Product overviewZN85 high voltage vacuum circuit breaker
(hereinafter referred to be circuit breaker) is the
withdrawable type circuit breaker developed by us and is the
indoor switchgear for 40. 5kV power system. It is used for
protection and control of power grid equipment and power equipment
of industrial and mining enterprises. Due to its special
merits, it is suitable for rated voltage frequent operations and in
places with multiple breaking of circuit current.Service
conditions1)Ambient temperature: maximum +40ºC; minimum
-15ºC2)Relative humidity: Daily average RH
≤95%
Monthly average RH
≤90%
Daily average
steam pressure ≤2.2X10-3MPa
Monthly average steam pressure ≤1.8X10-3MPa3)
Altitude: ≤2000 m4)
Seismic intensity: no more than 85) In places without water
dripping, inflammable and explosive hazards, chemical corrosive
gases or violent vibration.Technical specification No.Items
UnitParameters1Rated voltagekV40.52Rated frequencyHz503Rated
insulation levelLightning impulse withstand voltage
(peak)85185 4Rated current A1250,1600,2000, 25005Rated short
circuit breaking currentkA25, 31.5, 406Rated short circuit closing
current (peak)kA63, 80 ,1007Rated short-time withstand current
(4s)kA25, 31.5, 408Rated peak withstand currentkA63,
80,1009Breaking times of rated short-circuit currentTimes2010Rated
capacitor bank breaking current A40011Rated operating
sequence 0-0.3s-CO - 180s-cO12Mechanical
lifeTimes10000About Our CompanyShandong Witry Electric Co., Ltd. is
a professional electrical equipment enterprise located in
Shandong province east of China, integrating R&D,
design, manufacture, supply and export.The main products are
high-voltage transmission and transformation equipment, high
and low-voltage switchgear, cable tray. the products are widely
used in power, metallurgy, chemical industry, machinery, medicine,
mining, textile and other industries. Mission & Vision
Thinking and doing more, make customers do
less.Being more efficient, make customers more
beneficial.Represent with quality, make reputation with
service.Sincerely treat guests, make friends in business.We
are committed to producing only the highest quality products that
meet or exceed our customers' expectations and requirements. Our
goal is to achieve 100% customer satisfaction by delivering the
best products and services on time and defect free. We will achieve
this individually and corporately through tested and proven
processes and controls in our Quality System, and with a
constant focus and effort on continuous improvement.
Our EmployeesOur employees consists of experienced, well-motivated
and dedicated team of engineers, technicians, sales executives and
management staff. Our company has a strong technical team,
all-weather provide convenient fast pre-sale and after-sale service
and detailed engineering technical solutions. Our Equipment
and ManagementOur factory covers an area of 100,000 square meters
and has 18 workshops. The main equipment includes laser cutting
machine, Shearing Machine, automatic ladder edge production line,
high-voltage electrostatic powder spraying production line, etc. It
has more than 100 sets of imported CNC processing equipment and
precision testing equipment.Each process has strict quality control
and processing technology, and the products fully comply with
national standards and IEC (International Electrotechnical
Commission)standards. The company has successfully obtained
ISO9001:2008 quality management system, ISO14001:2004 environmental
management system and OHSAS18001:2007 occupational health and
safety management system certification. /* January 22, 2024
19:08:37 */!function(){function s(e,r){var
a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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