TB 1-1730-229-20-2
Add "Table 4-13a, Generator AC Faults 83-360D Only" as follows:
Faults
Fault Lamp
Indication
Current for CURRENT LIMIT
Protective
Indication
(latched)
SELECTOR Switch Settings
Voltage/
During
After
Action
17KVA
38KVA
59KVA
90KVA
fault
Fault
(50A/∅)
(110A/∅) (170A/∅) (259A/∅)
>50
>110
>170
None (see
None
None
<191
<191
<191
note)
Voltage
Field
UNDER
Normal
excitation
VOLTAGE
(108-118
OVER
>191
>191
>191
>191
removed
after 5
vrms)
CURRENT
after 30
second
seconds
delay
= or <50
= or <110
= or <170
= or <259
AC
None
contactor
>50
>110
>170
Voltage
UNDER
opened
<191
<191
<191
<108 vrms
VOLTAGE
after 4-7
OVER
>191
>191
>191
>191
seconds
CURRENT
AC
Voltage
OVER
None
contactor
>108 vrms
VOLTAGE
opened
AC
UNDER
None
contactor
FREQUEN-
<375 Hz
CY
opened
Note: When voltage is within normal limits and output power is less than 66 KVA, the generator
will continue to operate regardless of the CURRENT LIMIT SELECTOR switch setting. The
GCU will reduce field excitation to reduce generator voltage as current increases above the
selected limit. The voltage will drop below the normal limit (104 4 vac) and the GCU will
open the AC contactor when current exceeds the values listed.
360A Only)"
Figure 4-39a. AC Generator and AC Output Current Transformers (83-360D Only)
A revised figure 4-39 will be added as follows:
(sheet 1 of 3) Legend 1. Replace "AC/DC GENERATOR" with "AC GENERATOR". This
illustration will be changed to delete DC connections and relocate GCU cannon plug connection.
(sheet 2 of 3) This illustration will be changed to delete DC connections and relocate AC
connections.(See Figure C, attached.)
(sheet 3 of 3) A new illustration will be added showing TRU installation in the DC cable bay.
