms DTL pick-up delay applied to binary inputs Conducted Radio Frequency Interference IEC 60255-22-6 Humidity IEC 60068-2-78 Operational test 56 days at 40 °C and 93 % relative humidity Siemens Protection Devices Limited 11

Siemens Protection Devices Lim-

Case Dimensions Case Earth connection Typical when fitted SIDE VIEW FRONT VIEW 25mm MIN CLEARANCE FOR TERMINAL WIRING NOTE: THE 3.6 HOLES ARE FOR M4 THREAD FORMING (TRILOBULAR) SCREWS. THESE ARE SUPPLIED AS STANDARD AND ARE SUITABLE FOR USE IN FERROUS / ALUMINIUM PANELS 1.6mm THICK AND ABOVE. FOR OTHER PANELS, HOLES TO BE M4 CLEARANCE (TYPICALLY 4.5 DIAMETER) AND RELAYS MOUNTED USING M4 MACHINE SCREWS, NUTS AND LOCKWASHERS (SUPPLIED IN PANEL FIXING KIT). Diameter 3.6 - 4 holes (see note) E4 Case overall dimensions and panel drilling details (all dimensions are in mm) PANEL CUT-OUT Typical...

Connection Diagram Data Comms (optional) Rear View Arrangement of terminals and modules BI = Binary Input BO = Binary Output Items shown in BOLD are ordering options Shows contacts internal to relay case assembly. Contacts close when the relay chassis is withdrawn from case Siemens Protection Devices Lim-

Ordering Information Product description Voltage Relay (Argus) Protection Product Voltage Relay Type Check Synchronising Case, I/O and Fascia 2 VT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 2 VT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs Auxiliary voltage 80 to 250 VDC / 115 VAC, binary input threshold 19 V DC 80 to 250 V DC, binary input threshold 88 V DC 24 to 60 V DC, binary input threshold 19 V DC Spare A Communication Interface Standard version – included in all models, USB front port, RS485 rear port (E4 case) 1) Standard version - plus additional rear electrical Ethernet RJ45...