HengFengYouZW8-12/630-20 vcb three phase ac 50hz outdoor high
voltage
vacuum circuit breaker
ZW8-12 series of high voltage outdoor switchgear is used in
three-phase AC power
network of AC 50Hz, rated voltage 12KV for breaking and closing the
rural network,
city network and load current ,overload current, short circuit
current for small scale
power system. The overall structure of the product for the
three-phase with whole
box-type, and using the SMC insulation materials , , and it has
reliable performance,
high dielectric strength.
ZW8-12G is consist of ZW8-12 circuit breaker and isolation knife
.and it is called
conbination of circuit breaker.and also can be used segment
switch,The series of
ZW8-12,the mode of operation can be divided into manual and
electric.
parameters
| Item | Description | Unit | Data |
| Item | |Description | |Unit | 6.3KA/12.5KA/20KA |
| Rated voltage | |kv | 12 |
| |2 | Rated current | | 630(1250) |
| Rated short circuit breaking current | KA | 20/25/31.5 |
| Ratedshortcircuitmakingcurrent | | 16/31.5/50 |
| Rated peak withstand current | KA | 16/31..5/50 |
| |4SRatedwithstandcurrent | KA | 6.3/12.5/20 |
| 7 | Ratedinsulationlevel | frequencywithstandvoltage | | 42 |
| Impulsewithstandvoltage | 75 |
| |8 | Ratedoperatingsequence | | 0-0.3s-CO-180S-CO |
| |Mechanicallife | Times | 10000 |
| 10 | lRatedshortcircuitcurrentbreakingtime | Times | 30 |
| 1 | Ratedclosebrakevoltageofoperatingmachnie | | ACDC110,220 |
| 12 | Ratedbreakbrakevoltageofoperatingmachnie | M | ACDC110,220 |
| 13 | Contactstroke | mm | 11+1 |
| 14 | Exceedrange(thecompresslengthofcontactsping) | mm | 3.5+0.5 |
| 15 | Differentperiodofthree-phasebreakandclosebreak | ms | s2 |
| 16 | Thejumptimeofcontactclosebreak | ms | s2 |
| 17 | |Averagebreakspeed | |m/s | 0.9~1.5 |
| 18 | lAverageclosingspeed | |m/s | 0.4~0.8 |
| 19 | Closingtime | | s | 0.1 |
| 20 | Contactslimitersion | mm | 3 |
Application and feature
It is equipped with CT23 type spring energy-stored operating
mechanism. Energy-stored,
opening and closing can be achieved by motor or by manual.
Applying ambient conditions
Ambient temperature: The max, temperature should be+40 degrees. The
mix. temperature
The height above sea level should be no higher han 1000m.
Wind preesure should be on more than 7000Pa it isequivalent to wind
speed of 34m/s
The air filthy should be win in III degree. Frequently violent
vibration should be forbidden.
About us
Qingdao Hengfengyou Electrical Engineering Co. , Ltd. is one of the
large-scale electric complete
sets of manufacturers in China, specializing in oil-immersed
transformers, dry-type transformers,
high-voltage Cabinets, low-voltage cabinets and substation
manufacturing specialized electrical
enterprises. The company is located in the beautiful coastal city
of china-qingdao. The company
has a registered capital of 10 million yuan, 20 senior technical
personnel, more than 500 employees,
and a sound sales and service system, annual output value of US $1
billion, the products sell well
at home and abroad.
