Connecting Communication; Energizing Protection Relay - ABB Relion 620 Series Installation Manuals

1MRS757641 E
5.7
5.8
620 series
Installation Manual
GUID-FF5CD464-2C31-4F6A-B081-EA80ECF8D942 V2 EN
Figure 43: Connecting auxiliary voltage

Connecting communication

• Before connecting communication, check that the HW module has the correct
communication interfaces.
The communication module is located on the left side of the protection relay
when viewing the case from the rear.
See the technical manual for product-specific communication
interfaces.

Energizing protection relay

Before connecting the auxiliary power, check that the protective film
is removed from top of the protection relay.
• Before connecting the auxiliary power, check that all the wiring is done correctly.
• Remove the protective film from the top side of the unit. Check that there is no
debris visible in the ventilation holes.
Section 5
Connecting
49