IQ DP-4000
SECTION 4 - INSTALLATION AND STARTUP
ENSURE THAT THE INCOMING AC POWER AND ALL
'FOREIGN' POWER SOURCES ARE TURNED OFF
AND LOCKED OUT BEFORE PERFORMING ANY
WORK ON THE IQ DP-4000 OR ITS ASSOCIATED
EQUIPMENT.
FAILURE
TO
OBSERVE
THIS
PRACTICE CAN RESULT IN SERIOUS OR EVEN
FATAL INJURY AND/OR EQUIPMENT DAMAGE.
Figures 4.4 - 4. 1 5 show typical wiring plans. When
referring to the figures, note the following:
1 . Phasing and polarity of the AC current inputs and the
AC voltage inputs and their relationship are critical to
the correct operation of the wattmeter.
2. The incoming AC line phases A, 8, and C connect
from three external potential transformers (PT's) to
the AC line connection terminals on the chassis
(above 600V).
TD1 7548A
3. You can use NO and NC contacts from the Relays to
control external devices. These contacts are rated at
1 0 amps for 1 20/240 VAC or 30 VDC.
4. The wires connecting to the IQ DP-4000 m ust not be
larger than AWG No. 1 4. Larger wires will not
connect properly with the various terminal blocks.
5. Keep the wiring between the current transformers
and the IQ DP-4000 as short as possible (200 feet
max.) . W henever possible, route these lines away
from other AC lines and inductive devices. If the lines
must cross other AC lines, cross them at right
angles.
6. The protective functions of the IQ DP-4000 (with the
optional 1/0 module) directly control the Relays, as
described in Section 5.
7. Connect the sync pulse terminals to the dry contact
input only. The 24VDC is supplied by the IQ DP-
4000 on Terminal 1 .
3
PHASE
3 WiRE
(UP TO
500
VOLTS)
DIRECT VOL'AGE CONNECTION
&
EXTER:'JA� CURRC::NT TRANSFORMERS
(100-350
VDC
)
(96-264
VAC
)
CONTROL POWER
I
'
1
�
]o 46
A
<'l
H2C H2B H2A
TERM.
BI
Ceo
6
�J
EUTRAL
�
SEPARATE SOURCE POWER SUPPLY MODULE
LOAD
Figure 4.4 3-Phase, 3 Wire (up to 600 volts) Wiring Diagram (Separate Source)
1 4
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