The difference between electronic and electromagnetic leakage trippers

The function of leakage tripping device

The device is usually attached as an accessory to the circuit breaker, and the leakage trip is mainly used to release the holding mechanism and make the circuit breaker automatically open. When there is leakage or the protected lines if happen person get an electric shock will pass the zero sequence current transformer current vector, and is not equal to zero, at the same time also can produce the left and right sides of the transformer secondary coil voltage, and through the integrated circuit gradually enlarge when reaches the setting value, can use the leakage trip in 0.1 seconds to complete to cut off the power supply, to get an electric shock and earth leakage protection.

The principle difference between electronic and electromagnetic leakage trippers

First of all, electronic leakage tripping device usually USES some circuit electronic components to detect the current in the circuit whether there is overload and short circuit phenomenon, if there is then it will immediately send a signal to prompt the circuit breaker to perform the corresponding protection action.

Secondly, the electromagnetic leakage tripping device makes use of the suction force generated when the current changes suddenly to make the tripping device move, and at the same time make the circuit breaker perform the corresponding protection action.

In the end, these two different types of leakage trippers are fundamentally different in principle, but they ultimately serve the same purpose, providing leakage protection.

The characteristics of electronic and electromagnetic leakage trippers are different

First of all, the biggest characteristic of electromagnetic leakage tripping device is that it will not be affected by the power supply voltage. More generally speaking, it can keep normal working state without power supply. Moreover, the zero-sequence transformer inside it is different from the tripping device.

Secondly, the electronic leakage tripping device will be affected by the power supply voltage in terms of function realization. When the voltage is low or one or two phases are missing, the internal circuit board will not continue to work, thus making the electronic leakage tripping device lose its due protection function.

In some of the more developed countries are usually adopts the electromagnetic leakage circuit breaker tripping is much, but the appearance of the electronic and magnetic is basic about the same, the specific identification method is to use a power cord to test, namely 0 v test, if can action shows that the circuit breaker is to use electromagnetic trip, on the contrary if additional power is needed to test is that electronic tripping device, at last the two slight differences in price also difference.

Electromagnetic leakage tripping device features: strong anti-interference ability, high reliability, the action function will not be affected by the power voltage, but the structure design is relatively complex and expensive.

Electronic leakage tripping device features: easy to realize high sensitivity, relatively simple structural design, convenient daily maintenance and adjustment, and relatively economical in price. However, the anti-interference ability of the trip is not very strong, and the action function will be affected by the power supply voltage.

The above is the difference between electronic and electromagnetic leakage trippers, I hope to help you.