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De-energized tap-changer
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De-energized pipe-form and drum-form tap-changer
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De-energized cage-form tap-changer（220KV and below）
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De-energized electric tap-changer
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single-phase linearity tap-changer
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De-energized tray-form tap-changer
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De-energized linearity tap-changer
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WST4 Series de-energized tap-changer
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WSTⅡ5 Series de-energized tap-changer
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De-energized cage-form tap-changer（66KV and below）
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Oil-immersed load switch
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On-load tap-changer
Product details
drum-form (tube -form) tap-changer（horizontal）
De-energized drum-form (tube-form) tap-changer
De-energized tube-form and drum-form tap-changer(WDG,WDG+WLG,WSG series), the specification of the product is with rated voltage of 110kV(the highest voltage for equipment of 126kV)and below, rated current 4000A and below with three-phase parallel operation,1+2 phase or single phase operation. The ways of operation are directly or parallly operated on the cover,at the bottom or side of transformer.
De-energized tap-changer introduction of product model
①TH: Humidity tropical area TA: Exothermic area
②QMF: Airproof (used in linear switch and rotary switch )
③w: Horizontal L: Vertical
④Q: Bell cover installation
⑤XH: Display interface with remote signal
⑥Y: Draw forth for neutral point
⑦X: Electricity within certain limits(designed for large cage-formed )
⑧Z: Metal support (designed for bar-formed)
⑨F: Reverse(designed for bar-formed)
⑩S: Double airproof (designed for tray-formed and bar-formed )
1.Because we have manufactured many varieties of circuit tap-changers, customers are required to down the correct model of the tap-changer If the informnation about the tap-changer you desire in the catalogue is isuficient, Please attach your additional requirements on your order.
2.Customers should be aware while the brief introductions of the whole series of products are not explicit enough, We strongly recommend you to cheek the specifications on the page of the model you desire in the catalogue.
De-energized pipe-type tap-changer
The usage scope and technical features of tube-type tap-changer
This is an new three- phase tube-type tap-changer，it is combined by the body of tap-changer and an operating turning framework, when the transformer is under non-energized state , we can turn over the tap position to change transformer ratio and stabilize output voltage，The single phase and “ 1+2” phase tube-type tap-changer are suitable for installation on vertical direction，but the three-phase tube-type product is suitable for vertical or horizontal installation .
These series of products are specially designed for large or medium oil-immersed power transformer, full hermetically transformer or transformers for specially used , they are frequency normally on 50Hz or 60Hz, and suitable for flat type or bell-type oil tank , its Highest voltage for equipment is up to 252kV and below ,rated current up to 4000A and below.
This product has many technical features and owned a certain of national patent right protection .
(1) Simple and lively appearance ,reliable structure equipped with solid construct pieces .
(2) Light moment , turn over tap position clearly . The product has technical design features as following : body pieces are restricted each other and functioned each other ,you can change the tap position freely and exactly ,compared with the same type of products , it has obvious superiority features.
(3) No conductors and switch cover being equipped on the outer body of product . This is a full hermetially outer insulation screen which can withstand high voltage impulse .so no puncture discharge will rise between the narrow gaps , even if the air gap of the tap-changer is very near the active body of the transformer.
(4) The inner structure of the tube- type tap-changer can be drawn out as a whole part , this helps to installation and maintenance.
Pipe-Type and their cage-form tap-changer technical performance parameter
The equipments and type select of de-energized drum (tube) tap-changer
Equipments of the product
1.Pipe-form switch (radial line) is equipped with operation mechanism, insulation controlling pole, welding flange and seal wash.Drum switch (axis line) is equipped without flange.
2.Pipe-form switch is equipped with an insulation controlling pole of 800mm, and drum switch with a 1200mm one. If you need a longer one, please indicate in the order.
3.The length of drum tap-changer (pipe-form tap-changer) lead is 700mm, user can specify with exceptive requirements.
4.The applicable lead section: 250A - > 70mm* ; 400A →120mm' ; 500A →150mm*; 630A→185mm'; 800A→240mm' ;1000A and up, use twin lead user can specify with exceptive requirements.
