7SR17 Rho Motor Protection Relay
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Catalog excerpts

7SR17 Rho Motor Protection Relay - 1

ENTER -to CONTROL PROT HEALTHY EARTH FAULT Reyrolle Protection Devices! 7SR17 Rho Motor Protection Relay Energy Management

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7SR17 Rho Motor Protection Relay - 2

Siemens Protection Devices Limited

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7SR17 Rho Motor Protection Relay Supervision (can include) Phase Reversal Breaking Capacity Limit Circuit Breaker Fail CT Supervision Enhanced CT Supervision VT Supervision Trip Circuit Supervision Anti Backspin Temperature Input Monitoring Control (can include) 86 Lockout Motor Start/Stop Control User Programmable Logic Features_ 4 Settings Groups Password Protection - 2 levels (protection and control) Self Monitoring User Interface Description The 7SR17 motor protection relay range utilises service and design experience accumulated with the previous generations of Rho family of products....

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7SR17 Rho Motor Protection Relay - 4

Data Communications Description of Functionality 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 Standard Protocols IEC60870-5-103, Modbus RTU, DNP3.0. User selectable with programmable data points. Optional Protocols IEC61850 (E6 Case) Ethernet Redundancy Protocols: Standard in all IEC61850 models: PRP (Parallel Redundancy Protocol) RSTP (Rapid Spanning Tree...

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7SR17 Rho Motor Protection Relay - 5

50/51 Overcurrent Definite time elements provide short circuit overcurrent protection with independent settings for pickup current and time-delays. IDMT curves can also be selected. 50BF Circuit Breaker Fail The circuit breaker fail function may be triggered from an internal trip signal or from a binary input. Where a CB closed is detected following a trip signal an output is issued after a specified time interval. This can be used to re-trip the CB or to back-trip an upstream CB. A second time delay is available to enable another stage to be utilized if required. 60CTS CT Supervision Two...

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Ethernet Communications Data Acquisition Via Communication Interface IEC 61850 Sequence of event records Up to 1000 events are stored and time tagged to 1ms resolution. Fault Records The last 10 fault records are displayed on the HMI, with time and date of trip, measured quantities and type of fault. Waveform recorder The waveform recorder stores analogue data for all phases, the states of protection functions, Binary Inputs, LEDs and Binary Outputs with pre & post trigger data. A record can be triggered from Protection function, Binary input or via data communications. 1 record of 10sec, 2...

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7SR17 Rho Motor Protection Relay - 7

Auxiliary supply Operating Voltage Voltage Free Operating Mode User selectable - Self or Hand Contact Operate / Release 7ms / 3ms Time. Making Capacity: Carry continuously 5A ac or dc Breaking Capacity ( < 5 A and < 300 V): AC Resistive AC Inductive DC Resistive DC Inductive Siemens Protection Devices Limited 7

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Siemens Protection Devices Limited 8

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7SR17 Rho Motor Protection Relay - 9

Siemens Protection Devices Limited 9

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7SR17 Rho Motor Protection Relay - 11

47 Negative Phase Sequence Voltage Siemens Protection Devices Limited 11

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50BF Circuit Breaker Fail Siemens Protection Devices Limited 12

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7SR17 Rho Motor Protection Relay - 13

Case Dimensions Case Earth connection Typical when fitted SIDE VIEW FRONT VIEW 25mm MIN CLEARANCE FOR TERMINAL WIRING Fig 4. E4 Case overall dimensions and panel drilling details (All dimensions are in mm) PANEL CUT-OUT Typical when fitted SIDE VIEW Case Earth connection MINIMUM CLEARANCES: 25mm FOR TERMINAL WIRING 75mm FOR ETHERNET COMMS MODULE Diameter 3.6 - 4 holes (see note) FRONT VIEW FRONT 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,...

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7SR17 Rho Motor Protection Relay - 14

RTD or Thermistor Connections (shown for Temperature Sensor Inputs (TSI) 1-4):-RTDs Thermistors Screened cable is recommended for use with the optional temperature inputs. Four earth screw terminals are provided on the rear of the relay for cable screens. Relay Earthing Terminal 28 of the Power Supply Unit should be earthed by a direct connection to the relay case earth stud. The relay case earth stud should be solidly earthed by a direct connection to the panel earth. BI = Binary Input, BO = Binary Output GND = Ground/earth TSI = Temperature Sensor Input Siemens Protection Devices Limited 14

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7SR17 Rho Motor Protection Relay - 15

Relay Voltage Configuration Setting Siemens Protection Devices Limited

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7SR17 Rho Motor Protection Relay - 16

NOTE: The use of functionality is dependent on external connections to the relay i.e. some functions are mutually exclusive NOTE: The use of functionality is dependent on external connections to the relay i.e. some functions are mutually exclusive NOTE: The use of functionality is dependent on external connections to the relay i.e. some functions are mutually exclusive NOTE: The use of functionality is dependent on external connections to the relay i.e. some functions are mutually exclusive Fig 8. Function Diagrams - 7SR17 Relays Siemens Protection Devices Limited

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Ordering Information – 7SR17 Rho Motor Protection Relay ORDER-No.: Protection Product Family Motor Protection Relay Type Basic Relay (See Note 1) Relay with 4 Temperature inputs (See Note 1) Relay with 8 Temperature inputs (See Note 1) Case, I/O and Fascia 4 CT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 4 CT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs 4 CT, 3 VT, 3 Binary Inputs / 5 Binary Outputs, 10 LEDs 4 CT, 3 VT, 6 Binary Inputs / 8 Binary Outputs, 10 LEDs Measuring input 1/5 A, 50/60Hz with SEF Input 1/5 A, 40-160V, 50/60Hz with SEF Input Auxiliary voltage 80-250V DC / 115V AC,...

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7SR17 Rho Motor Protection Relay - 18

Standard version - included in all models 14 Stall Protection 49 RTD I/F (See Note 2) RTD Monitoring via comms 50/51 Overcurrent 50BF Circuit breaker fail 50BCL Break Capacity Limit 74T/CCS Trip/Close Circuit Supervision 87REF High Impedance Restricted Earth Fault Programmable Logic For variants with Temperature inputs 49 Temp Temperature Input monitoring For variants with 3 x VT inputs as above - plus Under/Over Voltage Directional Power/Power Factor Negative Phase Sequence Overvoltage Enhanced CT Supervision VT Supervision Directional Overcurrent Directional Earth Fault Frequency HD Notes...

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