L3016
1SDH000559R0002
12/52
ABB SACE
SACE PR021/K
5.
Installation and setup
5.1.
Installation instructions
Mount on standard 35mm guide (DIN EN50022 type TS 35 x 15mm).
For the removable front connectors use cables with conductors having a cross-section from:
- 0.5 to 1.5mm
2
(AWG 22...14) for connections to terminals 1...10;
- 0.5 to 2.5mm
2
(AWG 22...12) for connections to terminals 11...26 (maximum current for each terminal is 5A continuous
rating, and 10A for a maximum of 2 seconds).
An earth terminal is provided on a front connector, to connect the electronic circuit to the installation earth.
Dielectric strength tests must not be carried out on the inputs and outputs of the PR021/K unit.
Although the PR021/K unit can be installed in the circuit-breaker compartment, it is good practice to install the unit in the
instrument compartment on the switchboard.
5.2.
Connections
Carefully study the relevant wiring diagrams for wiring the terminals.
For the dedicated inputs and outputs, wiring other than that described in the official ABB SACE wiring diagrams, is not
allowed.