Esp (Electrostatic precipitator) maintenance insulator/heater/esp field/rapper coil ditels

Cylindrical or conical support insulators are used for the suspension of the collecting electrodes and to provide insulation to the ESP housing. Rapper insulators are used to remove the accumulated dust on the collecting electrodes by hammer rapping (dry type ESP) into a hopper below the electrodes.

Conical Support Insulator

Pin Insulator 

Cylindrical Support Insulator

Shaft Insulator 

Wall Through Bushing Insulator 

Shaft and Insulator heater: These heaters are provided at the shaft and insulator to maintain the temperature above dew point i.e. between 80-120 deg C. If temperature falls below the range as as above there will be a continuous tracking of electrical field over the surface of insulator which will result into damage of insulator and non availability of field for collecting the fly ash.
The above heaters come with pressure die casted IP 55 terminal box. Custom made ESP heaters can also be provided

Hoppers are part of ESP and are located at the bottom of ESP. The function of hopper heater is to heat the hopper so as to
Prevents moisture to condensate from getting collected in it
Removes fly ash from precipitator
Hopper heaters can be provided with reflector plates for efficient heating in the hopper

Magnetic Impulse Gravity Impact Rappers Coils in short know as MIGI Rapper Coils are used in Electrostatic Precipitators (ESP) to transmit strong shearing forces on the Collecting Plates & Discharge Electrode in order to free deposited dust particles, In the rapping process helping to remove even the stickiest dust


Rapping is the process by which electrodes and particles are broken apart by vibrations from the rappers. Often used in electrostatic precipitators, rappers relapse the caked on dust layer which then descends into a hopper.

Hopper are the part of ESP and are installed at bottom of the ESP. Hopper Heaters helps to generate heat inside hopper to avoid moisture to condensate from getting collected in it Removes fly ash from ESP. Reflector plates can be provided for improved performance of hopper heater.