INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-98-
OUTPUT
ADJUSTMENT
(Range Relay Assy)
TEST POINTS (TP1 is Gnd.)
(Current Limit Assy)
A R4
TP10
B R10
TP2
C R16 TP3
5.
Reinstall jumper W2 on all Current Limit Assemblies if it has been removed. Reconnect all outputs as
shown in Figures 2-2 and 2-3.
4.4.5
LOAD BALANCE ADJUSTMENT
CAUTION
The Load Balance Adjustment should not be made unless an amplifier assembly
has been repaired. Each amplifier has been adjusted at the factory for an output
regulation with a 1500 watt load. 6000L amplifiers are adjusted for -0.37%. All
other amplifiers are adjusted for -1.5%.
The following adjustment procedure is for all power systems except the 2750L-3P, 4500L-3P and 6000L-3P. The
power system must be connected as shown in Figure 2-2. A load resistor, see LOAD RES. in Table 4-1, must be
connected to the phase A,B or C output of the power system.
For the following adjustments, two external AC DVMs must be used. The DVMs must be connected to test points on
the Current Limit Board, A9. The input LO for the DVM is TP1 of the respective Current Limit Board. For all test points
and adjustments, refer to Table 4-2 for the respective power system.
1.
Program the output to the low voltage range and the output to the low voltage range
and the output voltage to 80% of range. Program the frequency to 200 Hz and the
maximum current limit. Apply the LOAD RES identified in Table 4-1 for the respective
power system. Check the voltages listed in Table 4-2. Check that the voltage at the
respective test points are 0.1 volts of the reference test point.
2.
Program the output to the maximum voltage and recheck the Table 4-2 test points. If they differ by
more than +0.2 volts from the reference, readjust the adjustments at this full load current.
Summary of Contents for 2750L-P Series
Page 119: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 115 Figure 6 1 MODULE LOCATION...
Page 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
Page 148: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 144 FIGURE 2...
