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KYN61-40.5 High Voltage Switchgear - IEC Certified 40.5kV Metal-Enclosed Cabinet from China Suppliers & Factory
Model meaning
Conditions of use
- Altitude: ≤1000m;
- Ambient temperature: upper limit of ambient air temperature +40℃, lower limit -15℃;
- Relative humidity: The daily average relative humidity shall not exceed 95%; monthly average relative humidity shall not exceed 90%;
- Seismic intensity: The seismic intensity does not exceed 8 degrees
- It's not suitable for places with obvious pollution such as corrosive or flammable gas and water vapor, etc.
- When the above normal service conditions are not met, the user can negotiate with the manufacturer.
Product characteristics
- The switchgear is designed with complete metal armor and fully enclosed structure.
- The interior of the switchgear is divided into four independent compartments: circuit breaker room, busbar room, cable room and relay instrument room. Each functional unit is sealed with metal plates and equipped with independent pressure release channel and release door.
- The switch cabinet body is made of high-quality cold-rolled steel plate processed by CNC sheet metal forming, and connected by high-strength bolts, nuts and rivet nuts. The surface of the components is sprayed or galvanized; it can be equipped with ZN85A vacuum circuit breaker and French Schneider's SF1, SF2 type and Alstom FP series SF6 circuit breaker to meet the needs of different users.
- The switchgear can perform circuit breaker opening and closing, moving-in/out, and ground switch opening and closing with the cabinet door closed.
- The switchgear is designed to prevent misoperation of circuit breaker, prevent pushing trolley with load, prevent ground switch from transmitting power at the grounding position, and prevent accidental entry into live compartments, meeting the "five prevention" functions.
- The convenient door panel observation window of the switchgear allows for viewing of the circuit breaker's on/off status, trolley position, energy storage position, and ground switch's on/off status.
- The switchgear trolley has good interchangeability, and the secondary wires are located in spacious cable tray, which are beautiful and easy to find. The primary cable connection is convenient.
- The protection level of the outer shell is IP4X, while the protection level is IP2X between small rooms and when the circuit breaker door is open. The installation and maintenance of the cabinet can be carried out on the front or back. The switchgear can not only be installed in a face-to-face or back-to-back double row arrangement, but also can be installed against the wall according to specific project requirements, which saves floor space and improves the safety and flexibility of the switchgear.
Outline dimension and schematic diagram of switchgear structure
1. Shell
2. Valve bracket
3. Circuit breaker trolley
4. Contact box
5. Busbar sleeve
6. Instrument room
7. Pressure relief device
8. Current transformer
9. Ground switch
Technical parameter
| Item | Unit | Argument | ||
| Rated voltage | kV | 40.5 | ||
| Rated frequency | Hz | 50 | ||
| Rated current of main busbar | A | 630,125,016,002,000 | ||
| Rated current of branch busbar | A | 63,012,501,600 | ||
| Phase-phase, phase-ground | Isolating distance | |||
| Rated insulation level | 1min power frequency withstand voltage (effective value) | kV | 95 | 115 |
| Lightning impulse withstand voltage (peak value) | kV | 185 | 215 | |
| 1min power frequency withstand voltage of auxiliary control circuit | V | 2000 | ||
| Rated short-circuit breaking current | kA | 25, 31.5 | ||
| Rated short-circuit making current (peak value) | kA | 63, 80 | ||
| Rated short-time withstand current (4S) | kA | 25, 31.5 | ||
| Rated peak withstand current | kA | 63, 80 | ||
| Rated voltage of auxiliary control circuit | V | AC or DC110V/220V | ||
| Protection level | IP4X / IP2X | |||
| Outline dimension (Width × Depth × Height) | mm | 1400x2800(3000)x2800 (*number in parentheses represents SF6 trolley solution) | ||
| Weight | kg | 2300 About 2300 | ||
Frequently Asked Questions (FAQ)
Q1: What are the installation altitude limit and ambient temperature requirements for this switchgear?
The standard service conditions require an altitude of ≤1000m. The ambient air temperature should have an upper limit of +40℃ and a lower limit of -15℃.
Q2: Which types of circuit breakers can be configured inside the switch cabinet?
The switch cabinet can be flexibly equipped with ZN85A vacuum circuit breakers, French Schneider's SF1 or SF2 types, and Alstom FP series SF6 circuit breakers to meet different project needs.
Q3: How does the switchgear ensure safety during operations?
It features a robust "five prevention" interlock design that prevents misoperation of the circuit breaker, pushing the trolley with load, ground switch power transmission at the grounding position, and accidental entry into live compartments. All standard operations can be performed with the cabinet door closed.
Q4: What is the enclosure and internal compartment protection level?
The outer shell of the switchgear offers an IP4X protection rating, while the protection level between internal compartments and when the circuit breaker door is open is IP2X.
Q5: Can the switchgear structure layout be customized to save floor space?
Yes. The cabinet can be installed against the wall, face-to-face, or in a back-to-back double row arrangement according to specific layout requirements, saving floor space while maintaining high safety and flexibility.