| Customization: | Available |
|---|---|
| Certification: | CCC, ISO9001 |
| Shell Material: | Steel Plate |
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KYN28A-12 indoor metal clad movable switchgear is a complete power distribution device for 3.6kV~12KV,3 phase AC 50/60Hz,single bus sectionalized system.It is mainly used for power transmissionof middle/smallgenerators in power plants,powerreceiving,transmission for substations in power distribution and power system of factories,mines and enterprises etc.so as tocontrol,protectand monitor the system.
| No. | Item | Unit | Data | ||
| 1 | Rated voltage | kV | 3.6, 7.2, 12 | ||
| 2 | Rated frequency of circuit breaker | Hz | 50 | ||
| 3 | Rated current of circuit breaker | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 | ||
| 4 | Rated current of switchgear | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 | ||
| 5 | Rated short-time withstand current (4s) | kA | 16, 20, 25, 31.5, 40, 50 | ||
| 6 | Rated withstands current (peak) | kA | 40, 50, 63, 80, 100, 25 | ||
| 7 | Rated short-circuit breaking current | kA | 16, 20, 25, 31.5, 40, 50 | ||
| 8 | Rated short-circuit closing current (peak) | kA | 40, 50, 63, 80, 100, 25 | ||
| 9 | Rated insulation level |
1 min power frequency withstands voltage | between poles, pole to earth | kV | 24, 32, 42 |
| between open contacts | kV | 24, 32, 48 | |||
| Lightening impulse withstands voltage (peak) |
between poles, pole to earth | kV | 40, 60, 75 | ||
| between open contacts | kV | 46, 70, 85 | |||
| 10 | Protection level | Shell: IP4X; IP2X when the CPT and CB doors are open | |||
Note:
1. The short circuit capacity of the current transformer should be separately considered.
2. See technical parameters of ZN63A-12 in related catalogues of our company.
| Item | Unit | Value | ||||
| Contact distance | mm | 12 | ||||
| Contact travel | 75 | |||||
| Average closing speed (6mm~contact closed) | m/s | 42 | ||||
| Average opening speed (contact separation -6mm) | 20 | 25 | 31.5 | 40 | ||
| Opening time (rated voltage) | m/s | 630 | 630, 1250, 1600, 2000, 2500, 3150 |
1250, 1600, 2000, 2500, 3150, 4000 |
||
| Closing time (rated voltage) | 1250 | |||||
| Contact closing bounce time | m/s | 20 | 25 | 31.5 | 40 | |
| Three phase opening asynchrony | 63 | 80 | 100 | |||
| Allowable cumulative thickness of wear for moving and stationary contacts | mm | 50 | 63 | 80 | 100 | |
| Rated short-circuit breaking current breaking times | Times | 80 | 50 | 30 | ||
| Secondary circuit power frequency withstand current | V | 2000 | ||||
| Rated operating sequence | Opening -0.3s - closing and opening -180s - closing and opening -180s - closing and opening -180s - closing and opening (40kA |
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| Rated thermal stability time | S | 4 | ||||
| Rated single/back to back capacitor bank breaking current | A | 630/400 | 800/400 | |||
| Mechanical life | Times | 20000 | 10000 | |||
Model meaning
Operating conditions
1. Ambient air temperature: -15ºC ~+40ºC .
2. Altitude: ≤1000m.
3. Relative humidity : Daily average≤95%, daily averange of vapour pressure≤2.2kpa.
4. Earthquake intensity: ≤magnitude 8.
5. Applicable in the places without corrosive and flammable gas and water vapor.
6. Used in place without frequently intense vibrant.
Note: Customized products are available.
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