Complete Product Introduction

1. Product Brief Introduction

The KYN28-24 type withdrawable AC metal-enclosed switchgear (hereinafter referred to as the equipment) is suitable for indoor three-phase 50/60Hz power systems with a rated voltage of 24kV. It is mainly applied in power plants, substations, industrial and mining enterprises and high-rise buildings for accepting and distributing electric energy, as well as controlling, protecting and monitoring electric circuits.

The KYN28-24 type switchgear is equipped with various interlocking devices to prevent misoperation, including preventing the movement of the charged withdrawable handcart, preventing the closing of the circuit breaker at the wrong switch position, preventing the closing of the earthing switch with the switchgear compartment electrified, and preventing the electrification of the switchgear compartment with the earthing switch closed. The switchgear is equipped with high-performance VS1, VN2 series medium-high voltage AC vacuum circuit breakers and pot-type vacuum switches. The secondary circuit of the switchgear is configured with reliable control and protection components; the busbar is made of heat-resistant insulating materials or epoxy coating insulation means, and the electrode shape is optimized. The overall structure is compact. The equipment is a power distribution device that meets technical standards, with stable performance, reasonable structure, convenient use, safety and reliability.

2. Model Meaning & Explanation

The coding of the product model contains the core structural characteristics and parameter information of the switchgear. The specific meaning of each part of the model is as follows:

K: Metal-enclosed
Y: Withdrawable
N: Indoor
28: Design serial number
24: Rated voltage
(Z): Vacuum circuit breaker

3. Normal Operating Environment

• Environmental conditions: Maximum temperature: +40℃, minimum temperature: -15℃, and the average value measured within 24h shall not exceed +35℃;
• Humidity conditions are as follows: The average value of relative humidity shall not exceed 95%; the average value of monthly relative humidity shall not exceed 90%; the average value of monthly water vapor pressure shall not exceed 2.2kPa, and the average value of monthly water vapor pressure shall not exceed 1.8kPa;
• Altitude shall not exceed 1000m;
• The surrounding air is not obviously polluted by dust, smoke, corrosive and flammable gases, steam or salt mist;
• Vibration or shock from switchgear equipment and external equipment can be ignored;
• The amplitude of electromagnetic interference induced in the secondary system shall not exceed 1.6kV.

4. Product Characteristics

• Equipped with complete misoperation prevention interlocking devices to ensure the safe operation of the equipment and avoid electrical accidents caused by human misoperation;
• Adopts high-performance vacuum circuit breakers with excellent breaking capacity and long service life, which can adapt to frequent operation;
• Compact overall structure, small floor area, suitable for various indoor power distribution scenarios with limited space;
• Reliable insulation design, optimized electrode shape and high-quality insulating materials ensure good insulation performance and operation reliability under 24kV rated voltage.

5. Technical Parameters of Spring Operating Mechanism

6. Ordering Notes

When placing an order for the KYN28-24 type switchgear, please provide the following information to ensure that the product meets the actual use requirements:

• Exact product model and specification (including whether vacuum circuit breaker configuration is required)
• Special requirements for operating environment (such as high altitude, high humidity, etc.)
• Customized requirements for secondary circuit control and protection components
• Other special technical requirements (if any)