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Product Overview
As a complete set of sophisticated power distribution equipment, the kyn28a 24 excels in receiving and distributing electrical energy while providing comprehensive circuit protection. Unlike standard 24kV switchgears, this series features a highly compact structure that reduces the physical volume by 50%, matching the footprint of smaller 12kV mid-mounted units. In a 20kV system, it achieves superior insulation levels without the need for composite insulation or inter-phase partitions.
The product is fully compliant with several rigorous industry standards, including:
- GB3906: 3~35kV AC Metal-Enclosed Switchgear.
- DL404: Indoor AC High-Voltage Switchgear Panel.
- IEC298: AC Metal-Enclosed Switchgear and Controlgear.
kyn28a 24 Features & Benefits
- Space-Saving Efficiency: The unit’s volume is reduced by 50% compared to ordinary switchgear, allowing for highly flexible back-to-wall or double-row installation in tight indoor substations.
- Advanced CNC Aluminum-Zinc Shell: The enclosure is crafted from imported aluminum-zinc coated steel sheets using multi-fold CNC processing. This ensures high precision, exceptional corrosion resistance, and high mechanical strength capable of withstanding heavy physical stress.
- Intelligent Temperature & Control: Can be equipped with 6-point or 9-point online temperature measurement technology. It supports remote electric operation for grounding switches and the electric racking in/out of the circuit breaker handcart.
- Rigorous “Five-Prevention” Interlock: Features a highly reliable mechanical interlock system to prevent operational errors, such as mis-opening the circuit breaker or straying into a live compartment.
- High-Voltage Resilience: Rated for 24kV, with a robust 1-minute power frequency withstand voltage of 65kV and a lightning impulse withstand peak of 125kV.
Technical & Artistic Details
The KYN28A-24 is engineered with precise technical parameters to handle heavy electrical loads while ensuring operator safety.
- Insulation & Protection: Offers a 1-minute power frequency withstand voltage of 65kV and a lightning impulse withstand peak of 125kV.
- Material Integrity: The enclosure is built to withstand significant physical stress, with surface load values exceeding 980N.
- Seismic Resilience: Designed to maintain integrity in seismic zones with earthquake intensities up to 8 degrees.
- Environmental Sealing: The enclosure is rated IP4X, providing high-level protection against the ingress of foreign objects.
- Circuit Monitoring: Supports auxiliary contacts (2NO+2NC) for vacuum circuit breaker position and isolating switch status.
kyn28a 24 Main Technical Parameters
| Parameter | Unit | Technical Data |
|---|---|---|
| Rated Voltage | kV | 24 |
| 1min Power Frequency Withstand Voltage | kV | 65 |
| Rated Lightning Impulse Withstand Voltage (Peak) | kV | 125 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 630, 1250, 1600, 2000, 2500 |
| Branch Busbar Rated Current | A | 630, 1250, 1600, 2000, 2500 |
| Rated Short-time Withstand Current (Effective) | kA | 16, 20, 25 |
| Rated Peak Withstand Current | kA | 40, 50, 63 |
| Rated Short-circuit Duration | s | 3 |
| Protection Level | – | Enclosure IP4X, Compartment Doors Open IP2X |
| Mass | kg | 800, 1000 |
Reliability and Conclusion
FAQ
It is designed to operate safely in ambient air temperatures between -5°C and +40°C, at altitudes not exceeding 2000m. The daily average relative humidity must not exceed 95% (monthly average ≤90%), and it can withstand earthquake intensities up to 8 degrees.
The main enclosure and the handcart frame are manufactured from high-quality imported aluminum-zinc coated steel sheets. Processed via CNC machines with a multiple-folding technique, this construction offers superior mechanical strength, light weight, and excellent anti-oxidation and anti-corrosion properties.
