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Technical Data
Line Voltage
Type
Line Voltage
Adjustable Voltage Ranges
(Automatic Range Selection)
Maximum Voltage
Phase Sequence
Overvoltage, Undervoltage, &
Voltage Unbalance
Type
Overvoltage & Undervoltage
Undervoltage Trip Point
Reset Voltage
Overvoltage Trip Point
Reset Voltage
Voltage Unbalance Trip Point
Reset on Balance (%):
Selected Unbalance
Trip Delay Range
Severe Unbalance - 2X Selected Unbalance
Random Start Delay
Phase Reversal & Phase Loss Trip Time
Phase Loss Set Point
Reset Type
Output Type
Rating
Life
Protection
Surge
Isolation Voltage
Mechanical
Mounting*
Termination
Package
Environmental
Operating Temperature
Storage Temperature
Weight
Low Voltage Products & Systems
ABB Inc. • 888-385-1221 • Technical assistance 800-377-7722 • www.ssac.com
3 Phase Voltage Monitor
PLMU Series
Universal Plug-in Monitor
Three phase Delta or Wye with no connection to neutral
200 ... 480 V AC +/-15%; 50 ... 60 Hz +/-2 Hz
200 ... 240 V AC, 50 ... 60 Hz
340 ... 420 V AC, 50 Hz
400 ... 480 V AC, 60 Hz
552 V AC
ABC
Voltage detection with delayed trip & automatic reset
88 ... 92% of adjusted line voltage
+2% of trip voltage
109 ... 113% of adjusted line voltage
-2% of trip voltage
Adjustable from 2 ... 10% or fixed 4 ... 10%
2
3
Reset
1.5
2.5
Adj. from 0.25 ... 30 s or fixed 2 ... 30 s +/-15%
0.25 ... 2 s; disabled when the trip delay is less than 2 s
≅ 0.6 s
≤ 150 ms
≥ 15% unbalance
Automatic
Energized when voltages are acceptable
10 A resistive @ 240 V AC; 1/4 hp @ 125 V AC; 1/3 hp @ 250 V AC; max. voltage 277 V AC
Mechanical -- 1 x 10
IEEE C62.41-1991 Level B
≥ 2500 V RMS input to output
Plug-in socket rated 600 V AC
8 Pin octal plug
3.03 x 2.39 x 1.78 in. (77.0 x 60.7 x 45.2 mm)
-40°C ... +60°C
-40°C ... +85°C
≅ 8.6 oz (244 g)
Mechanical View
Inches (Millimeters)
4
5
6
7
8
9
3.5
4.5
5.4
6.3
7.2
8.1
6
; Electrical -- 1 x 10
5
10
9
*CAUTION: Select an octal socket rated for
600 V AC operation.
7.11
1TRC 001 009 C0202
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