HGTS 325KV/162.5KVA Gas Insulated Test Transformer

Mode: HGTS 325KV/162.5KVA
Casing, Stationary type                                     Frequency: 50Hz
Single phase                                                        Rated Capacity: 162.5kVA
Rated Voltage: LV Voltage: 2x0.6kV; HV winding: 325kV
Rated Current: LV current: 2x135.4A HV Current: 0.5A
Low voltage winding can be serial or parallel connected:
When serial connected, HV output is 162.5kV/0.5A
When parallel connected, HC output is 325kV/0.5A
(Test transformer HV terminal earth terminal earth via 5/5 CT, the HV side current can be supervised and guarantee the safety of operator.)
Waveform deviation <3%                    Non-load Current: <10%                          Impedance voltage <20%
Over Current Ability: Continuous working for 300S under 120% rated current (0.6A), then thermal damage or distortion of the winding shall not be occurred.
Over Voltage Ability: Overvoltage at 110% UH (357.5kV) for 60s., then it shall not happened any insulation damage for the testing transformer.
Discharge test: test at 275kV, discharge via damping resistor three times, no damage to transformer.
Partial discharge level: ≤5pC, under 100% rate voltage
Noise: ≤65dB                                           Dielectric loss: <0.5%                               

Operating Time: 
Meet the requirement of 800pF load, test at 275kV,15min on, 15min off, every day 8cycle;
2000pF load, test voltage 275kV, 2min on, 15min off, every day 8 cycle;
2000pF load, test voltage 145kV, 15min on, 15min off, every day 8 cycle.
Protection: Equip with 0.6kV surge arrestors at test transformer exciting winding.

Principle Diagram: