Vacuum circuit breaker YZD-12

AC3-polehigh-voltage

To fulfill the necessary of power usage management, to use technique way to solve the difficulty on power cost recycling, especially hard to control the big power user, we researched this YZD-12 type outdoor H.V. pre-paid control device. It is used in electric system of AC 50 Hz, voltage 7 .2~12kV as the automatic recloser under pre-paid H.V. measurement or distribution network automation project. The host machine includes ZW8-12 vacuum circuit breaker, dry type voltage transformer and current transformer, integrated installation, the top of case is vacuum circuit breaker, the bottom is transformer apartment, matches with handle opening and closing spring mechanism outside, the control case is installed separately, it could extra install pre-paid ammeter as pre-paid measurement according to user' s requirement, or install it by user. H.V. vacuum circuit breaker is with spring mechanism, mechanical locking, inside case with switching apartment and transformer apartment. It is made of two sets dry type voltage transformers and two sets dry type current transformers of the transformer apartment, meanwhile, the voltage transformer sets dedicated core as the power of opening-closing mechanism, it is small outfit and easy installation. With V/V wire connecting for VT, the current transformer could be done with multi-ratio structure, to fulfill different load requirement. The control device is composed with pre-paid ammeter and control circuit, the connection between control device and vacuum switch is by metal-clad cable, achieves the function of using after purchasing, avoids the defaulting of electric cost in valid.