Is there a difference between one, two and three level distribution cabinets?

When a local construction site needs electricity, will build temporary substation electrical equipment, and then from all levels of distribution box branches to each electricity site, this is called temporary electricity.

Distribution boxes are divided into three types: first-level distribution boxes, second-level distribution boxes and third-level distribution boxes

Level 1 distribution box: the power distribution cabinet for construction is used for construction on construction site. It is specially designed to meet the construction power specification standards of construction department according to the special conditions of construction site.

The complete set of products can form a complete three-level protection system for construction electricity, and achieve the purpose of one machine, one gate and one protection, which is very suitable for all kinds of standard projects. The first level cabinet adopts the bottom in and the bottom out line, the front door opens, the main bus line adopts the copper row connection, the contact is good, the inner belt metering system, the safety is beautiful, the rain proof box roof is suitable for the field work.

Applicable to construction site construction electricity, is specially designed to meet the construction department's specifications and standards for construction electricity according to the special construction site conditions.

The complete set of products can form a complete three-level protection system for construction electricity, achieving the purpose of one machine, one gate and one protection. The secondary box is designed with inner and outer doors, plastic sprayed on the outside. It is safe and beautiful, and the roof of the rainproof box is suitable for field work.

Note:

The secondary distribution box shall be placed 1.5m above the ground

Main switch a 60 - DZ47-63100 - a

Lighting switch 16A -- dz47-6316a two-phase leakage switch

Air conditioner 1.5p -- 20A -- dz47-6320a two-phase leakage switch

Electric water heater 8000W+ washing machine -- dz47-6360a two-phase leakage switch (because there is no 40A switch, only 32A)

Socket switch 16A -- dz47-63 16A

Main electrical appliances for the refrigerator, induction cooker, microwave oven

Air conditioning switch needs to be replaced, the main switch also needs to be replaced.

The main switch does not need leakage. Branch switch with leakage protection. Because the human body passes through 30mA with lethal danger. The operating current of the leakage switch is 15-30mA

At present the city power distribution line is generally 4 square, some have used 6 square. Replace the 2.5 squared.

Three level distribution: namely, distribution box is set under the general distribution box, switch box is set under the distribution box, and switch box is set under the electrical equipment to form three level distribution.

"Two-level protection" mainly refers to the adoption of leakage protection measures. In addition to installing a leakage protection device in the switch box of the last level, a first-level leakage protection device should also be installed in the distribution box of the upper level or the general distribution box to form a two-level protection on the whole.

"One machine, one brake, one leak, one box, one lock" principle, that is, it is forbidden to directly control two or more electrical equipment (including socket) with the same switch.

conclusion

Abb robot composition

The IRB robot is an abb product of the Swedish machine life manufacturer Ming. The IRB refers to the abb standard series robot. IRB robots are used for welding, painting, handling and cutting.

Common models are: IRB 1400, IRB 2400, IRB 4400, IRB 6400.

The explanation is as follows: IRB refers to the KUKA robot.

The yi digit (1,2,4,6) refers to the size of the robot.

The second digit (4) refers to the system belonging to S4 or S4C.

Whatever the model, the robot controls are basically the same.

IR 1400: small load, large load of zui is 5kg, often used for welding.

IRB 2400: small load, zui large load of 7kg, often used for welding.

IRB 4400: large load, and the large load of zui is 60kg, which is often used for carrying or welding in a large range.

IRB 6400: large load, UI load of 200kg, often used for carrying or large-scale welding.