Operation Guide > PowerSafe
®
PV Bloc <
7
2.2 Discharging
As a rule, installations will be equipped with a regulator whose voltage threshold values will protect against deep discharge:
Discharge
10h
120h
240h
Low voltage alarm per cell
1.92
1.92V
1.95V
Disconnect voltage per cell
1.80
1.85V
1.90V
2.3 Setting Charging Voltages
In order to ensure optimum recharge, the following setting charge disconnect and restart voltages can be applied:
Temperature
-20 to 0ºC
0 to 20ºC
20 to 35ºC
> 35ºC
Low recharge-restart voltage
(Vpc)
2.35V
2.30V
2.30V
2.25V
High recharge-disconnect
voltage (Vpc)
2.55V
2.45V
2.40V
2.35V
3 MAINTENANCE CHECKS DATA RECORDING
PowerSafe
®
PV blocs are VRLA batteries and do not have to be topped up.
• Do not open the valve. Opening could cause lasting damage to the battery and is prohibited.
• The containers and lids should be kept dry and free from dust. Cleaning must be undertaken with a damped cotton
cloth without additives and without manmade
fi
bres or addition of cleaning agents, never use abrasives or solvents.
Avoid electrostatic charging.
• Every 6 months, check total voltage at battery terminals and battery room temperature.
• Keep a logbook in which the measured values can be noted as well as time and date of each event like discharge
tests
etc.
