3 phase, Oil immersed Zig-Zag connected transformers with voltage class upto 33KV class. Vector group – Zn0/Zn0Yn11/Zn0Yn11d Application – Indoor/Outdoor Continuous operation Standards – IS 2026/IEC 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.