Det-Tronics EQP Fire and Gas Detection/Releasing System - Manual (Page 24)

3-5 14.1 95-8533
EQ211xPS, EQ213xPS and EQ217xPS Power Supplies
Refer to Table 3-3A for Power Supply ratings.
Backup Battery
Refer to Table 3-4 or 3-5 to calculate the minimum
size of the backup battery (in amp hours). Select a
sealed lead-acid battery with an adequate amp hour
rating.
NOTE
Connect two batteries in series for 24 volts.
Batteries must be protected from physical damage.
The battery installation shall be adequately
ventilated.
Battery Charger
Use the following formula to calculate the minimum
battery charger size:
CAUTION!
Care should be taken when considering the final
voltage at the device during AC power loss. With
loss of AC power, the device voltage will drop
over time as the batteries lose their charge. If
extended periods of AC power loss are to be
expected, either consider a heavier wire gauge
or specify batteries with higher amp-hour ratings.
Table 3-3A—EQ21xxPS Power Supply Specifications
Minimum = Alarm Current + Total Amp Hours
Charge Rate 48
Characteristic
Power Supply
EQ2110PS/EQ2111PS EQ2130PS/EQ2131PS EQ2175PS/EQ2176PS
Input Voltage 120 vac 120/208/240 vac 120/208/240 vac
Input Current 4 Amps 11/6/6 Amps 24/15/12 Amps
Input Frequency 60 Hz – EQ2110PS 60 Hz – EQ2130PS 60 Hz – EQ2175PS
Input Frequency 50 Hz – EQ2111PS 50 Hz – EQ2131PS 50 Hz – EQ2176PS
Supply Rating 10 Amps 30 Amps 75 Amps
Maximum Alarm Current 10 Amps 30 Amps 75 Amps
Maximum Standby Current 3.33 Amps 10 Amps 25 Amps
Recharge Current 6.67 Amps 20 Amps 50 Amps
Minimum Battery Capacity** 40 AmpHours 120 AmpHours 300 AmpHours
Maximum Battery Capacity 100 AmpHours 300 AmpHours 750 AmpHours
Maximum Deluge Standby Current* 1 Amp 3 Amps 7.5 Amps
*Only applies to 90 hour back-up applications.
**Use a battery with a maximum charge rate that exceeds 25% of the rating of the power supply.