High Voltage Switchgear
01
KYIN61-40.5 Armored Draw-Out AC Metal-Clad Switchgear
Model Definition
Features
● Modular Cabinet Structure: The cabinet adopts an assembled structure, and the circuit breaker features a floor-mounted truck structure.
● New-type Composite Insulation VCB: Equipped with a new-generation composite insulation vacuum circuit breaker (VCB) with excellent interchangeability and simple replacement.
● Screw-nut Advancement Mechanism: The truck frame is equipped with a screw-nut propulsion mechanism for smooth truck movement, preventing operational errors that may damage the advancement structure.
● Fully Enclosed Operation: All operations can be performed with the cabinet door closed.
● Mandatory Mechanical Interlocking: Interlocks between the main switch, truck, and cabinet door adopt mandatory mechanical locking, meeting the "five-proof" safety functions.
● Ample Cable Space: The cable chamber allows connection of multiple cables; a quick earthing switch is provided for grounding and closing short-circuit loops.
● Protection Class: IP3X for the enclosure; IP2X when the truck chamber door is open.
Standards Compliance: Complies with GB3906-2006, DL/T 404-2007, and is formulated with reference to IEC 298.
Operating conditions
● Ambient Temperature: Maximum +40°C, with a 24-hour average not exceeding 35°C; minimum -10°C.
● Altitude: Not exceeding 1,000 meters above sea level.
● Relative Humidity: Daily average ≤95%; monthly average ≤90%.
● Seismic Intensity: Not exceeding 8 degrees.
● Water Vapor Pressure: Daily average ≤2.2 kPa; monthly average ≤1.8 kPa.
● Surrounding Environment: Locations free of fire/explosion hazards, severe pollution, chemical corrosion, and intense vibration.
Technical specifications
|
No. |
Items |
Unit |
Data |
||
|
1 |
Rated voltage |
kV |
40.5 |
||
|
2 |
Rated frequency |
Hz |
50 |
||
|
3 |
Main bus rated current |
A |
1250, 1600, 2000 |
||
|
4 |
Branch bus rated current |
A |
630, 1250, 1600 |
||
|
5 |
Rated insulation level | 1 min power frequency withstand voltage (effective value) |
kV |
Phase to phase, phase to ground |
Primary isolation break |
| Lightning impulse withstand voltage (peak value) |
95 |
115 |
|||
|
185 |
215 |
||||
| Auxiliary control circuit 1min power frequency withstand voltage |
V |
2000 |
|||
|
6 |
Rated short-circuit breaking current |
k |
25, 31.5 |
||
|
7 |
Rated short-circuit making current (peak value) |
k |
63, 80 |
||
|
8 |
Rated short-time withstand current (4s) |
k |
25, 31.5 |
||
|
9 |
Rated peak withstand current |
k |
63, 80 |
||
|
10 |
Auxiliary control circuit rated voltage |
V |
-110,-220,-220 |
||
|
11 |
Protection level |
Switchgear enclosure |
IP4X |
||
| Compartment room (door open) |
IP2X |
||||
Note: The above data is subject to change due to technical improvement.