BXMD series of explosion-proof lighting power distribution box
To use the statement
1, use, working conditions
1.1 purpose
BXMD series explosion-proof lighting power distribution box ( hereinafter referred to as the distribution box ), applicable to the II class B or class C, group T1-T4, group level below the environment containing explosive gases in dangerous places, 1 District 2 District, for the exchange of 50Hz, rated voltage 220, 380V or 660V line, is used for the control of three-phase asynchronous motor starting, stopping, and can also be used for the remote control motors, with overload, short circuit protection function.
In 2, working conditions
A. elevation not exceeding 2000m;
B. surrounding air temperature is not higher than +40 ℃, not lower than -5 ℃, 24 hours average value is not more than +35 ℃;
C. around the air relative humidity of not more than 95% ( +25 ℃);
D. in no damage to the insulation of gas or vapor environment;
The pollution of E. rating: 3;
Installation of F. class: II, III;
G. used for outdoor distribution box, the solar maximum radiation 1120W\/ ㎡, rainfall intensity 6mm\/min;
H. No significant shake and severe shock and vibration;
2, structure and characteristics
The distribution box is in accordance with the GB3836.1-2010 " electrical apparatus for explosive gas atmospheres -- Part 1: General requirements ", GB3836.2-2010 " electrical apparatus for explosive gas atmospheres -- Part second: Flameproof Enclosure" d ", " GB3836.3-2010 " electrical apparatus for explosive gas atmospheres -- Part third: increased safety" e " " design and manufacturing standards, designated by the national testing authority inspection of qualified, and presented the explosion-proof certificate.
A, shell made of aluminum alloy die-casting molding, spray the surface. The main cavity with explosion-proof type structure, the wiring cavity safety-increased structure. In optional loading circuit breaker, AC contactor, thermal relay, Ex explosion-proof control button, Ex explosion-proof signal lamp. Distribution box adopts the modular design, all kinds of circuit can be freely combined, electrical components selection by the user to set, which has the advantages of compact structure, beautiful appearance. import line using the cable wiring, directions of inlet and outlet by the user requirements.
B, non-standard electrical box shell is made of welded steel plate: forming, surface spray. The main cavity and the wiring cavity, adopt flameproof structure, inner optional high off the circuit breaker, AC contactor, thermal relay, a control button, signal lights and other elements, through the operation of the shell cover of handle to realize the on-off action, reliable performance, and is provided with a separate display signal lamp. import line using the cable wiring, directions of inlet and outlet and internal components can be determined by user requirements.
In 3, the main technical parameters
|
Type number |
Rated voltage ( V ) |
Rated current of main circuit ( A ) |
Branch number
|
Branch rated current ( A ) |
Explosion proof mark |
|
BXMD□-4 BXMD□-6 BXMD□-8 BXMD□-10 BXMD□-12 BXMD□-4K
BXMD□-6K BXMD□-10K BXMD□-12K |
220 380 660 |
16-630 |
4 6 8 10 12 8 6 8 10 12 |
2．5-100 |
ExdeIIBT4 ExdeIICT4 ExdIIBT4 |
4, schematic appearance: case of:
Assembly mode according to the user request, according to users of the circuit diagram design.