Siemens 7SV512 User Manual

7SV512 V1.0
Instruction Manual
Numerical Circuit Breaker Failure Protection
Order No. C53000---G1176---C91---3
Figure 1 Illustration of the numerical circuit breaker failure protection relay 7SV512 (in flush mounting case)
E Siemens AG 1994
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Siemens 7SV512 Specifications

General

Rated Frequency	50/60 Hz
Display	LCD
Voltage Transformer Inputs	3
Current Rating	1 A / 5 A
Communication Protocols	IEC 61850, Modbus, DNP3
Binary Inputs	8
Binary Outputs	6
Current Transformer Inputs	3
Housing	Rack-mounted
Function	Overcurrent and Earth Fault Protection
Protection Functions	Overcurrent, Earth Fault, Thermal Overload

Summary

1 Introduction

1.1 Application

Describes the purpose and use cases of the 7SV512 relay in power systems.

1.2 Features

3 Technical Data

3.1 General data

3.2 Circuit breaker failure protection

Defines settings and parameters for breaker failure protection logic.

3.3 Circuit breaker pole discrepancy supervision

Specifies settings for monitoring pole positions and initiating trips.

4 Method of operation

4.1 Operation of complete unit

4.2 Circuit breaker failure protection

Details the core breaker failure protection mechanisms and logic.

4.4 Circuit breaker pole discrepancy supervision

Describes supervision of pole positions and detecting discrepancies.

4.5 Ancillary functions

5 Installation instructions

5.2 Preparations

5.3 Configuration of operational functions

Explains the process of setting operational functions and parameters.

5.5 Marshalling of binary inputs, binary outputs and LED indicators

6 Operating instructions

6.1 Safety precautions

Reiterates safety warnings for operation and testing.

6.2 Dialog with the relay

Explains how to interact with the relay via the front panel or PC.

6.5 Operational control facilities

6.6 Testing and commissioning

Provides general prerequisites and safety guidelines for testing.

6.7 Commissioning using primary tests

6.8 Putting the relay into operation

7 Maintenance and fault tracing

7.3 Fault tracing

Offers a systematic approach to diagnose and troubleshoot device faults.