First, outlined
Capacitor Installation For Transformer Test no-load tests and temperature compensation reactive components. Since transformer test their own power generating units used by the middle transformer surge to reach the test voltage transformer to reduce the capacity of generating units, compensation capacitors used to increase the power factor, reduce the cost of the investment.
Second, structural features  
Test transformer capacitor devices to shunt capacitors as the main use for single fuse protection of the input capacitors and the removal and Y, ¡÷, single phase change manually, or automatically disconnecting switch operation for the first pluggable devices to clamp the potential to make capacitors framework of the shell and fixed potential and ensure a safe and reliable operation.