KYN28-12 Armored Remove AC Metal-Enclosed Switchgear
KYN28A-12 armored removable metal-enclosed switchgear is suitable for 3.6-12kv three-phase Ac 50Hz power grids for receivingand distributing electrical energy, and for controlling, monitoring and protecting circuits., Can be used for single bus, single bus segmented system or double bus system. The switchgear complies with lEC298 “AC metal-enclosed switchgear and controequipment with a rated voltage from lkv to 52kv and below”, lEc694 “High Voltage switch and control Equipment sharing Terms”China’s GB3906 (3-35kv AC metalenclosed switchgear) and DlA04 “indoor Ordering conditions for Ac high-voltage switchgear “Germ an DIN.vDE0670” AC switching eguipment with a rated voltage above lky “and other standards. It also has perfect and reliable anti-misoperation functions.
Type designation
| MODEL: KYN 28 – 12/ □ □ □ □ | |
| K | Armored removable metal-enclosed switchgear |
| Y | Removable |
| N | Conditions of use:(indoor) |
| 28 | Design Number |
| 12 | Rated voltage (kv) |
| □ | 0ne-time plan number |
| □ | Operating mechanism characteristic code, D: electromagnetic; T spring |
| □ | Rated current(A) |
| □ | Rated short-circuit breakingcurrent (kA) |
Environmental conditions
● Ambient air temperature: maximum temperature 40 ℃, minimum temperature – 15 ℃;
● Relative humidity: the daily average value is not more than 95%, the daily average water vapor pressure is not more than 2.2KPa, the monthly average value is not more than 90%, and the monthly average water vapor pressure is not more than 1.8KPa;
● Altitude: 1000m and below;
● Seismic intensity: no more than 8 degrees;
● The surrounding air shall not be obviously polluted by corrosive or combustible gas, water vapor, etc;
● Places without frequent violent vibration;
● In case of use under normal environmental conditions beyond those specified in GB3906, the user and the manufacturer shall negotiate.
Switch cabinet dimensions
| A. Busbar compartment | 9.Removable partition |
| B. Circuit breaker compartment | 10. Secondary plug |
| C. Cable compartment | 11. Auxiliary switch |
| D. Meter compartment | 12. Moving curtain |
| 1.shell | 13. Withdrawable handcart |
| 1.1 Pressure release plate | 14. Grounding knife operating mechanism |
| 1.2 Control cable cover | 15. Cable Seal Terminal |
| 2.Branch bus | 16. Base plate |
| 3. Bus | 17. Lead screw mechanism |
| 4. Static contact device | 18. Grounded main bus |
| 5. Spring contacts | 19. Attachable horizontal partition |
| 6. Grounding knife | |
| 7. Current transformer | |
| 8. Voltage transformer |
Main technical parameter
| Brand | ZHENGXI | |
| Model | KYN | |
| Rated Voltage | 24KV | |
| Rated Frequency | 50Hz | |
| Breaker Rated Current | 630A 1250A 1600A 2000A 2500A 3150A | |
| Switchgear Rated Current | 630A 1250A 1600A 2000A 2500A 3150A | |
| Rated Short-Time Withstand Current (4S) | 16KA 20KA 25KA 31.5KA 40KA 50KA | |
| Rated Peak Withstand Current (Peak) | 40KA 50KA 63KA 80KA 100KA 125KA | |
| High Voltage Backup Fuse Breaking Current | 16KA 20KA 25KA 31.5KA 40KA 50KA | |
| Rated Short-Circuit Closing Current (Peak) | 40KA 50KA 63KA 80KA 100KA 125KA | |
| Rated Insulation Level | 1Min Powerfrequencywithstandvoltage | 24KV 32KV42KV |
| Lightningimpulsewithstandvoltage | 40KV 60KV75KV | |
| Protection Leve | Enclosureis lP4X,isolation room, breaker room door is IP2X | |
Note: Short circuit capacity of current transformer is considered separately
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