Product Overview
KYN28‑12 type indoor AC metal‑armored mid‑mounted switchgear. It is applicable to the rated voltage of three‑phase AC 12kV, rated frequency 50Hz power system, used for receiving and distributing electrical energy and controlling and protecting circuits And monitoring.
Enforce standards
◆Complies with the standard :GB3906‑2006 " 3.6~ 40.5kV AC Metal‑enclosed Switchgear and Controlgear"
◆GB11022‑8 "General Technical Conditions for High‑Voltage Switchgear"
◆IEC298(1990) "Rated Voltage: 1kV above 50kVAc Metal‑enclosed switchgear and Controlgear
◆DL404‑97 "Technical Conditions for Ordering Indoor AC High Voltage Switchgear"
Usage environmental conditions
◆Ambient air temperature: Maximum temperature 40°C, minimum temperature -15°C.
◆Relative humidity: Daily average shall not exceed 95%, daily average water vapor pressure shall not exceed 2.2Kpa, and the monthly average shall not be greater than 90%. The average water vapor pressure does not exceed 1.8Kpa.
◆Altitude :1000m and below.
◆Earthquake intensity: No more than 8 degrees.
◆The surrounding air should be free from corrosive or flammable gases and water vapor, such as obvious pollution.
◆There are no places with frequent and severe vibrations.
◆Under normal environmental conditions exceeding those stipulated in GB3906, the applicable conditions shall be negotiated between the user and our company.
SPECIFICATION
| Parameter | Specification |
| Rated Voltage | 3.6 / 7.2 / 12 kV |
| Rated Frequency | 50 Hz |
| Rated Current | 630–3150 A |
| Rated Short-Time Withstand Current | 16–50 kA (4 s) |
| Rated Short-Circuit Breaking Current | 16–50 kA |
| Rated Peak Withstand Current | 40–125 kA |
| Protection Degree | IP4X (Enclosure), IP2X (Open Compartments) |
| Applicable Standards | GB3906, GB11022, IEC298, DL404 |
Schematic diagram of the switchgear mechanism:
A, busbar room
B. Circuit breaker trolley room
C.Cable room
D. Relay instrument
1. Pressure relief device
2. loading and unloading baffle
3. baffle (valve)
4. Secondary plug
5.Circuit breaker trolley
6. Heating device
7. can be extracted horizontal baffle
8.Grounding switch operating mechanism
9.Control the guide groove
10.baseplate
11.Grounding bus
12.Lightning arrester
13.Cable
14. Grounding switch
15. Current transformer
16. Contact box
17. Static contact device
18. Main busbar
19. Bus bushing
20. Branch bus
21. shell
Appearance dimensions:
| Height B | 2300 | |
| Width A | The rated current of the branch busbar reaches 1250A, and the thermal stability current is 40kA | 800 |
| The rated current of the branch busbar exceeds 1600A or more | 1000 | |
| Depth C | Cable inlet and outlet busbar | 1500 |
| Overhead line entry and exit | 1660 |
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