Constant current regulators (CCR)
Salient Features of CCR
- Static Thyristor controlled natural air cool type in ratings from 4kW to 70KW
- High efficiency >92% and high power factor >.95, optimizing the wave form and the power factor
- Built in soft start while starting, change of brightness steps and automatic resumption after power restores.
- Dual Over current protection for redundancy towards protection of runway circuit lamps
- Protection to CCR in case of remote control cable fault
- Ambient operating temperature from -40 degree Centigrade to +55 degree Centigrade
- Simple design, sturdy construction and epoxy powder coating paint.
- Remote reset capability
- Output current maintained within the range even with 30% lamps fused.
- Open circuit protection
- Dual Over current protection
- Plug -in printed circuit boards
- Thyristor type
- Air-cooled
- Ammeter (0.5% accuracy)
- Regulation + 1% over 0 to 100% load and + 10% line voltage variations.
Along with these monitoring features it also does the following advanced fault monitoring:
- Loss of ac input power to the CCR
- Shutdown of the regulator due to operation of protective circuits.
- A 10 percent or greater drop in the volt-amperes (VA) delivered to the series circuit.
- Failure of the regulator to deliver the output current that corresponds to the brightness step selected.
- Failure of a preset number of lamps in the series circuit.
