ABB GATS111100R0001 MT30 Text Display

MT30 Text Display

Manufacturers

ABB

Model(s)

ABB Advant Controller 31. ABB Advant OCS

Estimated Shipping Size

Dimensions: 0.0" x 0.0" x 0.0"

(0.0 cm x 0.0 cm x 0.0 cm)

Weight: 0 lbs 0.0 oz (0.0kg )

Features

High degree of reliability, even when it has been idle for a long time

PSU14n.. with mechanical flag type indicator

6 / 14 contacts with double interruption

Contact configuration can be changed with ease

Different mounting variants

Wide range of voltage and contact configuration

Application

For remote and automatic control there is often a need for contactors which have two stable contact positions, even in the dead state. This requirement is fulfilled by changeover contactors type PSU..n.. The application of alternate control pulses to the coils cause the contacts to change from the one state to the other. If the supply is interrupted, the contacts remain in their previous position, even when the voltage is restored.

Design and principle

Basically, the PSU changeover contactors are composed of the same constructional elements as the established contactors type P8n. Two magnet systems are inter- connected by a pivoted element. In the type PSU6n… with 6 free contacts, only one system has contacts; in type PSU14n… with 14 free contacts, both systems have contacts. In each case two contacts are required for changing over the connection of the coils.

The contacts are arranged symmetrically on both sides of the relay coil and armature assembly in two stacks. They are easily accessible and the conversion from N/C to N/O contacts and vice versa is simple. The maximum rated voltage is 250V d.c. or a.c. and the material used is hard silver. The following definitions apply for reset and operate

condition; reset condition – Armature assembly position is away from the base i.e. the upper system has been pulsed and lower system is ready to be pulsed. The flag strips are invisible i.e. white during this condition. Operate condition – Armature assembly position is closer to the base i.e. the lower system has been pulsed and upper system is ready

to be pulsed. The flag strips are visible i.e. red during this condition.

A transparent, incombustible cover with a gasket protects the contacts against dirt. The terminals of the contact stacks themselves permit two wires of 1.5mm diameter maximum to be secured. The terminals on the base for the external wiring have holes with a diameter of 3.8mm. The terminals on the plug-in base can accommodate two wires, each 2 with a cross-section of 2.5mm . Changeover relays must always be mounted with the contact post horizontal, that is with the base on a vertical surface. The plug-in version offers many advantages, both from the point of view of

installation and afterwards for maintenance. It is fitted with locating pegs which prevent it from being inserted the wrong way round. The labelling of the terminals on the base is identical to that on the contact stacks.