High Voltage Switchgear
KYIN61-40.5 Armored Draw-Out AC Metal-Clad Switchgear
Product Overview
The KYIN61-40.5 Armored Draw-out AC Metal-clad Switchgear, is an indoor complete power distribution device for three-phase AC systems with 50Hz frequency and 40.5kV rated voltage. It is used in power plants, substations, industrial and mining enterprises for power reception and distribution, providing circuit control, protection, and monitoring functions, and is suitable for frequent operation scenarios.
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Product 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.
Product Details & Applications
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 |
| 5 | Rated insulation level | Lightning impulse withstand voltage (peak value) | kV | 95 | 115 |
| 5 | Rated insulation level | Lightning impulse withstand voltage (peak value) | kV | 185 | 215 |
| 5 | Rated insulation level | 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 | ||
| 11 | Protection level | Compartment room (door open) | IP2X |
Model Designation
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