Features & Benefits

Application Notes

Protection Provided
Competitive Advantages

 

Overview

Three Phase Voltage Monitor Application Notes

Universal Line Monitor In A Motor Starter:
The PLMU11 line monitor shown below is connected in a typical motor starter. It constantly monitors the three phase voltages and disconnects the motor if a sustained voltage fault occurs. If a fault, like single phasing, is sensed between cycles, the PLMU11's contacts transfer to the position shown the motor cannot be started until the problem is corrected. Reset is automaticly upon correction of the fault. After maintenance on the supply lines, the motor cannot be started until all phases are balanced and the phase sequence is correct. The optional alarm sounds if the operator attempts to start the motor while the PLMU11 is tripped. The output is energized during normal operation when all phase voltages are acceptable.



The PLMU11 offers many advantages for OEM’s and contractors. Its wide operating voltage range allows it to be used in all machines designed for domestic and international facilities. In addition, its industry standard octal plug-in base makes servicing quick and easy. The PLMU11 is also backed by a 10 year warranty. For contractors and service professionals, the wide operating voltage range allows it to serve as a universal replacement for most plug-in line monitors. The PLMU11 has the potential to replace almost 100 individual line monitors on the market from nearly 20 separate manufacturers! Keep the PLMU11 at hand and you’re ready for anything. If you want to save money, reduce inventories, and improve your line monitoring protection, it makes sense to have the PLMU11 on the shelf.

The PLMU11 requires a socket rated for 10 A @ 600 VAC. The 2 A Fast acting fuses are installed to protect the wiring and the socket and are important whenever high humidity is common within the control panel.



Copyright 2001 SSAC Inc    Revised 03/27/03