HCTT 300KV/60KVA Test Transformer

Mode: HCTT 300KV/60KVA
Cylinder type                                                 Rated current: exciter current:150A HV current:0.2A
Single phase                                                   Cooling: ONAN
Frequency:50 Hz                                           No-load current;≤10%
Rated capacity:60kVA                                   Waveform distortion rate:≤3%
Rated voltage: exciter winding:0.4kV ;HV winding:300kV                                   Voltage ratio of measuring winding:1000/1

Over current ability: continuously working for 60s under 150% rated current, without any damage to transformer winding and insulation
Over voltage ability: working for 60s under 110% rated voltage, without any damage to transformer insulation
PD level: <5pC at 100% rated voltage;  <3pC at 80% rated voltage
Working time: working for 30 minutes under 100% rated current and voltage; Continuous working allowed at 2/3 rated current & voltage; and temperature rise of transformer winding is less than 65K, temperature rise of oil surface is less than 55K.
Protection: Between the test transformer and exciter winding installed MOA
Dimension: 1100mm*1600mm*2400mm               Weight: <3200kg

 
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: