Varelen - Mobile Subsation

• Use Location: Outdoor, Indoor
•  Altitude: ≤1000m
• Ambient temperature: -30?~+45?
• The highest daily average temperature: +30?
• Minimum annual average temperature: +20?
• Seismic intensity: 8
• Outdoor wind speed: ≤35m/s
• Relative air humidity: the daily average ≤ 95%, the monthly average ≤ 90%
• Special requirements: please contact us for customized design

• Primary voltage : 10kV, 6kV
• Secondary voltage : 1.2kV , 0.4kV
• Capacity : 315 ~ 2500kva
• HV switch voltage : 12kV, 7.2kV
• HV switch current : 630A
• High voltage circuit breaker Specifications : 630A/12kV, 7.2kV
• Breaking capacity of circuit breaker : 25kA
• Protection class : IP00-IP54
• Power frequency withstand voltage : 42kV/ 1min, 23kV/1min
• Lightning impulse withstand voltage(Peak) : 75kV, 60kV

For each transformer are prepared and issued a test report, in accordance with IEC 60076.  except for routine tests, we also offer type tests and specialised tests to meet all customer requirements. We make what matters work for our customers in a safe and reliable way.

Routine test

•  Measurement of winding resistance
•   Measurement of voltage ratio and check of phase displacement
•  Measurement of short-circuit impedance and loss
•   Measurement of no-load loss and current
•   Dielectric routine tests
•   Tests on on-load tap-changers, where appropriate
•   Leak testing with pressure for liquid-immersed transformers(tightness test)
•   Tightness tests and pressure tests for tanks for gas-filled transformers
•  Check of the ratio and polarity of built-in current transformers

Type test

•  Temperature-rise type test
•   Dielectric type tests
•   Determination of sound level for each method of cooling for which a guaranteed sound level is specified
•  Measurement of the power taken by the fan and liquid pump motors
•  Measurement of no-load loss and current at 90% and 110% of rated voltage