... (1000 kv, 750, 550, 330, 220, 110, 66) series sleeve type current transformer, including TPS, TPY level transient protection sleevetype current ... Transformer TPY transient protective current 500KV/GIS use CT With rising seat CT 35kv/10kv Outdoor pouring transformer ... GB1208-2006 Chinese standard International Electrotechnical IEC60044- 1-2003 British BS EN60044-1-1999 United States IEEE C57.131993And ...