Battery Charging - Megger BM25 Guia Del Usuario

BATTERY CHARGING

General
It is advisable to fully charge the battery before the instrument is put into
service for the first time. Charging is carried out by external a.c. mains
supply, or by 12 V d.c. supply. A 12 V charging lead fitted with an
automotive cigar lighter plug is available for charging the battery from a
vehicle.Testing is inhibited during charging.
Mains supply re-charging
Mains input recharging requires a voltage within the range 95 - 265 V a.c.,
50 - 60 Hz. Disconnect the test leads and connect the mains supply to the
IEC 320 connector in the charging recess. Confirm that the red indicator
lamp is illuminated. Charging is automatic as soon as the mains supply is
connected. To fully recharge the battery takes about 16 hours. Eight hours
charging (from a fully discharged state) will achieve at least 90% of full
charge. Turn the instrument on and check the battery capacity indicator to
show the state of charge.
12 V d.c. supply re-charging
This method of re-charging should only be carried out if a mains supply is
unavailable as it is slower and less efficient. If using a vehicle as the
charging source, the engine should be running. Observing correct
polarities shown, connect the 12 V DIN socket to the external 12 V d.c.
supply and switch on.
Caution: Applying more than 15 V to this socket will overcharge the
battery.
Leave unconnected
Connect to -ve
12 V DIN socket (Viewed from front of panel)
Battery Charging Notes
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FS1 Mains
Input
Fuse
Connect to +ve
Mains Input
Do not leave battery in a totally discharged state. Frequent
charging to keep the battery 'topped up' will maximise battery life.
Battery charging should be carried out in a dry environment
(the IP54 environmental protection applies with the charging
cover securely closed).
When charging the battery indoors, the area should be well
ventilated.
The battery should only be charged at temperatures in the range
0°C to 40°C.
It is beneficial to continue charging and no harm will occur to the
battery if the charger is left on indefinitely.
If the instrument is idle for long periods, recharge the battery for at
least 24 hours every 6 months. (More frequently if the storage
temperature is >40°C).
FS2 Guard
Fuse
12V d.c. Input
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