Find 24kV Indoor HV Load Switch, Load Break Switch, Vacuum Switchgear on Industry Directory, Reliable Manufacturer/Supplier/Factory from China.

Inquiry Basket (0)
Home > Products > 24kV Indoor HV Load Switch > Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker

Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker

Basic Info

Model No.:  YFZN(ZN)-24D/T630-25-G

Product Description



Model NO.: YFZN(ZN)-24D/T630-25-G


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

Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker

Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker

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°



Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker Yfzn (ZN) -24-Small Size Light Weight Vacuum Circuit Breaker



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 Isolating Switch、High Voltage Switchgear. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : 24kV Indoor HV Load Switch

Email to this supplier
  • *Subject:
  • To:

  • *Messages:
    Your message must be between 20-8000 characters