ABB KIR-11 INDOOR CURRENT TRANSFORMER T269550

The ABB KIR-11 is a high-voltage Indoor Current Transformer (CT). Its highly characteristic "Anvil" profile comes from its vacuum-cast polyurethane construction, designed to withstand the electrical stresses of 15kV class systems. This unit is a Wound-Type transformer (as opposed to a "donut" or window-type), meaning the primary conductor is integrated into the unit. It is used for high-accuracy metering and relay protection in medium-voltage switchgear. The PG&EM250059 code is a manufacturing-specific tag from ABB’s Power Grids & Electrification division.