Electronics International RSVA-3, Operating And Installation Instructions

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13. Ground Test
VA-1A Installed in the Battery Lead VA-1A Installed in the Battery Lead VA-1A Installed in the Battery Lead VA-1A Installed in the Battery Lead VA-1A Installed in the Battery Lead - With the master on and the engine off, the discharge
light should be on, the Volts position will read 11.9 to 12.5 volts (23.8 to 25 volts for a 24 volt
system) and the Amps position should read -2.0 to -10.0 amps depending on your current load for
the aircraft. Changing the load will change the amps reading.
With the master on and the engine on, all lights will be off, the Volts position will read 13.2 to 14.8
volts (26.4 to 29.6 for a 24 volt system) and the Amps position will read 5.0 to 15.0 amps and
reducing rapidly (shows battery charging current). Changing the load will not change the amps
reading. See the operating section of this manual for further details.
VA-1A Installed in the Alternator Lead VA-1A Installed in the Alternator Lead VA-1A Installed in the Alternator Lead VA-1A Installed in the Alternator Lead VA-1A Installed in the Alternator Lead - With the master on and the engine off, the dis-
charging light will be on, the Volts position will read 11.9 to 12.5 volts (23.8 to 25 volts for a 24
volt system) and the Amps position should read 0.0 amps +/- 0.2 amps. Changing the load will not
change the amps reading.
With the master on and the engine on, all lights will be off, the Volts position will read 13.2 to 14.8
volts (26.4 to 29.6 for a 24 volt system) and the Amps position will read 5.0 to 25.0 amps and
reducing rapidly (shows battery charging current plus load current for the aircraft). Changing
the load will change the amps reading. See the operating section of this manual for further details.
T T
T T Trrrrroubleshooting
oubleshooting
oubleshooting oubleshooting oubleshooting
If your VA-1A or VA-1A-XX has a problem, perform the following troubleshooting suggestions in the
order listed below:
1. Volts Read Incorrectly
Connect only the red and black lead (all other leads must be open). The unit must read correct
voltage on the Red lead. Check for poor connections on the red and black lead. You may have a
problem with the unit.
2. Amps Read Incorrectly
A. Check that the red and black leads have good connections.
B. For a VA-1A (internal shunt unit), connect only one of the shunt leads on the back of the unit to
the bus. (The other lead should be open). The unit must read 00.0 (+/-0.3) Amps.
Installation Instructions
14
12. Ground Test