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Section 1
General Information
3-10 Receiving & Installation MN722
Three Phase Input Power Connections
AC power and motor connections are different for controls that have a model number
suffix of “EL” and “EK”. Be sure to use the correct procedure for your control.
Note: “EK” Controls are input phase sensitive. Be sure all connections are correct.
“EL” suffix
The AC power and motor connections are shown in Figure 3-3. Overloads are not
required. The 22H control has an electronic I
2
t motor overload protection. If motor
overloads are desired, they should be sized according to the manufacturers specifications
and installed between the motor and the T1, T2 and T3 terminals of the control.
1. Connect the incoming AC power wires from the protection devices to terminals
A1, B1 and C1 at the 3% line reactor.
2. Connect A2, B2 and C2 3% line reactor terminals to the L1, L2 and L3 power
input terminals of the control.
3. * Connect earth ground to the “ ” of the control. Be sure to comply with local
codes.
* Grounding by using conduit or panel connection is not adequate. A separate
conductor of the proper size must be used as a ground conductor.
Figure 3-3 “EL” Control 3 Phase AC Power and Motor Connections
L1 L2 L3
Alternate *
Fuse
Connection
Note 1
L1 L2 L3
L1 L2 L3
* Circuit
Breaker
Earth
* Optional components not provided with 22H Control.
See Recommended Tightening Torques in Section 7.
Note 2
Baldor
Series 22HXXX-EL
Control
Line
Reactor
Note 1
Note 2
A1 B1 C1
A2 B2 C2
A1 B1 C1
Note 3
Notes:
1. See “Protective Devices” described previously in this section.
2. Shield wires inside a metal conduit.
3. 3% Line Reactor is required at input.