ZW32-24 outdoor high voltage vacuum breaker
China ZW32 24 outdoor high voltage vacuum breaker is an outdoor distribution equipment of rated voltage 24KV, 50Hz three phase model, mainly used to break, make the power circuit with load current, overloading current and short cireuit current
China ZW32 24 outdoor high voltage vacuum breaker is an outdoor distribution equipment of rated voltage 24KV, 50Hz three phase model, mainly used to break, make the power circuit with load current, overloading current and short cireuit current, installed in substation, the distribution system of industrial enterprises for protection and control, also suited for agricultural network and where there require frequent operation, and the network equipment to be improved.
The breaker complies with the following standards
GB 311.1 The insulation coordination in high voltage transmission and distribution equipment
GB 1984 High voltage Alternating current circuit breaker
GB 1985 High voltage alternating current disconnector and earth switch
GB4208 Protective level for shell GB/T 11022 General technical requirements for High voltage switchgear and controlgears
DL/T 402 Technical conditions for ordering AC high voltage circuit breaker
DL/T 403 Technical conditions for ordering 12-40.5KV vacuum circuit breaker
DL/T 486 Technical conditions for ordering AC high voltage disconnecting isolator
DL/T 593 General technical requirements for High voltage switchgear and controlgears
DL/T 615 Selection guide for AC high voltage circuit breaker
Jiangsu province power companyNo. 320 (Power equipment delivery and preventive test regulations)
a (Altitude): 2000m
b (Highest ambient temperature): +65℃
c (Lowest ambient temperature): -45℃
d (Sunshine density): 0.1W/cm2[ (wind speed): 0.5m/s]
e (Maxi ambient temperature difference): 25k
f (Maxi wind speed): 35m/s (note: this wind speed is the average within 10min measuring at the height 10m from ground.)
g (Load): (10mm ice cover and 17.5m/s wind speed at same time)
h (Earthquake): (less than 8 degree.)
The China ZW32 24 outdoor high voltage vacuum breaker is three phases constructed in one base, has the advantages of reliable breaking performance, no flammable and explosive risk, safety, free of maintenance, small size, light weight, long working life.
Minimized design, full sealed structure, peculiar arc-extinguishing chamber, good hermetical performance, moistureproof, dew resistant, suitable for working in zone with high ambient temperature and dampness
Three phase column and current transformers adopted foreign epoxy resin for outdoor use, silicone rubber for solid insulation, with the merits of high temperature withstand, anti-aging and resistant ultraviolet radiation.
Small spring operating mechanism，new style，simple，reliable operation，mechani cal endurance more than 10000 times，low energy required to operate，driving mechanism has several parts，directly transfer the operating torque，high reliability.
The CLOSE，OPEN for breaker can be performed by hand or motor and remote control.
Intelligent controller can be added，it provides three-stage current protection，sequence phase protection，reclose，fast breaking and etc protection functions.
China ZW32 24 outdoor high voltage vacuum breaker supports many communication protocol to become network，realize the breaker not only operated locally by hand or remotely control，also via communication protocol it can be operated from other control center.If the breaker installed with reclosing controller or sectionlization controller，the breaker become recloser or sectionlizer.
The China ZW32 24 outdoor high voltage vacuum breaker can assemble two or three CT into two or three phases respectively，the output current is the signal for auto tripping device and intelligent controller，realize over-current protection and measurement function.Generally CT transformation ratio has 200/5，400/5，600/5.As required，the accuracy and ratio for the CT can be determined by user.
Spring operating mechanism fixed into the mechanism box，to avoid the rust，improve the reliability.
The mounting method for breaker is pole standing mounting.
The China ZW32 24 outdoor high voltage vacuum breaker can add isolator，which three phases gang operated，at the OFF position of isolator，the isolating break can be visible easily，the interlock with China ZW32 24 outdoor high voltage vacuum breaker provided，also supporting insulator for surge arrester can be mounted.
MODEL AND MEANINGS
RATINGS OF BREAKER AS SHEET1
MAIN MECHANICAL FEATURES OF BREAKER AS SHEET2
MAIN TE CHNICAL DATA OF ISOLATOR AS SHEET3
CHARACTERIS TICS OF OPERATING MECHANISM AS SHEET4
•Operating mechanism and working theory
Operation of charging energy
Pull the loop by hand to charge the energy, or send a signal to motor, the gear wheel drive cam to rotate, the closing spring is drawn long, when the spring pass by the middle position, the cam will be retained in the position, the breaker ready for closing, meanwhile cam is isolated from driving shaft, to avoid the mechanism from charging energy again.
After finish charging energy, pull the loop to close the mechanism or electricize the closing coil, make closing half shaft to rotate, closing shoulder untied from closing half shaft, the energy release from the closing spring, to drive the output shaft rotating, via radius rod, drive connecting plate and moving contact with arc arc-extinguishing chamber to move upside, contacted with static contact, and it will provide the contacting pressure, and charge the energy into opening spring, keep breaker in CLOSE status.
When China ZW32 24 outdoor high voltage vacuum breaker in CLOSE status, operate to charge energy, the closing spring will be drawn long again, after the spring pass by middle, closing half shaft to be buttoned by interlock device, this is to avoid mechanism from wrong closing.
