The difference between [electromagnetic] and [electronic] leakage circuit breaker

Update date:2017-10-22 Source:maxge

The so-called leakage circuit breaker is divided into two types: electronic type leakage circuit breaker and pure electromagnetic type leakage circuit breaker.

1. The electronic type residual current circuit breaker is he in a number of electronic components to form a integrated circuits, when the leakage occurred in power source, meet the current action, it will output signal through the electronic amplification function to promote body, breaking a leakage circuit. His shortcomings: need to have sufficient auxiliary power supply, electronic components to resist interference performance, large current impact is easy to generate misunderstanding movement, electronic components are easy to age, the service life is short.

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2. The electromagnetic leakage breaker, it is a material with high permeability, permanent magnet steel and other metal materials after heat treatment, precision machining purification assembled a mechanical type residual current circuit breaker, when the leakage at the specified operating current, he was the output signal by the precision machining, heat treatment after purification assembly of a mechanical electric machine drive breaking a residual current circuit breaker.

Its disadvantages: high material, sophisticated technology, high manufacturing cost. But it has solved the electronic defect. Heald above: at present, the developed countries such as Germany, the United States, France and other developed countries in the late 40 s are developing, manufacturing and application of pure electromagnetic leakage breaker, but developing countries should be bound by economic conditions, general GongKuangYe and residential generally choose electronic products, but with the retrofit project in the coastal developed areas in China provinces and construction has been a lot of choose pure electromagnetic residual current circuit breaker, have made great contribution to the safe, to this end, the ministry of construction issued article JGJ46-2005.8.2.13 also stated in pure electromagnetic leakage circuit construction field preferred products in China. As is known to all, the construction site is a specific place, because it is a temporary electricity system, can't do with the industrial and mining enterprises and residential electricity standard configuration, large equipment and equipment liquidity is stronger, large current start frequently, electricity load more uncertain factors, in this way, residual current circuit breaker has a higher requirement for the construction site, only to meet the above requirements, the construction site electricity safer, more effective.

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Performance comparison of electromagnetic and electronic leakage circuit breakers:

1. Reliability security

Because there are fewer electromagnetic parts, fewer nodes and the probability of failure; In addition, its performance is not affected by the voltage impact, the anti-strong electromagnetic interference is good, so its comprehensive performance is good, more reliable, more secure

2. Voltage influence

 without auxiliary power cord: electromagnetic residual current circuit breaker, because there is no electronic amplifiers, their work does not need auxiliary power, therefore is not affected by voltage, even only one with the phase line (fire), as long as there is leakage current to flow through, it can be action, protection, and electronic is no good, if the electronic amplifier power cord, there was a broken with amplifier cannot work, if the Ren Yixiang shock/leakage (fire) online, can't action, dangerous accident occurs. For example: A 4 p electronic type residual current circuit breaker, the amplifier in the N and C, if N line line/break off, and then get an electric shock, or in A to C phase electronic type residual current circuit breaker will not trip, but the electromagnetic leakage breaker will trip, because it does not need auxiliary power, as long as there is leakage power, can move, so the installation of the electromagnetic leakage breaker safer.

Electronic type residual current circuit breaker performance break so far from the power supply, even the voltage fluctuation, voltage is too high, will blow out the other components, the voltage is too low, the amplifier does not work, and the electromagnetic leakage circuit breaker is not affected by voltage fluctuation and strong magnetic fluctuations, as long as there is leakage current to flow through, it can move, protection, so the electromagnetic leakage electrical installation on personal, more safety equipment.

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As the amplifier in the electronic type residual current circuit breaker, there are a lot of electronic components, easy impulse voltage in the circuit and electromagnetic interference, especially as a construction site, large power equipment on and off, prone to impulse voltage, electronic type residual current circuit breaker is easy to produce false action, the user electricity state is not stable. The electromagnetic circuit breaker is not affected by voltage shock and strong magnetic wave.



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