Compact structure
High sealing performance
Casing body with high environmental adaptability
Intelligent control
Strong weather resistance, easily adapt to local climate
Good sealing property, sand-proof and salt spray resistance
Flexible configuration, small size, large capacity
Main Specifications | |
Dry-type transformer type | Cast resin |
Manufacturing standards | IEC62271 |
Rated capacity | up to 25MVA |
Rated output voltage | Up to 36KV |
Rated output power | 315 ~2400kW |
Phases | Single or three phase |
Tapping | With tapping links or on-load tap changer |
Impedance | On request |
Frequency | 50Hz or 60Hz |
Vector groups | Dy, Yy, Yd as standard. Other on request |
class insulation | According to IEC 60085, Class F or Class H |
Temperature rise | With ambient temperature in accordance with IEC 60076-11 |
Type of cooling | AN/AF |
IP rate | IP00 to IP54 |
Environment class | E2 |
Climate class | C2 |
Fireproof class | F1 |
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
a) Measurement of winding resistance
b) Measurement of voltage ratio and check of phase displacement
c) Measurement of short-circuit impedance and loss
d) Measurement of no-load loss and current
e) Dielectric routine tests
f) Tests on on-load tap-changers, where appropriate
g) Leak testing with pressure for liquid-immersed transformers(tightness test)
h) Tightness tests and pressure tests for tanks for gas-filled transformers
i) Check of the ratio and polarity of built-in current transformers
Type test
a) Temperature-rise type test
b) Dielectric type tests
c) Determination of sound level for each method of cooling for which a guaranteed sound level is specified
d) Measurement of the power taken by the fan and liquid pump motors
e) Measurement of no-load loss and current at 90% and 110% of rated voltage
Varelen Electric Co., Ltd