Conditions of use for dry-type transformers

1, the dry-type transformer should not be installed on the vibrating equipment, because the main circuit connection screw inside the dry transformer is easy to loose, and many dry transformers are damaged for this reason.
2, wiring problems: the input end of the dry transformer is best connected to an air protection current value can not be too large to prevent the occurrence of short circuit burning will not be too serious. The N terminal must not be grounded. Try not to make the control line too long. Because this makes the control board susceptible to electromagnetic interference and misoperation, it will also cause damage to the control board, and it is best to use a shielded line more than 2 meters long. Do not install a contactor with high current and frequent action next to the dry transformer, because it interferes with the dry transformer very much, and often causes the dry transformer to misoperate and display fault.

3, often to stop the dry transformer is best not to rely on the dry transformer itself brake, but add a brake unit or use mechanical brakes, otherwise dry transformer is often affected by the motor back electromotive force impact, the failure rate will be greatly improved.

4, if the dry transformer often runs below 15Hz at low speed, the motor should add another cooling fan!

5, dust and moisture are the deadliest killers of dry transformers. It is best to install the dry transformer in the air-conditioned room, or installed in the electric cabinet with a dust filter net, and the dust on the circuit board and the radiator should be cleaned regularly; Shut down a dry transformer for a period of time before the power is best to use a hair dryer to blow the circuit board.

6, dry transformer when the cooling fan is broken, it will issue overheating protection, when the fan sound should be replaced.

7, some factory power supply is generator generation, the voltage is unstable, the dry transformer is often damaged, the generator is equipped with voltage regulation or overvoltage protection device, the effect is very good.

8. Lightning protection is also important. Although it rarely happens, when a dry transformer is struck by lightning, it will be badly damaged. Dry-type transformers with constant pressure water supply are the most vulnerable to lightning strikes because they have a mine water pipe reaching into the sky.