300 / 500 V
450 / 750 V
5.8 / 10 (12 KV) (Permissible Service Voltage : 6.35 / 11 KV)
3.5 / 6 (7.2 KV) (Permissible Service Voltage : 4.2 / 7.2 KV)
600 / 1000 V (permissible Service Voltage : 720 / 1200 V)