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prefabricated substations

1. product introduction
yb □ 22-12 / 0.4 series prefabricated substation is a product designed according to the technical requirements and operation habits at home and abroad and fully considering the characteristics of domestic power grid and environment. this product conforms to the national standard gb17467-1998 high voltage / low voltage prefabricated substation, and has passed all type tests.
this series of products are used in the three-phase ac system with rated frequency of 50hz and rated voltage of 12kv and below, and the public distribution network with capacity of 2500kva and below requiring ring network and terminal power supply. it can be widely used in outdoor and public accessible places. such as residential areas, factories and mining enterprises, large construction sites, high-rise buildings, airport terminals, street light control systems and other occasions. it can be used not only as permanent power supply, but also as construction power supply. at the same time, it can also be used for photovoltaic power generation booster station and wind power generation booster station as required.

2. product features
◆ the shell of box transformer has a variety of materials and protection levels, which can adapt to different electrical environment. the shell material can be glass fiber cement shell, sandwich panel shell, steel plate shell, stainless steel shell and container shell, with the protection level up to ip55.
◆ high voltage room, low voltage room and transformer room can have multiple layout types according to the scheme, with complete functions and compact structure.
◆ the high-voltage cabinet can be ordinary air insulated cabinet, sf6 gas insulated cabinet or kyn28 central cabinet and other cabinet types, and the low-voltage cabinet can be ggd, gck, mns and other cabinet types, with a variety of combined design schemes to meet various needs.
◆ safe and reliable protection of personal safety
◆ the performance of all electrical equipment components in the box transformer shall meet the corresponding standard requirements, and the five prevention requirements shall be realized reliably. the box adopts anti-theft structure.
◆ easy to operate and install, complete set of products, easy to install and operate.

3. main technical parameters

item

unit

high-voltage switch device

power transformer

low-voltage switch device

 

rated working voltage ue

kv

12

10/0.4

0.4/0.23

 

rated insulation level 1min power frequency withstand voltage

kv

phase to ground and phase to phase: 42

isolating distance: 48


35

2.5

 

rated insulation level lightning shock resistance

kv

phase to ground and phase to phase: 42

isolating distance: 48


75

 

 

rated frequency

hz

50

 

rated capacity

kva

 

50-1250

 

 

rated current

a

depend on parameter of main component

depend on parameter of transformer

2000

 

rated short circuit breaking current

ka

 

 

15,30,50

 

rated short circuit closing current

ka

 

 

30,63,105

 

rated short-term withstand current

ka

 

 

15,30,50

 

rated peak withstand current

ka

 

 

30,63,105

 

time of rated short-term withstand current

s

 

 

2

 

 

 

ip34 for casing; ip2x between high-voltage chamber, transformer chamber and low-voltage chamber

 

noise

db

 

dry-type≤55

oil type≤65

 

 

4. overall dimensions

n/a


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