CONSTANT CURRENT REGULATOR

IS 12291-1987 FAA AC 150/5345-10: L-828 and L-829 ICAO Aerodrome Design Manual, Part 5

The Constant Current Regulator (CCR) is designed to provide precision control of runway lightning circuits.
These regulators are air cooled and designed for indoor service.

The key features are:

  • Resonant type
  • Thyristor type
  • Air-cooled
  • Ammeter (0.5% accuracy)
  • Regulation + 1% over 0 to 100% load and + 10% to-5% line voltage with no tap changes
  • On – off switching under load
  • Lightning and transient protection: input and output lines
  • Efficiency – 90% minimum
  • High power factor
  • Remote reset capability
  • Output current maintained with 30% open isolation transformer secondaries
  • Open circuit protection
  • Over current protection
  • Soft On/Off
  • Temperature – 40C to +55C
  • Plug -in printed circuit boards
  • Circuit board compatibility with small dry CCR (ET – 6.9)
Brightness
Step
Output
Current (Amps)
Percentage (%)
Light Output
 3-Step5-Step3-Step5-Step
56.6100
45.280
36.64.110060
25.53.48050
14.82.87040