Transformer, Tap-changing Transformer, power transformer

1. Overview
The transformer equipped with on-load tap-changing switch is called as On-load tap-changing Transformer.

On-load Tap-changing Transformer is a transformer whose several tap joints are educted from transformer winding passing through on-load tap-changing switch and change tapping location and its effective number of windings in case of ensuring not to rupturing load current and thus making use of changing transformer ratio to aim at unchangeable output voltage. Energy during changing and tapping process usually utilizes transition resistance to absorb limtation cycle current.

On-load Tap-changing Transformer is mainly used for:
1). Stabilizing electric-network volage in every on-load center to icrease quality of power supply.
2). Distributing loads between networks using on-load tap-changing acting as interconnection transformer between two networks.
3). Site where utilizing power supply with on-load regulation current and power to increase production efficiency.
4). Site where voltage should be strictly controlled, such as electric industry, medicine etc.

2. Normal service conditions
1). Elevation can not be over 1000m, indoor or outdoor
2). Highest ambient temperature +40, highest dailyaverage temperature +30
3). Highest annual average temperature +20, lowest temperature -25.

We can provide transtormer operated in special conditions according to the requirements of users.