Reduced Input Voltage Considerations; Electrical Installation; Optional Filter/Reactor - Baldor VS1GV21-1B Installation & Operating Manual

4.5 Reduced Input Voltage Considerations

When operating with other than nominal input voltages or with non-standard motors, the output current rating of the drive
must be greater than or equal to the continuous load requirements of the motor.

4.6 Electrical Installation

All interconnection wires between the drive, AC power source, motor, host control and any other operator interface stations
should be in metal conduits or shielded cable must be used. If the connection being made is on a connection stud or
grounding screw, then use listed closed loop connectors that are of appropriate size for wire gauge being used. Connectors
are to be installed using crimp tool specified by the manufactuer of the connector. Only Class 1 wiring should be used. See
Figure A-2 in Appendix A for conduit hole size for each frame size.

4.7 Optional Filter/Reactor

Figure 4-2 shows the connections for installing an optional Line Filter and AC Line Reactor.
Control Rating
HP Input Amps
1 4.2
2 7.0
3 10
5 16
7.5 22
10 28
15 42
20 53
25 66
30 78
40 104
50 130
60 154
*Requires custom drive for CUL application using fast fuses.
Note: Wire sizes based on 75
HP
1
2
3
5
7.5
10
15
MN765
Figure 4-2 Filter and Reactor Connections
L1 Filter
AC L2
Line L3
PE
Line
Table 4-1 240VAC Three Phase Wire Size and Protective Devices
Fast Acting (UL) Fast Acting (CUL)
12
15
25
35
35
70
80
100
125 *125
175 *175
175 *175
200
250
C copper wire. Fuses based on 40
0
Table 4-2 240VAC Three Phase Breaker Size
UL Listed Breaker Size
(AMPS)
L1
L1
L2
L2
Reactor
L3
L3
PE
PE
Load
Input Fuse (Amps)
Time Delay
12 9
15 12
25 20
35 30
35 30
70 60
80 70
100 90
200 175
250 200
C ambient, max continuous output and no harmonic current.
0
HP
20
25
30
40
50
60
Control
Semiconductor (CUL)
A50QS125-4
A50QS150-4
A50QS150-4
UL Listed Breaker Size
(AMPS)
250
250
Wire Gauge
AWG mm
2
14 2.5
14 2.5
14 2.5
12 4.0
10 6.0
8 10.0
6 16.0
4 25.0
4 25.0
3 35.0
2 50.0
2/0 70.0
3/0 85.0
Power Wiring 4-3