JS outdoor rated distribution class oil-filled current/voltage transformers are compact wound type single phase metering transformers intended for revenue metering. These current/voltage transformers are built-to-order to customer specifications. JS transformers can meet many standard revenue metering applications with up to two independent cores from 15 kV up to 38 kV. This combined housing is available with ANSI 70 gray porcelain insulator considered as the standard product. Hermetic sealing of the design is accomplished using a gas cushion above the oil in the tank to prevent free-breathing outside moisture-ladened air.
The JS provides reliable performance in service due to the conservative insulation system used at the lower distribution voltages.