Victron energy MultiPlus 12 3000 120-50 120V Service Manual page 5

NEVER charge a frozen battery.
•
If necessary to remove battery from vessel, always remove grounded terminal from battery first. Make sure all
•
accessories in the vessels are off, so as not to cause an arc.
• Be sure area around battery is well ventilated. Clean battery terminals. Be careful to keep corrosion from coming in
contact with eyes. Study all battery manufacturer's specific precautions such as removing or not removing cell caps
while charging and recommended rates of charge.
• Clean battery terminals. Be careful to keep corrosion from coming in contact with eyes.
• Study all battery manufacturer's specific precautions such as removing or not removing cell caps while charging and
recommended rates of charge.
MARINE UNIT LOCATION
Locate marine unit away from battery in a separate, well ventilated compartment.
•
Never place marine unit directly above battery; gases from battery will corrode and damage marine unit.
•
• Never allow battery acid to drip on marine unit when reading gravity or filling battery.
• Do not operate marine unit in a closed-in area or restrict ventilation in any way.
DC CONNECTION PRECAUTIONS
Connect and disconnect DC output connections only after setting any marine
unit switches to off position and removing AC cord from electric outlet or
opening AC disconnect.
EXTERNAL CONNECTIONS TO CHARGER SHALL COMPLY WITH THE UNITED
STATES COAST GUARD ELECTRICAL REGULATIONS (33CFR183, SUB PART I).
GROUNDING INSTRUCTIONS – This marine unit should be connected to a grounded,
metal, permanent wiring system; or an equipment-grounding conductor should be run
with circuit conductors and connected to equipment-grounding terminal or lead on unit.
Connections to unit should comply with all local codes and ordinances.
2.2 Connection of battery cables
In order to utilize the full capacity of the product, batteries with sufficient capacity and battery cables with sufficient cross section should
be used. The DC cables must be copper and rated 90ºC (194ºF) See table.
Recommended battery capacity (Ah)
Rated Current
Recommended DC fuse
Recommended cross section (per +
and - connection terminal)
'2x' means two positive and two negative cables.
Recommended cable lugs
size
AWG 1/0 Molex part no. 19221-0240
AWG 2 Molex part no. 19221-0233
Remark: Internal resistance is the important factor when working with low capacity batteries. Please consult your supplier or the relevant
sections of our book "Energy Unlimited", downloadable from our website.
Procedure
Proceed as follows to connect the battery cables:
Use a torque wrench with insulated box spanner in order to avoid shorting the
battery.
Maximum torque: 11 Nm
Avoid shorting the battery cables.
Undo the four screws at the front of the enclosure and remove the front panel.
•
Connect the battery cables: see Appendix A.
•
12/3000/120 24/3000/70
400–1200 200–700
250A 125A
400A 300A
2x AWG 1/0 AWG 1/0
3