VANNER
Incorporated
OWNER’S MANUAL
Vanner High Voltage Distribution Module OWNER’S MANUAL
15
Installation Instructions Cont'd
Environmental Protection
Your
HVDM
has been designed to withstand intermittent exposure to rain, moisture and direct
pressure spray. However, continual exposure to rain and/or direct pressure spray may reduce the
serviceable life of the unit. Any damage due to water contamination is covered by Vanner only
through the terms of the factory warranty.
Wiring
After mounting the HVDM as outlined above, the shielded high voltage input and Channel 1/Channel
2 output wires may be installed. Reference the "Wiring Input/Output Definitions" section of this
manual for proper identification/location of the input and output studs.
Note:
The HVDM positive and negative studs are staggered and are different sizes to minimize the
risk of reverse polarity connections.
Ensure proper clearances are provided when routing wires within the HVDM enclosure to eliminate
the risk of chafing/abrading the insulation. If proper clearances aren't provided, a short circuit could
occur causing severe damage.
The I/O and HVIL wiring may be installed upon completion of installing the high voltage wiring.
Reference the "Wiring Input/Output Definitions" section of this manual for proper identification of the
pinouts for the I/O and HVIL connectors.
Wire Sizes
The shielded cables connecting the HVDM to the hybrid traction battery shall be appropriately sized
based on the current limiting device between the input and battery.
The shielded cables connecting Channel 1 and Channel 2 outputs to their respective loads shall be
appropriately sized based on the factory installed fuses. 8 AWG wire is recommended as a minimum
for 35A and 50A fuses. 4 AWG wire is recommended as a minimum for an 80A fuse.
Note:
The above wire sizes are for recommendation only. Wire sizing charts should be consulted by
the installer to ensure voltage drop and temperature de-rating factors are taken into consideration.
