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40.5kV ZGS Combined Substation (American)

40.5kV American box transformer is a complete set of electrical equipment produced by Hechong Technology using advanced technology and experience. The transformer, high-voltage load switch, protection fuse, tap changer and other components are sealed in the oil tank and combined with the low-voltage part. The high-voltage part adopts fully insulated, fully shielded and touchable elbow cable joints. The structural layout is reasonable and compact, and the box transformer is arranged in "L" shape or "eye" shape. It has the characteristics of small size, low investment, reliable power supply, reasonable structure, convenient operation, fast installation, and simple maintenance. It is mainly suitable for new energy projects and overseas exports.
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Product Parameters

Performance characteristics

(1) small size, small footprint, easy to place, easy to camouflage, easy to coordinate with the environment of the community.

(2) Shorten the length of the low-voltage cable, reduce line loss, but also reduce the cost of supporting power supply.

(3) fully sealed, fully insulated structure, no insulation distance, reliable to ensure personal safety.

(4) It can be used for ring network and terminal, and the conversion is flexible and convenient, which improves the reliability of power supply.

(5) The high-voltage incoming line adopts fully insulated, fully sealed, fully shielded and touchable elbow cable connector, which is convenient and flexible to operate, can be plugged and unplugged with load, and has the characteristics of isolating switch.

(6) Using double fuse protection to reduce operating costs.

(7) can be selected according to the need of high ignition point oil can be placed in the building.

(8) The box adopts anti-corrosion design and special painting treatment, which can be operated in various harsh environments for a long time, such as storms and high pollution areas.

 

 

 

Technical parameters

Serial Number

Project

Unit

Technical parameters

1

Transformer main body

HV side rated voltage

kV

40.5

LV side rated voltage

kV

0.4/0.69/0.8/1.14

2

Rated capacity

kVA

50~1600

3

Wiring mode

 

D,yn11/Y,yn0

4

Rated frequency

Hz

50

5

No-load tap changer

kV

±2x2.5%

±5%

6

Noise level

dB

Meet the requirements of national standards

7

oil surface temperature rise

K

≤ 53

8

1min power frequency withstand voltage

High pressure side

kV

85

Low pressure side

kV

5

9

Lightning impulse withstand voltage (peak)

full wave

kV

200

chopping wave

kV

220

10

Cooling mode

 

oil-immersed self-cooling

11

HV load switch

Rated voltage

kV

40.5

12

Rated current

A

630

13

Rated short-time withstand current (4S)

kA

25/31.5

14

Rated short-time closing current

kA

63/80

15

Breaking times at full load

Times

100

16

Mechanical life

Times

2000

17

 

Power frequency withstand voltage (phase to ground)

 

95

18

Enclosure protection class

Meet the requirements of national standards

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