Now every major type vacuum circuit breaker manufacturers have their own models, and giving it the same name as just a code to take it. ZN beginning of the model is the naming rule breaker national standard, and now no one uses generally are made in accordance with their own product-specific. Z represents a vacuum, N denotes indoors, the other numbers and characters no specific meaning. ZN is the beginning of a vacuum households ... beginning ZW is vacuum outdoors ..... V is generally English Vacuum acronym other characters generally have no special significance. -12 Shows such models rated at 12kV. Little relationship between product performance and product models, mainly to see the manufacturer's technical water products. Common aspects of electrical fault breaker before closing operation if the red and green lights are not within Xi'an indoor vacuum circuit breakers, indicating no control power or control loop has broken phenomenon. You can check whether the power and control of the entire control loop components normal operation when the green light flashes breaker closing, while the red light does not shine, instrument no indication horn rang Xi'an outdoor high voltage vacuum circuit breaker, breaker mechanical points, closing The position indicator is still OFF position, then the operating handle position and the position of the circuit breaker does not correspond to Xi'an outdoor high voltage circuit breakers, circuit breaker is not closed. The common causes are: closing the loop blown fuse or bad; closing the contactor is not activated; closing coil failure. When the operation after closing the circuit breaker, the green light is off, the red light goes off after momentary bright, green light flashes and there is also the horn sound, indicating that the circuit breaker is closed and then automatically tripped. The reason may be caused by a circuit breaker protection combined mechanical failure or circuit breaker tripping the circuit breaker can not be maintained in the closing state on the fault line. If the green light flashes when the operation switch on or off, the red light does not shine, but there is indication meter, mechanical points, closing position indicator in the closing position, indicating the circuit breaker is closed. Possible causes are poor contact breaker auxiliary contacts, such as normally closed contact is not disconnected, normally open contact not closed, resulting in green and red light does not flash light; also may be closing or closing red burn circuit break . Xi'an high-voltage outdoor vacuum circuit breaker | breaker | Huayi electricity provided by Xian Huayi power plant. Xian Huayi power plant (www.xahy.com) strong, credible, in Xi'an high-voltage circuit breakers and other industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Huayi power and you hand into the brilliant, for a better future!