Quick Details
Description
The AB-3S-72.5 Series breakers are recently-developed pole-mounted intelligent vacuum circuit breakers of a new generation, which absorb the advanced domestic and foreign technologies adopted by our company, embody the design concept of being "intelligent, energy-saving, environmentally-friendly and maintenance-free" and comply with the actual conditions of China's power distribution network and the construction requirements of smart grid. These products can be used as switches at the 10kV side of substation and 10kV outgoing line of main transformer as well as pole-mounted switches for power distribution networks. They integrate such functions as measurement, control, protection, communication, fault isolation and network reconfiguration, with high automatic and intelligent degree; they are top choices for equipment of power distribution network automation and miniaturized substations.
This product conforms to IEC60298, GB3906-2006, GB/T 11022-1999, DL/T 593-2006, GB 1984-2003 standards, etc.
Major Technical Parameters are shown below:
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Rated voltage
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72.5 kV
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Rated current
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1,600/2,000/2,500 A
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Rated frequency
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50 Hz
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Rated short-duration (1 min) power frequency withstand voltage
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160 kV
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Rated short-circuit breaking current
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31.5 kA
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Rated short-duration withstand current (4s)
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31.5 kA
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Rated lightning impluse withstand voltage(to earth/break)
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350 kV
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Rated short-circuit making current (peak value)
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80 kA
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Rated short-circuit current breaking times
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20 times
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Operating time
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40 - 60 ms
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Operating voltage
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AC/DC 220 V
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|
Mechanical service life
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>10,000 times
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|
Main circuit resistance
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<85 uΩ
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Using Environment:
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Description
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Unit
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Using Environment Value
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|
Surrounding Air
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Max Temperature
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ºC
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+50
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Min Temperature
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-50
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Max Daily Temperature Difference
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K
|
30
|
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Altitude
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m
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≤2,000
|
|
Solar Radiation Intensity
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W/cm2
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0.1
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Pullution Class
|
|
IV
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|
Icing-Thickness
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mm
|
10
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Humidity
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Average Value of Daily Relative Humidity
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%
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≤100
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Average Value of Monthly Relative Humidity
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≤95
|
|
Earthquake Torelance Ability
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Degree
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≤8
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Founded in October 2001, Yangzhou New Concept Electric Co., Ltd. is a national hi-tech enterprise engaged in the R&D, production, sales and service of intelligent high-voltage switches, with the registered capital of RMB 57.14 million, land area of 78000 and plant area of 20000. It has three intelligent production lines with production capability of 20000 switchgears. Company's annual turnover in 2015 is two hundred million RMB and value of export is 15 million RMB.
Our company supplies switchgears. High quality and favorable price. We're pleased to get your Inquiry and we will come back to as soon as possible. We stick to the principle of "quality first, service first, continuous improvement and innovation to meet the customers" for the management and "zero defect, zero complaints" as the quality objective.
