Central protection and residual current reclosing with WGC external transformer

Description

Unit equivalent to 4 residual current protection relays. 4 independent programmable relays available

4 inputs to connect the external toroidal transformers of the WG / WGS / WGC

Self-reclosing with programmable residual current trip in each channel

Superimmunized Type A relay with high frequency current filtering and high immunity. Monitoring in true root mean square (TRMS)

Reduced size: 3 modules

5 independent programmable outputs:

• 4 residual current trip outputs
• 1 end-of-reclosing-sequence interlocking output

Backlight display to show the information of the 4 channels:

• Adjustment values
• Instantaneous leakage current

Trip/external reset input

Automatic test of the connection and status of each external transformer

Optional RS-485 Communications: type CBS-4C RA and CBS-4C RAL

Assembly on DIN rail 46277 (EN-50022)

Optional assembly on 72 x 72 panel with accessory M5ZZF1.

Applications

CBS-4 RA or CBS-4 RAL allow an intelligent residual current protection, with greatly reduced dimensions. A contactor is available per channel, enabling the automatic reclosure after a trip, thus offering the most adequate solution for public lighting, cash machines, refrigeration chambers, traffic lights, etc. In addition, version CBS-4 C, with RS-485 communications, is used with the Power Studio software and it adds the centralised supervision in real-time, as well as a record log that can be analysed later on.

AC power supply

External reset input for tripping

Varistor characteristics

Digital relay outputs

User interface

Environmental characteristics

Mechanical characteristics

Protection

Differential protection

Standards