Electrostatic powder coating offers itself as a modern and economical process, since it completely automatically provides even the smallest geometries with an even, breakdown-resistant insulation coating which is precise in form.

In our fully automated powder coating system, insulating powder is automatically electro statically applied in the slots and then hardened through induction heating.

Great Performance of Sri Lakshmi Coating Powders

• High cut through resistance temperature (minimum 300°C)
• Excellent edge coverage
• High service temperatures and insulation class
• Capability to provide a range of thermal conductivities
• Outstanding chemical resistance, including motor oil & fuel

Great Manufacturing Productivity:

• Best-in-class shelf –life & bed-life
• High build rate enables faster coating line speed
• Outstanding adhesion to metal and plastics
• Low thickness required to achieve max performance
• Both induction and oven cure chemistries

OUR ASSURANCE

Thanks to our rich legacy of offering supreme quality powder coating solutions, you define your dream project. We enhance and give life with our colourful and artistry expertise.

The purpose of slot insulation

The slot insulation process for electric motors provides a barrier between the copper wirings and the steel lamination for all stator, armature and rotor products. This shielding material separates the rotor’s electrically conductive winding from its body.

What material is slot liner?

The parts for slot coating may be made from any insulating flexible material which is cut and shaped to fit within the slots of the motor or generator. Typically such film or film laminates such as electrical grade polyester, Dacron-Mylar (DMD), Nomex Mylar (NMN) or Nomex-Kapton (NKN) materials are used.

Which material is used as insulator for slots of armature?

Epoxy Coating Powders for Slot Insulation of Motor Armatures

This can be done in two ways:

(1) Using slot liners and plastic casting

(2) Using insulating epoxy coating powder.

 Why is Slot  insulation needed in transmission line?

The Slot insulators in overhead transmission lines are required to withstand both mechanical and electrical stresses.

The mechanical stress is due to the conductor load, wind load, etc. while the electrical stress is mainly due to line voltage and it may cause the breakdown of the insulator.

The pin type slot  insulators are mainly used for the transmission and distribution of electrical power at the voltages up to 33 kV. If the working voltage is greater than 33 kV, then the pin type insulators become too bulky and hence uneconomical.