14.3.4 Batteries.
The batteries of the BALTO COMPACT 4000 are located in the Main Unit. The batteries of the BALTO Modular are
located in the Support Carriage.
Replacing the batteries of the BALTO Compact 4000 can only be performed by a Megger Service Centre. It is
sufficient to ship the Main Unit.
The lifetime of the batteries depends on various factors such as usage, grades of depletion, temperatures, etc. When
it is noticed that current injections are deteriorating, it is necessary to check and replace the batteries.
Although it is recommended that the replacement of batteries of the BALTO Modular is done in a Megger Service
Centre, it can be done by trained personnel. The procedure is as follows :
Remove the Support Carriage from mains power.
Remove the DC Current Generators.
Remove the lever from the Emergency Stop Device.
Remove the Support Carriage cover plate.
Remove a connection from every battery row.
NOTE :
Care must be taken and proper tools must be used to avoid creating short circuits when
manipulating the batteries.
Fig 51:
Support Carriage: Checking the batteries.
Check the voltage of every battery cell. A healthy cell will have a voltage of at least 2.0 VDC.
Battery tightening torque: 3.5 N·m (2.6 lbf·ft)
Before reconnecting a battery row, ensure the battery row voltage matches the ultracapacitor voltage. If the
ultracapacitor voltage is lower (e.g. after replacing battery cells), the system should be connected to mains power
briefly to charge the ultracapacitor voltage to the battery row voltage, to avoid sparks during reconnection.
It is recommended to charge the BALTO System for at least 48 hours a week, even when not in active use.
Regular charging will keep the batteries in good health and increases lifespan.
Store the system at appropriate storage temperatures.
14.4 Power Connectors.
The Power Junction Connectors, as well as the power connections on the test object, must be kept clean.
To clean off dust, use compressed air. Do not use harsh chemicals for cleaning.
Abrasive fleece can be used for cleaning the Power Connector contact surface.
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Maintenance