Specifications
NRG Speci cations
AC Input
Voltage 110-120/208-240 VAC, +10%, single phase, switch selectable
Input current 10A charger: 6.6/3.3 amps maximum
20A charger: 12.6/6.3 amps maximum
Frequency 60 Hz +
5% standard; 50/60 Hz +5% optional
Input protection 1-pole fuse, soft-start, transient suppression
Charger Output
Nominal voltage ratings 12 or 24 volt nominal
Optional voltage rating 12/24 volt, eld selectable
Battery settings Six discrete battery voltage programs
- Low or high S.G. ooded
- Low or high S.G. VRLA
- Nickel cadmium 9, 10, 18, 19 or 20 cells
Regulation +
0.5% (1/2%) line and load regulation
Current 10 or 20 amps nominal
Electronic current limit 105% rated output typical – no crank disconnect required
Charge characteristic Constant voltage, current limited, 4-rate automatic equalization
Temperature compensation Enable or disable anytime, remote sensor optional
Output protection Current limit, 1-pole fuse, transient suppression
User Interface, Indication and Alarms
Digital meter Switch-selectable meter for output volts, amps
Accuracy +
2% volts, +5% amps
Alarms LED and Form C contact(s) per table:
Constant current charge
High-rate
taper
charge
Maintaining
charge
Finishing
charge
Fast volt limit
Float volt limit
Charger in “fast charge mode”
Transition from fast
charge voltage to
float voltage
Charger in “float mode”
Battery voltage
Transition from current limit
to fast charge voltage limit
Current limit
Front panel
status display
Standard
4-rate charging
1. Alarms “1” available only on 10A charger
2. Form C contact provides summary alarm of these conditions. BBHH
chargers include this alarm con guration. Contacts rated 2A @ 26 VDC resistive
3. Battery fault alarm indicates these fault conditions:
- Battery disconnected - Battery polarity reversed - Mismatched charger
battery voltage - Open or high resistance charger to battery connection
- Open battery cell or excessive internal resistance