Auto matic capacitor switchgear CKG7.2 indoor high voltage vacuum contactor 7.2kv
CKG7.2 series vacuum circuit breaker is a kind of 12kv,50Hz three phase current high voltage indoor switch device. It sticks to the stander of GB1984-89.It can be mounted together with the operating structure as a whole and also can be separated.
ZN28-12(integrated structure) and ZN28A(segregated structure) can be applied to various kinds of fixed switchgear, such as GG-1A(Z),XGN2-12A(Z).This product can matches to CD17 direct current electromagnetic operating structure and CT17,CT19 spring operating structure.
Ambient condition
1 Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)
2 Altitude: ≤1000m
3 Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%, daily average saturated vapor pressure ≤2.2*10-3 MPa,monthly average value ≤1.8*10-3 MPa
4 Earthquake intensity: ≤8 degree
5 The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
Order instruction
Complete model and order quantity of the product
Rated current and rated voltage
Rated short circuit breaking current, operation voltage
Required accessory and quantity
Other requirement please contact with us directly
Mechanical Data
No.
Item
Unit
Value
1
Rated voltage
KV
24
2
Rated lighting impulse withstand voltage
KV
Inter phase or to ground 75,fructure 80
3
Rated short-time power frequency withstand voltage
KV
Inter phase or to ground 42,fructure 48
4
Rated short-circuit breaking current
KA
20
25
31.5
40
5
Rated current
A
630/1250
630/1250
630/1250/1600/2000
1250/2000/3150/4000
6
Rated thermo stability current(valid)
KA
20
25
31.5
40
7
Rated dynamic stability current(peak)
KA
50
63
80
100
8
Rated short-circuit making current(peak)
KA
50
63
80
100
9
Rated operations of short-circuit breaking current interruption
Times
30(40kA is 20 times)
10
Power frequency withstand voltage of secondary circuit(1 min)
