| Characteristics of Controller:
Work mode: Start and close lamp use the PV panel voltage as sunlight sensor; light start lamp and close lamp by the setting time. Time calculation uses crystalline oscillator to sure the time control accuracy. 3. to be 24hours work mode. 4. Test mode.
Charging mode: use high efficiency charging way. Boost, recovery and float charging auto work for battery long-life. Use temperature compensation.
Self protection: protection to overload, outside and inside short circuit, reverse connection, thunder and lightning, PV penal reverse current, over charging and discharging, over system voltage, etc.
LED indication on system condition : LED indicating the system of charging, overcharge, power full, power low, over-discharge, over load, out short circuit, load on/off, etc.
Industry level production standard: wide temperature running area -35 to +50
No adjustable hardware part: use flash memory to save all work control point instead of adjustable resistance, to protect the control work point from going off as the adjustable resistance value is easily changed by temperature and vibration, in order to make sure the control accuracy and reliability.
Characteristics of Ballast
Regulate Constance lamp power
Compensate for lamp temperature
Fixed frequency operation
Current mode control
Overcurrent protected
Overvoltage shutdown
Open and short protected
Average lamp voltage zero
Operates over wide battery voltage rang: 20V-32V
Specifications
Type 2418 2435 2450 2470
Controller 100W(max) 150W(max) 250W(max) 350W(max)
Operating voltage area (DC V) 22~30V
Max charging current (A) 4 6 10 12
Temperature compensation 60mV//24V
Boost charging voltage 29.6V
Over charging voltage 28.8V
Float charging voltage 27.2V
Over discharging ret voltage 26.2V
Over discharging voltage 22V
Quiescent power (total) ﹤0.5 Watts
Ballast 18W 35W 50W 70W
Constant power control error ﹤2%(input from 20V to 30V)
Lamp operating voltage(AC) 60V to 100V
Lamp average dc voltage 0V
Lamp start voltage ＞ 3000V for high pressure lamp; ＞450v for low Pressure lamp
Lamp start pre-heating time 3 to 6 mins
Operating temperature -35℃-50℃ Heat spreading way Self cool | 
