Why is the kitchen short circuited, the empty opening tripping at home, and the meter box is always

Hello: 1, the air switch is in [Under the impact of short-circuit current ], it will definitely trip for protection.

2. The air switch is [Nominal current value ] should be configured reasonably, when the unit air switch and the meter box air switch [The capacity is the same ], such a fault phenomenon will occur.

3. Reasonable allocation of the capacity of the air switch is one of the basic measures for safe electricity use.

This is a skipping trip.

According to the regular standard, the action current of the next level of air opening and the air opening of the upper stage is different, and there is a time difference between tripping. The circuit used in the home, no one counts the short-circuit current, calculates the tuning, and then selects the device. Often there is a fault can be tripped on the line.

This situation is a common occurrence in the power distribution circuit when the switch trips over the level.

Indicate that your kitchen short-circuit current (or leakage current) is too large and has caused the two-stage switch to trip.

Check how much current your kitchen switch and the main switch of the meter are, and whether they have leakage protection. The cause of the trip should be analyzed according to the switch configuration.

Under normal circumstances, the kitchen air opening current should be less than the total air opening current, in this case, if there is an overcurrent, jump the kitchen switch first, and then jump the main switch.

If there is a short-circuit current in the electrical circuit, and the short-circuit current is relatively large, it is easy to cause the two-stage switch to trip at the same time, which is a normal protection trip.

The speed of the empty opening trip at home to cut off the short-circuit point is not fast enough, and the current speed is close to the speed of light, causing the total empty opening of the meter box to flow through the short-circuit current, which acts on the tripping.

Generally, the air opening has the function of short-circuit tripping, and the respective tripping curves are not the same, so many short-circuit faults are isolated by jumping one level of air opening. However, there are also a lot of short-circuit faults that jump multi-level empty open or this level of empty open does not jump, jump upper air open, which is caused by improper air open selection, their rated current is about the same, the trip curve is too similar, or the air open of the upper level is more sensitive.