Ningbo Tianan (Group) Co.,Ltd.
Ningbo Tianan (Group) Co.,Ltd
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Power Distribution Cabinet Metal-clad Switchgear with Vacuum circuit breaker
Overview
KYN28-12 Distribution Cabinet is designed by integrating strong points of domestic and foreign similar products, suitable for systems with AC 50HZ and 12kV of rated working voltage ,satisfying demands of power supply, distribution and motor control.
Working conditions:
1. Environmental temperature: - 15 C~ + 40C
2. Altitude: ≤1000m
3. Relative humidity: Daily average ≤95%, the water vapor pressure on daily average≤ 2.2kpa;
Monthly average ≤90% , the water vapor pressure on monthly averages≤ 1.8kpa
4. Earthquake intensity: ≤ magnitude 8
5. Installation conditions: free of explosive and corrosive gas, no severe vibration and shock
Specifications
| Item | Unit | Data | |||
| Rated voltage | kv | 3.6, 7.2, 12KV | |||
| Rated frequency | hz | 50 | |||
| Rated current of circuit breaker | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 | |||
| Rated current of switchgear | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 | |||
| Rated short-time withstands current(4s) | ka | 16, 20, 25, 31.5, 40, 50 | |||
| Rated peak withstands current (peak value) | ka | 40, 50, 63, 80, 100, 25 | |||
| Rated short-circuit breaking current | ka | 16, 20, 25, 31.5, 40, 50 | |||
| rated short-circuit making current (peak value) | ka | 40, 50, 63, 80, 100, 25 | |||
| Rated insulation level | 1min power frequency withstands voltage | pole to pole, pole to ground | kv | 24, 32, 42 | |
| fracture to fracture | kv | 24, 32, 48 | |||
| lightning withstands voltage(peak) | pole to pole, pole to ground | kv | 40, 60, 75 | ||
| fracture to fracture | kv | 46, 70, 85 | |||
| Protection degree | Enclosure is IP4X. IP2X when CPT and CB door are open | ||||
| Note: 1. The short-circuit capacity of current transformer is considered separately. 2. Details of the parameters of ZN 63A-12 as per reference company' s sample. |
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