HCTT 300kV/1200kVA Test Transformer

Mode: HSC1CTT 300KV/1200KVA
Cylinder Type                                                                         No-load current ≤10%
Single phase                                                                            Waveform deviation ≤3%
Frequency: 60Hz                                                                    Impedance voltage ≤10%
Rated Capacity: 1200kVA                                                      Dielectric loss < 0.4%
Rated voltage: 300kV                                                             Noise level < 60dB (Full load at 4 meter distance)
Rated Current: 4A                                                                   Measuring winding voltage ratio: 1000/1
Cooling methods: ONAN                                                         PD Level: <5pC at 100%UH ,<3pC at 80%UH of complete test system

Running time and temperature raise: continuous running 1 hour at 100% UH and 100%IH; 1hour on, 1 hour off.everyday 8cycle. Transformer winding temperature raise less than 65K, oil surface temperature raise less than 55K.
Over-current capability: withstand 300s at 120%(4.8A)IH, no damage to transformer winding.
Over-voltage capability: withstand 60s at 110%(330kV)UH, no damage to transformer insulation.

 
Insulation of Winding to Earth:
>2500MΩ (HV winding to LV winding and measurement winding to earth);
>2500MΩ (LV winding to HV and measurement winding to earth);
>2500MΩ (measurement winding to HV and LV winding to earth)
Insulation Level: 5kV/1min (measurement winding to earth; HV terminal to earth; LV winding to earth)
Electric Strength of Transformer Oil:
Transformer Oil: 25# China made
- Breakdown Voltage>60kV/2.5mm
- Moisture<10ppm
- Dielectric Loss<0.5% (at 90°C)
 Without acetylene in oil; Solidifying point>40
- Air content < 1%

Principle Diagram: