Zhejiang, China
Business Type:
Manufacturer/Factory, Trading Company, Group Corporation
Registered Capital:
500 RMB
Plant Area:
1001~2000 square meters
Management System Certification:
ISO 9001, ISO 14001, ISO 14000, OHSAS/ OHSMS 18001
Average Lead Time:
Peak season lead time: 3-6 months
Off season lead time: 3-6 months
OEM/ODM Service
Sample Available
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Power Distribution, Power Transmission, Isolator manufacturer / supplier in China, offering 33kv/72.5kv/145kv 50Hz/60Hz Outdoor Horizon-Rotating AC Disconnect Switch with 2 Poles and a Horizontal Break for Pole Mounted, 87L 87t Different Protection of out Going Line and Power Transformer by IEC61850 to Scada, 138kv Gis Compact Substation Gas Insulating Switchgear and so on.

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Supplier Homepage Products Substation System and Equipment Others Substation System and Equipment 33kv/72.5kv/145kv 50Hz/60Hz Outdoor Horizon-Rotating AC Disconnect Switch with 2 Poles and a Horizontal Break for Pole Mounted

33kv/72.5kv/145kv 50Hz/60Hz Outdoor Horizon-Rotating AC Disconnect Switch with 2 Poles and a Horizontal Break for Pole Mounted

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Min. Order / Reference FOB Price
10 Pieces US $3,000/ Piece
Port: Ningbo, China
Production Capacity: 10000
Payment Terms: L/C, T/T, D/P
Type: High-voltage
Structure: Double-column Disconnector
Installation: Outdoor High-voltage
Operation: Electric
Grounding Mode: Grounding
Movement Mode: Vertical Rotary Type

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Basic Info

Model NO.
Number of Poles
Single Ground
Turn the Horizontal
Switching Mode
Single Throw-in
Common Model
Structure of Operating
Transport Package
Carton with Wooden
 33kv/72.5kv/145kv 50Hz/60Hz Outdoor Horizon-Rotating AC Disconnect Switch with 2 Poles and a Horizontal Break for Pole Mounted

 1 General
1.1            Designation of type and name
GW5-33KV/72.5KV/132KV type outdoor tripahse high-voltage ,horizon-rotating AC disconnect switch with 2 poles and a horizontal break. (following we called it GW5 Disconnect switch in short)
1.2  GW5 Serial disconnectors match GB1985-2004 High-voltage alternating current disconnectors and earth switches,it satisfy IEC129(1984) High-voltage alternating current disconnectors and earthing switches,and IEC694(1980) ,High-voltage switchgear and controlgear.
1.3  Product use
This product is used to cut off or connect a circuit without any load and to cut off high-voltage circuit with high-voltage electric device to be overhauled such as high-voltage bus, circuit breaker and so on.
1.4  Product characteristics
GW5 Serial Disconnect switch are researched and developed by ourselves in the foundation of producing GW5 for 20 years.  It has the following characteristics:
a.   They have plentiful models and high technical parameters and can applied widely. In addition, they are suitable for high position installation. The main knife not only match manual device (CS17 series), but also match electric device(CJ6).
b.  New contact fingers(U-shape)and bending-formed contactors are adopted, for contact finger and socket, the new current structure and the insulator contact finger spring can supply enough capacity of current.
c.  Full seal structure and oilless bearing are adopted and the transmission shaft , pin are made of stainless .All steel parts and standard parts are ZINC-plated. Seal structure and tinning braided strap can give higher antirust ability to connection socket ,main knife switch conductive tube and earth knife switch tube.
d. The simple dependable mechanical moving way was adopted, the main knife switch increased limited switchin and switchoff to increase the operating credibility of product.
e.   New improved CS171V manual structure gives a higher capability in dust palliative, Watertightness and antirust.
f. Full ZINC-plated steel foundation racks and vertical & level transmission levers are available for users to choose.
1.5  The product usage environment condition
a.       The altitude does not exceed 2000 meters;
b.       The environmental climate is between -50ºC and +50ºC;
c.       The wind press should not be higher 700pa;
d.       The earthquake intensity can not be over 9 degrees;
e.       The thickness of ice should not be exceed 20mm;
f.        Pollution degree of environment should be in , , degree.
g.        The install place should have no easy combustible and explode easily dangerous, the chemistry decay and violent vibration.
2.The product classification and technique parameter
2.1 Classification
2.1.1 According to VOLTAGE :40.5kv,72.5kv,126kv
2.1.2 According to current:  630A,1250A,1600A,2000A.
2.1.3 According to earth switch: earth-free, left earth, right earth and double earth.
2.2  The main technique parameter
Tabe 1
1Rated voltage  kV40.572.5126
2Rated current  A630125016002000630125016002000630125016002000
3Disconnect  witchgPeak withstand current
Short-time withstand current (effective value)       (kA)2031.540402031.540402031.54040
Short-circuit keeping time (S)4
4type earth knifePeak withstand current
Short-time withstand current (kA)10
Short-circuit keeping time  (s)4
5type earth knifePeak withstand current
Short-time withstand current kA40
Short-circuit keeping time
6Short time power frequency withstand voltage (effective value)  (kV)To earth110185260
Break to
7 Lightning impulse withstand voltage(effective value)  (kV)To earth185350550
Break to
8Terminal static  mechanical load (N)horizontal
  Vertical force100010001000100010001000
9  bus-transfer current switching by disconnectors in gis    (A)504100012801600504100012801600504100012801600
10Radio jamming degreeNot more than 2000μV
11Mechanical life3000 times
2.3structure characteristic parameters
Tabe 2
1Rated current630125016002000630125016002000630125016002000
2Break insulating distance at disconnect switch off (≥mm)4006501000
3Insulating distance of conductive part to earth (≥mm)400650900
4Resistance of main circuit   (≤μΩ)20015011590220155120100245170135110
5Tryphase Switchin SYNCHRONISM of main knife≤mm)5812
6Switchin time of distributing deviceCJ6:3.75±1s
7Weight of single pole  (kg)125150160190200240
3. Structure of product
    GW5 Disconnect switch consists of 3 single- pole, operating device and transfer section. Each single-pole is of a  "V" structure which consists of bottom ,bearing seat, support insulator, connector, left & right contactor , earthing static contactor and earth knife switch.
For this disconnect switch, the main knife can not only match CS17 series manual operating device, but also match CJ6G electric operating device.  Earth knife matches CS17 series manual operating device . CS17 series manual operating device is equipped with F9 type auxiliary switch or vacuum auxiliary switch .When manual operating device attach electromagnetic lock, valid electric chain lock will be effected among disconnect switch, earth switch and circuit breaker to avoid mistake operating.
4. Operating principle
  4.1 operating principle for main knife switch
   Operating device of GW5 disconnect switch is connected to the oscillating arm through a vertical transfer lever and connector. Synchronous action of 3-pole can be effected through oscillating arm pulling the 3 separate pole.
 When the device acting, a support insulator is driven to rotate ;another support insulator is driven to rotate through a lever in bottom shelf (leftright contactors are separately fixed on 2 support insulators). Then action of switchin and switchoff of the 2contactors can be effected.
  4.2 Operating principle of earth knife switch
    The 3-pole earth knife are connected by 3-pole transfer lever. Principle axle of operating device is connected to the 3-pole transfer lever through vertical transfer lever ,contactor and a set of space 4-links bar. Switch in and switch off of earth knife can be effected through vertical transfer lever and space 4-links bar when the device acting.
  4.3 Auxiliary switch in operating device is connected to principle axle of device. When action (switch in or switch off), related contact will be opened or closed, Then give signals of switch in or switch off.
 4.4 Mechanical lock-out of main earth knives
   When the main knife and the earth knife both attach manual operating device, Lock-out between disconnect switch and earth switch is effected through interlock board of the device. When closed the disconnect knife, the earth knife can not be closed ;When earth knife is closed, don't close the disconnect switch.   
 5.1 Opening package and check
   Check if quantity of package is right according to packing list before opening package. Contact our company in time if there is anything improper.
   When opening package, check all parts carefully according to packing list. If there is anything wrong, please contact our company , too.
5.3 Checking after installation and debugging
a. switch position for main knife and earth knife should be right
b. Insulator distance of breaks should conform to request in graph 2
c. 3-pole synchronism of main knife should conform to request in graph 2
d. Resistance of main knife circuit should conform to request in graph 2
e. Check if auxiliary switches properly when device at closed position, contact (of auxiliary switch) 1-3, 5-7, 9-11,  ETC,  are normally open contacts; 2-4, 6-8, 10-12,  ETC, are normally closed contacts.
f. When main knives is equipped with electric device ,normal action (open and closed)should be effected at 85% and 110% rated voltage
g. Mechanical lock-out of main knife and earth knife should be right
5.4  Our company can provide full equipped joints and lever that don not need welding.
 6.1 In general cases, this is disconnect switch should be operated when all load of circuit is removed (circuit breaker in open position)
 6.2. When main knife is closed, earth knife can not be closed ;When earth knife is closed ,main knife can not be closed.
  When maintaining or repairing this disconnect switch ,pay attention to :
a. Check if ceramic parts of disconnect switch are damaged, there is any loose at glue position , there is any loose and rusty at all fastening position
b. Measure resistance of circuit and check if there is a big change of it .Check if contacts can contact well.
c.      Check if position of all electric connectors and auxiliary switch is right.
d.   Check if all rotation parts can rotate smoothly. There must not be rustness and jamming.
e.   Check if there is any change of signal of all connectors in second circuit.
f.   If any abnormal happens in operating, manage to solve it and touch the producer as soon as possible.
  If not in use in a long time, place it in ventilated and dry place with a 10-cm -high elevation.
 9.1 Quality certificate
 9.2 Installation and operation instruction for GW5 disconnect switch.
9.3 Installation and operation instruction for CJ6G electric device (if main knife is equipped with electric device, it is in the carton for device)
 9.4. Packing list
One copy of all above documents loaded in a special file packet
   Please note clearly as below
a.      Type specification and quantity
b.     Rated current and rated voltage
c.      Type and request of device to match main knife, type and request of device to match earth knife
d.     Voltage for electromotor, voltage for control coil and pair quantity of auxiliary contacts when using electric operation device.
e.      Pair quantity (main and earth knives) of auxiliary contacts when using CS17 series manual operation device and note clearly if electromagnetism lock should be equipped; Please note clearly for main knife or both main knife and earth knife .It is accepted as auxiliary switch that should be equipped without clearly note (4 open and 4 closed)
f.      Pollution degree of environment : , or degree. It is accepted as degree without clear note.
g.     Form of earthing: earth-free, left earth, right earth and double earth. It is accepted as right earth when noted only as single earth
h.     Earth knife type: type or type knife. It is accepted as type earth knife without clear note.
i.       We can supply steel shelf according to user's request, please note the height
j.       Material for connection board: copper or aluminum .It is accepted as aluminum without clear note.
k.     Other special request except above should be noted clearly when ordering
11. Our company reserve the right of modification about writings and Pictures. If there be a modify, Forgive and don't notify.

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