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Transformer Coil Winding Machine

There are different transformer coil winding machines in different capacity and configurations.

Semi-automatic Coil Winding Machine (with Wire Traversing Device)

This transformer coil winding machine is suitable for winding HV coils in round or rectangular shape for 30-2500kVA distribution transformers.

It consists of main winding device, auto wire traversing device, interlaminar insulation feeding device, tension-adjustable wire pay-off stand, pneumatic system, PLC & servo control system, etc.

This machine is of high automation, complete functions, and powerful dynamic force. It can promise the axial tightness and latitudinal compactness and so it is especially suitable for winding rectangular coils.

1. Max. coil outer diameter: less than 600mm
2. Axial height: less than 700mm
3. Diagonal length of rectangular coil: max. 1000mm
4. Weight of coil: max. 500kg
5. Suitable wire: flat wire max. 3x12mm; lacquered round wire diameter 0.3-3mm
6. Winding speed: 0~200rmp

Fully-automatic Coil Winding Machine (with Auto Insulation Applying)

This machine is specially designed for winding high voltage coils with an automatic conductor guidance and interlaminar insulation paper application. It is fully automatic.

Technical Data

No. Item Data
1 Machine function
1.1 Center height 850mm
1.2 Suitable max. coil width Max. 800mm
1.3 Suitable coil OD 700mm; ID:80mm
1.4 Main spindle torque 800N·m
1.5 Main spindle speed Standard 0-210rpm (max. 0-370rpm)
1.6 Main spindle motor power 3kW
1.7 Main spindle length 900mm
1.8 Servo motor guiding stroke 800mm
1.9 Conductor guiding method Ball screw + linear guide + servo drive
2 Conductors
2.1 Round wire 0.6-4.5mm
2.2 Flat wire 1 x 12mm
3 Interlaminar insulation (Two pay-off devices)
3.1 Tensioning method pneumatic
3.2 Insulation paper width 10-20mm
3.3 Insulation applying method Both left & right sides, servo drive
3.4 Insulation paper reversing Servo driving

Fully Automatic Multiple Coil Winding Machine

This is a fully automatic coil winding machine that has been specially designed for winding primary coils used in voltage transformers of less than 110kV and when winding the primary coils of 110Kv or less, one at a time. When winding primary coils for 35kV voltage transformers, two or three coils will be wound simultaneously, with a maximum ability of winding 9 coils at a time. It is also suitable for distribution transformer coils.

Technical Data

No. Item Data
1 Suitable enameled wire diameter 0.08-0.3mm(SWG 26~40)
2 Wire ordering pitch 0.08-5mm
3 Wire ordering resolution ratio 0.001mm
4 Space between each coil 4mm
5 Winding turns 1-99999±1
6 Single coil width 40-160mm
7 Single coil weight ≤7.5kg
8 Suitable coil OD Max. Φ190mm
9 Insulation material Paper or film, width 350mm, OD max. 300mm, ID 76mm, max. weight 10kg
10 Max. spindle speed 800rpm (@5kg x 2); 600rpm (@7.5kg x 2)
11 Main spindle OD 32mm (with pads for 5 sizes OD)
12 Main spindle driving motor power 3kW
13 Wire guiding servo motor power 3.5kW
14 Machine dimension About 2500 x 2580 x 1840mm

Horizontal Coil Winding Machine with Flexible Compacting Device

This kind of horizontal coil winding machine is used for winding coils of big capacity transformers and reactors from 5 tons to 35 tons!

This machine can be equipped with vertical and horizontal compacting device and so the windings will be more compact and even, ensuring the quality of winding coils.

Applied with advanced electronic counter which can count both positive and reverse turns, our equipment also comes with power-off memorizing function.

Main Technical Data of Horizontal Coil Winding Machine

Parameters WRJ-5 WRJ-10 WRJ-15 WRJ-20 WRJ-25 WRJ-35
Max. load (T) 5 10 15 20 25 35
Max. coil diameter (mm) 1500 1800 2000 2800 2800 3000
Chuck diameter (mm) 750 1000 1400 1800 1800 2000
Distance between chuck and tail (mm) 3000 3000 3500 4600 4600 4600
Height of main spindle (mm) 1200 1400 1600 1800 1800 1800
Stroke of tail stock (mm) 2000 2000 2000 2600 2600 2600
Turning range of compacting device 35°
Stroke of compacting head (mm) 500 750 750 750 1040 1040
Speed of main spindle (r/min) 0~10 0~10 0~10 0~10 0~10 0~7
Max. vertical compacting force (kgf) 120 160 160 160 160 160
Max. horizontal compacting force (kgf) 250 300 300 300 300 300
Max. torque (N.m) 8000 15000 2000 25000 30000 40000

Vertical Coil Winding Machine

This machine is special for winding coils for high voltage and super high voltage transformers. The chuck can raise/drop according to the height of coil so as to keep the working height.
This machine is inverter control, with stable start-up, low noise and easy operation.
It is equipped with electronic counter which can reduce turns when reversing.
It can automatically stop at pre-set turns.

Main Technical Data of Vertical Coil Winding Machine

10T 20T 25T 30T
Chuck diameter mm ф1500 ф2900 ф2200 ф2800
Max. turning diameter mm ф2200 ф3000 ф3400 ф3500
Chuck elevating stroke mm 2200 3000 3000 3500
Max. bearing weight T 10 20 25 30
Max. torque N.m 9000 15000 16500 23000
Chuck rotating speed r/min 0~10 0~10 0~10 0~10
Chuck elevating speed m/min 0.5 0.5 0.5 0.5
Covering plate stretching speed m/min 2.5 2 2.5 2.5
Covering plate stretching range mm ф680~ф2232 ф1040~ф3040 ф1800~ф3600 ф1800~ф3600
Dimension mm 5086×4586×4263 6500×6000×5020 6856×6356×5020 6856×6356×5020

We can provide any kind of coil winding machines, not only for transformers, but also for other electric apparatus.

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