1. PRODUCT OVERVIEWFRZW7 series outdoor high-voltage vacuum circuit
breaker is an outdoor high-voltage electrical equipment for dry AC
50Hz and voltage of 40.5kV. It is equipped with a spring operating
mechanism or an electromagnetic operating mechanism, which can be
remotely controlled for electrically opening and closing, or
manually stored for manual opening and closing. The design
performance complies with the "National Standard for AC
High-Voltage Circuit Breakers" and meets the requirements of
IEC-56, the International Electrotechnical Commission standard for
AC high-voltage circuit breakers. The FRZW7 series outdoor
high-voltage vacuum circuit breaker is mainly used for control and
protection in outdoor 35kV power transmission and transformation
systems, and can also be used for normal operation and short
circuit protection in urban and rural power grids and industrial
and mining enterprises. The overall structure of this product is
porcelain bushing type, with a vacuum arc extinguishing chamber
installed in the upper porcelain bushing and a bushing porcelain
bushing in the lower part. It is suitable for places with frequent
operations and has advantages such as good sealing, aging
resistance, high voltage resistance,
non-combustibility, explosion-proof, long service life,
and convenient installation and maintenance.2. PRODUCT
FEATURE2.1 Using vacuum arc extinguishing technology, this circuit
breaker has strong breaking ability and a long electrical lifespan.
The mechanical lifespan can reach 10,000 operations.2.2 The
structure is simple, requiring no maintenance and having a long
inspection interval.2.3 It has excellent insulation
performance and a strong ability to resist pollution.2.4 It
can be equipped with a spring or electromagnetic operating
mechanism, ensuring reliable mechanical performance and frequent
operations. There is no risk of fire. It is equipped with internal
current transformers, achieving a precision level of 0.2 and
enabling three-phase interlocking protection.2.5 It includes a
condensation control device, ensuring reliable operation of the
circuit breaker under certain temperature and humidity
conditions.3. PARAMETERSNO.ITEMUNITVALUE1Rated voltagekV40.52Rated
insulation levelPower frequency withstand voltageDry typekV95Wet
typekV80Lightning impulse withstand voltage (peak)kV1853Rated
currentA1250,1600, 20004Rated short-circuit breaking
currentkA20, 25, 31.55Rated operating
sequence Opening-0.30
closing/opening -180 closing/opening6Rated short-circuit
breaking current frequencytimes127Rated short-circuit closing
current (peak)kA50, 63, 808Rated peak withstand currentkA50, 63,
809Rated short-time withstand
currentkA20, 25, 31.510Rated short-circuit duration
currents411Average opening speedm/s1.5±0.212Average closing
speedm/s0.7±0.213Contact closing bounce times≤214Three-phase
closing (opening) synchronization time differences≤215Closing
times≤15016Opening times≤6017Mechanical lifetimes1000018Rated
operating voltage and auxiliary circuit rated voltageVDC/AC220,
110, 2419DC resistance per phase circuit (excluding
transformers)μΩ≤10020Allowable wear thickness of dynamic and static
contactsmm321Weightkg8004.APPEARANCE AND INSTALLATION
DIMENSIONS5. LEAD TIME:The delivery time is usually determined
by the type and quantity of the product, typically ranging from 15
to 20 days.6. WHY CHOOSE US?1), Innovation StrengthFenarro has a
professional research and development team consisting of over 30
technical engineers. The production design incorporates advanced
international technology and is equipped with updated equipment
systems. It follows the highest international standards for
experiments and has invested over 30 million US dollars in research
and development expenses.2), Quality ControlFenarro has over 40
professional testing equipment, 5 production lines, and 2
measurement centers, with strict quality control processes in place
to ensure that our products meet international certification
requirements.3), Quantity and ProductivityFenarro has six workshops
and nearly 230 well-trained employees, with the help of modern
automated production lines, our annual production capacity is
150,000 sets of equipment.4), Our ServiceI). By promptly addressing
customer inquiries and concerns, we provide a quick response during
the pre-sales period to secure the orders and achieve success in
the B2B realm.II). Our service is synonymous with excellence
throughout the production process. We pride ourselves on our
meticulous attention to detail, our team of experienced
professionals, effective communication, and unwavering commitment
to timeliness.III). Our team of experts is dedicated to solving any
issues that may arise after your purchase. We pride ourselves on
our prompt and effective communication, ensuring that you are
always kept in the loop and informed of any updates or
progress.IV). The essence of our warranty program lies in its
ability to instil confidence in our customers. By providing a lon
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