Urschel COMITROL 2100, Инструкция по эксплуатации

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A.15 Addendum
Manual Page Number Revision
46-47 Maintenance, Electrical Assembly
(continued)
: Add the following.
Current Transformer and Motor Load
Indicator
The current transformer (1) measures
the current being drawn by the motor. The
transformer is connected to the motor load
indicator (2) and must be properly configured
for the electrical specifications of your machine.
Replacing the Current Transformer
1. Disconnect the primary wire (3) from the
circuit breaker. Note the number of times
the wire is wound through the transformer.
The top illustration shows examples of
primary windings with values of 1 and 2.
2. Disconnect the secondary wires (4)
from the transformer terminals. Note the
number of times the wire is wound through
the transformer and to which terminals the
wires are connected (one secondary wire is
shown in color in the illustration for clarity;
both wires are black).
3. Install the replacement transformer with
the XI and HI marks (5) face up.
4. Wind the primary wire through the
transformer. Refer to your notes from
Step 1 or see the Current Transformer
Windings Chart included in this addendum.
A small section of the chart (6) is shown
at the right; see the columns indicated by
the arrows. See the motor name plate to
determine the full load amps or check the
amperage rating of the circuit breaker as
described on the previous page.
5. Wind the secondary wire through the
transformer. The wire wound through
the transformer connects to the positive
terminal (7) on the motor load indicator.
Refer to your notes from Step 2 or see the
Current Transformer Windings Chart in this
addendum for the number of windings. See
the column in the chart titled “CT WIND”.
If the value from the chart is negative,
connect the wire to the
XI terminal (8)
on the current transformer. If the value is
positive, connect the wire to the
HI terminal
(9)
. Connect the remaining wire to the other
terminal.
(–) (+)
1
5
5
3
7
9
2
4
8
6
Full Load
Amps
MCCB1
Size
MCCB1
Part Number
Im
Setting
CT WIND
PRI SEC
46
125 A 21932 5
2 -2
47 2 -2
48 2 -1
49 2 -1
50
2 0
(See page A.39: Current Transformer Windings
Chart for the complete chart.)