Maintenance
Batteries_Rail_Power_Manual_en02.docx
31
9.1.2.
Measurement of the charging voltage
Target: The charging voltage of the battery is measured and checked.
The measurement of the voltages is used for error detection. Logging the measured
voltages helps here.
DANGER!
When establishing access to the battery system, contact with sharp edges and/or live
components may occur due to the design.
There is an immediate, high-risk hazard which, if not avoided, will result in death or serious
injury.
Measures to avert the danger:
•
Be very careful when carrying out any work on the batteries.
•
Wear personal protective equipment, see
2 Safety instructions on page 9.
Precondition
The battery system is connected to the vehicle's onboard charger and is being charged.
Required tools:
•
Digital Multimeter
•
current clamp
•
contact thermometer
1. Measure the charging voltage directly at the battery with a suitable multimeter.
2. Measure the charging current directly at the battery with a suitable current clamp.
3. Measure the temperature of the battery with a contact thermometer.
4. Check the measured value against the charging characteristic, see
charging characteristics on page 20.
It applies:
Measured Current (I)
Measured Voltage (U)
Batterie
< I50
Float Charge
Higher than I
50
but lower than I
5
Boost Charge
≥ I
5
I-Phase; No statement possible.
Wait until U=const , i.e. until Float- or
Boost-Charging is available.
