Operating instructions

FC Operation & Maintenance Guide (20 & 25 Amp)
2.1 Description, Product Features & Application
Stored Energy Systems’ FC chargers are fully automatic battery chargers that automatically recharge
and maintain lead-acid and nickel-cadmium batteries. The chargers offer the following standard
features:
• Constant voltage output
• Electronic current limiting
• Automatic equalize
• True Voltage Sensing (charger senses battery voltage at battery - no extra leads needed)
• Temperature compensation to maximize battery performance and life
• Complete alarm system meeting NFPA 110 (FCA only)
• Input and output circuit breakers
Three features in particular maximize battery performance and life:
• Temperature Compensation - helps ensure that the battery is fully charged at low ambient
temperatures but not overcharged at high ambient temperatures.
• Autoboost - automatic two-rate charge feature operates in response to the battery's current demand
• True Voltage Sensing - automatically compensates for voltage drop in the charging leads
2.2 Upon Delivery
Inspect the charger for damage caused during transit, and report damage to the carrier immediately.
Then contact SENS to determine how best to repair/replace the damaged unit.
2.3 Specifications
Input voltage and frequency
Voltage and frequency are as indicated in the part number and on the serial number label: Possibilities
are 120 volt 60 Hz, 230 volt 60 Hz, 230 volt 50 Hz or 277 volt 60 Hz.
Output voltage
• Standard 12, 24 & 32 volts
• Float voltage adjustable from 90% to 120% of nominal. Boost voltage adjustable up to 15% above
float voltage
Voltage regulation
Temperature-compensated voltage regulation is better than 1% from no load to full load with
simultaneous variations in input voltage of 10% and frequency of 5%
True voltage sensing
The charger always provides the correct voltage to the battery regardless of voltage drop in charging
leads
Current limiting & overload protection