Audited Supplier
ZW20-12/T630-25
High Voltage Circuit Breakers
Electric Type
Normal Type Circuit Breaker
SF6
Fixed
Box Type Sealing Structure
3
Circuit Breaker
Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB
ISO9001-2000, CE, CCC
Ampower
Export Standard Wooden Case
1350*950*900
China
Product Description
1.Overview
ZW20-/630-20 series outdoor vacuum circuit breaker is the use of vacuum extinction chamber to quench the arc, with SF6 gas as the insulating medium. Rated voltage 12kV, 15kV, 24kV, three-phase AC 50/60Hz outdoor power distribution equipment. It is mainly used to break and close the load current, overload current and short circuit current in the power grid. It can directly cut out the fault main line and large branch links, with reclosing function. The switch body, the control unit and the voltage transformer are connected by military-grade aviation connectors through outdoor fully insulated cables.
It is suitable for substations, industrial and mining enterprises, rural power grid distribution system for protection and control and frequent operation of the site. The product is compatible with the controller and can meet the requirements of the distribution automation system.
2. Environmental conditions for use
a . Altitude: no more than 2,000m; Pollution class: Grade IV.
b . Ambient air temperature: -40°C~+40°C; Daily temperature difference: Diurnal variation 25°C.
c . The wind speed shall not be greater than 35m/s; The earthquake was no more than a magnitude 8.
d. No inflammable, explosive danger, chemical corrosion place.
When the conditions of use exceed the above scope, the permissible scope and technical measures shall be determined through consultation with the supplier.
3 Product model and definition
4.Main technical parameters
5.Mechanical characteristic parameters
ZW20-/630-20 series outdoor vacuum circuit breaker is the use of vacuum extinction chamber to quench the arc, with SF6 gas as the insulating medium. Rated voltage 12kV, 15kV, 24kV, three-phase AC 50/60Hz outdoor power distribution equipment. It is mainly used to break and close the load current, overload current and short circuit current in the power grid. It can directly cut out the fault main line and large branch links, with reclosing function. The switch body, the control unit and the voltage transformer are connected by military-grade aviation connectors through outdoor fully insulated cables.
It is suitable for substations, industrial and mining enterprises, rural power grid distribution system for protection and control and frequent operation of the site. The product is compatible with the controller and can meet the requirements of the distribution automation system.
2. Environmental conditions for use
a . Altitude: no more than 2,000m; Pollution class: Grade IV.
b . Ambient air temperature: -40°C~+40°C; Daily temperature difference: Diurnal variation 25°C.
c . The wind speed shall not be greater than 35m/s; The earthquake was no more than a magnitude 8.
d. No inflammable, explosive danger, chemical corrosion place.
When the conditions of use exceed the above scope, the permissible scope and technical measures shall be determined through consultation with the supplier.
3 Product model and definition
4.Main technical parameters
| S/N | Name | Unit | Parameter | ||
| 1 | Rated Voltage | kV | 12 | 15 | 24 |
| 2 | Rated Current | A | 630, 1250 | ||
| 3 | Rated Frequency | Hz | 50/60 | ||
| 4 | Rated short-circuit breaking current (effective value) | kA | 20, 25 | ||
| 5 | Breaking times of rated short-circuit current | Times | 30 | ||
| 6 | Rated peak withstand current (peak) | kA | 50, 63 | ||
| 7 | Rated short-time withstand current (4S) | kA | 20, 25 | ||
| 8 | Rated short-circuit closing current (peak) | kA | 50, 63 | ||
| 9 | 1min power frequency withstand voltage (inter-phase, over the ground/fracture) | kV | 42/48 | 50/55 | 65/79 |
| 10 | Lightning impulse withstand voltage (peak) inter-phase, over the ground/fracture | kV | 75/85 | 88/100 | 125/145 |
| 11 | Mechanical life | Times | 10000 | ||
| 12 | Rated operating sequence | 0-0.3s-C0-180s-CO | |||
| 13 | SF6 rated gas pressure (gauge pressure) | Mpa | 0.045 | ||
| 14 | SF6 annual leakage rate | ≤ | 0.5% | ||
5.Mechanical characteristic parameters
| S/N | Name | Unit | Parameter | ||
| 1 | Rated Voltage | kV | 12 | 15 | 24 |
| 2 | Clearance between open contacts | mm | 9±0.5 | 11±0.5 | 14±0.5 |
| 3 | Over-travel of contact | mm | 3±0.5 | 3±0.5 | 3±0.5 |
| 4 | Average opening speed | m/s | 1.1±0.2 | 1.2±0.2 | 1.4±0.2 |
| 5 | Average closing speed | m/s | 0.6±0.2 | 0.8±0.2 | 1.0±0.2 |
| 6 | Closing contact bounce time | ms | ≤2 | ||
| 7 | Resistance of each phase loop | μΩ | ≤120 with isolating switch≤200 | ||
| 8 | Closing time | ms | 25~60 | ||
| 9 | Opening time | ms | 18~45 | ||
| 10 | Three-phase heterogeneity | mm | ≤2 | ||
| 11 | Inter-phase center distance | mm | 280 | 280 | 340 |
