
Ferroresonant L-828/L-829 CCR
Description
2009 ADB Airfield Solutions, Incorporated
96A0288T
2-13
All rights reserved
Issued 9/04
The L-828 CCRs (4-30 kW, 6.6 A/20 A) are designed for indoor use only
in an area with adequate ventilation for cooling the constant current
regulator. The environmental operating conditions include temperature
range, relative humidity, and altitude.
Temperature Range
Without monitoring circuitry: -40 to +55
°
C (-40 to +131
°
F)
With monitoring circuitry: 0 to +55
°
C (-18 to +131
°
F)
Relative Humidity
10 to 95% (non-condensing)
Altitude
Sea level to 6,600 ft (2000 m)
L-828 CCRs have the following protection devices:
•
Output open-circuit protection
•
Output overcurrent protection
•
Lightning arrestors on output terminals and bushings
•
Lightning arrestors on input terminals
•
Fuse protection of AC supply voltage of the URC PCB and brightness
control voltage for Remote control
Open-Circuit Protection
The regulator includes an open-circuit protective device to open the
primary switch within 2 seconds after an open circuit occurs in the
secondary. The device resets within 2 seconds after the control switch is
turned off and re-energized, and cannot be tripped by switching the load
circuits or other transients.
Environmental Operating
Conditions
Protection Devices