HET 175kVA/2.91kV,1.9kV Exciter Transformer

Mode: HET 175kVA/2.91kV,1.9kV
Rated frequency: 22Hz
Working frequency: 22~300Hz
Rated capacitance: 175kVA HVwinding is independent winding
LV winding voltage: 2x350V (tap voltage 400Vx2)
HV winding voltage/current: 1.9kV / 92A; 2.91kV/60A
LV winding current: 2x260.4A
Cooling methods: ONAN
Heat‐resistance: A grade, 25# transformer oil, winding ≤65K, oil surface ≤55K; Sound level: 65dB Impedance level: ≤6%
Structure requirement: oil immersed shell type; silicon steel plate is DQ130‐30 high quality cooling rolling silicon steel plate, Bm value very low; Transformer has double coils, cooper lead wire, Low voltage winding and HV winding, adopt electrostatic shielding between two windings which has the function of isolation filter;equips measuring coil, used to measure HV side voltage; there are oil expansion tank and moister absorber on transformer; Oil temperature thermograph and oil level indicator are set on oil expansion tank; Transformer’sspare part and component, e.g. bushing, valve and oil conservator’s structure and layout will not affect the transportation. There are also enough safety distance between transformer HV and LV winding, will not cause partial discharge and corona when testing.

Principle Diagram: