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FAQ

Which is more energy saving by using 24V500W transformer lighting and 220V500W lighting?

If the transformer is not calculated, the loss is the same. If the calculation is the latter, save electricity.

The transformer zero line has broken, has the result to the household illumination circuit?

The lighting circuit mostly 3 phase unbalanced load, there will be zero drift, zero if the transformer line is broken, part of the lighting circuit to form a series of equipment in the case of two-phase circuit, circuit voltage is decreased and the lighting brightness is not enough, circuit voltage increases, the lamp burned;

3 24V100W lights, I need to use a large capacity transformer (220V change 24V)?

Pure resistive load, the power factor is 1.3 *100W=300W, is required for the capacity of the transformer.

1000 square meters low voltage.36 volts lighting power supply with multiple transformers and wires

First of all, make sure your power is too large, but you are not recommended to do so, the cost is too high, the pressure drop is too large, you can raise the voltage to 220V or higher, and then transfer to avoid power losses. If the direct transmission, the power is slightly larger, the line will be very rough, the cost will be very high

How to calculate the rated capacity of small transformers for lighting purposes?

In view of the power [kVA] conversion of each load, multiplied by the amount of consumption, according to the importance of the load, equipment location, voltage statistics, set the load line and load place of plastic case transformer capacity and its connection position. The future load power equipment shall be judged on the basis of prior installation or consideration of the economy in terms of equipment addition, installation, etc..

How many A leakage protection switches are used in 5000VA lighting transformers?

According to the working principle of the protector, it can be divided into three kinds: voltage type, current type and pulse type. The voltage protection device is connected to the transformer neutral point and the ground, when the electric shock when the neutral point voltage offset to the real estate, in order to make the action to protect the power off, but because it is the protection of the transformer low voltage network, cannot be classified protection, so the power range is large, frequent moves, so has been eliminated. The pulse current protector is a sudden change in the phase and amplitude of the three-phase unbalanced leakage current when an electric shock occurs, which is used as an action signal, but also a dead time. The current type current leakage protector is widely used, so the protector of current type is mainly introduced below.

Can the 500 volt lighting transformer be changed into an electric welder?

The no-load voltage is higher (about 70~90 V), the arc can be smoothly started, and the voltage will be reduced to about 30 V when welding.

Why the 21 lighting transformer must double winding type safety isolating transformers, prohibited the use of autotransformer.

So, safety regulations: lighting transformer must double winding type safety isolating transformer, prohibited the use of autotransformer.