fuse disconnect switch(DS) outdoor high voltage isolate switch is the high voltage switch equipment of composite strudcture, is suitable for outdoor 22KV line net with voltageand no load, to make opening and close. With type manual operate machinery, can avoid earth line with power and composite flash-locks ets.

A transformer is an electrical apparatus designed to convert alternating current from one voltage to another. It can be designed to “step up” or “step down” voltages and works on the magnetic induction principle. … A voltage is then induced in the other coil, called the secondary or output coil.