ABB REG316 4 Series Operating Instructions Manual page 600

ABB Switzerland Ltd
7. INSTALLATION AND MAINTENANCE
7.1. Summary
The place of installation and the ambient conditions must con-
form to the data given in the data sheet
room must be left in front and behind the equipment to allow ac-
cess for maintenance or adding to the system. Air must be al-
lowed to circulate freely around the unit.
During the course of commissioning, all the wiring to the unit
must be checked and the auxiliary supply voltage and the volt-
age for the opto-coupler inputs must be measured.
Functional testing can be carried out with the aid of the test set
Type XS92b.
All the essential functions of the protection are subject to con-
tinuous self-testing and monitoring and therefore periodic main-
tenance and testing are not normally necessary.
It is recommended, however, to check the values of the voltages
and currents of the external circuits from time to time using the
on the input channel display on the HMI. The tripping circuits
should be tested at the same time.
7-2
REG 316*4 1MRB520049-Uen / Rev. C
(see Index 8). Sufficient