Hot summer, the role of dc mini circuit breaker is particularly prominent, then how safe use of DC circuit breakers? The following summary of the safe use of circuit breaker procedures, we hope to help.
Safe use of circuit breakers
1. The circuit of dc mini circuit breaker is connected, you should check the wiring is correct. Can be checked by the test button. Such as the circuit breaker can be properly broken, indicating that the leakage protection device installed correctly, or should check the line, troubleshooting.
2. the circuit breaker due to short circuit after the break, the need to check the contact, if the main contact burning serious or pits, the need for maintenance; four-pole leakage circuit breaker must be connected to the zero line, so that the electronic circuit work ;
3. in the leakage protector put into operation, after each period of time, the user should check the circuit breaker through the test button is normal operation; circuit breaker leakage, overload, short circuit protection characteristics are set by the manufacturer, not free to adjust, So as not to affect performance;
4. the role of the test button is the circuit breaker in the new installation or operation for a certain period of time, in the state of closing the state of its operation to check. Press the test button, the circuit breaker can be broken, indicating that the normal operation can continue to use; such as circuit breakers can not be broken, indicating the circuit breaker or line fault, need to be overhaul;
5. the circuit breaker due to the protection circuit failure and breaking, the operating handle in the trip position. To identify the reasons after troubleshooting, you should first pull down the operating handle, so that the operating mechanism "re-deduction" before the closing operation;
6. the leakage circuit breaker load wiring must go through the load side of the DC mini circuit breaker, do not allow any phase load or zero line without leakage circuit breaker, otherwise it will produce artificial "leakage" caused by the circuit breaker without the gate, resulting in "Malfunctioning".
In addition, in order to more effectively protect the lines and equipment, can be used in conjunction with the fuse circuit breaker.