supply of 11kv / 110 volt epoxy resin cast pts. accuracy class 0.5 for consumer metering. supply of epoxy resin cast 11kv / 110volt pt , supply of 11kv / 110 volt epoxy resin cast pts. accuracy class 0.5 for consumer metering , 11kv / 110v epoxy resin castthree phase three limb dry type pt as per is-3156 / 1992 withamendments having accuracy class 0.5, burden-20 va, frequency-50 hz, transformation ratio 11kv / 110v , nominal system voltage 11kv, highest system voltage 12kv, no of phase 3, one minute power frequency withstand voltage 28kv & 3 kv respectively for primary & secondary. primary ( r, y, b ) and secondary ( r, y, b, n ) , clearly incdicated as per is. manufacturers name, division code upcl-etd rdr should be embosed on surface of pt. pt shall be provided with vector diagram plate as per relevant provisionshowing primary & secondary terminals for use consumer for use metering.