Active Member
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[China]
Address: N0.506 Huicheng Road, Chengyang District, Qingdao City，China
Contact name:Jack
Qingdao Hengfengyou Electrical Engineering Co., Ltd. |
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ZW20-12 Type Outdoor HV Vacuum Circuit Breaker
General Description
ZW20-12 type outdoor pole- mounted vacuum interrupter to arcing,SF6
as insulating medium.12kv rated voltage and three-phase AC 50 Hz
outdoor distribution equipment and maintly used to switching and
making load current,overcurrent and short circuit current of power
grid.
This type vacuum circuit breaker can be used for protecting,
controlling in the frequent operation places of transformer
substation, industrial and mining enterprises, rural power
distribution system.It's equipped with controller to meet the
requirements of distribution automation system.
Reference standard
GB/T11022-1999 Common technical requirements of high voltage switch
equipment and control equipment
GB311.2-2002 Insulation coordination operation manual of high
voltage power transmission and transformation equipment
GB/T4109-2008Insulation casing of AC Voltage more than 1000v
GB2706 AC High Voltage Electrical Equipment Dynamic and Thermal
Stability Test Method
GB3309-1989 Mechanical Test Of High Voltage Switch Equipment at
Normal Temperature
GB/T 8905-1996 Gas Manage And Testing Manu al Of SF6 Electric
Equipment
GB1206-2006 current Transformer
Applying ambient conditions
a. Altitude above sea level:no more than 2000m:Pollution level:IV
level.
b. Ambient temperature:-40ºC~+40ºC,and average temperature in 24hr
should be no more than 25ºC
c. Wind speed is no more than 35m/s:earthquake intensity:no more
than 8 degrees.
d. It should be installed in the places without
inflammable,explosive,chemical corrosion.
Conditions of Use
Sea level:≤1000m(if increase the altitude, it will improve 12%
every increase 1000m, rated insulator average level increase 12%)；
Ambient air temperature:+40℃,***-35℃；
Wind pressure:not over 700Pa(equals to wind speed 34m/s)；
Amplitude:without frequent convulsion；
Air pollute degree:Ⅲ grades；
Daily different temperature:not over 25℃
Note: Due to continuous product improvement, the dimensions provided in this sample are for reference only. If necessary, our company can design and produce according to user requirements. Please contact the company in time.
| # | Item | Unit | Data |
| 1 | Rated voltage | kV | 12 |
| 2 | Rated frequency | Hz | 50 |
| 3 | Rated current | A | 630,1250 |
| 4 | Rated short circuit breaking current | kA | 12.5,16,20,25 |
| 5 | Rated peak withstand current | kA | 31.5,40,50,63 |
| 6 | Rated short time tolerance current(4s) | kA | 12.5,16,20,25 |
| 7 | Rated short circuit opening and closing current | kA | 31.5,40,50,63 |
| 8 | Institution life | time | 10000 |
| 9 | Rated short open circuit current switch frequency | time | 30 |
| 10 | Rated current open circuit frequency | time | 10000 |
| 11 | Power frequency withstand voltage (1min): phase, ground/fracture | kV | 42/48 |
| 12 | Lightning shock withstand pressure(peak)phase, ground/fracture | kV | 75/85 |
| 13 | Power frequency withstand voltage of the secondary circuit) (1min) | kV | 2 |
| 14 | Net weight | kg | 140 |
·Order instructions:
1. The customer needs provide main parameters of the transformer (input and output voltage, capacity, loss, etc.)
2. Other customer requirements
