ACTAS Px60 · Quick start

Main Contact And Auxiliary Contact Connections

Connect the breaker’s main and auxiliary contacts to the correct ACTAS Px60 inputs.

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Procedure 01

Main Contacts & Pre-Insertion Resistors (PIR) Connections

Connect the main contact cables

Connect the cables labeled Main (blue, red, and yellow) to the A, B, and C Main 1+2 inputs on the ACTAS Px60.

ACTAS Px60 main contact cable connections
Main contact cable connections at the ACTAS Px60.
ACTAS Px60 Main 1+2 input connectors for phases A, B, and C
A, B, and C Main 1+2 inputs.
Input count: The P260+ has 3 Main Contact Inputs. The P360+ has 6 Main Contact Inputs.

Connect at each breaker pole

  • Connect a black and red clamp to the top of each pole’s bushings.
  • Plug the black cable into the black clamp.
  • Plug the red cable labeled 1 into the red clamp.
  • The red cable labeled 2 is only used if the pole has two interrupters.
Black and red main contact clamps connected at the top of a breaker pole bushing
Black and red clamp connections at a breaker pole.
During the test: Earthing must be removed on one side of the breaker pole.
Procedure 02

Auxiliary Contact Connections

Connect the auxiliary cables to ACTAS

Connect the cables labeled Aux to the A, B, and C Aux 1–4 inputs on the ACTAS P360.

Auxiliary contact cables connected to an ACTAS P360
Auxiliary contact cable connections at the ACTAS P360.
ACTAS P360 Aux 1–4 input connector
Aux 1–4 input connector.
Input count: The P260+ has 2 Auxiliary Contact Inputs. The P360+ has 3 Auxiliary Contact Inputs.

Connect at the breaker auxiliary points

Connect the Aux cables labeled 1–4 to the breaker auxiliary connection points. Cable 1 is normally used for 52a; cable 2 is used for 52b.

Aux cables labeled 1 through 4 connected to breaker auxiliary contact points
Auxiliary cable connections at the breaker.

Dry Auxiliary Contacts

In this breaker example, 1 and 2 are connected after the contact. The ACTAS Aux Common is connected before the contact.

Wiring diagram for a breaker with dry auxiliary contacts
Breaker with dry auxiliary contacts.

Wet Auxiliary Contacts

In this breaker example, 1 and 2 are connected after the contact. The ACTAS Aux Common is connected to the Station Battery Ground.

Wiring diagram for a breaker with wet auxiliary contacts and ACTAS Aux Common connected to station battery ground
Breaker with wet auxiliary contacts.
Auxiliary voltage: The auxiliary voltage supplied by ACTAS is 24 VDC. The input signal range is between 24 and 300 VDC.