HET 150kVA/1.4kV,0.7kV Exciter Transformer

Mode: HET 150kVA/1.4kV,0.7kV
Operating frequency: 45-300Hz
Rated capacitance:150kVA
LV winding voltage :350Vx2
Maximum input current: 428.6A
HV winding rated voltage/current: 1.4kV/105A
Cooling methods: ONAN
Partial discharge level <10pC.
Heat-resistance: A grade, 25# transformer oil
Working time: one hour on, two hour off, three cycle per day, winding≤65K, oil surface≤55K;
Sound level: 65dB
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’s spare 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: