INSTRUCTIONAL MANUAL
2750L-P/4500L-P/6000L-P
August, 2001
Rev. K
-20-
2.5 OUTPUT
CONNECTIONS
The output terminal block, TB1, is located at the rear of the power system. For a single power source power system, all
load connections must be made at TB1. The external sense inputs allow the power system output voltages to be
monitored directly at the load and must be connected. The external sense wires are connected at J6 on the rear panel.
Refer to Figure 2-2 for all connections.
The output power cables must be large enough to prevent a voltage difference greater than 2 VRMS between the
voltage at TB1 and the voltage between External Sense HI and LO input. Table 2-1 shows the maximum length of the
output wires. The table assumes the External Sense input is connected at the load.
Table 2-1
MAXIMUM LENGTH OF OUTPUT WIRES
WIRE
GAGE (AWG)
MAXIMUM LENGTH (ft) OF WIRE BETWEEN OUTPUT (HI) AND LOAD
14
12
10
8
MAX LENGTH (ft)
=
2/(MAX CURRENT PER PHASE X 0.0027)
MAX LENGTH (ft)
=
2/(MAX CURRENT PER PHASE X 0.0017)
MAX LENGTH (ft)
=
2/(MAX CURRENT PER PHASE X 0.00111)
MAX LENGTH (ft)
=
2/(MAX CURRENT PER PHASE X 0.00061)
For a single power source, 1-phase power system the output power is available on TB1, pins 3 and 4.
The External Sense inputs must be connected or an AMP FAULT error message will be shown on the display and
reported through the external interface.
Refer to Figure 2-2 for all multiple power source power system hook-ups.
NOTE:
A special hook-up is required for all multiple power source power systems with the MODE Option.
Refer to Figure 2-2 for the connections. The 1-phase output for a single power source with the MODE
Option is available from TB1, pins 3 and 4.
2.6
OUTPUT VOLTAGE RANGES
The standard voltage ranges for this AC power system are 135 and 270. Selection of the 270 volt range causes the
front panel "HIGH RANGE" lamp to illuminate. The range may be changed from either the front panel keypad or
through the GPIB input. All voltages are programmed line-to-neutral for 3-phase operation.
2.7 FUNCTION
TEST
Refer to Figure 2-3 for the test setup.
Perform the following test sequence.
1)
Apply the AC line power and turn on the front panel circuit breaker. No loads should be connected to
the output terminal block.
2)
Verify that the POWER ON lamp is lit.
Содержание 12000L-1P
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Страница 138: ...INSTRUCTIONAL MANUAL 2750L P 4500L P 6000L P August 2001 Rev K 134 Figure 14 EMERGENCY VOLTAGE...
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