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1.2.2 External Temperature Compensation (Optional)
As an optional accessory, La Marche offers an External Temperature Compensation for RHF units. Option 11W
includes the compensation circuit and a 24 foot long temperature probe. Option 11Y includes the compensation
circuit and a 100 foot long temperature probe.
The natural voltage of a battery changes as a function of temperature change. As the battery temperature
rises, the effective voltage of the battery decreases. Without Temperature Compensation, the battery charger
will always produce a set constant output voltage. As the battery temperature increases, this constant voltage
will then induce a higher output current from the charger. This higher current can result in overcharging the
battery, which in turn can result in damage to the batteries.
Temperature Compensation combats this overcharging by adjusting the charger’s output voltage based on the
temperature read by the temperature probe. In order to increase the accuracy of the temperature
compensation the external probe can be used to measure the temperature of the battery.
1.2.3 DC Output Fuses
For protection purposes the RHF unit is equipped with two DC output fuses located on the bottom of the unit.
Refer to the image above.
DC Output
Fuses
Ethernet
Port
External Temp.
Probe
Connection
Bottom of the RHF unit
Charger Fail
Alarm Contacts
