replacement of old ccrs at coimbatore international airport , supply of faa compliant indoor type microprocessor based, air cooled constant current regulator of thyristor controlled electronic type suitable for use on 240v ac, 50hz, input ac supply with below mentioned output power at 6.6 amps with 5 steps variations of current output suitable for local and remote control operationwith 24 / 48 v dc control supply complete with outputcurrent indicated on multifunction digital display, over current, over voltage, earth fault protection and earth leakage meter, positive back indicationequipments relay contactor etc. as required as per specification of following rating. 7.5 kw mpccr at 6.6 amps, supply voltage 240 v ac tapping at 4 kw.