CT-100/CT-150 Series User’s Manual
17
the same principle, in the CT-150 a primary current full-scale if 75A and of 50A
respectively is obtained by connecting primary conductor as follows in
Figure 9:
Primary full-scale current of 50A (left) and of 33.3A (right) in CT-100 or
primary full-scale current of 75A (left) and of 50A (right) in CT-150
Do not apply rated full-scale primary current (i.e. 100A for CT-100 and
150A for CT-150) when carrying out multiple turns on primary conductor hole.
2.5
Secondary-side Signals
The signals on the “secondary” side of the CT-100/CT-150 series “C” version
current transducers are found on pins #1, 2, 3, 6, 7 and 8 (please note that not all of
them are present on all versions) of the DB-9 connector.
The same signals for the “P” version are found from pins #4 to #7 of the through
hole 7-position strip.
2.5.1
Power Supply
Supply voltages for the CT-100/CT-150 series “C”-version have to be fed to pin
#9 (+15V) and to pin #5 (-15V) of the D-sub 9-pin connector; both these voltages are
referred to pin #4 (GND) and have a rated tolerance of ±6% on the nominal values.
In the case of the “P”-version, the +15V have to be fed to pin #3 and the -15V
to pin #2: they are both referred to the GND potential fed to pin #1 of the 7-position
male connection-strip.
Maximum current that can be drawn from each one of these supply voltages is
of 150 mA.
2.5.2
Secondary Current
On the standard CT-100/CT-150 Series versions the secondary current output
I
S
, scaled by the current transformation ratio 1:1000 (for CT-100) or 1:1500 (for CT-
Содержание Flucs CT -100
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