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Liaoning Jinli Electric Power Electrical Appliance Co.,Ltd

Manual Cage Off Load Tap Changer

Manual Cage Off Load Tap Changer Tap changers can be on load or off load. On load tap changers generally consist of a diverter switch and a selector switch operating as a unit to effect transfer current from one voltage tap to the next. It was more than 60 years ago on load tap changers were...

Product Details

Manual Cage Off Load Tap Changer

Tap changers can be on load or off load. On load tap changers generally consist of a diverter switch and a selector switch operating as a unit to effect transfer current from one voltage tap to the next. It was more than 60 years ago on load tap changers were introduced to power transformers as a means of on load voltage control. Tap changers possess two fundamental features: (a) Some form of impedance is present to prevent short circuiting of the tapped section, (b) A duplicate circuit is provided so that the load current can be carried by one circuit whilst switching is being carried out on the other. 

The tap-changer will help to stabilize grids with limited short-circuit power, allow renewable energy to be integrated into grids without expensive grid reinforcement, increase the operating efficiency of electricity grids, stabilize industrial processes, reduce energy costs in the operating environment and simplify the cost-effective connection of wind farms and solar parks in compliance with the grid code. The tap changer will allow the transmission ratio and therefore voltages to be dynamically modified to stabilize grids.

Model Explanation
 WSL□ □/□-□╳□ □
    W:  off-circuit
    S :  three-phase
    L :  cage type
    □:  voltage regulation model  
    □:  rated current
    □:  rated voltage
    □:  number of tapping heads
    □:  number of tapping position
    □:  L for vertical ; W for horizontal
    D for top tank installation; WD for bell-type installation  

Voltage Regulation Model
    I  :  linear regulating
    II :   central point
    III :  neutral point
   IV :  Y-△ conversion
   V :   series-parallel connection
   VI:   positive and negative regulation         

Samples Technical Data

Model No.

Voltage regulating

Installation dimension( mm )

Power frequency withstand voltage

(KV/1min)

L1

L2

L

Md

To earth

Inter phase

Inter contact

WSLⅡ 200~630/10-6×5~10×9  D

Central point

150

110

480

200A:Md=M12;400A:Md=M16;630A:Md=M18

45

45

18

WSLⅢ 200~400/10-5×5~10×10  D

Neutral point

150

110

480

WSLⅡ 200~630/35-6×5~10×9  D

Central point

210

170

650

95

95

30

WSLⅢ 200~400/35-5×5~10×10  D

Neutral point

210

170

650

WSLⅡ 200~630/66-6×5~8×7  D

Central point

380

240

953

140

140

45

WSLⅢ 200~400/66-5×5~8×8  D

Neutral point

380

240

953

140

95

30

WSLⅡ 200~630/110-6×5 D

Central point

470

400

1370

230

230

55

WSLⅢ 200~400/110-6×6  D

Neutral point

470

400

1370

230

140

45

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