3 phase, Oil immersed Zig-Zag connected transformers with voltage class upto 33KV class. Vector group Zn0Zn0Yn11Zn0Yn11d Application IndoorOutdoor Continuous operation Standards IS 2026IEC 60076 Fittings & accessories As per customer requirements. Special Features Design ensures the zero phase impedance & fault current. Limits the magnitude of transient over voltages. Long life span.