The World Form Electrical Panels

1. Form electrical cabinet concept to regulate the separation between the 3 major components of low-voltage electrical cabinets (IEC 61 439)

A: Switching Equipment
B: the main bar
C: The connection point of the device

2. Based on the separation of three main components, electrical cabinets divided into 7 types of forms, including Form 1, Form 2a, 2b Form, Form 3a, 3b Form, Form 4a and 4b Form.

3. The function of the electric cabinet Form

Safety functions for operators and property
- Level higher form electrical cabinet level greater safety;
- Protect the absolute safety of the operators before electric arc discharge;
- Better protection of the damage of the equipment in the cabinet and the cabinet external device before the fire risk.
Functions ensure continuity in the operation
Form cabinet level higher flexibility in the process of replacement and repair as quickly.

Form 4.Cau architecture of electrical cabinets

* Enclosure Form 1
A: Switching Equipment
B: the main bar
C: The connection point of the device
D: Enclosures

- Enclosure Form 1 no partitions between switchgear with main busbar layout and connection points of the device - no partitions in the refrigerator compartment;
- Form 1 Enclosure rarely used because there is safety for the operator and the risks device when the incident occurred.
* Enclosure 2a Form

E: partition bulkhead protects

The partition function blocks are individually protected by the wall separating the main busbar and the connection point of the device.

* Enclosure Form 2b

- The function blocks together with the connection point of the device is protected private partition by partition with main busbar;
- Enclosure Form 2b is used more for power distribution cabinets floor.

* Enclosure Form 3a

- Each partition function blocks are individually protected by partitions with main busbar and the connection point of the device.

* Enclosure Form 3b

- Each partition function blocks are individually protected by partitions with main busbar and the connection point of the device;
- The connection point of the device is also protected private partition by partition with main busbar;
- Currently Form 3b cabinets are used extensively in electrical cabinets overall design for the building, industrial

* Form 4a Switchboards

Each functional block with the connection point of the device is protected private partition bulkhead with staging by the main bar.

* Enclosure Form 4b

- Each partition function blocks are individually protected by partitions with main busbar and the connection point of the device;
- The connection point of the device is also protected private partition by partition with the main bar and function blocks;
- Form 4b cabinets typically used more for heavy industrial projects such as power plants, factories hired minerals, cement and petrochemical ....
- To ensure the safety of the operators, the equipment in cabinets and cupboards around the fire risk occurs;

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