(3) Re-number and add the following additional combined load condition:
(c) Condition 3. (83-360D only)
AC 36 KW 0.8 PF
Hydraulic: 3,000 psig at 6.5 GPM
Pneumatic: ON, only surge control valve open
c. (Page 2-35) Add Note as follows:
While 83-360D still has the capability of providing 50 amps DC output from the battery
charger in combination with AC, this operation is not recommended. Using normal DC
output procedures, the TRU can deliver 5-7 times the DC with no danger of overloading
and burning out the battery charger. For the 83-360D, DC power output is obtained in
the same way, whether in combination with AC power (1b.) or with no AC power (1c).
Settings in 1c of the table are used.
Section IX. MAINTENANCE OF DC ELECTRICAL AND CONTROL SYSTEMS
a. Master DC Power Control System. (Page 4-160)
(3) Add Note as follow:
On the 83-360D, the generator output is provided directly to the TRU at the line side of
the AC contactor. The TRU output is then connected to the battery charger and controls
as described in the rest of this section.
e. Pneumatic Control System. (Page 4-164) Add the following new subparagraphs:
All AGPUs are equipped with a surge control valve. The surge control valve is used to
bleed off a portion of the GTE compressor output to delay the onset of compressor stall. This
increases the available shaft horsepower for high electrical or hydraulic loads. The surge control
valve is opened when the CURRENT LIMIT SELECTOR switch S11 is set to highest current