Can the two empty open be connected in parallel, and can the two empty open parallel be connected wi

Hello: 2P63A is a leakage circuit breaker, right? Working principle of single-phase leakage circuit breaker:

Under normal circumstances, the zero sequence current of the circuit is zero, that is, the current of the live wire and the zero line is balanced and offset by each other, in other words, as the saying goes, how much current does the live wire go to the zero line and how much current does the zero line return, and the zero sequence current transformer in the circuit breaker has no current output, and the leakage circuit breaker can be closed and operated normally.

If the leakage phenomenon occurs in the back-end circuit of the leakage circuit breaker, the neutral current of the live wire is unbalanced, and the zero-sequence current transformer has a current output, and when it reaches a certain value, the circuit will be triggered to perform the circuit breaker tripping and breaking (that is, tripping).

Judging from the diagram you provided, there is nothing wrong with the wiring, you can close the 2P circuit breaker upstairs first, pull away the 2P downstairs, open the load on the upstairs, if it does not trip, and then test the downstairs in the same way, if it does not trip. The problem should be that the upstairs and downstairs have connected the neutral wires together during wiring, so regardless of whether the upstairs or downstairs is connected to the load, the two leakage circuit breakers detect the leakage current and trip.

Solution: One is to separate the upstairs and downstairs zero line. Second, if it cannot be separated due to the conditions, then remove the leakage circuit breaker on the right in the figure, connect this part of the load to the lower end of the leakage circuit breaker on the left, and replace the leakage circuit breaker with a larger rated current if the capacity is not enough.

The switches are all connected in series, it is recommended that you install a high-power air open, which cannot be connected in parallel.

Is it okay to use a load of one load in the outgoing line in parallel with two empty open parallels, and the maximum current allowed to disturb is not equal to the sum of the two empty open loads, which is resolutely not allowed in the electricity regulations. Two empty openings cannot drive a piece of equipment, and if two small capacity switches are used in parallel on a large load, it is not allowed. Although the normal operation can be used by hand to close or play the two switches at the same time, in fact, it is impossible to close or open the two switches at the same moment, so the switch that is opened or closed after the switch will be subjected to a current that exceeds its rated value, causing the contact to burn, and the switch contact will be damaged after a period of time.

Especially in the case of load failure, there is a switch of its own protection action to break the load circuit, and the protection of the two switches is more unlikely to act at the same moment, which will make the switch that is disconnected first completely damaged, and may cause skipping tripping, so that the fault expands. Therefore, if two switches are connected in parallel instead of one switch, even if all the parameters of the two switches are the same, it will not work.

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Under certain conditions, it is possible to use one load of the outgoing line in parallel with two empty open parallels. But there are a few things to pay attention to:1

The rated current of the air opening should meet the requirements of the load current. 2.When the parallel load is opened, it is necessary to ensure that the rated current deficiency value of the two empty openings is the same, and the rated current value of each component in the parallel load circuit should be less than or equal to the rated current of the two empty openings.

3.The insulation performance of the empty outgoing line and the load line should be good enough to prevent short circuits and other safety problems. 4.

The parallel design of the air open should be carried out by a professional electrical engineer to ensure the correctness and reliability of the parallel design. In short, when multiple switches are used in parallel to control a one-volt search circuit load, it is necessary to ensure that it is safe and reliable, and at the same time, it is also necessary to ensure that the rating of each switch in parallel and the insulation performance of the parallel line can meet the requirements of the load.

Kiss, it is recommended that it is better not yo. There can be some problems with two empty open parallel using one load of the outgoing line, depending on the empty open and nuclear load used. Here are some possible scenarios:

1.The rated current value of the empty opening is lower than the rated current value of the load: If the load current is greater than the rated current value of the empty opening, then it may cause the empty opening to trip or even burn the change.

Therefore, it is necessary to choose an air switch where the rated current value is greater than the load current. 2.The rated current value of the air opening is higher than the rated current value of the load:

If the load current is less than the rated current value of the empty switch, then the current may not reach the empty open trip value during load operation, resulting in the inability to achieve overload protection. 3.Number of load switching times that are dry on:

If the load works for a long time and frequently switches different air openings, it may accelerate the decay of the air opening life. Considering the above possible problems, if you really need to connect two empty switches in parallel for one load, it is recommended that you choose an empty switch with a large rated current value and minimize the number of switching of the empty switch. Please note that this use may affect the safety life and reliability of the air opening, and the necessary safety and reliability assessment is required.

Hello dear, I'm glad to answer your questions Two empty open parallel connections can be used to load all the way out. Parallel connection means that they are connected together in a parallel manner in a circuit. When two air-open devices are connected in parallel, they share the load current.

This can provide a higher rated current capacity to meet the demands of the load. However, before making a parallel connection, make sure that the current ratings and other electrical parameters of the two air-open devices are compatible, and that they are both comfortable enough to accommodate the load. In addition, ensure that the power circuits and wires and cables can withstand the additional load from parallel connections.