At CLOSE and energy charged status, the mechanism now under reclosing status, it can realize O-0.3S-C one time of reclosing.
After the breaker closed, pull the loop to open the China ZW32 24 outdoor high voltage vacuum breaker or electricize the opening coil, the closing holding unit untied, mechanism output shaft driven by contacting spring and opening spring to rotate in reverse direction, via driving rod, connecting rod make arc-extinguishing chamber and moveable contact move downside, the breaker opened, the OPEN status retained by opening spring.
For the breaker with current transformers, when the current passing through the main circuit of the breaker exceeds the rated value of CT, secondary winding of CT output 5 A, driving the over-current release to trip the breaker.
when user required the breaker to be added with isolator, the model is ZW32-24G series, outline and dimensions as Figure 2, the isolator can be fixed on the tank of China ZW32 24 outdoor high voltage vacuum breaker by use of bolts and nut, firmly, steadily, easy to be dismantled.
The isolator consists of isolating frame, insulators, insulating pulling rod, blade, isolating shaft, incoming terminal plate, operating handle. The isolating frame fixed on the tank, the blade supported by downward outgoing conductor of the breaker, form the one side of isolating break, operate insulator and driving shaft to open /close the blade, three phase gang operated, when in OPEN position, it form other side of isolating break. It provides the reliable interlock between isolator and breaker to prevent wrong closing, easy maintenance and safety.
Operation sequence for isolator
Closing operation (Power on Operation)
a) Pull the operating handle of isolator, close the blade in position. b) Pull the energy charging handle of breaker, c) Pull closing loop of breaker.
Opening operation (Power off, for inspection and repair)
a) Pull opening loop of breaker, breaker in OFF position b) Pull operating handle of isolator, open the blade in the position
Notices a) It is forbidden close or open the isolator while breaker in CLOSE position b) The isolator shall be switched on/off completely in place, or breaker is not allowed to be opened or closed.
•Installation, Operation and Maintenance
When open the package it shall check the insulating tube is broken or not, nameplate, QC comply with contract or not, packed goods are as packing list specified or not.
Before the breaker put into service, please carefully check the rated voltage and current of each component meet with actual requirement, and it shall commission closing and opening breaker by existing operating methods, to check all index are ok or not.
The China ZW32 24 outdoor high voltage vacuum breaker can be mounted on single pole, mounting holes as figure 1.
The special structure can keep the breaker running free of maintenance for long time, only power frequency withstand voltage test shall be performed every 3-5 years.
The user shall not replace the electric components different from the existing ones.
The operator shall know the performances of the mechanism, and mountings, regulations, maintenance instructions, and shall record the accidents during operating, if necessary, please notify the manufacturer.
Inner secondary wiring diagram and working theory of control system as figure 5 ~7
Note: when SO and S2, S3, S4 short connected, the currenttransformation ratio is 200/5, 400/5, 600/5 respectively.
During ex-works, default is 600/5
(CT transformation rate can be determined by user)
Figure 5 Inner wiring diagram of hand operating mechanism
Zhejiang Brwor Electric Co.. Ltd. was established in 2005, located in Yueqing city, Zhejiang province, China. There is 30 kilometers from Wenzhou airport.
Brwor is specialized in medium Voltage Electrical Equipment, as like C-GIS switchgear, solid insulated ring network cabinet, vacuum circuit breaker, load switches, and others core unit of ring main unit related.
Browr covers an area of 11.565 square meters, with a building area of 11.000 square meters, which is domestic key research and development and manufacturing of high-tech middle voltage switchgear enterprise. The new plant with 33335 square meters will put into use in the ending of 2022. And we have installations of more than 270,000 C-GIS switchgear all over the world(since now main market China).
We make per key part of RUM in our factory and have strict QC process. The process of QC as follows:
Incoming inspection – inspection – process inspection – quality inspection – delivery inspection. There is inspection records for each accessory and contract product,easy inquiry.
Contact with us by email or whatsApp, and inform us the requirements. T/T is optimized, we aks for advance payment and balance should be paid off before shipping usually. L/C is available.
Min. order is 1 set.
RMU is custom made product, we will according to your requirements to make it. The technical question will referred.
Annual output 20,000 units.
we have installations of more than 270,000 C-GIS switchgear all over the world(since now main market China) since 2022 May.
Sea shipping usually. But parts also recommend air shipping in case of urgency.
There are Wenzhou or Ningbo or Shanghai port near our city and will arrange loading after order finish then.
The warranty period is 24 months. “three guarantees policy”,Guaranteed repair, replacement and return due to quality proble.Exceeding the guarantees period, we provide maintenance accessories with discount .After received a request ,we will make a response within 12 hours.In case of overseas after-sales service, we will borne the domestic charge, the foreign part shall be borne by customer (including but not limited to visa, accommodation, travel expenses, staff salary etc.)
The main products are 10/33KV RMU.
Now we have an area of 11.565 square meters plant,and the new plant with 33335 square meters will put into use in the ending of 2022.The number of employees is around 180.
The lead time is 10-25days usually.
We keep kep parts of semi-finished products of RMU in stock usually.
If you’re in need of a quality and affordable circuit breaker, look no further than the trusted supplier China. Our circuit breakers are made to meet or exceed the highest standards in the industry, and our prices are unbeatable.
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