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丽水KYN61-40.5 Armored Removable AC Metal Enclosed Switchgear
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Product Description
Overview
KYN61-40.5 (Z) armored removable AC metal-enclosed switchgear (hereinafter referred to as "switchgear") is suitable for three-phase AC 50Hz power system, used in power plants, substations and distribution rooms of industrial and mining enterprises to receive and distribute electric energy, and control, protect and monitor circuits.
This product complies with the standards GB3906 "3~35kV AC metal-enclosed switchgear", GB/T11022 "Common Technical Requirements for High-voltage Switchgear and Control Equipment Standards", 1EC60298 "AC Metal-enclosed Switchgear and Control Equipment with Rated Voltages Above 1kV and Below 50kV".
Model Meaning
| H | Y | N | 61 | - | 40.5 | 口 | / | 口 | Z |
| Metal armored | Removable | Indoor | Design No. | Rated voltage (KV) | Circuit breaker type Z: Vacuum SF6 Sulfur hexafluoride |
Rated current (KV) | Vacuum circuit breaker |
Conditions of use
• Ambient air temperature: maximum temperature +40°C, minimum temperature -15°C;
• Altitude: ≤2000m;
• Ambient relative humidity: daily average ≤95%, monthly average ≤90%;
• Air: not suitable for places with corrosion, severe pollution, flammable gases and severe vibration;
• If an earthquake occurs, the earthquake intensity cannot exceed 8 degrees.
Main technical parameters
| Project | Unit | Parameter | |
| Rated voltage | kV | 40.5 | |
| Rated insulation level | Lightning impulse voltage (full wave) | kV | 185 |
| Power frequency withstand voltage (1min) | 95 | ||
| Rated frequency | Hz | 50 | |
| Rated current | A | 630、1250、1600、2000 | |
| Rated circuit breaking time | Power frequency withstand voltage (1min) | kV | 20、25、31.5 |
| Rated short-circuit making current (peak value) | kA | 50、63、80 | |
| Rated dynamic stability current (peak value) | kA | 50、63、80 | |
| 4s thermal stability current (effective value) | kA | 20、25、31.5 | |
| Enclosure protection level | Vacuum circuit breaker cabinet | mm | IP4X |
| Dimensions (width x depth x height) | SF6 short circuit breaker cabinet | mm | 1400×2200×2600 |
Structural features
The switch cabinet structure is designed according to the armored metal-enclosed switchgear standards in GB3906-2006 and IEC298. The whole is composed of two parts: the cabinet and the withdrawable part (trolley). The cabinet structure is assembled, bolted and combined, and the metal partition is used to divide the inside of the switch cabinet into the circuit breaker room, main busbar room, cable room and relay instrument room. The shell protection level reaches IP3X, the protection level between each compartment is IP2X, and all metal structural parts are reliably grounded. There is an independent exhaust pressure release channel between the compartments of the main circuit system.
According to the purpose, the trolley can be divided into circuit breaker trolley, voltage transformer trolley, metering trolley, isolation trolley, etc. The appearance dimensions of various trolleys are the same, and the trolleys for the same purpose have good interchangeability; the trolley has a test 1 isolation position and a working position in the cabinet, and each position is equipped with an interlocking device to ensure that the trolley cannot be moved at will when it is in the above two positions.
Circuit breaker technical parameters
| Project | Unit | Parameter | |||
| ZN85A-40 3AH3 | SF1/SF2 | ||||
| Rated voltage | kV | 40.5 | |||
| Rated insulation level | Lightning impulse voltage (full wave) | kV | 185 | ||
| Power frequency withstand voltage (1min) | 95 | ||||
| Rated frequency | Hz | 50 | |||
| Rated current | A | 1250、1600、2000 | 630、1250、2500 | ||
| Rated circuit breaking time | kV | 20、25、31.5 | 25、31.5 | ||
| Rated short-circuit closing current (peak value) | kA | 50、63、80 | 63、80 | ||
| Rated dynamic stability current (peak value) | kA | 50、63、80 | 63、80 | ||
| 4s thermal stability current (effective value) | kA | 20、25、31.5 | 25、31.5（s） | ||
| Opening time | ms | 36-60 | ≤45 | ||
| Closing time | ms | 40-60 | ≤75 | ||
| Rated operation sequence | Open-0.3S-Close Open-180S-Close Open | ||||
Equipment structure diagram
A. Instrument room B. Circuit breaker room C. Busbar room D. Cable room E. Small busbar room
1. Pressure relief plate 2. Lifting ring 3. Valve 4. Circuit breaker 5. Contact box 6. Secondary plug 7. Heating device 8. Current transformer 9. Cable 10. Insulating partition 11. Earthing switch 12. Main busbar 13. Branch busbar 14. Busbar bushing 15. Lightning arrester 16. Lighting lamp
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