PLMU

PLMU11

The PLMU11 continuously measures the voltage of each of the three phases to provide protection for 3-phase motors and sensitive loads. Its microcontroller senses under and overvoltage, voltage unbalance, phase

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  • Electrical Characteristics
    • Catalog # PLMU11
    • Input Voltage (V) 200 - 480 Vac
    • Input Tolerance (%) ±15%
    • Input Voltage Maximum (V) 552
    • Input Type 3-phase delta or WYE with no connection to neutral
    • Input AC Line Frequency (Hz) 50 / 60 ±2; 200 - 240 V ac: 50 / 60; 340 - 420 V ac: 50; 400 - 480 V ac: 60
    • Input Phase Sequence A; B; C
    • Output Type Energized when voltages are acceptable
    • Output Form Isolated SPDT
    • Output Load Rating (VA) 10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/3 hp @ 250 Vac; 277 Vac max
    • Random Start Delay ≅0.6
    • Reset Time (ms) Automatic
    • Response Time (ms) Phase loss: ≤200 ms; Phase reversal: ≤200 ms
    • Trip Delay Range 0.25 - 30 s adjustable
    • Trip Delay Tolerance (%) ±15%
    • Overvoltage Trip Voltage (%) 109 - 113% of the adjusted line voltage
    • Overvoltage Reset Voltage (%) -2% of the trip voltage
    • Undervoltage Trip Voltage 88 - 92% of the adjusted line voltage
    • Undervoltage Reset Voltage (%) +2% of the trip voltage
    • Voltage Unbalance Trip Point (%) Adjustable 2 - 10%
    • Voltage Unbalance Reset (%) Selected unbalance %/Reset %: 2/1.5; 3/2.5; 4/3.5; 5/4.5; 6/5.4; 7/6.3; 8/7.2; 9/8.1; 10/9
    • Severe Unbalance 0.25 - 2 s; disabled when the trip delay is less than 2 s
    • Phase Loss ≥15%
    • Surge Protection IEEE C62.41-1991 Level B
    • Type of Detection Voltage detection with delayed trip and automatic reset
    • Termination Type Octal 8-pin plug-in
    • Mounting Method Plug-in socket rated 600V
    • Operating Temperature -40° to 60°C (-40° to 140°F)
    • Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
    • Dimensions 3.03 H x 2.39 W x 1.78 D in. (77 x 60.7 x 45.2 mm)
    • Weight (lbs/g) 0 Kg
    • Check Stock Yes