Industrial Automation Magazine India

Corona Module

Published on : Tuesday 30-11--0001

The micro-controller also monitors the speed of the silicon roller, and switches on the corona when silicon roller starts rotating, and switches off the corona in case roller stops rotating. This avoids the excess treatment to film, which could result in loss of strength and permanent damage to silicon coating of roller. The use of IGBT / MOSFET in power inverter stage gives fault tolerant power circuit which can sustain short circuit on HT side also. The operating frequency of 20 kHz and voltage of 15 kV gives uniform and powerful corona at electrode.

This high frequency supply is fed to a ferrite core transformer for stepping up. The secondary of the transformer is connected to aluminum electrode. The corona is obtained between these electrode and the silicon coated roller.

The operation is very simple and requires no operator attention. Once switched on, the corona automatically starts when silicon roller starts rotating. The corona is again automatically switched off when the roller stops rotating. The status lamp gives various indications for diagnostic purpose.

Features Compact in size Rugged Construction Fully automatic operation Housed in powder coated box High Power output Maintenance free operation Technical Specifications Input Supply 230 volts 1 phase with neutral. Operating Voltage 10 kV to 15 kV Operating Frequency 16 kHz To 22 kHz Power Stage IGBT / MOSFET Display Lamp for Status Panel Control Power on/off Power Control Rotary Switch Protection Over current, over temperature

Beta Computronics Pvt. Ltd.
Phone - 91-712-2227125,
            91-712-2240122