HB-YMT
Airplane Flight Manual
7–50
Description of the Airplane and its Systems
01/00
voltage condition generally occurs because the alternator
has failed in a manner that allows the alternator to produce
higher voltage levels than normal. If this occurs, the VP200
will turn off the alternator field, trigger an alarm and display
the alternator in red.
You can reset the faulted alternator circuit in the same way
you reset any other faulted circuit. Because the alternator
circuit is disconnected, you will shortly get a low-voltage
alarm. When this happens, execute the alternator failure
procedure if you want to load shed.
7.11.10.4
Battery Contactor Fault
If the battery contactor fails, power will be lost on the main
power bus from the battery. The VP-200 detects this loss of
power and automatically switches to the e-bus circuit, which
is powered directly from the battery. When it switches to the
e-bus circuit, all electrical devices are turned off, except those
which have been configured to remain on. The transition
from the main power bus to the e-bus takes about 80ms,
and may cause some avionics to re-boot. (EFIS are buffered
by internal batteries)
The e-bus circuit is protected by a 20A fuse, and the VP-200
limits continuous loads to a maximum of 12A. This allows
intermittent loads like the flaps and trim to operate and not
exceed the current rating of the fuse. A main bus/battery
contactor failure is detected when there is no voltage on the
CU power lug, when there should be. This can be caused by
several things:
1. The battery contactor itself fails in a manner so it can’t
close
2. The cable from the battery contactor to the CU is loose or
not attached
3. The cable from the battery to the battery contactor is loose
Summary of Contents for RV-7A
Page 19: ...Airplane Flight Manual HB YMT 01 00 General 1 13 1 6 Three View Drawing...
Page 42: ......
Page 53: ...Airplane Flight Manual HB YMT 01 00 Emergency Procedures 3 11...
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Page 77: ...Airplane Flight Manual HB YMT 01 00 Performance 5 5 5 3 3 Takeoff Distance...
Page 78: ...HB YMT Airplane Flight Manual 5 6 Performance 01 00 5 3 4 Landing Distances...
Page 79: ...Airplane Flight Manual HB YMT 01 00 Performance 5 7 5 3 5 Climb Performance Takeoff Climb...
Page 80: ...HB YMT Airplane Flight Manual 5 8 Performance 01 00...
Page 81: ...Airplane Flight Manual HB YMT 01 00 Performance 5 9 5 3 6 Table for Setting Engine Performance...
Page 82: ...HB YMT Airplane Flight Manual 5 10 Performance 01 00 5 3 7 Pressure Altitude Density Altitude...
Page 83: ...Airplane Flight Manual HB YMT 01 00 Performance 5 11 5 3 8 Cruising True Airspeed TAS...
Page 86: ...HB YMT Airplane Flight Manual 5 14 Performance 01 00 5 3 10 Crosswind Performance...
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Page 93: ...Airplane Flight Manual HB YMT 01 00 Mass and Balance 6 5 6 4 2 Basic Empty Mass and CG...
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