TD 172838
of the AC line voltage being monitored.
4. A neutral is provided for 4-wire systems. (Where the moni
tored AC lines are a 3-wire configuration, this terminal
is not to be wired.) Note: This neutral connection must
be at the same potential as the ground connection used
at the current transformers.
5. DIP switches, located on the right side of the chassis,
tailor each IQ Data to a specific application . These DI P
switches are set according to characteristics such as the
external
PT
and
CT
ratios. A complete description of each
DIP switch setting is listed in Section 4.
6. A Communication Port, located on the lower right of the
chassis, is desig ned to connect with an optional Com
munication Module (PONI Card).
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IQ DATA
2.1.3 External Hardware
-
Each IQ Data requires current
transformers be wired into the CT Terminal Block from an
external location (See Figures 4 . 4A- 4 . 4 F).These are user
supplied and must have a 5 ampere secondary.
Potential transformers are required when line voltage is above
600 volts. These are wired directly to the AC Line Connection
Terminals. (See Figures 4.4B, 4 . 4 D and 4 . 4 F.)
2.2 Specifications-
The following specifications of the IQ
Data are contained here:
•
General specifications (Table 2.A)
•
Metering specifications (Table 2.B)
Table 2.A
GENERAL SPECIFICATIONS
Device's Power Requirement
PT
Burden
0.02 VA
With 3-phase Power Module
10 VA
C.T. Burden
1. 2 5 VA
Frequency
50/60 Hz(1)
Line Characteristics
•
Nominal Line ± 20%
Operating Temperature
oo
to 70°C (32° to 158°F)
Storage Temperature
-20° to 85°C (-4° to 185°F)
Humidity
0 to 95% R.H. noncondensing
(1) DIP switch must be set for the correct incoming frequency.
Table 2.8 MET ERING SPECIFICATIONS!1l
Item
Description
Accuracy
In
%
of Reading
AC Amperes (2)
Phase A, B, C
±1%
Voltage
Line A-to-B, B-to-C, and C-to-A
±1%
Voltage
Line A-to-neutral, B-to-neutral , and C-to-neutral
±1%
(1) Updated every 1.4 seconds with a 60 Hz line, or 1.5 seconds with a 50 Hz line, unless otherwise noted.
(2) ::!: 1% Accuracy of reading valid for currents above 20% of the CT primary rating.
9
Shaded area designates information that
replaces or supplements applications using
the 3-phase Power Module.
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