HCTT 200kV/100kVA Test Transformer

Mode: HCTT 200KV/100KVA
Cylinder type,single modules                                    Rated Voltage: HV winding: 200kV; LV winding: 0.6KV
Single phase                                                                 Rated current: HV current: 166.6A ;LV current: 0.5A
Frequency: 60Hz                                                         Waveform deviation ≤3%
Rated Capacitance: 100kVA                                       Unload Current: IO<8%
Impedance voltage ≤8%

Over Current Ability: Continuous working for 300S under 130% rated current, then thermal damage or distortion of the winding shall not be occurred.
Over Voltage Ability: Over voltage at 110% UH for 60s., then it shall not happened any insulation damage for the testing transformer.
Noise: ≤60dB                                                              Transformer Oil: 25# China made
Operating Time: (starting from environment temperature)
At 100%UH, 100%IH, working one hour;
And temperature rise of transformer winding is less than 65K, temperature rise of oil surface is less than 55K.
Protection: The surge arrestors 0.6kV shall be installed among excitation winding of the transformer and transfer winding for protection purpose.

Insulation of Winding to Earth:
>1500MΩ (HV winding to LV winding and measurement winding to earth);
>1500MΩ (LV winding to HV and measurement winding to earth);
>1500MΩ (measurement winding to HV and LV winding to earth)

Electric Strength of Transformer Oil:
- Breakdown Voltage>60kV/2.5mm Moisture<15ppm
- Dielectric Loss<0.2% (at 25°C)
- Without acetylene in oil; Solidifying point>40
Dimension: Height 2000mm Weight: 2000kg

Transformer Oil: 
25# transformer oil is from Karamay Refinery. The oil indicator can reach the oil level for 500KV transformers. Factory test of test transformer should use new transformer oil supplying with transformers and perform oil inspection before or after factory test. Oil inspection report should be provided when the transformer delivered filled with oil. Quality of transformer oil should meet the requirements of SH0040-91, GB2536-90, GB7595-87, SD187-86, Class II A of IEC-296 standards. Components PCB are prohibited in the oil. When doing acceptance test on-site, the oil performance should satisfy the following requirements: DGA analysis of total hydrocarbons less than 10 mg/L, the breakdown voltage of the oil should not be less than 65kV/2.5mm, dielectric loss (90°C) is not more than 0.3%, water content is not more than 10mg/L, the gas content is not more than 1%.

Principle Diagram: