On-load voltage regulating transformer for equipment workshop

Abstract

The invention discloses an on-load voltage regulating transformer for an equipment workshop. The transformer comprises a low-voltage winding, a high-voltage winding and a voltage regulating winding connected with the high-voltage winding in series. The voltage regulating winding is provided with a plurality of tapping points, one tapping point is connected with a wire outlet end, the high-voltagewinding and the voltage regulating winding are connected with a switching mechanism, the switching mechanism comprises a first movable contact and a second movable contact which are correspondingly connected with the tapping points, the first movable contact and the second movable contact are connected with an electric reactor, and the electric reactor is connected with the high-voltage winding. The on-load voltage regulation mode of a transformer in the prior art is changed, the insulation level of a voltage regulation coil of the on-load voltage regulating transformer is reduced, the voltageregulation effect is achieved, the current passing through the switch is reduced, the overall structure is simple, the practicability is high, and the on-load voltage regulating transformer is very suitable for being used in the equipment workshop.

Description

technical field [0001] The invention relates to a transformer used in a factory equipment workshop, in particular to a voltage regulating transformer. Background technique [0002] As a kind of electrical equipment that realizes high and low voltage conversion, the transformer uses a distribution transformer to reduce the voltage and supply it to the equipment when using electricity. Traditional distribution transformers are of single rated capacity and no-load capacity regulation type. Regardless of whether the distribution transformer is no-load or loaded, they all work under the same rated capacity, and the control is not flexible. The intelligent on-load voltage regulating transformer It has two kinds of rated capacity, according to the load of the equipment, the on-load voltage regulation intelligent controller automatically detects the actual equipment load to make a judgment, and sends out a control command through the on-load voltage regulation switch, in the state o...

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Problems solved by technology

Traditional distribution transformers are of single rated capacity and no-load capacity regulation type. Regardless of whether the distribution transformer is no-load or loaded, they all work under the same rated capacity, and the control is not flexible. The intelligent on-load voltage regulating transformer It has two kinds of rated capacity, according to the load of the equipment, the on-load voltage regulation intelligent controller automatically detects the actual equipment load to make a judgment, and sends out a control command through the on-load voltage regulation switch, in the state of the transformer without power failure Under this condition, the two rated capacities of the transformer are automatically switched to realize the automatic conversion of the transformer between the two rated capacity operation modes, but the production cost is relatively high, and the equipment workshop often adds or stops some large-scale equipment , resulting in a change in load

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