the LGB high voltage dry-type current transformer produced by BEIJING NOBLEWELL ELE-TECH CO., LTD is different from other similar products in CHINA and abroad. With innovative deisgn , the products have no oil , no  ceramic and no gas . the products utilize patented structure with silion rubber skirts as the outer insulation.our LGB dry-type current transformer can be used for electrical metering and for protection application and it can be used both for 50HZor 60 HZ. This product can be installed bothe indoor and outdoor.