IQ DATA
Section 5
APPLICATION CONSI DERATIONS
5.0 General
- This Section contains various considerations
to be kept in mind when applying the IQ Data to a specific
application. It is designed primarily for the systems or appli
cation engineer responsible for making up the wiring plan
drawings.
It is strongly suggested that all earlier Sections - especially
2 and 3
-
be read thoroughly before proceeding.
5.1 DIP Switch Settings
- A number of DIP switches,
located on the right rear side of the chassis, tailor each IQ
Data to a specific application. The switches provide 4 selec
tion groupings which must be set by the user during installa
tion. Once these settings are determined, they should be
recorded on a copy of the Installation Record Sheet, shown
in Table 4.A, page 19. The filled-in Record Sheet should then
be made available to the installation team and to maintenance
personnel. Paragraph 4.3 describes how to physically set the
switches.
5.1.1 Current Transformer Ratio
- The ratio of the user
provided external current transformers can vary from 25:5 to
5000:5. Switch
SW1, Nos. 1 thru 5
must be set to correspond
to the external current transformer's ratio, as listed in Table 5.A.
5.1.2 Display Current-
The AC line current level appear
ing in the Display Window is auto ranged to represent
amperes to kiloamperes.
5.1.3 Line Frequency-
The IQ Data can accept a line fre
quency of either 50 or 60Hz. Selection is made at
SW1, No.
8.
Place the switch in the:
•
OFF position for a 50 Hz line
•
ON position for a 60 Hz line
CT
Ratios
25:5
50:5
100:5
150:5
200:5
250:5
300:5
400:5
500:5
600:5
800:5
1000:5
1200:5
1500:5
1600:5
2000:5
2500:5
3000:5
3200:5
4000:5
5000:5
1
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
T D 172838
Table 5.A
CT
RATIO SET TINGS
SW1 Switch Settings(1l
2
3
4
5
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
OFF
OFF
OFF
ON
OFF
OFF
OFF
ON
ON
ON
ON
OFF
ON
ON
ON
OFF
OFF
ON
ON
OFF
OFF
ON
ON
OFF
ON
OFF
ON
OFF
(1) All other combinations are invalid.
20
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