5.Insulation methods of lead section: insulation cover of drum switch lead is 500mm, one layer-thickness of the cover for 10 ~ 35kV transformer lead is 4mm, and 66 ~ 110kV 6mm，220kV 10mm. Drum switch is not covered.
Tank' s down-side operation and linkage configuration diagram
Tank' S down-side operation and linkage configuration diagram
The manual landing operation structure diagram
The electric landing operation structure diagram
WDG II series de-energized drum-formed tap-changer
This type of changer is comprised by tap-changer body and operating mechanism, Being adopted by crank principle ，compress spring and ring-type motive contact, They have the merits of reasonable in structure ，operating simply ，location automation，good in handing and contact reliable etc， It is suitable for oil-immersed transformer with frequency of 50 or 60Hz，highest voltage for equipment 40.5kV or 126kV and 252kV，rated current from 200 A to 2500A, The body of tap-changer is fixed on the tanking transformer or on the body of lower part of oil tank, The operating mechanism is located on the tank cover, they must be working under non-energized condition.
New features of drum-formed tap-changer
1、The part of tap-changer body
a、The turning part of the tap-changer is made of new structure ，turning flexibly and small operating moment.It can work normally after the tap-changer is dried with high temperature.
b、The automatic orientation device is made in the switch，after the motive contact is passed through“ dead point', it can orientate by itself and eliminate the position excursion phenomena，This operation makes the tap-changer have strong handle feeling.
C、The direction guiding barrel is added in the switch，when the switch is assembled once again, the operating pole can be inset to the position exactly and conveniently.
2、The part of operating mechanism
a、The flange is fixed with new installation method, the flange on the operating mechanism can turn freely along with the turning angel of the tap-changer body. Adjustment the steps of tap-changer is not required.
b、Only connect rightly to the operating pole using its actual length, it makes assembly more easily.
C、When the tap-changer is turned to the end part of position, the handle pole can not be gone forward and the cover can' t be put on, this will prevent the tap-changer from any fault operation.
WDG II₃ series ( 126kV ) de-energized drum-formed tap-changer
WDG ll₂ Series de-energized drum-formed tap-changer
WDG ll₂ Series de-energized drum-formed tap-changer
Three-phases linear voltage-regulating( |、1△ )pipe-form (g) vertical tap-changer
Three-phases linear voltage-regulating( |、|△)pipe-form (g) vertical tap-changer
“1+2”phases linear voltage-regulating( |、| △)pipe-form (G) vertical tap-changer
“1+2”Phases linear voltage-regulating( |、|△)pipe-form (g) vertical tap-changer
Three-phases linkage single-bridge crossing connection( II )pipe-form (g) vertical tap-changer
Three-phases linkage single-bridge crossing connection( II )pipe-form (g) vertical tap-changer
“1+2”phase linkage single-bridge crossing connection( II )pipe-form (g) vertical tap-changer
“1+2”phase linkage single-bridge crossing connection( II )pipe-form (G) vertical tap-changer
Three-phases linkage single-bridge crossing connection( II ) pipe-form (G) horizontal tap-changer
Three-phases vertical y -△ exchanger ( IV ) pipe (g) tap-changer
“1+2”Phases vertical y -△ exchanger ( IV ) pipe (g) tap-changer
Three-phases double-bridge crossing connection( V )pipe-form vertical tap-changer
“1+2”phase double-bridge crossing connection( V )pipe-form(G) vertical tap-changer
Three-phases series-parallel exchanger ( VI) pipe-form (G) vertical tap-changer
“1+2”Phase series-parallel exchanger (VI) pipe-form (g) vertical tap-changer
Three-phases positive-negative voltage-regulating (VII、VII△ ) pipe-form (g) vertical tap-changer
Three-phases positive-negative voltage-regulating ( VII ) pipe-form (G) verical tap-changer
“1+2”phase positive-negative voltage-regulating ( VI) pipe-form (g) vertical tap-changer
“1+2”phase positive-negative voltage-regulating ( VI ) pipe-form (G) verical tap-changer
Add: 3 Fengming Road, Hairun Street, Sanmen County, Taizhou City, Zhejiang Province, China
Product Sales Hotline: +86-576-83379055
Fax: +86-576-83379155
Weichat: 15157665772
Skype: mercuryzjtz
Email: tl@cntle.com
Web: www.cntle.com
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