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Product Overview
The kyn28a 12 (GZS1) armored moveable ac metal enclosed switchgear is a modern power distribution solution designed to operate within three-phase AC 50Hz systems. It serves the critical functions of receiving and distributing electrical energy while providing comprehensive circuit control, protection, and monitoring. This specific series features newly developed high-current and high-breaking capabilities, making it versatile enough to be deployed independently as a high-voltage generator outlet or as a reliable metal enclosed interrupter switchgear.
The product is fully compliant with several rigorous industry standards, including:
- GB3906: 3~35kV AC Metal-Enclosed Switchgear.
- GB/T11022: Common Technical Requirements for High-Voltage Switchgear and Controlgear.
- IEC298: AC Metal-Enclosed Switchgear and Controlgear for rated voltages above 1kV up to and including 52kV.
kyn28a 12 Features & Benefits
- Segmented Armored Design: Features fully isolated compartments (Busbar, Circuit Breaker, Cable, and Relay) with grounded metal partitions to maximize operational safety.
- High-Voltage Resilience: Engineered for a rated voltage of up to 12kV, supported by a 1-minute power frequency withstand voltage of 42kV and a lightning impulse withstand voltage of 75kV.
- Superior Environmental Protection: Enclosed in a durable IP4X-rated shell, with IP2X protection when the circuit breaker door is open.
- Broad Capacity Range: Highly adaptable to varying industrial loads, supporting rated currents from 630A up to 3150A.
- Robust Operating Conditions: Operates flawlessly in ambient temperatures ranging from -10°C to +40°C, and at altitudes up to 1000m. Resilient against earthquake intensities up to 8 degrees.
Technical Details
1. Switchgear Main Technical Parameters
| Parameter | Technical Data |
|---|---|
| Rated Voltage (kV) | 3.6 / 7.2 / 12 |
| Rated Power Frequency Withstand Voltage (1min) (kV) | 42 |
| Rated Lightning Impulse Withstand Voltage (kV) | 75 |
| Rated Frequency (Hz) | 50 |
| Rated Current (A) | 630, 1250, 1600, 2000, 2500, 3150 |
| Rated Short-circuit Breaking Current (kA) | 16, 25, 31.5, 40, 50 |
| Rated Short-time Withstand Current (4s) (kA) | 16, 25, 31.5, 40, 50 |
| Rated Peak Withstand Current (kA) | 40, 63, 80, 100, 125 |
| Protection Level | Enclosure IP4X, Circuit Breaker Room Door Open IP2X |
2. VS1 & VD4 Vacuum Circuit Breakers Parameters
| Parameter | Technical Data |
|---|---|
| Rated Voltage (kV) | 12 |
| Rated Operating Current (A) | 630, 1250, 1600, 2000, 2500, 3150 |
| Rated Short-circuit Breaking Current (kA) | 16, 25, 31.5, 40, 50 |
| Rated Short-circuit Making Current (Peak) (kA) | 40, 63, 80, 100, 125 |
| Rated Short-time Withstand Current (4s) (kA) | 16, 25, 31.5, 40, 50 |
| Rated Peak Withstand Current (kA) | 40, 63, 80, 100, 125 |
| Mechanical Life (Times) | 10,000 |
3. Switchgear Structural Dimensions
| Dimension | Size (mm) |
|---|---|
| Width | 800, 1000 |
| Depth | 1500, 1660 |
| Height | 2300 |
Switchgear construction – sectional view
A. Busbar Compartment B. Circuit Breaker Truck Compartment
- Enclosure
- Branch Busbar C. Cable Compartment
- Busbar Bushing
- Main Busbar D. Relay and Instrument Compartment
- Fixed Contact Assembly
- Contact Box
- Current Transformer
- Earthing Switch
- Cable
- Surge Arrester
- Earthing Busbar
- Removable Partition
- Shutter
- Secondary Plug
- Circuit Breaker Truck
- Heater
- Extractable Horizontal Partition
- Earthing Switch Operating Mechanism
- Bottom Plate
- Pressure Relief Device
- Control Wire Duct
Reliability and Conclusion
Investing in the kyn28a 12 guarantees a highly dependable and durable power management infrastructure. With its strict adherence to safety protocols, exceptional short-circuit breaking capabilities, and precise interlock mechanisms to prevent misoperation, this switchgear is the definitive choice for securing your electrical networks against unexpected surges.
FAQ
While the standard rated voltage options are 3kV, 6kV, and 10kV, this switchgear is heavily insulated and safely supports a highest operating voltage of up to 12kV.
It is designed to operate optimally in ambient air temperatures between -10°C and +40°C, at altitudes not exceeding 2000m. The surrounding environment must be free from severe pollution, corrosive gases, and severe persistent vibrations.
The system is fully compatible with withdrawable VS1 and VD4 vacuum circuit breakers. These breakers provide reliable dynamic withstand capabilities (up to 125kA) and extremely rapid circuit breaking times (as low as 60ms) to comprehensively protect your network.
