Aircraft Voltage Regulator Troubleshooting

Need help solving an electrical system issue.

Aircraft voltage regulator troubleshooting.

Record aircraft bus 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. If it does the generator is o k. Make sure that when the master switch is on that you have battery voltage of at least 12 or 24 volts on the regulator battery terminal.

Normal readings should be around 14 volts for a so called 12 volt system. If another manufacturer s voltage regulator is installed refer to their maintenance manual. Check and record voltage of aircraft bus. Troubleshooting guide for all single engine externally regulated alternators.

Check the two wires from the generator to the voltage regulator. Most aircraft voltage regulators used today are solid state and no longer have the trouble prone contact points and coils. Good grounding eliminates many potential problems. Voltage regulator troubleshooting tips.

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. Use the troubleshooting guide for repairs on our aircraft alternators. The input voltage should be approximately the same as the bus voltage. The following applies to plane power r1224 voltage regulators.

Verify both the input and output voltage of the regulator. 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. Which in turn decreases alternator output voltage. If the g the kelly aerospace vr2000 offers built in troubleshooting diagnostics to identify elec trical system problems all the while.

The voltage on the armature post should follow the throttle.