Hobart 5359D Operation And Maintenance Manual page 52

OM 2012
The rheosl-at (2, Fig. 12) is used to adiust the regu!ated voltage value
of the 3enerafor
OufpiJt.
Compensa! ion for cable sizr is cdjusted by a
potenfiorrctcr (4). Ca!:,k length is compensated for by adiustmcnt c?f
another pstcntiometer (3).
Cable
compensation n;ay be tlrrned ON or GF~:
by a toggle c ,*,\fifch (5).
For this application the switch must ahvc,ys be ON.
An instruction plate under the potentiometer kncbs indicates proper setting
for various cable sizes and lengths. Regulator stabilii-y is adjusted by the
damping circuit gain potentiotmeter (S).
Regulator response time is adjusted
by the da:nping circuit rate potentiometer (IO).
(2) Protecticn .
Intkrnaf circuitry of the voltage regulator is protected by a cartridge type,
5-amcere fuse (12).
(3) Components (See Fig. 12)
Components of the basic circuits are mounted in two maior subassemblies
which are the line drop compensation chassis assembly (6), and the sensing
and pre-amplifier chassir a assembly
(15). Receptacle connectors (7, 9, and
1 I) provide quick connect-disconnect facilities for interconnecting wire
leads. The two subassemblies are mounted
on
a chassis (?a) along with
other main components of the regulator, which include a resistor (l),
voltage adjusting rl-,eostat (2), fuse (12) and fuseholder (13), nineteen-pin,
receptacle connector (14), and reactor (17). Field bcilast resistors and
line drop current transformer loading resistors ore located at a point remote
from the voltage regulator and ore not supplied with the regulator.
The two field ballast resistors are located in the generatcc control tray (iief.
2, Fig. 9). Transformer loading resistox are located on the power module
panel assembly (Ref. 8, Fig. 13).
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Page 28
Aug 25185