Yfz (ZN) -24 Safe & Reliable Hv Vacuum Circuit Breaker with High Quality
Basic Info
Model No.: YFZN(ZN)-24
Product Description
Model NO.: YFZN(ZN)-24 Operation: Electric Type Arc-extinguishing Medium: Vacuum Poles Number: 3 Function: OVP(Overvoltage Protection) Environment: Indoor Trademark: YF Breaking Capacity: High Voltage Circuit Breakers Speed: High-Speed Circuit breaker Installation: Fixed Type: Circuit Breaker Certification: ISO9001-2000, CE Test Equipment: IEC Standard Origin: Jiangyin Yunfeng, China Product Overview
YFZN(ZN)-24/T630-25 indoor AC HV Vacuum Circuit Breaker with disconnector(disconnector can be also removed and its appearance is similar to the traditional ZN 28 circuit breaker. It is used for the fixed HV cabinet such as KGN and XGN, ect) is applied in the AC 50 Hz network with the rated voltage 24kV. It is a Vacuum circuit breaker with obvious isolating fracture in conformity to GB1984-2003. It can be also applied to the power system as an independent electrical unit for breaking load current, overload current and short-circuit current. The obvious isolating fracture can guarantee the safety of construction personnel working on the HV power grid. It is particularly applied at the site without oilation, free of maintenance and required for frequent operation.
Model Specification
Characteristics
a.small size
b.simple but reasonable structure
c.small operation force
d.reliable performance
e.convenient maintenance
Service Conditions
1.Altitude:2000m;
2.Ambient temperature-25ºC-+ 40ºC;
3.The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be larger than 90%:
4.The ambient air shall not be subject to the obvious pollution such as corrosive or combustible gas and steam;
5.The site without fire hazards and explosion hazards;
6.The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°
Main Technical Parameters
Electrical Parameters of Spring Operation Mechanism Equipped with YFZN(ZN)-24D/T630-25-G Vacuum Circuit Breaker
Permant-magnet Single-phase DC Energy Closing Motor
Contact us if you need more details on Vacuum Circuit Breaker. We are ready to answer your questions on packaging, logistics, certification or any other aspects about with Disconnector、Switchgear. If these products fail to match your need, please contact us and we would like to provide relevant information.
YFZN(ZN)-24/T630-25 indoor AC HV Vacuum Circuit Breaker with disconnector(disconnector can be also removed and its appearance is similar to the traditional ZN 28 circuit breaker. It is used for the fixed HV cabinet such as KGN and XGN, ect) is applied in the AC 50 Hz network with the rated voltage 24kV. It is a Vacuum circuit breaker with obvious isolating fracture in conformity to GB1984-2003. It can be also applied to the power system as an independent electrical unit for breaking load current, overload current and short-circuit current. The obvious isolating fracture can guarantee the safety of construction personnel working on the HV power grid. It is particularly applied at the site without oilation, free of maintenance and required for frequent operation.
Model Specification
Characteristics
a.small size
b.simple but reasonable structure
c.small operation force
d.reliable performance
e.convenient maintenance
Service Conditions
1.Altitude:2000m;
2.Ambient temperature-25ºC-+ 40ºC;
3.The daily average of relative humidity shall not be larger than 95% and the monthly average shall not be larger than 90%:
4.The ambient air shall not be subject to the obvious pollution such as corrosive or combustible gas and steam;
5.The site without fire hazards and explosion hazards;
6.The site that the seismic intensity does not exceed degree 8; the gradient shall not exceed 5°
Main Technical Parameters
Serial No. | Item | Unit | Vacuum Circuit Breaker with Disconnector |
1 | Rated voltage | kV | 24 |
2 | Rated frequency | Hz | 50 |
3 | Rated current | A | 630 |
4 | Rated short-circuit breaking current | kA | 25 |
5 | Rated short-circuit making current | kA | 63 |
6 | Rated peak withstand current(dynamic stability current) | kA | 63 |
7 | Rated short-time withstand current(dynamic stability current)/duration | kA/s | 25/4 |
8 | 1min power-frequency withstand voltage(effective value) to earth, phase-to-phase,vacuum fracture/isloating fracture | kV/kV | 65/79 |
9 | Full-wave lightning impulse withstand voltage(peak)to earth,phase-to-phase,vacuum fracture/isolating fracture | kV/kV | 125/145 |
10 | Main loop resistance | μΩ | ≤80 |
11 | Rated breaking current of single capacitor bank | A | 630 |
12 | Rated back-to-back breaking current of capacitor bank | A | 400 |
13 | Mechanical life | Time | 10000 |
14 | Clearance between open contacts | mm | 12±1 |
15 | Overtravel of contact | mm | 4±1 |
16 | Average opening speed | m/s | 1.1-1.7 |
17 | Average closing speed | m/s | 0.8-1.2 |
18 | Rated contact pressure | N | 2500±200 |
19 | Contact closing bounce time | ms | ≤2 |
20 | Three-phase opening and closing asynchronization | ms | ≤1 |
21 | Inter-pole center distance | mm | 275±2 |
22 | Gross thickness of contact wear | mm | 3 |
23 | Distance between live parts and of phase to earth | mm | ≥180 |
24 | Closing operation torque of vacuum arc-extinguishing chamber | N.M | ≤90 |
25 | Opening operation force of vacuum arc-extinguishing chamber | N | ≤10 |
26 | Rated closing operation voltage | V | ≌220/-110/~100 |
27 | Rated opening operation voltage | V | ≌220/-110/~100 |
Electrical Parameters of Spring Operation Mechanism Equipped with YFZN(ZN)-24D/T630-25-G Vacuum Circuit Breaker
Permant-magnet Single-phase DC Energy Closing Motor
Rated Voltage | Rated Output Power | Normal Operating Voltage Range |
AC/DC 220V | ≤70W | 85%-110% of rated voltage |
Contact us if you need more details on Vacuum Circuit Breaker. We are ready to answer your questions on packaging, logistics, certification or any other aspects about with Disconnector、Switchgear. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Indoor HV Vacuum Circuit Breaker
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