Viking Pump TSM750: M10 Power Load Monitor - Manual (Page 4)

DANGER !
Terminals 1 and 2 (s1, s2) carry line voltage.
TABLE 1
Current Transformer And Number Of Primary Windings
1. Check the rated motor current on the motor plate.
2. Compare this value with the Rated Motor Current in
table 1.
3. From table 1, select the appropriate numbers of
windings for the current transformer.
EXAMPLE
• Rated motor current = 12 A.
• Select 10. 1 - 12. 5 from the first column in table 1 and
choose 2-E90-013-999-00 with two (2) primary windings.
Note!
Maximum length of CTM cable is 39 inches (1 m).
Note!
Normally the appropriate current transformer will have
been ordered and shipped with the Power Load Monitor,
check that this is the case; contact the supplier if in doubt.
FIGURE 5
Example 1 And 3 Windings.
Note!
The transformer connection and orientation are not polarity
sensitive.
CURRENT TRANSFORMERS
VIKING PART
NUMBER
2-E90-012-999-00 2-E90-013-999-00 2-E90-014-999-00
TRANSFORMER
MODEL
CTM010 CTM025 CTM050
RATED MOTOR
CURRENT (A)
0.40-1.00 10
1.01– 2.00
5
2.01–3.00
3
3.1-5.0
2
5.1-10.0
1
10.1-12.5 2
12.6-25.0 1
26-50 1
CURRENT TRANSFORMER SELECTION
FOR MOTORS UP TO 50 A
FIGURE 4
Example: CTM O25 With 2 Windings For 12 A Motor
SECTION TSM 750 ISSUE A PAGE 3 OF 7
VIKING PUMP, INC. ● A Unit of IDEX Corporation ●
Cedar Falls, IA 50613 USA ©2002
SECTION TSM 750 ISSUE B PAGE 4 OF 8