HET 200kVA/40kV Exciter Transformer

Mode: HET 200kVA/40kV
Rated frequency: 50Hz
Rated capacitance: 200kVA
Rated frequency: 30-300Hz
Rated input current: 400V
Rated input voltage: 2x500V, 2x550V, 2x600V
Rated output voltage: 2x20kV (Double winding)
Cooling methods: ONAN
Heat-resistance: A grade, 25# transformer oil
Working time: continuous working 60 min under rated output capacitance, winding≤65K,oil surface≤55K;
Sound level: 60dB
Impedance level:≤5%
Structure requirement: air reactor, cooper lead wire winding, Exciter transformer insulation characteristic: Exciter transformer insulation levelwill determin transformer’s safety work and insulation ageing speed. To guarantee no flashover- which coming from external, electric potential raise and cause damage to the main insulation and minor insulation. We will also set insulation layer between HV windings and turn-to-turn. Winding is cylinder type. Capacitance is determin by the winding’s area. When design, we’d try our best to make sure the top and bottom has same area, and compensate with electrostatic shield to improve the initial voltage distribution. Winding skeleton is made of compound insulation tube: can get down partial discharge and shielding the iron coil.

Principle Diagram: