Aircraft Voltage Regulator Troubleshooting

The following applies to plane power r1224 voltage regulators.

Aircraft voltage regulator troubleshooting.

This video provides the basic steps for troubleshooting aircraft electrical system issues including headset noise. Normal readings should be around 14 volts for a so called 12 volt system. The input voltage should be approximately the same as the bus voltage. Which in turn decreases alternator output voltage.

This is because the voltage output of the alternator must greater than the battery voltage or current will not flow into the battery which on its own should produce about 12 8 volts when fully charged. Troubleshooting guide for all single engine externally regulated alternators. Verify both the input and output voltage of the regulator. Voltage regulator troubleshooting tips.

If it does the generator is o k. The voltage on the armature post should follow the throttle. Record aircraft bus voltage. Good grounding eliminates many potential problems.

Aircraft alternators are externally regulated by a voltage regulator sometimes called an alternator controller which is usually mounted either on the firewall in the engine compartment or under the instrument panel. Check the two wires from the generator to the voltage regulator. As such regulator maintenance other than basic adjustments are minimal. If another manufacturer s voltage regulator is installed refer to their maintenance manual.

Generation regulator incorporating gfp the voltage regulator will not be damaged and the gfp circuitry will take the electrical sys tem off line instantaneously precluding air craft wiring or avionics damage. Most aircraft voltage regulators used today are solid state and no longer have the trouble prone contact points and coils. Use the troubleshooting guide for repairs on our aircraft alternators. Check and record voltage of aircraft bus.

These solid state regulators along with glass cockpit warning systems are providing faster but not necessarily better information to the aircraft s pilot and mechanic.