KYN28 High-Voltage Switchgear
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Product Description
Product Overview
The KYN28-12 armored, withdrawable AC metal‑enclosed switchgear is a complete indoor distribution device rated for 3.6–12 kV three‑phase AC at 50 Hz. It is widely used in substation locations within power supply and distribution systems, as well as in switchgear rooms and distribution rooms at industrial and mining enterprises, commercial plazas, and residential communities. It can also directly control the frequent start‑and‑stop operations of 10 kV equipment.
This switchgear complies with the requirements of standards such as GB/T3906, DL/T404, and IEC-298, and features a dual-redundancy design that provides both mechanical “five-protection” and electrical “five-protection” functions.
When configuring electric hand carts and electric grounding switches, they can be used in the construction of intelligent substations, enabling remote control throughout the entire process for operations such as switching the switchgear on and off, manually inserting and withdrawing circuit breakers, and opening and closing grounding switches—while simultaneously providing real‑time feedback on the switchgear’s status to a remote location.
Product Model and Meaning
Operating Environment
1. Altitude ≤ 2,500 m;
2. Ambient air temperature: -10°C to +40°C;
3. Environmental Humidity: Monthly average relative humidity ≤ 90%; daily average relative humidity ≤ 95%.
4. Saturation Vapor Pressure: Daily average ≤ 2.2 × 10⁻³ MPa, monthly average ≤ 1.8 × 10⁻³ MPa;
5. Seismic intensity ≤ 8 degrees;
6. Locations free from fire hazards, explosion risks, severe pollution, chemical corrosion, and intense vibrations;
Note: For conditions beyond the above-mentioned normal operating environment, consultation with the manufacturer is required.
Main Features
1. The cabinet structure is fabricated by assembling multi‑folded aluminum‑zinc coated steel sheets.
2. All operations must be performed with the cabinet door closed.
3. High protection rating, preventing the entry of debris and pests.
4. Simple “five-protection” interlocks to prevent misoperations;
5. It can be equipped with a VS1 (ZN63A) vacuum circuit breaker, or a VD4 vacuum circuit breaker can be selected according to the user’s requirements.
6. The circuit breaker is easy to replace, and the handcart has excellent interchangeability.
7. The cabinet can be installed against a wall, with front-access maintenance, reducing the floor space required.
8. The cable room offers ample space and can accommodate multiple cables.
9. The rapid grounding switch is used for grounding and circuit shorting.
10. The circuit breaker room, relay room, and cable room can each be equipped with heaters according to user requirements to prevent condensation and corrosion.
11. The circuit breaker room and cable room can be equipped with lighting devices according to user requirements to facilitate maintenance and inspection.
Main Technical Parameters
Parameter Name | Unit | Parameters | |
Rated Voltage | kV | 3.6 7.2 12 | |
Rated Frequency | Hz | 50 | |
Rated current | A | 630 1250 1600 2000 2500 3150 | |
Rated short-time withstand current | kA | 16 20 25 31.5 40 | |
Rated short-circuit duration | S | 4 | |
Rated Peak Withstand Current | kA | 40 50 63 80 100 | |
Rated Power Frequency Withstand Voltage | Alternating, relative | kV | 24 32 42 |
Fracture surface | kV | 24 32 48 | |
Rated Lightning Impulse Withstand Voltage (Peak) | Alternating, relative | kV | 40 60 75 |
Fracture surface | kV | 40 60 85 | |
Rated Operating Voltage | Trip coil | V | DC220/110 |
Closing coil | V | AC220/110 | |
Enclosure protection rating | Trip coil | V | (DC/AC) 220/110V: 0.9/1.8 |
Closing coil | V | (DC/AC) 220/110V: 1.0/2.0 | |
Rated Operating Current | Shell | IP4X | |
Separate room | IP2X | ||
Ordering Instructions
1. Main Circuit System Diagram;
2. Schematic diagram of the auxiliary circuit’s electrical principles, auxiliary circuit voltage;
3. List of Components Inside the Cabinet (including component model, name, specifications, and quantity);
4. Layout drawing of switchgear;
5. Cabinet color (unless otherwise specified, products will be supplied according to the company’s standard);
6. List of Required Spare Parts and Components;
7. Other Terms of Use.
Keywords:
KYN28 High-Voltage Switchgear
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East of the 22nd Avenue and south of Fengda Road, Zhengzhou Economic and Technological Development Zone
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