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EA42-7
3
2. WIRING
2.1 Exciter Fileld Power Circuit
● Connect reg wire to the brushless exciter
field F+ terminal, and the
– wire to the field F-
terminal. Refer to Figure 5.
● If the exciter field resistance is less than 6 ohms,
and if the full-load field current does not exceed
the maximum continuous current rating of the
regulator ( 7 Adc), a resistor of sufficient wattage
must be added in series with the field to bring the
total resistance to 6 ohms.
CAUTION !
The DC resistance of the exciter field must be equal to
or greater than 6 ohms and less than 100 ohms.
2.2 Power Input
Connect wiring as shown in Figure 5. Power for the
regulator is derived from the generator auxiliary
winding, connected to wires 3 and 4. The operable
power input range is 171 ~ 264 VAC.
2.3 Sensing Input
For sensing, wires U and V are connected to the
generator phase U and phase V respectively. Wires
X and Y are connected to the opposite ends of the U
and V phase coils, or commoned together at the
Neutral (star) point.
2.4 Quadrature Droop Input
When paralleling is required, a current transformer
(C.T.) and variable burden resistor (rheostat) should
be connected to terminals A and B. The ratio of the
C.T. and the maximum value of the burden must be
chosen so that at maximum current the voltage
applied to terminals A and B does not exceed 5 VAC
rms. A suitable value of burden would be a rheostat
adjustable from 0~5 ohms (10 Watts) for a C.T. with a
1 Aac secondary current at full load. These terminals
may either be linked or left open when paralleling is
not required.
2.5 Fuses
It is recommended that a fuse or fuses with high
interruption capability be installed per ther
interconnection diagram. A suitable fuse type would
be LittlefuseTM type 3AG, rated 250 VAC, 6,3 A,
“SLOBLO”. Dimensions are 6.3 mm
32 mm (1
1/4
M
1/4
M
).
NOTE :
Fuse(s) MUST be installed per interconnection
diagram to avoid interrupting field current directly.
2.6 Voltage Adjust Rheostat (V)
● An internal screw-driver pre-set (V) provides
coarse adjustment of generator output voltage.
Adjustment of V clockwise increases voltage.
MOUNTING
The regulator may be mounted on the
generator in any convenient position.
Refer to outline drawing Figure 2-1.
Figure
2-2
provides
the
drilling
template.
NOTE !
The ground terminal must be bonded
either to a metal ground by the
mounting screw or by means of a cable
to the most suitable earthing point
available close to the requlator.
Outline Drawing
Figure 3