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Box type substation
Standard Specification

¡¾Summary¡¿
ZBW series outdoor box-type substation is a compact set of distribution equipment which is composed of high-voltage electrical equipment, transformers, low-voltage electrical equipment and so on. It is used in urban high-rise buildings, urban and rural buildings, residential areas, high-tech development zones, small and medium-sized factories, mining oilfields and temporary construction power supply places, as the connection of distribution system.Receive and distribute energy.          
ZBW outdoor box substation has the characteristics of complete set, small size, compact structure, safe and reliable operation, convenient maintenance and movable. Compared with conventional civil substation, box substation with the same capacity usually occupies only 1/1O~1/5 of the area of conventional substation, which greatly reduces the design workload and construction workload. The construction cost has been reduced. In the distribution system, it can be used in ring network distribution system, dual power supply or radiation terminal distribution system. It is a new complete set of equipment for the construction and transformation of urban and rural substations.     
ZBW outdoor box substation conforms to GB/T 17467-1998 "High Voltage/Low Voltage Pre-installed Substation" national standard.  


¡¾Structural characteristics¡¿
1.This product is composed of high-voltage distribution device, transformer and low-voltage distribution device. It is divided into three functional compartments, i.e. high-voltage chamber, transformer chamber and low-voltage chamber. High-voltage and low-voltage chamber have complete functions. High-voltage side primary power supply system can be arranged into ring network power supply, terminal power supply, dual power supply and other power supply modes. Install high-voltage metering elements to meet the needs of high-voltage metering. Transformer room can choose S9, SC and other series of low-loss oil-immersed transformers or dry-type transformers; low-voltage room can adopt panel or cabinet-mounted structure to form the power supply scheme required by users according to user"s requirements. It has many functions such as power distribution, lighting distribution, reactive power compensation, electric energy measurement and electric quantity measurement to meet users" needs. And also to meet users" different requirements. It is also convenient for users to manage and improve the quality of power supply.   
2.The structure of the high-pressure chamber is compact and reasonable, and it has the function of comprehensive anti-misoperation joint pin. Transformers can be equipped with rails to facilitate access from the gates on both sides of the transformer evaluation when required by users. Each room has an automatic lighting device. In addition, all the components used in high and low pressure rooms are reliable in performance, convenient in operation, safe and reliable in operation and convenient in maintenance.
3.Natural ventilation and forced ventilation are adopted. Transformer chamber and high and low voltage chamber have ventilation ducts. Exhaust fan has temperature control device which can start and close automatically according to the set temperature to ensure the normal operation of transformer.  
4. The box structure can prevent rainwater and dirt from entering. The material is made of colored steel plate, which has the function of anti-corrosion and heat insulation. With long-term outdoor use conditions, to ensure anti-corrosion, waterproof, dust-proof performance, long service life, and beautiful appearance.

¡¾Main technical parameters¡¿

 

Project

Unit

ference data

High voltage unit

Rated frequency

Hz

50

Rated voltage

kV

10

Working Maximum  voltage

kV

12

Rated current

kA

630

Transfer current

kA

1750

Handover current

kA

3150

Rated short-time withstand current

kA

20

Rated peak withstand current

kA

50

Power frequency voltage withstand phase to phase/Right ground/Fracture

kV

42/48

Lightning impulse withstand voltage phase to phase/Right ground/Fracture

kV

75/85

 

Rated short-circuit breaking current£¨Current limiting fuse£©

 

kA

 

31.5

Transformer unit

Capacity of Break off No load transformer

kVA

2500

Rated voltage

kV

20

Rated capacity

kVA

30~2500

Tap range

%

¡À2¡Á2.5%¡¢¡À5%

link-up group

 

Yyn0¡¢Dyn11

Impedance voltage

V

4.5

Low voltage unit

Rated voltage

V

220¡¢380

Rated current of main circuit

A

50~4000

Branch current

A

5~800

Rated short-time withstand current of main circuit

kA

50

Rated peak withstand current of main circuit

kA

63

Shell

Protection level

 

IP33

noise level

dB

¡Ü50

Temperature rise level of shell

K

10K

¡¾Use of environmental conditions¡¿
1.Ambient air temperature Upper limit¡Ü40¡æ lower limit¡Ý-10¡æ
2. Solar radiation¡Ü1000W/m2
3.altitude¡Ü1000m
4.Icing¡Ü20m m
5.wind speed¡Ü35m/s
6.humidity Daily average relative humidity ¡Ü95%
Monthly average relative humidity ¡Ü90%
Daily average relative vapor pressure ¡Ü2.2kPa
Monthly average relative vapor pressure ¡Ü1.8kPa
7. earthquake¡Ü8¡ã
8.No fire, explosion danger, serious pollution, chemical corrosion and violent vibration place.
notes£ºSpecial conditions of use, when ordering, to negotiate with the company to resolve

¡¾Box type substation £¨ZBW£© ¡¿


 

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