TJC-7.2-630
1. Brief introduction
The interrupter adoption porcelain and ceramics makes to insulate the outer shell.
Contact is WCCu metal alloy material advanced technique of adoption Including bulk small. Breaking the abiliting strong the life span is long maintenance is simple .no explosion dangerous no
contaminate and the noise is low . The pack vacuum contactor can operate the ebery kind of electric appliances equipments, and fuse match f-c cabinet
2. Vacuum Tube main technique parameter
No.
Parameter name
Unit
Value
1
Rated voltage
kV
7.2
2
Rated current
A
630
3
Rated frequency
Hz
50
4
Rated making current
kA
6.3
5
Rated breaking current
kA
5.04
6
Limiting breaking current
kA
6.3
7
Rated short-time withstand current
kA
6.3
8
Rated short-time withstand voltage
kV
32
9
Rated lighting impulse voltage
kV
60
10
Circuit resistance at lowest rated contacts force
μΩ
≤80
11
Electrical life
Times
250000
12
Mechanical life
times
500000
13
Closing force due to bellows and atmosphere
N
70±20
14
Force required to hold contacts open at full stroke
N
100±30
15
Limiting abrasion of contacts
mm
3
16
Internal gas pressure
Pa
≤1.33×10-3
17
Storage life
years
20
