What is secondary leakage protection and what is two level leakage protection

The secondary leakage protection system means that the power system should be set up at least the secondary protection of the leakage protection of the main distribution box and the leakage protection of the switch box, and the rated leakage action current and rated leakage action time of the secondary leakage protector in the main distribution box and switch box should be reasonably matched to form a hierarchical and segmented protection; The leakage protector should be installed on the side of the main distribution box and the switch box close to the load, that is, the power line first passes through the power switch of the gate knife, and then to the leakage protector, and cannot be installed in reverse.

The leakage protector should meet the following requirements:

1. The rated leakage action current of the leakage protector in the switch box is 30mA and the rated leakage action time, and the rated leakage action current of the leakage protector used in wet places is 15mA and the rated leakage action time;

2. The rated leakage action current of the leakage protector in the main distribution box should be greater than 30mA, and the rated leakage action time should be greater than that, but the product of the rated leakage action current and the rated leakage action time should not be greater than;

3. The leakage protector should be sensitive, and there should be no non-operation or misoperation.

The leakage protector is a group of power supply after a protection, when there is an electrical fault in the home, such as a short circuit, etc., it will automatically start the leakage protector, jump the air switch, and cut off the power at home**. The switch of the air conditioner is only the switch of the panel, and only one air conditioner panel can be controlled. The household electricity is single-phase electricity, and the two sockets are one-phase live wire (live) and one-phase neutral wire (no fault and not charged).

The three-phase socket is a one-phase live wire (live), a one-phase neutral wire (no fault and no charge), and a one-phase ground wire (no fault and no charge).

After taking this protection, if there is an unexpected situation such as a short circuit in the line, it can automatically cut off the power, which is a safety measure.

Two-level leakage protection means that the power system should be equipped with at least the main distribution box leakage protection and the switch box leakage protection secondary protection.

The rated leakage action current and rated leakage action time of the secondary leakage protector in the main distribution box and switch box should be reasonably matched to form a hierarchical and segmented protection; The leakage protector should be installed on the side of the main distribution box and the switch box close to the load, that is, the power line first passes through the power switch of the gate knife, and then to the leakage protector, and cannot be installed in reverse.

The leakage protector should meet the following requirements: the rated leakage action current of the leakage protector in the switch box is 30mA, the rated leakage action time, and the rated leakage action current of the leakage protector used in wet places is 15mA.

The rated leakage action current of the leakage protector in the main distribution box should be greater than 30mA, and the rated leakage action time should be greater than that, but the product of the rated leakage action current and the rated leakage action time should not be greater than; The leakage protector should be sensitive, and there should be no non-operation or misoperation.