Varelen Electric Co., Ltd.
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- Varelen - Mining Substation
Varelen - Mining Substation
Special & harsh environmental. Excellent explosion-proof performance and mechanical strength. Fire-proof, nonpoisonous air created.
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- Transformer Type: dry type
- Rated capacity: up to 8000kva
- Rated voltage: up to 11kv
- Frequency: 50/60Hz
- Phase: 3 Phase
- Winding material: Copper /Aluminum
- Insulation class: H, C
- Vector group: YNd1d1
- Cooling: AN
- Protection Enclosure: IP00 to IP54
- Explosion-proof type: ExdIMb
- Zone: Zone 1, Zone 2
Mining Flame-proof Mobile Substation is designed specially for environment of methane mixture gas, coal dust and potentially explosive areas. It’s widely used in coal mines, non-ferrous metal mines, tunnel projects etc.
The Explosion-proof Mobile Substation consists of mainly explosion-proof high voltage switch, explosion-proof transformer, and explosion-proof low voltage switch. The transformer is bolted to the high and low voltage switches.
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 load loss
- Measurement of no-load loss and current
- Separate-source AC withstand voltage test
- Induced AC withstand voltage test
- Partial discharge measurement
Type test
- Lightning impulse test
- Temperature-rise test
Special test
- Partial discharge measurement
- Measurement of sound level
- Short-circuit test