12-slot ceiling fan winding process, including the turns for running and starting coils, and the wire gauge, step-by-step.

Introduction

A ceiling fan is an essential part of every home. They come in various sizes, such as 24″, 36″, 48″, and 52″ fans. Today, we’ll focus specifically on 12-slot fans, which are often found in 48″ and 52″ models. When their winding burns out or gets damaged, instead of buying a new fan, you can bring your existing fan back to life by properly rewinding it.

What is a 12-Slot Ceiling Fan?

As we mentioned earlier, 12-slot coils are mostly seen in 48″ or 52″ ceiling fans. While some fans also have 14-slot coils, today we’ll focus on 12-slot coils. Slots refer to the empty spaces within the fan’s stator where wires are inserted. These slots are evenly distributed and help in creating the motor’s electromagnetic field.

• 12 Table Fan Coil Winding Data –Full Guide with PDF Download

How is Ceiling Fan Coil Winding Done?

To wind the fan, two main coils need to be created:

• • Running Coil (Main Coil)

• • Starting Coil (Auxiliary Coil)

Step-by-Step Process:

Clean the Stator Completely: 

Remove all old wires and thoroughly clean the slots with a brush, making them look as good as new.

Apply Slot Paper:

 Insert 7 number film paper insulation into each slot.

Create Coils: 

Start creating coils for the stator, either by manual winding or using an automatic machine.

Insert Starting Coil: 

First, insert the starting coil into the 12 slots (in an alternate slot pattern).

Insert Running Coil: 

Next, insert the running coil into the remaining 12 slots.

Make Connections: Two wires will come out from the running coil and two from the starting coil. Connect one wire from the running coil and one from the starting coil together to form the common connection. Connect the remaining individual running and starting wires to the two terminals of the capacitor. For the AC supply, one wire will connect to the common connection, and the other will connect to the capacitor’s terminal connected to the running coil (for correct fan rotation).

Insulation and Varnish: After the winding is complete, apply varnish to the winding and allow it to dry.

Starting Coil Winding Details

Starting Coil Winding Details

• • Wire Gauge (SWG): 35 SWG

• • Turns per slot: Approximately 450-460 turns (for each of the 12 slots)

• • Total turns: ~ 5400 – 5520 turns

• • Total wire weight: Approximately 150 – 160 grams

Running Coil Winding Details

• • Wire Gauge (SWG): 35 SWG

• • Turns per slot: Approximately 430 – 440 turns (for each of the 12 slots)

• • Total turns: ~ 5160 – 5280 turns

• • Total wire weight: Approximately 120 – 130 grams

Important Points

• • Resistance Difference: The resistance of the starting coil is higher compared to the running Coil.

• • Capacitor Rating: 2.25 to 2.50 µF (microfarad)

• • Fan Speed: 850 – 900 RPM (Revolutions Per Minute)

• • Supply Voltage: 220V to 250V AC, 50 Hz

Common Mistakes To Avoid

1. 1. While winding, ensure that the running coil and starting coil do not touch each other (to prevent short circuits).

1. 1. Using the correct SWG (Standard Wire Gauge) wire is crucial; otherwise, the fan winding may burn out, and the fan could overheat.

1. 1. Failing to use insulation paper can lead to coil short circuits or body shorts, causing the coil to burn out.

1. 1. Applying varnish is essential; do not skip this step.

Conclusion

If you’re learning ceiling fan winding or performing repairs, follow the data, details, and methods provided above. By using the correct wire gauge, accurate turns, and careful insulation, you can easily wind or rewind a 12-slot ceiling fan and restore its performance to like-new condition.

If u have any questions about us, Please do not hesitate to contact us.