Operation
Disconnector Switch Operation—Standard and Compact Configurations
Opening the Disconnector Switch
To open the disconnector switch, follow these steps:
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If the controller is supplying power to the motor, press the Stop button on the control panel to remove power to the motor.
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Grasp the disconnector switch operator handle and rotate the handle counter-clockwise downward to the Off/Open position (shown in Handle Positions).
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Use the viewing window to view the disconnector switch and verify that the disconnector switch is in the Off/Open position.
 DANGER |
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hazard of electric shock, explosion, or arc flash
Failure to follow these instructions will result in death or serious injury.
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Closing the Disconnector Switch
To close the disconnector switch, follow these steps:
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Use the viewing window to view the disconnector switch and verify that the disconnector switch is in the Off/Open position (shown in Handle in Off/Open Position) .
Handle in Off/Open Position
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Grasp disconnector switch operator handle and rotate the handle clockwise upward to the On/Closed position (shown in Switch Handle On/Closed Position).
Switch Handle On/Closed Position
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Use the viewing window to view the disconnector switch and verify that the blades for all three phases are in the On/Closed position (shown in Switch Blades in Closed Position).
Switch Blades in Closed Position
Disconnector Switch Operation—Dual Configuration
| NOTICE |
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Mechanism Jam and Damage
Failure to follow these instructions can result in equipment damage.
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Handle Latch Button Positions
Legend — Handle Latch Button Positions
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Call-out |
Description |
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A |
Handle latch button pushed in (“In position”) |
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B |
Handle latch button pulled out to its maximum (“Out position”) |
Opening the Disconnector Switch
To open the disconnector switch, follow these steps:
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If the controller is supplying power to the motor, press the Stop button on the control panel to remove power to the motor.
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Grasp and pull the handle latch button out all the way to its maximum extend (“Out” position) and hold it in this position.
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While holding the handle latch button in its “Out” position, rotate the switch operating handle downward approximately 15° or until a resistive force is felt in the handle.
Handle in ON Position
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Release the handle latch button, and using a smooth, continuous motion firmly pull the switch operating handle downward until it stops.
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Once the switch handle is completely down, the handle latch button will reset to its original position.
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Use the viewing window to view the disconnector switch and verify that the disconnector switch handle is in the Off/Open position and the switch blades are in the Open position.
Handle in OFF Position
| DANGER |
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|
hazard of electric shock, explosion, or arc flash
Failure to follow these instructions will result in death or serious injury.
|
Closing the Disconnector Switch
To close the disconnector switch, follow these steps:
-
Use the viewing window to view the disconnector switch and verify that the disconnector switch is in the Off/Open position.
Handle in OFF Position
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Grasp and pull the handle latch button out all the way to its maximum extent (“Out” position) and hold it in this position.
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While holding the handle latch in its “Out” position, rotate the switch operating handle upward approximately 15° or until a resistive force is felt in the handle.
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Release the handle latch button, and using a smooth and continuous motion, firmly pull the switch operating handle upward until it stops.
Handle in ON Position
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Once the handle is completely up, the handle latch button will reset to its original position.
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Use the viewing window to view the disconnector switch and verify that the disconnect switch handle is in the On/Closed position and the switch blades are in the Closed position.
MotorSeT MV ATL Motor Starter Operation
With the MotorSeT MV ATL Motor Controller, the motor is directly connected to the supply lines, allowing full voltage to the motor for starting.
With the disconnector switch in the Closed position, when a start command is received (via the Start button on the control panel or a control input), the coil on the main contactor is energized, closing the contacts on the main contactor. Full voltage is supplied to the motor, allowing it to start and run at full speed.
The motor can be stopped by a Stop command (via the Stop button on the control panel or a control input) or by the motor protective relay. In both cases, the contactor coil is de-energized causing the main contactor to open. Voltage is no longer supplied to the motor and it coasts to a stop.
The motor protective relay stops the motor, when one of the protection parameters goes beyond the programmed settings. If the motor is stopped by the protective relay, it cannot be restarted until the protective relay has determined that the event has cleared.
For ATL starter configurations using the MotorSeT advanced motor control system, refer to instruction bulletin BRU3897001 for details on programming and operation of the system.
Feeder Configuration Operation
The feeder configuration operates similar to the ATL motor starter except that voltage is being provided to equipment that is not a motor. The MotorSeT advanced motor control system cannot be used in a feeder configuration.
When the feeder is powered on (via the Power On button on the control panel or a control input), the coil on the main contactor is energized, closing the contacts on the main contactor. Full voltage is supplied to all equipment downstream of the feeder.
The feeder can be powered off by a Power Off button on the control panel, by a control input, or by the protective relay. All equipment downstream of the feeder will lose power and shut off until the event is cleared or the equipment is powered back on manually.