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YB27
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YB27  Prefabricated Substation (American style)




1.General Description:

YB27 series substation is American type combined substation with function of high voltage control, protect, power transformation and distribution. Usually used in urban and rural power distribution system .The high voltage load switch and high voltage fuse of this product are installed in the oil of the transformer, with the two structure: in same case with the transformer and in different case with transformer. It can be used in high-rise buildings, building in urban and rural areas, residential communities ,high-tech development areas, small and medium size factories, mining areas, oil fields, temporary construction sites, and other premises.

2.Working Conditions

1.Ambient air temperature: -30°C~+40°C
2.Altitude: ≤1000m
3.Wind speed:34m/s ≤700pa
4.Relative humidity: Daily average relative humidity≤95%.
                                   Monthly average relative humidity≤95%.
5.Installation inclination:≤grade 8 .
6.Applicable in the places without corrosive and flammable gas.

 

Note: Customized products are available.

 

 

 

3.Technical data

Transformer

No.

Rated voltage

Rated capacity

No-load current % S9、S10/S11

1

6,6.3,10

30~1600

0.5~2.2

 

Current transformer

Type

Rated primary current

Rated secondary current

Accuracy class

No less than 10 times

Secondary Load

LCZ-35Q

40~500

1000~2000

0.5/10P10

10

50

LZJC-10

100~1000

1000~2000

0.5/10P10



 

Load switch

Item

Unit

Data

Rated voltage

kV

12

 Power frequency withstand   voltage/1min(effective value)

kV

42

Peak lighting impulse   withstand voltage

kV

75

Rated frequency

Hz

50

Rated current

A

315

630

Rated short circuit breaking   current

kA

12.5

16

Rated withstand current(peak)

kA

31.5

40

Rated short time withstand   current

kA

12.5

16

Rated short circuit sustained   current

s

4

Rated short circuit making   current

kA

31.5、40

Mechanical life

Time

2000


4.Overall drawing







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