Oil-immersed transformers
220kV double split transformer
To address the large-scale, overcapacity concentrated power generation in new energy power stations, a dual-split structure is adopted. Each phase of the dual-split transformer consists of one high-voltage winding and two low-voltage windings with identical voltage ratings and capacities. Under normal operation, the dual-split transformer transmits electrical energy between the high-voltage and low-voltage windings. The two low-voltage windings, which share the same voltage and capacity, can operate independently or in parallel to handle different loads. It is primarily applied in new energy power generation markets such as wind power and photovoltaics, as well as in large state-owned enterprises.
Product characteristics
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Low lossreasonably select the working magnetic density of the core
Reduce the working electrical density of each winding
Reduce structural loss
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Low partial dischargecontrol dust control
Rounded electrode
Vacuum oiling
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Low noiseLow noise fan motor
Core end coated with epoxy glue
Retrofit oil tank soundproofing
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High reliabilitystrong short-circuit resistance
No leakage of product
Elimination of local overheating
Operating condition
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-15℃～+40℃Ambient air temperature
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≤90% (when the temperature is 25℃)Ambient air monthly mean maximum relative humidity
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≤2KMAltitude
Specification parameter
| Capacity | 100000-300000kVA |
| Voltage | 220/35kV |
| Vector group | YNd11-d11 |
| Impedance | 15~25% (semi-crossing) |
| Capacity ratio | 100/50+50 |
