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KYN28A-12
Terms of Use
Environmental temperature: maximum temperature +40°C, minimum temperature -15°C (under special processes, it can reach -45°C); environmental humidity: daily average <95%, monthly average ≤90%;
Altitude: below 1000m;
Seismic resistance: The seismic intensity shall not exceed Magnitude 8;
The surrounding air should be free from obvious pollutants such as corrosive or flammable gases, water vapor, etc;
In the absence of severe contamination and frequent violent vibrations, the severity design under harsh conditions meets the requirements of Class 1;
When used under normal environmental conditions beyond the specifications of GB3906, it shall be negotiated between the user and the manufacturer.
Note: 1. When the relative humidity is greater than 70%, the electric heater should be connected. 2. For locations with an altitude exceeding 1000m, follow the provisions of JB/Z102-71.
Technical parameters of switchgear
| Item | Unit | Parameter | |||
| rated voltage | KV | 3.6，7.2，12 | |||
| rated frequency | Hz | 50 | |||
| Rated current of circuit breaker | A | 630、1250、1600、2000、2500、3150 | |||
| Rated current of switch cabinet | A | 630、1250、1600、2000、2500、3150 | |||
| Rated dynamic stability current（4s） | kA | 16、20、25、31.5、40、50 | |||
| Rated steady current (peak value) | kA | 40、50、63、80、100、125 | |||
| 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、125 | |||
| Rated insulation level | 1min Power frequency withstand voltage | kV | 24 | 32 | 42 |
| Lightning impulse withstand voltage | 40 | 60 | 75 | ||
| Protection level | The enclosure meets IP4X standards, while the isolation room and circuit breaker chamber meet IP2X standards when the doors are open | ||||
