ABB REX 521 Operating Manual - Page 11

Browse online or download pdf Operating Manual for Protection Device ABB REX 521. ABB REX 521 20 pages. Relay retrofit program, cutting tool

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6. Preparations

See the Safety Guide before using the cutting tool.

The cutting can be performed from the front or the back of the panel door. It is recommended to make the cut-out

from the front side of the door panel to avoid sharp edges and ensuring smooth installation of the new replacement

relay.

The instructions in this document are based on making the cut-out from the front. The low-voltage compartment

must be de-energized during the hole cutting procedure and installation of the new replacement relay.

Ensure that there is enough space to operate the cutting tool in all intended directions. Check the space required by

the new replacement relay. The cutting tool operation needs space around the cut-out.

1. Remove the existing device.

2. Release the signal connectors (not their wires).

3. Release the wires from current/voltage connector.

The used current/voltage connector wires are

reused (in specified connector poles) with the new

replacing device.

C u t t i n g To o l O p e r at i n g G u i d e

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