FLAME-PROOF SUPPLY SWITCHGEAR CROK-6z

Medium voltage flame-proof supply switchgear type CROK-6z is intended for distribution of electric energy in three phase network with isolated star point with working voltage up to 7.2 kV. Supply switchgear is especially designed for supplying another flame-proof switchgears e.g. type ROK, CROK and can be used to direct control of the receivers.

The supply switchgear CROK-6z type as well as intended to work in underground of mining plants, in room classified as “a”, “b” category of methane explosion hazards and class “A” and “B” of dust explosion hazard as well as in non hazardous areas.

STRUCTURE:

Whole electrical equipment is installed in flame-proof enclosure type OB/C-* adapted for quick and easy transportation and installation in position of operation. In devices is used microprocessor controller type multiMUZ-3 or alternativelly mulitiMUZ-2, which has the following functions: measurements, protections, events register and control according to programmed operating logic. As switching equipment alternatively is used: ROLLARC R400 contractor, circuit breakerVC-1,circuit breaker VD4, circuit breaker SION or circuit breaker VCB/TEL.

Rated voltage: 3 or 3,3 or 6 kV

Rated current: up to 400A

Marking of explosion proofness: I M2 Ex d [ia Ma] I Mb

ATEX certificate