Baldor MN735 manual Unshielded and Shielded Couplings, Clamp Terminal

Examples:

A 5hp, 230VAC control operating at 208VAC has a reduced power rating of 4.5hp.

5HP	208VAC	+	4.5hp
	230VAC

Likewise, a 3hp, 460VAC control operating at 380VAC has a reduced power rating of 2.47hp.

3HP	380VAC	+	2.47hp
	460VAC

Electrical Installation All interconnection wires between the control, AC power source, motor, host control and any operator interface stations should be in metal conduits or shielded cable must be used. 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 manufacturer of the connector. Only class 1 wiring should be used.

Figure 3-3 Unshielded and Shielded Couplings

Rubber	Metal	360 Degree
Grommet	Coupling	Coupling

360 Degree Coupling

Holes are required in the enclosure assembly to allow connections to be made. Use the correct size rubber grommet, conduit coupling or 360 degree coupling.

Clamp Terminals To install a wire into a clamp terminal, first strip wire insulation to 0.20–0.24 in. (5–6mm). Insert a flat–blade screwdriver, maximum blade size 0.138 in. (3.5mm) into the adjacent hole. Do not twist or rotate the screwdriver as this action may damage the terminal. A very slight downward pressure on the screwdriver should open the terminals and allow the wire to be inserted. Insert the wire into the clamp opening (Figure 3-4). Remove the screwdriver. The terminal provides the correct force for a secure connection.

Figure 3-4 Clamp Terminal

MN735 Receiving & Installation 3–5