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Line Impedance
The Baldor Series 15J control requires a minimum line impedance of 1%. The
input impedance of the power lines can be determined as follows:
Measure the line to line voltage at no load and at full rated load. Use
these measured values to calculate impedance as follows:
(Volts
%Impedance +
230VAC, 60Hz, 3% Impendance
Catalog No.
HP
LRAC00401
1
LRAC00801
1.5
LRAC00801
2
LRAC01201
3
LRAC01801
5
LRAC3501
7.5
Line Reactors
3 phase line reactors are available from Baldor. The size of the line reactor to
use is based on the maximum continuous load. If providing your own line
reactor, use the following formula to calculate the minimum inductance
required. Table 3-2 lists the input current required for this calculation. Line
reactors may be used at the control output to the motor. When used this way,
they are called Load Reactors.
L +
Where:
L
V
L-L
0.01
I
377
MN715P
* Volts
NoLoad
FullLoad
(Volts
)
NoLoad
Table 3-3 Recommended Line Reactors
Amps
Inductance
(mH)
4
3
8
1.15
8
1.15
12
1.25
18
0.8
25
0.5
(V
0.01)
L*L
(I
3
377)
Minimum inductance in henrys.
Input volts measured line to line.
Desired percentage of input impedance (1% shown).
Input current rating of control.
Constant used with 60Hz power.
Use 314 with 50Hz power.
)
100
460VAC, 60Hz, 3% Impendance
Catalog No.
HP
LRAC00202
1
LRAC00202
1.5
LRAC00402
2
LRAC00402
3
LRAC00802
5
LRAC01202
7.5
LRAC01802
10
Receiving and Installation 3-4
Amps
Inductacne
(mH)
2
12
2
12
4
6.5
4
6.5
8
3.0
12
2.5
18
1.5
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