Origin	China
Brand Name	Amtech

A disconnector must work when there is faulty current. According to the national standard GB11032, dynamic ampere-second characteristic is to be tested at power frequency current 800A, 200A, 20A, 5A virtual value at China National Center for Quality Supervision and Test of Insulators and Surge Arresters.

MOA is connected with wire via the disconnector. Under normal conditions, when lightning current and operating over-voltage current pass through MOA, the disconnector will not be actuated; under abnormal conditions, when MOA fails to operate, the disconnector will be actuated and the wire connected to the MOA will be cut off automatically, thus maintaining the continuous power supply and keeping enough insulating distance between the wire and MOA.

The disconnector is installed in series with MOA. When MOA works properly, non-actuation of the disconnector guarantees MOA’s normal performance. As National Standard GB11032 stipulates that the disconnector should withstand:

a. Long duration current impulse test;

b. Loading test;

The type test made by China National Center for Quality Supervision and Test of Insulators and Surge Arresters proves that the disconnector has non-reaction capability when withstanding 2ms 600A current impulse and 4/10µs 100kA high current loading.