Isolator Relay Delay (IRD)
AUXILIARY BATTERY CARE
Intellitec’s Isolator Relay Delay (IRD) offers a low cost, reliable approach to charging multiple batteries. Unlike diode isolators, the IRD provides the engine driven alternator with the opportunity to begin charging the main battery before connecting the auxiliary battery.
This allows the use of self exciting alternators and lets the engine briefly warm up prior to placing the load of a heavily discharged battery on the alternator.
The IRD ECU is fully potted in a plastic enclosure for mounting in the engine compartment. The ECU operates in conjunction with the Intellitec Silver Can relay, there are just three connections to be made, one from an ignition switched source,an earth, the last being the relay coil.
The IRD senses the voltage on the main battery of a 12 / 24v system, when this voltage goes above 13.3 / 26.6 volts for 12 seconds, the IRD ECU will close the isolator relay, providing charging current to the aux battery.
When ignition is off, the relay opens immediately, should the voltage on the main battery drop below 12 / 24 volts for 2 seconds whilst the engine is running, the relay will drop out, prioritising charging current to the main battery.
Key Features
- Fully potted ECU
- Easy installation
- 12 & 24 volt
- ECU Can be used to control existing systems
Technical Information
| 12 Volt | 24 Volt | |
|---|---|---|
| Maximum Continuous Carry Current | 100 Amps Max | 100 Amps Max. |
| Maximum Ambient Temperature | 85 Degrees C. | 85 Degrees C. |
| Minimum Ambient Temperature | -40 Degrees C. | -40 Degrees C. |
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