Safety control requirements for plastic meter box:
1. Construction site low-voltage power supply system should be set up the total distribution box, distribution box and switch box, the implementation of three power distribution.
2. The total distribution box should be close to the power supply. The distribution box should be installed in areas where the electrical equipment is relatively concentrated.
3. Construction with electric power distribution and lighting distribution should be set in the box, when placed in the same box, the power and lighting distribution should be set up.
4. Distribution box, switch box should be used steel (thickness of 1.2 ~ 2.0mm) or flame retardant insulation materials.
5. Power distribution box, switch box installed in the power switch, should have a short circuit protection, overload protection, its rating and action settings should be adapted to its load.
6. The total distribution box (distribution box), the switch box must be installed leakage protector, the rated leakage action parameters should be selected to comply with the following provisions:
(1) the total distribution box leakage protection device rated leakage current should be 50 ~ 100mA, rated leakage action time should be greater than 0.1s.
(2) The leakage current of the leakage protection device in the switch box shall not exceed 30mA and the rated leakage action time should be less than 0.1s. When used in the wet place, the rated leakage current should not exceed 15mA, the rated leakage action time should be less than 0.1s.
Safety control requirements for plastic meter box
পাবলিশার্স : TAIXIতারিখ : 2017-07-14দেখেছে : 321
আরও পড়ুন
- Communications industry: optical communications maintain a high level of prosperity
- How should consumers choose small circuit breakers?
- Structural characteristics of load isolation switch
- How to ensure the quality of the electric meter box industry
- What is the difference between disconnectors and isolation switches?
- Isolation requirements for electrical isolation switch
- Working principle of DC circuit breaker
- Development of molded case circuit breakers
- Maintenance and inspection of AC contactor
- Attention should be paid to the installation, application and maintenance of molded case circuit breakers
- How does the overvoltage and undervoltage protection devices work?
- Installation of load isolation switch
- How to deal with abnormal AC contactor
- The comprehensive analysis of benefits of transparent meter box structure materials
- The future development trend of distribution box and distribution cabinet industry