Motor Control Panel

Topics: Three-phase electric power, Transformer, Relay Pages: 3 (370 words) Published: February 26, 2014
ELECTRICAL CONTROL PANELS

UL Listed Electrical Control Panels

LISTED

800-421-1266

ELECTRICAL CONTROL PANELS

ELECTRICAL INSTALLATION INSTRUCTIONS
AIR CURTAIN

OPENING
TYPICAL INSTALLATION
1. Connect supply voltage from power panel to control panel. 2. Connect wires from motor leads in junction box(s) to terminals in panel per print. 3. Connect wires from micro switch to terminals in panel per print. 4. Check rotation of motors and switch leads if necessary. (3 phase only) NOTE: 1. Circuit protection as per NEC by others. 2. Overloads are factory preset. 2

ELECTRICAL CONTROL PANELS

CONTROL PANEL APPLICATIONS

Typical Installation (WindGuard model shown)

Panel shown with door mounted hands-off-auto switch
(standard)

Typical panel interior, shows easy serviceability

Door activator micro switch (roller style). Provides simple
on/off controls as door opens/closes

Control panels are UL Listed, labeled and constructed to meet the UL 508 standard. The pre-wired panel is complete with, but not limited to; magnetic contactor, overload protection, terminal strips, control transformer, control fusing, HOA selector switch and NEMA 1, UL Listed indoor enclosure. Optional outdoor enclosure and other NEMA rated enclosures available. Specify if CSA certifiaction required.

APPLICATION
UL Listed motor control panels provide easy installation, insures long life and safe operation. A control panel is required for all three phase units and all single phase units with a combined capacity exceeding 1 HP. One control panel can be used for multiple air curtain installations. Optional features, such as door micro switches, used for automatic on/off control which turns air curtain “on” when the door is opened, and “off” when the door is closed, are easily wired to the terminal strip provided in the motor control panel. 3

ELECTRICAL CONTROL PANELS

TYPICAL 2 MOTOR 3 PHASE WIRING SCHEMATIC

STANDARD COMPONENTS
1.
2.
3.
4.

NEMA 1...
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