Headquarters Address: No. 285, Jiujiang East Road, Chuzhou City, Anhui Province
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Product Series
PRODUCTS SERIES
KYN28-12 Metal-Clad, Center-Position, Withdrawable Switchgear
Scope of application
The KYN28-12 type (GZS1) indoor metal-clad, center-mounted withdrawable switchgear (hereinafter referred to as the switchgear) is a three-phase, 50 Hz AC indoor complete switchgear assembly designed for receiving and distributing electrical energy in networks ranging from 3 to 12 kV, and for providing control, protection, and monitoring functions for electrical circuits. The relay compartment panel of this product can accommodate various types of microprocessor-based comprehensive relay protection devices, enabling intelligent system control with remote control, remote measurement, remote signaling, and remote adjustment capabilities. The system is controlled via a CAN bus equipped with communication interfaces, allowing it to network field devices. Moreover, the switchgear features “five-protection” functions—namely, preventing accidental operation of circuit breakers, preventing the insertion or withdrawal of hand carts under load, preventing the closing of grounding switches while live, preventing energization of grounding switches when they are in the grounded position, and preventing unauthorized entry into live compartments. This switchgear can be equipped with either VS1 (i.e., ZN63) or ZN12V vacuum circuit breakers, or alternatively, with imported VD4 vacuum circuit breakers paired with VC-series vacuum contactors.
Model and Meaning
Operating environment conditions
● Ambient air temperature: Upper limit +40℃, lower limit -10℃ in most regions;
● Altitude: 1000m;
● Humidity:
Relative humidity: The daily average shall not exceed 95%, and the monthly average shall not exceed 90%.
Water vapor pressure: The daily average shall not exceed 2.2 kPa, and the monthly average shall not exceed 1.8 kPa. Condensation may occur when the temperature drops suddenly, accompanied by contamination. This product is suitable for the following two environmental conditions that are more severe than normal conditions:
(1) Condensation occurs infrequently (averaging no more than twice per month) and exhibits mild contamination.
(2) Condensation generally does not occur (averaging no more than twice per year), but there is relatively severe contamination.
● Locations free from fire hazards, explosion risks, and corrosive gases or other harsh conditions that could severely damage metals and compromise insulation;
● Locations without severe vibrations, bumps, or vertical tilts exceeding 8°;
Note: (1) Storage and transportation are permitted at -30℃;
(2) For areas with an altitude exceeding 1000 m, the provisions of JB/2102 “Technical Requirements for High-Voltage Electrical Equipment Used in Areas at Different Altitudes” shall apply. When the altitude does not exceed 2000 m, no special measures are required for low-voltage auxiliary equipment.
(3) When the actual operating conditions differ from those described above, the user and the manufacturer shall negotiate and reach an agreement.
Switchgear structure
| Figure 1 | Figure 2: Schematic Diagram of Switchgear Structure | ||||
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| A. Circuit Breaker Compartment B. Busbar Compartment C. Cable Room D. Relay Instrument Room 1. Busbar 2. Static contact box |
3. Circuit breaker 4. Grounding switch 5. Current transformer 6. Capacitive Voltage Divider 7. Surge arrester |
1. Shell 2. Branch busbar 3. Busbar bushing 4. Main busbar 5. Static Contact Assembly 6. Static contact box |
7. Current transformer 8. Grounding switch 9. Cable 10. Surge arrester 11. Grounding main busbar 12. Detachable partition |
13. Partition (flap) 14. Secondary plug 15. Circuit breaker handcart 16. Heater device 17. Removable horizontal partition 18. Grounding switch operating mechanism 19. Base plate |
A. Busbar Room B. Circuit Breaker Handcart Compartment C. Cable Room D. Relay Instrument Room 1.1 Pressure relief device 1.2 Control the small cable tray |
Keywords: KYN28-12 Metal-Clad, Center-Position, Withdrawable Switchgear
Service Hotline:
Contact phone number:18755010350
Customer service hotline hours: 08:00-17:00
Service email:944017450@qq.com
Headquarters Address: No. 285, Jiujiang East Road, Chuzhou City, Anhui Province
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