When this voltage goes above 13.3 Volts for approximately 12 seconds, as happens when the engine is running normally (normal alternator output voltage is approximately 14.4 Volts), it will close the isolator relay providing charging current to the auxiliary battery.
It operates by sensing the voltage on the main 12 Volt system. There are three (3) wires to connect to the delay unit: one from an ignition switched 12 Volt source, a ground and the isolator relay coil. It operates in combination with a conventional continuous duty cycle isolator relay that has been used by a number of vehicle manufacturers. Isolator Relay Delay Offers A New Approach To Charging Batteries In An RV. The unit is fully encapsulated in a plastic enclosure for mounting in the engine compartment with two screws. Intellitec 00-00629-120 Intellitec Battery Isolator Relay DelayE offers a low. The unit is available in both 12 and 24 Volt versions. This allows the use of self-exciting alternators and lets the engine briefly warm up prior to placing the load of a heavily discharged auxiliary battery on the alternator. Chassis Battery Isolator Relay Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts. Unlike diode isolators, this system provides an engine driven alternator with the opportunity to begin charging the main battery before connecting the auxiliary battery. Battery Isolator Relay Delay Delays The Function Of The Isolator Relay When The Coach Is Started 12 VoltIntellitec’s Battery Isolator Relay Delay/E offers a low cost, reliable approach to charging multiple batteries.
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