description
ZW7-40.5 outdoor high voltage vacuum circuit breaker is used for AC three-phase power system with 50Hz and voltage of 40.5kV, which is used for breaking, closing load current, overload current and short circuit current.
parameters
Technical Information
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Technical Specification |
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Rated voltage |
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40.5 |
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Rated insulation
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Power frequency withstand voltage
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Dry |
kV |
95 |
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Wet |
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80 |
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level |
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Lightning impulse withstand voltage (peak) |
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185 |
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Rated current |
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A |
1250、1600、2000 |
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Rated short-circuit breaking current |
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kA |
20、25、31.5 |
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Rated operation sequence |
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Points -0.3s combined -180s combined |
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Rated short circuit current breaking times |
Times |
≥30 |
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Rated short circuit closing current (peak) |
kA |
50、63、80 |
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Rated peak withstand current |
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Rated short-time withstand current |
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kA |
20、25、31.5 |
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Rated short circuit continuous current |
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S |
4 |
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Average opening speed |
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m/s |
1.5±0.2 |
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Average closing speed |
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0.7±0.2 |
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Contact closing bounce time |
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≤2 |
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Three-phase combined (minute) gate synchronous time difference |
S |
≤2 |
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Closing time |
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≤150 |
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Opening time |
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≤60 |
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Mechanical life |
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Times |
10000 |
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Rated operating voltage and auxiliary circuit rated voltage |
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V
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DC220、110、24 |
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AC220、110、24 |
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DC resistance per phase circuit (without transformer) |
μΩ |
≤100 |
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Dynamic and static contacts allow wear thickness |
mm |
3 |
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Weight |
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kg |
800 |
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Company profile
Zhejiang Xikai Electric Co., Ltd engineers and manufactures medium- high-voltage electric
equipment, components and systems that deliver reliable electric power to homes, industries,
businesses, and institutions worldwide. We are a leader in providing load break switch, vacuum
circuit breaker, isolating switch that enable customers to increase productivity, improve system
reliability and reduce costs.
Our products, services, and solutions are used worldwide for public, commercial, and industrial
power systems. Our products had passed the test at Ministry of Power Industry of PRC and
Electric Power Research Institute of PRC.
As a global manufacture, Zhejiang Xikai Electric Co., Ltd provides a wide range of
forward-looking solutions including Power Systems Protection, Distribution System Reliability
and Power Quality products and services. Through our commitment to research and development,
we continue to develop smart solutions for safe, reliable, environmentally friendly power
protection.
Our products include indoor high voltage load break switch, vacuum load break switch, circuit
breaker; outdoor high voltage load break switch, circuit breaker; high voltage earthing switch;
high voltage isolating switch and fuse.
We offer our customers integrated protective solutions using innovative products combined with
unrivalled service and reliability world wide
