High Voltage Switchgear
01
KYN28-12 Armored Draw-Out AC Metal-Clad Switchgear
Model Definition
Features
● Product Shell Structure
The product casing is fully assembled with bolts using aluminum-zinc coated steel plates, formed by multi-stage bending via CNC machine tools. This structure ensures high mechanical strength, effectively maintaining product integrity and aesthetics. The cabinet doors are finished with plastic spray coating, offering strong impact resistance and corrosion protection. The shell achieves an IP4X protection rating.
● Circuit Breaker Configuration
The main switch supports VS1-type vacuum circuit breakers, as well as various domestic series (e.g., VD4, VH1, VK, VJD).
● Insulation & Technical Advantages
● For any circuit breaker type, the air insulation distance of bare conductors is ≥125mm, and composite insulation ≥60mm.
● All circuit breakers feature long service life, high parameters, minimal maintenance, and compact design.
Operating conditions
● Ambient Temperature: -15°C to +40°C
● Humidity Conditions:
● Daily average relative humidity ≤95%, daily average vapor pressure ≤2.2kPa
● Monthly average relative humidity ≤95%, monthly average vapor pressure ≤1.8kPa
● Altitude: ≤1000m
● Seismic Intensity: ≤8 degrees
● Surrounding Air: Free from significant contamination by corrosive/flammable gases, water vapor, etc.
● Vibration: Installation site free from frequent severe vibration
Technical specifications
| Items |
Unit |
Data |
||
| Rated voltage |
KV |
3.6, 7.2, 12 |
||
| Rated frequency |
Hz |
50 |
||
| Rated current of circuit breaker |
A |
630, 1250, 1600, 2000, 2500, 3150, 4000 |
||
| Rated current of switchgear |
A |
630, 1250, 1600, 2000, 2500, 3150, 4000 |
||
| Rated short-time withstand current |
KA |
16, 20, 25, 31.5, 40, 50 |
||
| Rated peak withstand current (peak value) |
KA |
40, 50, 63, 80, 100, 25 |
||
| Rated short-circuit breaking current |
KA |
16, 20, 25, 31.5, 40, 50 |
||
| Rated short-circuit making current (peak value) |
KA |
40, 50, 63, 80, 100, 25 |
||
| Rated insulation level | 1min power frequency withstand voltage | Phase-to-phase & Phase-to-ground |
KV |
25, 30, 42 |
| Isolating break |
KV |
27, 34, 48 |
||
| Lightning impulse withstand voltage(peak) | Phase-to-phase & Phase-to-ground |
KV |
40, 60, 75 |
|
| Isolating break |
KV |
46, 70, 85 |
||
| Protection level | Enclosure: IP4X, Compartment room (door open): IP2X | |||
Note: The above data is subject to change due to technical improvement.