This device is indoor metal armored withdrawable switchgear (hereinafter referred to as switchgear), which is a complete power distribution device of 312 kV three-phase AC 50Hz single bus and single bus section system. It is mainly used in power plants, small and medium-sized generators, industrial and mining enterprises and secondary substation power distribution and electrical system power transmission and large high-voltage motor starting. For control, protection and monitoring purposes, this switchgear meets the requirements of DL,T404 -91, IEC298Gb3906 and other standards. It has the interlocking functions of preventing load push-pull circuit breaker handcart, preventing false opening and closing of circuit breaker, preventing closing of circuit breaker when grounding switch is in closed position, preventing false entry into live compartment, and preventing false closing of grounding switch when charged. VSI vacuum circuit breaker can be used. In order to be equipped with ABB VD4 vacuum circuit breaker, can also be equipped with domestic ZN63 vacuum circuit breaker is a kind of superior performance of power distribution device.

Product structure characteristics

All metal assembly, modular assembly structure.

The cabinet body is made of imported aluminum-zinc coated steel sheet. It is processed by FMS flexible processing system and adopts excellent multiple folding process. High-strength bolt connection with pull rivet nuts, high precision, corrosion resistance, light weight, high strength, and strong versatility.

Can be equipped with ZN63A-12(VSI) series or imported VD4 series vacuum circuit breaker, wide applicability, high reliability, maintenance-free.

The handcart shall be equipped with working and test positions, and each position shall be equipped with positioning and display devices. Safe and reliable.

The same specifications of the car can be freely interchangeable, strong interchangeability.

The handcart is transported by a special carrier, which is easy and flexible to operate.

The cable chamber can install up to 9 single-core cables.

Reliable mechanical and electrical interlocking device, safe to meet the "five prevention" requirements.

The high pressure chamber has a pressure relief channel to ensure personal safety.

The face door is equipped with an observation window to observe the working state of the indoor components.

Use of environmental conditions

Ambient air temperature: upper limit. 40 ℃, lower limit -10 ℃

Altitude: below 1000m

Relative environmental humidity: daily average relative humidity is not more than 95%, monthly average relative humidity is not more than 90%

Earthquake: intensity not exceeding 8 degrees

The surrounding air should not be obviously polluted by corrosive or combustible gas, water vapor, etc.

No serious pollution and frequent violent vibration. Tightness design under severe conditions meets Class 1 design

Special working conditions

When used under normal environmental conditions exceeding those specified in GB3906, it is negotiated between the user and the manufacturer.

Model and meaning

Schematic diagram of structure

A: Busbar room

B: Circuit breaker handcart room

C: Cable room

D: relay instrument room

1. Pressure relief device

2. Shell

3. Branch bus

4. Busbar bushing

5. Main bus

6. Static contact device

7. Static contact box

8. Current transformer

9. Switch

10. Cable

11. Lightning arrester

12. Grounding bus

13. Loading and unloading partition

14. Bulkhead (Valve)

15. Secondary plug

16. Circuit breaker handcart

17. Heating dehumidifier

18. Dravable partition

19. Earthing switch operating mechanism

20. Control small trunking

21. Base plate

* Rated current greater than 1600A is 1000(mm), and the rest is 800(mm)

* Cable inlet and outlet line is 150(mm) overhead inlet and outlet line is 1660(mm)

Technical parameters