KYN28A‑12/24 Series Armoured Movable AC Metal‑Enclosed Switchgear (hereinafter referred to as switchgear) is a complete set of power distribution equipment for three‑phase AC 50 Hz, 3.6‑40.5 kV sectionalized single‑busbar systems.
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Product OverviewKYN28A‑12/24 Series Armoured Movable AC Metal‑Enclosed Switchgear (hereinafter referred to as switchgear) is a complete set of power distribution equipment for three‑phase AC 50 Hz, 3.6‑40.5 kV sectionalized single‑busbar systems. It receives and distributes electric energy in power networks, and implements control, protection and monitoring for circuits. It is widely applied in power, metallurgy, petrochemical, urban construction and other industries.
This switchgear is equipped with complete “five‑prevention” functions. It can be fitted with circuit breakers such as VD4, 3AH, EV12, VB2, VSI(ZN63A), VDS(ZN63C) and ZN18(VK), complying with relevant requirements of IEC298, GB3906, GB1984 and other standards.
Technical Parameters
| Project Name | Unit | Technical Parameters |
| Rated Voltage | V | 3.6, 7.2, 12(24) |
| Rated Frequency | HZ | 50 |
| Rated Current | A | 630, 1250, 1600, 2000, 2500, 3150, 4000 |
4 s Thermal‑Stable Current (RMS) | KA | 16, 20, 25, 31.5, 40 |
Rated Dynamic‑Stable Current (Peak Value) | KA | 40, 50, 63, 80, 100 |
1 min Rated Power‑Frequency Withstand Voltage | KV | 42 (65) Between Poles |
| KV | 48 (79) Across Breaking Contacts | |
Lightning Impulse Withstand Voltage | KV | 75 (125) Between Poles |
| KV | 85 (145) Across Breaking Contacts | |
| Protection Rating | IP4X |
* All products are custom‑made, and parameters are for reference only.
Normal Use ConditionAmbient Temperature: -35°C ~ 45°C ;
Altitude: ≤1000 m;
Relative Humidity: ≤95% (daily average), ≤90% (monthly average);
Seismic Intensity: ≤Grade 8;
Service Location: Indoor, free from fire and explosion hazards, severe pollution and chemical corrosion.
Note: Special written instructions shall be required upon order if the above normal service environmental conditions are exceeded.
Product FeaturesThe cabinet structure is assembled by bolting aluminum‑zinc coated sheets processed by CNC machine tools with multiple bending techniques;
All operations are performed with the cabinet door closed;
High protection grade prevents ingress of debris and pests;
Simple and effective "five‑prevention" interlock avoids mis‑operation;
Compatible with VS1 and VD4 vacuum circuit breakers;
Easy circuit‑breaker replacement and good trolley interchangeability;
The cabinet can be installed against walls with front‑side maintenance to reduce floor space occupation;
Sufficient space in the cable chamber allows connection of multiple cables;
Heaters can be separately fitted in the circuit‑breaker chamber and cable chamber to prevent condensation and corrosion.
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Email：1211682430@qq.com
Add：No.1 Shabeili Dawu Road, Xikeng Community, Yuanshan Subdistrict, Longgang District, Shenzhen, Guangdong, P.R.China
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