HCTT-2x375kV/375kVA AC Test Transformer

Mode: HCTT 2x375KV/375KVA
Cylinder type       Single phase
Working frequency: 50Hz
Rated capacity: 375KVA
Rated input voltage: 3KV
Rated output current: 750KV  
Rated input current: 62.5*2A
Rated output current: 0.5A 
Impedance voltage: ≤13%
Voltage unevenness: <±5%

Over current ability: continuous working for 2 min at 130% rated current without any damage and distortion to transformer winding;
Over voltage ability: working for 60s at 110% rated voltage without any damage to transformer insulation
Working time: continuous working for 60 min under 100% rated voltage and rated current is allowed;
Temperature rising:  temperature rising of transformer winding is ≤65K, temperature rising of transformer oil is ≤55K
Protection: between lower LV winding and upper LV winding of test transformer installed 3 KV MOA.
Height: about 6400mm
Weight: 12000kg

Upper stage:
HCTT 187.5KVA/375KV
Cylinder type
Single phase
Working frequency: 50Hz
Rated capacity: 187.5KVA
Rated voltage:  LV 3KV     HV 375KV
Rated current: LV current: 62.5A    HV current: 0.5A
Impedance voltage: ≤4.5%
Dielectric loss: <0.4%
Noise level: ≤60db
PD level: <5pC under 100% rated voltage; <3pC under 80% rated voltage

Over current ability: continuous working for 2 min at 130% rated current without any damage and distortion to transformer winding;
Over voltage ability: working for 60s at 110% rated voltage without any damage to transformer insulation,  waveform distortion ≤5%;
Working time: continuous working for 60 min under 100% rated voltage and rated current is allowed;
Temperature rising:  temperature rising of transformer winding is ≤65K, temperature rising of transformer oil is ≤55K

Lower Stage
HCTT 375KVA/375KV
Cylinder type
Single phase
Working frequency: 50Hz
Rated capacity:  LV Capacity: 375KVA  HV Capacity: 187.5KVA  Total capacity: 187.5KVA
Rated voltage:  LV: 3KV     HV :375KV   Total voltage: 3KV
Rated current: LV current: 2*62.5A    HV current: 0.5A  Total Current: 62.5A
Impedance voltage: ≤4.5%
Noise level: ≤60db
PD level: <5pC under 100% rated voltage; <3pC under 80% rated voltage
Over current ability: continuous working for 2 min at 110% rated current without any damage and distortion to transformer winding;
Over voltage ability: working for 60s at 110% rated voltage without any damage to transformer insulation,  waveform distortion ≤5%;
Working time: continuous working for 60 min under 100% rated voltage and rated current is allowed;
Temperature rising:  temperature rising of transformer winding is ≤65K, temperature rising of transformer oil is ≤55K
Oil electric strength test: Breakdown voltage ≥65kV / 2.5mm; moisture <10ppm; dissipation factor ≤0.25% (25 ℃)

Principle Diagram: