Overview
KYN28-24 switchgear is a medium voltage switchgear solution with a variety of functions to prevent misoperation, including preventing moving handcar with load, preventing grounding switch from closing the circuit breaker, preventing live grounding switch and preventing straying into the live compartment. This 24kV metal‑clad switchgear is widely used in substations and industrial power distribution systems by global switchgear manufacturers and suppliers.
Switchgear equipped with excellent performance of VS1, VN2 series of medium high voltage AC vacuum circuit breaker and solid sealed vacuum switch. The secondary circuit of the switchgear is equipped with advanced and reliable control and protection elements; The bus bar adopts heat shrink insulation material or epoxy coated insulation means, optimizes the electrode shape, and the cabinet structure is compact. The switchgear is a power distribution equipment with advanced technology, stable performance, reasonable structure, convenient use, safety and reliability, making it suitable for industrial buyers, engineering contractors, and power equipment procurement projects.
Model Meaning
| K | Y | N | 28 | – | 24 | Z |
| ↓ | ↓ | ↓ | ↓ | | ↓ | ↓ |
| Metal armoured type | Shifting type | Indoor | Design sequence number | | Rated voltage (KV) | Vacuum circuit breaker |
Conditions Of Use
◆ Environmental conditions: maximum temperature +40℃ , minimum temperature -15℃ , and the average measured within 24h does not exceed 35℃
◆ Temperature conditions are as follows: the average daily relative humidity does not exceed 95%; The average monthly relative humidity is less than 90%. The average daily steam pressure does not exceed 2.2kPa; The average monthly vapor pressure does not exceed 1.8kPa;
◆ Altitude does not exceed 1000m;
◆ The surrounding air is not significantly contaminated by dust, smoke, corrosive or combustible gases, vapors or salt spray;
◆ Vibration or ground movement from outside switchgear and control equipment can be ignored;
◆ The amplitude of electromagnetic interference induced in the secondary system does not exceed 1.6kV.
KYN28-24 Armored Withdrawable Type AC Metal-Enclosed Switchgear
| Item | Units | Argumentt |
| Rated short-time withstand current(4s) | kA | 20 | 31.5 |
| Rated peak withstand current | kA | 50 | 80 |
| Rated voltage of auxiliary control loop | V | Dc or AC 110/220 |
| Class of protection | | IP4X(Open circuit breaker door or IP2X between compartmentalrooms) |
| Overalldimensions(WXDXH) | mm | 800×1810×2380 | 1000×1810×2380 |
| Weight | kg | 840~1440 | 840~1440 |
| Rated voltage | kV | 24 | 24 |
| Rated frequency | Hz | 50/60 | 50/60 |
| Lightning impulse withstand voltage
(peak) | kV | Interphase | 60 | Isolation fracture | 79 |
Rated
insulation level | 1min power frequency withstand
voltage(RMS) | kV | Interphase | 125 | Isolation fracture | 145 |
Auxiliary control loop power frequency
withstand voltage | V | 2000 |
| Rated current | A | 630,1250,1600,2000,2500,3150 |
| Rated short-circuit breaking current | kA | 20 | 31.5 |
| Rated short circuit closing current(peak) | kA | 50 | 80 |
FAQs
What is KYN28-24 switchgear?
KYN28-24 is a 24kV metal-clad withdrawable switchgear used in medium-voltage power distribution systems.
What are the advantages of metal-clad switchgear?
Includes high safety, compartmentalized design, easy maintenance, and reliable interlocking.
Where is KYN28-24 switchgear used?
Widely used in substations, industrial plants, commercial buildings, and renewable energy systems.
How to choose the right medium voltage switchgear?
Consider voltage level, short-circuit rating, protection scheme, and installation environment.
Does KYN28-24 comply with IEC standards?
Yes, it typically meets IEC 62271-200 and related MV switchgear standards.
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