Features - Siemens SIPROTEC 7SS60 Manual

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