Air Insulated 24kv Load Break Switch

Source:

Load switch.jpg

I Main technical specification

Table 1 Main technical specification of load switch and earthing switch

S.N.

Name

Unit

Data

1

Rated voltage

kV

24

2

Rated frequency

Hz

50

3

Rated current

A

630

4

Max. rated current of fuse  

A

80

5

Rated active load breaking current, rated closed loop breaking current

A

630

6

Rated short time withstand current (2S)

kA

20

7

Rated short circuit making current, rated peak withstand current

kA

50

8

1min power frequency withstand voltage, between phases and to ground/gap

kV

65/79

9

Lightning impulse withstand voltage (peak) between phases and to ground/gap

kV

125/145

10

rated cable-charging breaking current

A

16

11

Mechanical life

times

2000

12

Rated breaking transfer current

A

1050

13

Rated short circuit breaking current of fuse

kA

31.5

Table 2  Main mechanical characteristics of load switch

S.N.

Name

Unit

Data

Remark

1

Phase distance

mm

300±3


2

Total stroke of conducting rod

mm

290±5


3

Contact clearance of fixed and moved contact at opening position

mm

215


4

Electrical contact overstroke of moved contact rod

mm

42±3


5

Closing speed when first touch

m/s

2.8

+0.7


-0.2

6

Opening speed when first touch

m/s

1.7


7

Non-synchronism of three-phase closing

ms

10


8

Non-synchronism of three-phase opening

ms

5


Table 3  Main mechanical characteristics of earthing switch

S.N.

Name

Unit

Data

Remark

1

Contact clearance of fixed and moved contact at opening position

mm

215


2

Non-synchronism of three-phase closing

ms

10


 

II Structure

Drawing 1  Overall and installation dimension of pneumatic load break

 Overall drawing of 24kV load switch.jpg

Right operation

 


Feedback
Your comments are welcome!
For more information about our brand and products, please feel free to contact us!
Please enter your email address:
Contact Us
Address: No.38, Gaoxin Road, Baoji, Shaanxi, China 721000
Tel: +86 917 3433818
Fax: +86 917 3433818
E-mail: joyelectric@126.com
skype:bjanna981106
Copyright © Shaanxi Joyelectric International Co.,Ltd