| Customization: | Available |
|---|---|
| Breaking Capacity: | High Voltage Circuit Breakers |
| Operation: | Manual Type |
|
Still deciding? Get samples of US$ 6000/Piece
Order Sample
|
| Shipping Cost: | Contact the supplier about freight and estimated delivery time. |
|---|
| Payment Methods: |
|
|---|---|
| Support payments in USD |
| Secure payments: | Every payment you make on Made-in-China.com is protected by the platform. |
|---|
| Refund policy: | Claim a refund if your order doesn't ship, is missing, or arrives with product issues. |
|---|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
35kV Vacuum SF6 Circuit Breaker 40.5kV Main Switch with 630A Rated Current Air Blow Circuit Breaker
LYHM series medium-voltage circuit breakers use sulphur hexafluoride (SF6) gas as arc extinguishing and insulating medium.
SF6 gas has smooth breaking characteristics, in which no cut-off phenomenon occurs when breaking current and no operational overvoltage is generated. This excellent characteristic ensures that the circuit breaker has a long electrical life. It has no impact on the shock, dielectric level or thermal stress of the equipment during operation.
The pole pole of the circuit breaker, i.e. the interrupter section, is a maintenance-free closed system for life. The sealing life is in accordance with IEC 62271-100 and CEI17-1.
The opening/closing process of LYHM series circuit breakers is carried out by REH type spring actuator.
The actuator and pole are fixed on the same metal frame, which also serves as a handcart that can be pushed in and out along the guide rails inside the switchgear, and the handcart movement can be operated when the cabinet door is closed.
The lightweight and compact construction of the circuit breaker ensures that it is robust and reliable.
Applications
LYHM series circuit breakers are used for the control and protection of distribution lines, substations, distribution stations, motors, transformers and capacitor banks.
Due to the SF6 automatic buffer breaking technology, LYHM circuit breakers do not generate operational overvoltage, so they are very suitable for applications where the level of dielectric strength of the insulating material is particularly sensitive, especially for capacitive and inductive loads, such as capacitor banks, compensating reactors and motors.
Applying ambient Conditions:
1. Ambient temperature: -15ºC~+40ºC, the average temperature is not more than 35ºC in 24 hours
2. Height above sea level:≤1000m;
3. Relative humidity: the average humidity of a day should be no more than 95%; the average humidity of a month should be no more than 90%;
4. Saturated vapor pressure: the average pressure of a day should be no more than 2. 2kPa, the average humidity of a month should be no more than l.8kPa;
5. Environmental conditions: It should be installed in the places without dust, smoke, chemical erosion, combustible gas and saline fume pollution.
Technical Parameters
| No. | Item | Unit | LYHM-4 | LYHM-17 | LYHM-24 | LYHM-36 | LYHM-40 |
| 1 | Rated Voltage | Ur [kV] | 12 | 17.5 | 24 | 36 | 40.5 |
| 2 | Rated insulation voltage | Us [kV] | 12 | 17.5 | 24 | 36 | 40.5 |
| 3 | 50 Hz(1min) frequency withstand voltage | Ud [kV] | 28 | 38 | 50 | 70 | 95 |
| 4 | Impulse withstand voltage | Up [kV] | 75 | 95 | 125 | 170 | 185 |
| 5 | Rated frequency | Fr [Hz] | 50/60 | ||||
| 6 | Rated operating current (40 °C) | Ir [A] | 630/800/1250/1 600/2000/2500/3 150/3600 | ||||
| 7 | Rated breaking capacity | Isc [kA] | 12. 5/16/25/31.5/40/50 | ||||
| 8 | Rated short-time withstand current | Ik [kA] | 12. 5/16/25/31.5/40/50 | ||||
| 9 | Rated short-circuit closing current | Ip [kA] | 31.5/40/50/63/80/100/125 | ||||
| 10 | Rated operating sequence | 0-0.3s-CO-5s-CO | |||||
| 11 | Breaking time | [ms] | 45 | ||||
| 12 | Arcing time | [ms] | 10~15 | ||||
| 13 | Breaking time | [ms] | 55~60 | ||||
| 14 | Closing time | [ms] | 80 | ||||
| 15 | Maximum external size | H [mm] | 640 | 649 | 818 | 730/1060 | 790/1123 |
| W[mm] | 493 | 618 | 730 | 880/955 | 748/805 | ||
| D [mm] | 496 | 496 | 620 | 695 | 833 | ||
| 16 | Pole centre distance | I [mm] | 150 | 210 | 275 | 350 | 280 |
| 17 | Weight | [kg] | 114 | 114 | 119 | 128 | 190 |
| 18 | SF6 gas absolute pressure | [kPa] | 380 | 380 | 380 | 380 | 450 |
Overall Outline Drawing
|
Q: Could I have prices of your products?
A: Welcome. Please feel free to send us inquiry here. We will reply you within 24 hours.
Q: Can I get a sample before the bulk order?
A: Yes, we welcome sample order to test and check quality.Mixed samples are acceptable.
Q: Can we print our logo/ company name on products?
A: Yes, of course, we accept OEM, then need you to provide brand authorization to us
Q:Do you accept product customization?
A:Yes, of course, please provide specific drawings or parameters, we will quote you after evaluation
Q: What is the lead time?
A: The lead time depends on the quantities ordered, generally within 7-20 days after receiving the payment.
Q: What is your Trade Terms?
A: We accept EXW, FOB, CIF, FCA, etc.
Q: What is your payment method?
A: We accept T/T, Western Union, Paypal, irrevocable L/C at sight, etc
Q: Do you inspect the finished products?
A: Yes, each step of production and finished products will be came out inspection by QC department before shipping. And we will provide goods inspection reports for your reference before shipment
Q: How to solve the quality problems after sales?
A: Take photos of the quality problems and send to us for our checking and confirming, we will make a satisfied solution for you within 3 days.
){kind=link}