BXK-CVOC/K reciprocating pump explosion-proof switch box Wochuan Intelligent Manufacturing

BXK-CVOC/K reciprocating pump explosion-proof switch box Wochuan Intelligent ManufacturingGeneral Electric Requirements

5.2.1 Rated voltage: 380/220V

5.2.2 Rated frequency: 50 ± 0.5HZ

5.2.3 Number of phases: 3 phases

5.2.4 Wiring method: three-phase four wire system+PE

5.2.6 Grounding method: TN-S system

5.2.7 Requirements for all circuit breakers inside the box:

1) Unless otherwise specified, all packaged and non packaged circuit breakers are selected from ABB, Siemens, or Schneider brands

The components listed in the mandatory certification catalog are provided with CCC certification certificates.

2) All molded case circuit breakers have a short-time withstand current of 35kA (effective value for 1 second).

3) All miniature circuit breakers have a short-time withstand current of 10kA (1s effective value).

4) If the rated current of the circuit breaker is greater than 63A, a molded case circuit breaker shall be used; Small circuit breakers shall be used for circuit breakers of 63A and below;

5) The residual operating current △ In of a circuit breaker with a leakage protector is 30-100mA, and the residual operating time is less than 0.1-0.3s.

6) Surge protection is added to the power supply side of lighting distribution boxes, power distribution boxes, maintenance boxes, circuit breaker boxes, and electromagnetic starter boxes. wave

Surge protectors are all selected from Tianjin Zhongli ECS、 Products from Eaton's N (SP) series or Thunderbolt Power Electronics PB series brands.

Surge protection adopts a second level power lightning arrester, with a lightning current capacity greater than or equal to 40kA (8/20 μ s) and a response time of 8

At 25ns, the rated voltage is 380V, and the maximum continuous operating voltage is 420V.

7) The maintenance power box must be equipped with leakage protection function.

8) Parameters with special requirements shall be determined by the design party.

5.2.8 The incoming and outgoing cables are all armored cables, and the gland heads are sealed with armor.

5.2.9 The interior and interfaces of the box body, as well as the entrances and exits, should be smooth and free of burrs.

5.2.10 In addition to being fixed with screws, the outer shell of the box should be equipped with a foldable opening and closing on one side, and have a switch door handle.

5.2.11 All wiring terminal screws should be made of copper screws with a straight and deepened depth

BXK-CVOC/K reciprocating pump explosion-proof switch box Wochuan Intelligent Manufacturingpower distribution box

1) The overall structure of the power distribution box is a composite type. The outer shell of the box is made of anti-static glass fiber reinforced polymer material (SMC) pressed

Cheng. The device adopts a modular structure, which can be freely combined in various forms, and various circuits can be freely selected.

2) Power distribution boxes are required to have a main switch. High breaking miniature circuit breakers or molded case circuit breakers are used for incoming and branch circuits as needed

Both circuit breakers and circuit breakers should have overload and short-circuit protection functions, and leakage protection functions should be provided as needed according to detailed design requirements.

3) The main circuit power line and branch output terminals are connected with terminal blocks or copper busbars as needed, and have dedicated grounding terminals. all

All wiring terminals should use Phoenix or Weidmuller terminals or equivalent. And have a reserve capacity of no less than 20%.

4) The power distribution box should be equipped with stainless steel labels below the operating handles (panels) of each distribution switch to identify the switch position number

And the device name.

5) All outdoor power distribution boxes are equipped with rainproof facilities, which must be installed in conjunction with the distribution box. The rainproof facilities are three sided

The enclosure and rain cover are made of stainless steel with electrostatic spray coating material. Protection level: ≥ IP65, anti-corrosion level: WF1.