HCTT-500KV/500KVA AC Test Transformer

Mode: HCTT 500KV/500KVA
Cylinder type,  Single phase,  Frequency:50Hz
Rated Capacity:500kVA                                   
Rated Voltage: Excitation winding: 2x3kV  
                            HV winding: 500kV
                            Accumulate winding: 3kV
Rated Current: Excitation current :2x83.3A  
                            HV Current:1A,  
                            Accumulate current: 83.3A
(HV terminal of the transformer will be earthed through a current transformer 5/5 so as to check the current value of HV side and ensure safety of the operators and equipment.)
Waveform deviation ≤3%,              Unload Current: IO<10%
Impedance voltage ≤10%,               Voltage Ratio of Measurement Winding:1000:1

Over Current Ability: Continuous working for 3 minutes under 150% rated current, then thermal damage or distortion of the winding shall not be occurred.
Over Voltage Ability: Over voltage at 110% UH (550kV) for 60s., then it shall not happened any insulation damage for the testing transformer.
Insulation Level:18kV/1min(low voltage terminal to earth)
Noise:≤60dB
PD Level: <5pC at rated voltage (500kV)
                  <2pC at 80% of rated voltage (400kV)
Dielectric loss: less than 0.5%.
Color: Selectable
Operating Time:(starting from environment temperature)
One hour on and one hour off at 100% rated current & voltage;

Continuous working allowed at 80% rated current & voltage; and temperature rise of transformer winding is less than 65K, temperature rise of oil surface is less than 55K.
Protection: The surge arrestor 3kV shall be installed among excitation winding of the transformer and transfer winding for protection purpose.
Injection and release valve for transformer oil are available.
Dimension: Dia. φ2100/φ2400×4500
Weight: 16000kg    

Principle Diagram: