Contactor of KB1 160 - 250
Contactors of KV1-160-3V3, KV1-250-3V3, KV1-400-3V3, KV1-630 of production of CJSC ChEAZ are expected respectively currents 160, 250, 400, 630 A. Prednaznachena for use in actuators, stations of management, for switching of currents of inclusion and shutdown of asynchronous electric motors with a short-circuited rotor and other loads in remote control systems electric drives.
Vacuum contactors from the KB1 series are applied in the industries of metallurgical, oil and gas and ore mining industry, city and railway transports, and also in other industries where there is a heavy operating mode of electric drives.
Principle of work
Power supply of coils is carried out from a network of a constant or variable flow of current by means of electronic components of inclusion. Power supply of coils with contacts at electric locomotives at Uts.U station. - 50B it is directly carried out from a network during the last inclusion of ballast resistance, with a chain of the involving coils, using the disconnecting contact of own contact block. Power supply of coils with contacts of a special purpose is very often carried out from the alternating current main, at a voltage of 36B using the vypryamitelny block. After the contactor works, tension in coils sharply decreases to 12B that is promoted by the consumer's transformer.
The contactor has two blocks of auxiliary contacts: left and right with 1 "Z" and 1 "P" contacts. Contacts of an auxiliary chain in the mode of normal kommutation are expected tension from 24 to 220B constant and from 110 to 660B alternating currents with a frequency of 50 (60) Hz. Kontaktora have a possibility of installation of an electromagnetic latch which provides the closed condition of the main contacts at a temporary or long absence of tension in a power-supply circuit of the including coils.
Perhaps reverse execution of contactors of KB1 (many use the name "reverse"). All reversing contactors are built by mechanical blocking which excludes timely short circuit of both contacts in contactors.