HLM

HLMUDRAAA

The HLMU Series is a universal voltage, encapsulated, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to

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  • Electrical Characteristics
    • Catalog # HLMUDRAAA
    • Input Voltage (V) 200 - 240 Vac; 340 - 420 Vac; 400 - 480 Vac
    • Input Voltage Maximum (V) 550
    • Input Type 3-phase delta or WYE with no connection to neutral
    • Input AC Line Frequency (Hz) 50 / 60 automatically detected; 240 V ac: 50 / 60; 380 V ac: 50; 480 V ac: 60
    • Input Phase Sequence A; B; C; L1; L2; L3
    • Output Type Isolated electromechanical relay
    • Output Form DPDT
    • Output Load Rating (VA) 10 A resistive @ 240 Vac; 8 A resistive @ 277 Vac; NO-1/4 hp @ 120 Vac; 1/3 hp @ 240 Vac
    • Reset Time (ms) Automatic
    • Response Time (ms) Phase loss: ≤200 ms; Phase reversal: ≤200 ms
    • Restart Delay Range 0.6 - 300 s adjustable; staggered restarting
    • Restart Delay Tolerance (%) ±15%
    • Trip Delay Type Active On: Over/undervoltage; voltage unbalance; over/under frequency
    • Trip Delay Range 1-30 s adjustable
    • Trip Delay Tolerance (%) ±15%
    • Overvoltage Trip Voltage (%) 109 - 113% of the adjusted line voltage
    • Overvoltage Reset Voltage (%) ≅-3% of the trip voltage
    • Undervoltage Trip Voltage 88 - 92% of the adjusted line voltage
    • Undervoltage Reset Voltage (%) ≅+3% of the trip voltage
    • Voltage Unbalance Trip Point (%) Adjustable 2 - 10%
    • Voltage Unbalance Reset (%) ≅-0.7% unbalance
    • Over/Under Frequency (%) ±4%; Reset ±3%; 50 / 60 Hz
    • Phase Loss ≥25%
    • Surge Protection IEEE C62.41-1991 Level B
    • Type of Detection Voltage detection with delayed trip and automatic reset
    • Termination Type Screw terminal connection for up to #12 AWG (3.3 mm²) wire
    • Mounting Method Surface mount with one #10 (M5 x 0.7) screw
    • Operating Temperature -40° to 60°C (-40° to 140°F)
    • Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
    • Humidity 95% non-condensing
    • Dimensions 3 H x 2 W x 1.64 D in. (76.7 x 50.8 x 41.7 mm)
    • Weight (lbs/g) 0 Kg
    • Check Stock Yes