1. PRODUCT OVERVIEWThe FRZW8 series intelligent outdoor
high-voltage vacuum circuit breaker (hereinafter referred to as the
intelligent circuit breaker) is used for three-phase power systems
with an AC frequency of 50Hz and a voltage of 10-12kV. It is used
for breaking and closing load currents and has functions such as
overload protection, short circuit protection, instantaneous trip
protection, time-limited delay protection, and automatic reclosing.
It can also be equipped with lightning arresters or isolation
switches according to user needs (referred to as "combined
intelligent circuit breakers"). The intelligent circuit breaker has
its own power supply and can be remotely controlled nearby. It is
equipped with CT and PT interfaces to meet telemetry
requirements.
FRZW8 with Electronic PT
FRZW8 with
watchdog
FRZW8B with Intelligent
Controller2. PRODUCT FEATUREThe FRZW8 series adopts a vacuum
arc-extinguishing chamber, air insulation, and is equipped with an
electric spring operating mechanism, which enhances the
arc-extinguishing ability, increases the number of short-circuit
interruptions, eliminates the risk of fire, expolsion, and provides
convenient operation. It is a highly practical product with
excellent performance.The overall structure of this product adopts
a three-phase common box type, with bushing inlet and outlet. The
interior of the box is filled with dry air. The electric spring
operating mechanism is arranged on the side of the box, allowing
reliable use even in harsh environmental conditions.The vacuum
arc-extinguishing chamber of this product is enclosed in a ceramic
shell, with a cup-shaped longitudinal magnetic field contact
structure and copper-chromium contact material, providing excellent
breaking and closing short-circuit current capabilities.This
product is compact in size, lightweight, and aesthetically
pleasing. The vacuum arc-extinguishing chamber and insulation
support bushing are designed to be compact. The outgoing conductive
rod is coated with silicone rubber, making it suitable for harsh
weather conditions and polluted environments.3. SCOPE OF
APPLICATIONThe FRZW8 series outdoor high-voltage vacuum circuit
breaker is designed for use in 50Hz three-phase AC power systems.
It is primarily used for breaking and closing the load current,
no-load current, and short-circuit current of 10kV power grids in
urban areas. It can also be used as a sectional switch for rural
power grids and small-scale power systems. This product is an
oil-free replacement for both urban and rural power grids.4.
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
contactsmm321Weightkg8005. APPEARANCE AND INSTALLATION
DIMENSIONS5.1 FRZW8 DIMENSIONS1. Suspension ring2. Sleeve3. Box
cover4. Enclosure5. Moisture absorption tube6. Nameplate7.
Operating mechanism8. Conductive rod 5.2 FRZW8B DIMENSIONS1.
Static contact head2. Dynamic contact head3. Insulated pull rod4.
Circuit breaker5. Isolation knife holder6. Insulator
pillar6. LEAD TIME:The delivery time is usually determined by
the type and quantity of the product, typically ranging from 15 to
20 days.7. 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 S
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