General; Safety Instructions - NR Electric PCS-9611 Instruction Manual

12.1 General

This relay is fully numerical in their design, implementing all protection and non-protection
functions in software. The relay employs a high degree of self-checking and in the unlikely event of
a failure, will give an alarm. As a result of this, the commissioning test does not need to be as
extensive as with non-numeric electronic or electro-mechanical relays.
To commission numerical relays, it is only necessary to verify that the hardware is functioning
correctly and the application-specific software settings have been applied to the relay.
Blank commissioning test and setting records are provided at the end of this manual for
completion as required.
Before carrying out any work on the equipment, the user should be familiar with the contents of the
safety and technical data sections and the ratings on the equipment's rating label.

12.2 Safety Instructions

WARNING! Hazardous voltages are present in this electrical equipment during operation.
Non-observance of the safety rules can result in severe personal injury or property
damage.
WARNING! Only the qualified personnel shall work on and around this equipment after
becoming thoroughly familiar with all warnings and safety notices of this manual as well
as with the applicable safety regulations.
Particular attention must be drawn to the following:

The earthing screw of the device must be connected solidly to the protective earth conductor
before any other electrical connection is made.

Hazardous voltages can be present on all circuits and components connected to the supply
voltage or to the measuring and test quantities.

Hazardous voltages can be present in the device even after disconnection of the supply
voltage (storage capacitors!)

The limit values stated in the technical data (Chapter 2) must not be exceeded at all, not even
during testing and commissioning.

When testing the device with secondary test equipment, make sure that no other
measurement quantities are connected. Take also into consideration that the trip circuits and
maybe also close commands to the circuit breakers and other primary switches are
disconnected from the device unless expressly stated.
PCS-9611 Feeder Relay
Date: 2014-04-08
12 Commissioning
12-1