Three-Phase Oil-Immersed Transformer
Keywords:
Three-Phase Oil-Immersed Transformer
产品描述
- 产品描述
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- Commodity name: Three-Phase Oil-Immersed Transformer
Instrument transformer refers to a special purpose transformer. It has two main purposes: one is to expand the range of AC electrical instruments, and the other is to isolate high voltage and large current and turn it into low voltage and small current.
Three-phase oil-immersed transformerNormal operating conditions of oil-immersed transformers:
1. The altitude does not exceed 1000m indoors or outdoors
2. The highest ambient temperature +40℃ The highest daily average temperature +30℃
3. The highest annual average temperature +20℃, the lowest temperature -25℃
4. According to user requirements, transformers that operate under special conditions can be provided.
Performance characteristics:
a. The low-voltage winding of the oil-immersed transformer generally adopts a cylindrical structure with copper foil wound except for the small-capacity copper wire; the high-voltage winding adopts a multilayer cylindrical structure to balance the ampere-turn distribution of the winding and cause magnetic leakage Small, high mechanical strength, strong short-circuit resistance.
b. The iron core and the winding are each adopted with fastening measures. The fastening parts such as the height of the device and the low voltage lead are equipped with self-locking lock nuts, and the non-suspending structure is adopted to withstand the shock of transportation.
c. The coil and iron core are vacuum dried, and the transformer oil is vacuum filtered and oiled to minimize the moisture inside the transformer.
d. The oil tank adopts corrugated sheet, which has a breathing function to compensate for the volume change of the oil caused by temperature changes, so this product has no oil conservator, which obviously reduces the height of the transformer.
e. Because the corrugated sheet replaces the oil conservator, the transformer oil is isolated from the outside world, which effectively prevents the entry of oxygen and water from causing the degradation of insulation performance.
f. According to the above five points of performance, it is ensured that the oil-immersed transformer does not need to be changed during normal operation, which greatly reduces the maintenance cost of the transformer and prolongs the service life of the transformer.
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