What does it mean that Heilip frequency converter displays e 13?

Hailipu frequency converter shows that e 13 is an overcurrent fault. Mainly because the motor current exceeds the peak current limit of the inverter.

Overcurrent protection mainly includes short circuit protection and overload protection. Short-circuit protection is characterized by large setting current and instantaneous action. Electromagnetic current trippers (or relays) and fuses are often used as short-circuit protection elements. Overload protection is characterized by small setting current and inverse time limit action. Thermal relay and delayed electromagnetic current relay are often used as overload protection elements.

Fuses are also often used as overload protection elements, and there is not much impact current.

In TN system, when fuse is used for short-circuit protection, the rated melt current should be less than1/4 of single-phase short-circuit current; When the circuit breaker is used for protection, the setting current of the overcurrent release of the instantaneous action or short delay action of the circuit breaker should be less than 2/3 of the single-phase short-circuit current.

Extended data:

When unexpected circumstances such as load short circuit, overload or control circuit failure occur, the current flowing through the switching transistor in the regulator will be too large, which will increase the power consumption of the lamp and cause heat. If there is no overcurrent protection device, the high-power switching transistor may be damaged. Therefore, overcurrent protection is usually used for switching regulators.

The most economical and simple way is to use a fuse. Because of the small heat capacity of transistors, ordinary fuses can't play a protective role, so quick fuse blowing is often used. The advantage of this method is easy protection, but the specification of the fuse needs to be selected according to the requirements of the safe working area of the specific switching transistor. The disadvantage of this overcurrent protection measure is that it is inconvenient to change the fuse frequently.