Zw32-24kv High Quality and Good Price Series Intelligent Type Outdoor High Voltage AC Vacuum Circuit Breaker

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Manual Type and Energy-Storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Model NO.: ZW32-24
• Type: Circuit Breaker
• Function: Break Load Current, Over-Load Current
• Certification: ISO9001-2000
• Altitude: <1000m
• Ambient Temperature: -40oc ~ +45oc
• Wind Speed: 34m/S
• Wind Pressure: 700PA
• Transport Package: Export Box
• Trademark: DGG
• Origin: China
• HS Code: 8504311000
• Production Capacity: 100000PCS/Year

Product Description

PHOTOS OF PRODUCT

GENERAL
 

In recent years, with the continuous expansion of the urban power grid and the rapid growth of power load in China, and in view of the characteristics of long power supply lines and large line loss of rural power grid, the original 10kV voltage distribution has been difficult to meet the power supply requirements, and gradually exposed its weaknesses such as excessive power supply distance, high line loss rate, and difficult to meet the requirements of voltage quality. The use of a 20kV voltage level power supply has a series of advantages, such as increasing power supply capacity, ensuring voltage quality, reducing power loss of the grid, and saving the construction cost of the grid.

Therefore, it is an inevitable trend and imperative to adopt a 20kV voltage starting level for the power supply. ZW32-24 series intelligent outdoor high-voltage AC vacuum circuit breaker is an outdoor switchgear with three-phase AC 50Hz and rated voltage of 24kV, which is suitable for opening and closing various loads of different properties and frequent operation occasions, as well as for the construction and selection of power equipment in the urban power grid, rural power grid, mines, and railways. This product does not pollute the surrounding environment, and it is the requirement of green and environment-friendly circuit breakers in line with GB/T1984-2014 High Voltage AC Circuit Breakers, DLT402-2007 Technical Conditions for Ordering High Voltage AC Circuit Breakers, DL/T 403-2000 Technical Conditions for Ordering 12k-40.5kV High Voltage Vacuum Circuit Breakers and other standards.

MODEL DESCRIPTION


USAGE: ENVIRONMENTAL CONDITION

1. Altitude: ≤ 1000m, If the altitude is higher than 1000m, the rated insulation level shall be corrected accordingly.
2. Ambient temperature: -40^oC ~ +45^oC, Daily average temperature change ≤ 25ºC
3. Wind Speed:  34m/s 
4. Wind pressure: 700Pa
5. Pollution level: IV level
6. Icing thickness: Not more than 10mm 
7. Atmospheric Relative Humidity: Daily average ≤ 90%, Monthly average  ~ ≤ 90% 

MAIN TECHNICAL PARAMETERS
 
5.1 Circuit Breaker's Main Technical Parameters Table

S/N	Name			Unit	Data Value
1	Rated Voltage			kV	40.5
2	Rated Current			A	1250/1600
3	Rated Frequency			Hz	50/60
4	Rated Insulation Level	1 min. Power Frequency Withstand Voltage	To earth, fracture(wet)	kV	50 / 64
			To earth, fracture(dry)		65 / 79
			Secondary Circuit to earth		2
			To earth, fracture		125/145
5	Rated Short-circuit Breaking Current			kA	20	25
6	Rated Short-circuit  Closing Current (Peak Value)				50	63
7	Rated Short-time Withstand Current				20	25
8	Rated Peak value Withstand Current				50	63
9	Rated Short-circuit Breaking Current - Breaking times			Times	30
10	Rated Short-time Continuous Time			s	4
11	Rated Operating Voltage and Auxilliary Circuit rated voltage			V	0 - 0.3s - C0 - 180s - CO
12	Rated Operating Order				30
13	Rated current of overcurrent release			A	5
14	Mechanical Life			Times	10000
15	Weight		Without isolating force	kg	115
			With Isolating force		138

 

5.2 Circuit Breaker's Mechanical Properties Adjustment Parameters

S/N	Name	Unit	Data Value
1	Contact Spacing	mm	12 ± 1
2	Contact Overtravel		3 ± 0.5
3	Center distance between phases		380 ± 1.5
4	Three-phase Opening and Closing Asynchrony	ms	≤ 2
5	Contact Closing Bounce Time		≤ 2
6	Closing Time		25 ~ 45
7	Opening Time		25 ~ 45
8	Average Opening speed	ms	1.0 ~ 1.4
9	Average Closing speed		0.6 ~ 1.0
10	Resistance of main electrical circuit	μΩ	≤ 100

 

OUTLINE AND INSTALLATION DIMENSION