Voltage transformers (VT), also called potential transformers (PT), are used for metering and are designed to present negligible load to the supply being measured . They have an accurate voltage ratio to enable accurate metering.VT1329 has the following specifications: 110 Vrms 2.3 V 3.3 k Ω 48 : 1 4.0 kV AC -10 ... +60° C Pin