Victron energy SmartSolar MPPT 150/35 Manuel page 7

3. Installation
WARNING: DC (PV) INPUT NOT ISOLATED FROM BATTERY
CIRCUIT
CAUTION: FOR PROPER TEMPERATURE COMPENSATION
THE AMBIENT CONDITION FOR CHARGER AND BATTERY
MUST BE WITHIN 5°C.
3.1. General
● Mount vertically on a non-flammable substrate, with the power
terminals facing downwards. Observe a minimum clearance of 10 cm
under and above the product for optimal cooling.
● Mount close to the battery, but never directly above the battery (in
order to prevent damage due to gassing of the battery).
● Improper internal temperature compensation (e.g. ambient
condition battery and charger not within 5°C) can lead to reduced
battery lifetime.
We recommend installing the the Smart Battery Sense option in
case of larger temperature differences or extreme ambient
temperature conditions.
● Battery installation must be done in accordance with the storage
battery rules of the Canadian Electrical Code, Part I.
● The battery and PV connections must be guarded against
inadvertent contact (e.g. install in an enclosure or install the optional
WireBox M).
3.2 Grounding
● Battery grounding: the charger can be installed in a positive or
negative grounded system.
Note: apply a single ground connection (preferably close to the
battery) to prevent malfunctioning of the system.
● Chassis grounding: A separate earth path for the chassis ground is
permitted because it is isolated from the positive and negative
terminal.
● The USA National Electrical Code (NEC) requires the use of an
external ground fault protection device (GFPD). These MPPT
chargers do not have internal ground fault protection. The system
electrical negative should be bonded through a GFPD to earth ground
at one (and only one) location.
● The charger must not be connected with grounded PV arrays. (one
ground connection only)
● The plus and minus of the PV array should not be grounded. Ground
the frame of the PV panels to reduce the impact of lightning.
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