Features - Siemens SIPROTEC 7SS60 Manual

Centralized numerical busbar protection

Table of Contents

Introduction

1.3

Features

1-8

The 7SS60 busbar protection has the following features:

• Busbar protection operating on the differential current principle; one measuring sys-

tem per busbar section or, depending on the configuration, per phase and zone; op-

tionally one additional measuring system for the check zone (isolator-independent

measuring system)

• Full galvanic and interference-immune isolation between the internal processing

circuits and the measuring, control and supply circuits of the system by screened

measuring transducers, binary input and output modules and dc voltage converters

• Fully digital measured value processing and protection functions, from the sampling

and digitizing of the measured values to the TRIP decisions for the circuit breakers

• High degree of security against overfunction, and detection of external faults even

with unfavourable transformer configuration

• Differential current supervision of transformer circuits, with blocking option for TRIP

command

• Blocking of TRIP command possible by fast binary input

• Low demands on current transformers

• Numerical system with powerful 16-bit microprocessor system

• Easy menu-guided operation via integrated keypad and display panel or by con-

nected PC using DIGSI

• Storage of fault annunciations and of instantaneous values for fault recording

• Continuous monitoring of the hardware and software of the 7SS601 measuring sys-

tem, as well as of the primary current transformers and their supply conductors

• Integrated commissioning aids

7SS60 Manual

E50417-G1176-C132-A2

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