Battery Consumption A
Man-1170EN Rev.01
Additional Boards Installation Manual
22
Appendix A
Battery Consumption
All Additional Boards
The effect of the power consumption of relay boards must be considered when calculating battery standby. Each
board has a quiescent current consumption of 10 mA which will require (24 X 0.01A) + 25% = 0.3Ah of extra battery
capacity per 24 hour standby period. The relays must be able to operate for half an hour at the end of the standby
period so additional capacity of (0.5 X 0.25) + 25% in Ah (0.15) should be added to the required battery capacity to
cover this.
