Safety
Manual_Grid_Power_FNC_en_V3_0
10
2.3.2.
Safety Instructions on Charging the Battery System
DANGER!
Danger of explosion due to formation of oxyhydrogen gas!
When the cells are charged, water is decomposed and a hydrogen-oxygen-gas mixture
(oxyhydrogen gas) is formed, which already explodes with low energy input.
Keep any source ignition away from the battery system:
Open flames or fire
Smoking
Glowing embers
Flying sparks during grinding work
Electrical sparks caused by switches or fuses
Hot surfaces with temperature above 300 °C
Electrostatic discharges
Work with electrically insulated tools that do not strike sparks. Ground yourself when working
directly on the battery system.
Make sure that there is adequate ventilation in the container room in accordance with DIN EN
IEC 62485-2, so that the potential explosive gas mixture is discharged.
Note
The following instructions are meant to prevent explosions caused by electrostatic discharges
(Source: ZVEI
– German Electrical and Electronic Manufacturers' Association - Professional
Association for Batteries):
Do not rub batteries with a plastic housing with a dry cloth or one made of synthetic material!
Rubbing plastic surfaces generates electrostatic charge.
Clean the batteries only with a cotton cloth moistened in water. Wiping with a cotton cloth
moistened in water does not generate electrostatic charge.
Wear shoes and clothes that prevent the formation of electrostatic charge on account of their
special surface resistance (see chapter
2.2 Personal Protective Equipment on page 9
Use hand-held lamps with a mains cable without a switch (Protection class II) or hand-held
lamps with a battery (Protection class IP54).
Moisten a label of a battery (with water) before you pull off a label. Pulling off plastic labels
can develop electrostatic charge.
