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KYN61-40.5 Air-Insulated Withdrawable Metal-Clad Switchgear - Reliable China Suppliers and Factory Solutions
Detail Introduction
Core Switchgear System
In the KYN61-40.5 withdrawable AC metal-clad switchgear, the handcart is equipped with an integrated ZN85 (VTD9) ND4-40.5 vacuum circuit breaker or a corresponding SF6 circuit breaker as the main switch. The design is compact, with superior performance and high reliability.
Standard Compliance
KYN61 switchgear comply with the standards: IEC62271-200, GB3906 as well as many other national specifications, with reliable "five-protection interlock" function, providing a safer environment for the operators, with high structure strength, safe and user-friendly, reduced installation and maintenance costs, can completely satisfy user requirements.
Service Conditions
- Ambient temperature: -15℃ ~ +40℃
- Altitude: ≤ 1000M
- Relative humidity: Daily average relative humidity ≤ 95%, Monthly average relative humidity ≤ 90%
- Seismic resistant level: < Grade 8
- Ambient air: Should be free of the pollution of corrosive or flammable gases, vapor, etc.
※ Note: If the service environment exceeds the above conditions, please confirm with the manufacturer.
Technical Data
Main technical data of KYN61 switchgear:
| Item | Unit | Technical parameters | |
|---|---|---|---|
| Rated voltage | kV | 40.5 | |
| Rated frequency | Hz | 50/60 | |
| Rated current of branch busbar | A | 630、1250、1600、2000、2500、3150 | |
| Rated insulation level | Power frequency withstand voltage (1 min) | kV | 95/118 (isolating fracture) |
| Lightning impulse withstand voltage | 185/215 (isolating fracture) | ||
| Power frequency withstand voltage of auxiliary circuit (1 min) | V | 2000 | |
| Rated short circuit breaking current (rms) | kA | 25、31.5 | |
| Rated short time making current (peak) | kA | 63、80 | |
| Rated short time peak withstand current | kA | 63、80 | |
| Rated short time withstand current (4s) | kA | 25、31.5 | |
| Rated voltage of auxiliary control circuit | V | DC110/220 AC220 | |
| Protection degree | - | External enclosure: IP4X (the panel open: IP2X) | |
| External dimensions of switchgear (W x D x H) | mm | 1400×2800×2600 1200×2600×2400 (optional) | |
Structure Features
KYN61 switchgear is designed as per the standard of metal-clad switchgear, conforms to IEC 62271 and GB/T3906. It mainly includes panel structure and the withdrawable part. The panel itself consists of four independent compartments: busbar compartment, circuit breaker compartment, cable compartment, low voltage compartment. The protection degree of enclosure is IP4X, and IP2X for compartments. The withdrawable part includes the main switch (or other functional components) and support part.
KYN61 switchgear provides bottom and overhead incoming and outgoing cable types, typical scheme including incomer, feeder, metering, measuring coupler, etc.
Drawing 1: Outline dimension and structure of switchgear
A. Instrument room
B. Circuit breaker room
C. Busbar room
D. Cable room
1. Panel
2. Circuit breaker
3. Contact box
4. Secondary plug device
5. Valve
6. Pressure relief device
7. Small busbar
8. Busbar bushing
9. Main busbar
10. Branch busbar
11. Fixed contact
12. Insulated clapboard
13. Earthing switch
14. Current transformer
15. Cable
16. Cable cover plate
17. Earthing busbar
Order Notes
The clients should provide the following documents:
- Main wiring scheme No., single line system diagram, arrangement diagram and layout plan.
- The requirements for control, measurement and protection of switchgears, and requirements for other interlocks and automatic devices.
- Main components type, specification and quantity in switchgear.
- If need busbar bridge, please provide the size of span and height.
- If the switchgear used under special condition, please inform the details.
- Please provide type and quantity if need additional parts.
Frequently Asked Questions (FAQ)
What standard requirements does KYN61 switchgear meet?
KYN61 switchgear strictly complies with international and national standards, including IEC62271-200 and GB3906, ensuring high structure strength, reliable "five-protection interlock" functions, and low maintenance costs.
What types of circuit breakers can be integrated into the handcart?
The handcart is standardly equipped with an integrated ZN85 (VTD9) ND4-40.5 vacuum circuit breaker. Alternatively, a corresponding SF6 circuit breaker can be used as the main switch.
What are the normal environmental conditions for installing this switchgear?
The standard service conditions include an ambient temperature of -15℃ to +40℃, altitude ≤1000m, daily average relative humidity ≤95% (monthly ≤90%), and seismic resistance less than Grade 8. Special environments require manufacturer confirmation.
What is the IP protection rating of the KYN61 switchgear?
The switchgear features an IP4X rating for the external enclosure to protect against particle ingress, and an IP2X rating for individual compartments when the panel is open.
What are the main compartments inside the KYN61 switchgear?
The panel structure is divided into four independent compartments: the Busbar compartment, the Circuit Breaker compartment, the Cable compartment, and the Low Voltage/Instrument compartment.