Smart earth leakage protection Multipoint earth leakage system for measurement and signalling with external transformer of the WGC / WGS series Description Unit equivalent to 4 earth leakage protection networks. Features 4 independent programmable relays. Four inputs for connecting the external toroidal transformers of the WGC / WGS series. Super-immunised type-A relay with high-frequency current filtering and high immunity. True root mean square (TRMS) measure —— Compact size: 3 modules —— Features 5 independent programmable outputs (4 earth leakage tripping relays and 1 prealarm relay). Compatible with WGC earth leakage transformers The CBS-4 multipoint earth leakage system associated with the WGC / WGS transformers offers smart earth leakage protection. Its design features guarantee maximum security and electrical service continuity, avoiding unwanted tripping. Viewing the instantaneous leakage value on the display, together with the prealarm indicators, makes it possible to obtain information on the status of lines to be protected, and to perform adequate preventive maintenance. In addition, version CBS-4 C features RS-485 communications and, with the PowerStudio software, offers centralised supervision in real time, as well as keeping a log of historical data for future analysis. Technical features Protection 4 independent lines A super-immunised True root mean square (TRMS) Time defined: 0.02...10 s Inverse curve: Instantaneous or selective Earth leakage transformer With built-in buttons, T & R Associated circuit breaker Contactor or circuit breaker + trigger coil Power supply voltage Leakage trip Prealarm Electrical features No. of protection elements Class Trip current (red display when tripped) Instantaneous level of leakage indicator in each channel Parameter programming External transf. disconnected indicator 230 V~ / 6 A -10 ... +50 ºC Polycarbonate selfextinguishing plastic V0 Protection degree Front: IP 41, IP 20 on back panel Installation category Insulation class Double insulation class II Maximum altitude Electrical safety Operating temperature Mechanical features Power supply Un Output contacts Un / In

Smart earth leakage protection Multipoint earth leakage system for measurement and signalling with external transformer of the WGS / WGS series References Type