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PLM8405

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PLM8405

3 PHASE LINE MONITOR | Series: PLM
info
The PLM Series is a 3-phase voltage monitor that continuously monitors each of the three phases. Monitors both delta and wye systems and no connection to neutral is required. The microcontroller circuit design protects against undervoltage, voltage unbalance, phase loss and phase reversal. Protection is assured when regenerated voltages are present.


Operation
The output relay is energized and the LED glows green when all voltages are acceptable and the phase sequence is correct. Under and unbalanced voltages must be sensed for a continuous trip delay period before the relay de-energizes. Reset is automatic upon correction of the fault condition. The output relay will not energize if a fault condition is sensed as power is applied. The LED flashes red during the trip delay, then glows red when the output de-energizes. The LED flashes green/red if phase reversal is sensed.
Field Adjustment
Set voltage adjustment knob at the desired operating line voltage for the equipment. This adjustment automatically sets the undervoltage trip point. Apply power. If the PLM fails to energize, (LED glows red) check wiring of all 3 phases, voltage, and phase sequence. If phase sequence is incorrect, the LED flashes green/red. To correct this, swap any two line voltage connections at the mounting socket. No further adjustment should be required.

PropertyValue
Input Voltage (V)
360 - 430 Vac
Output Form
Isolated SPDT
Termination Type
Octal 8-pin plug-in rated 600 Vac
Dimensions
3.2 H x 2.39 W x 1.78 D in. (81.3 x 60.7 x 45.2 mm)
Weight (kg)
0 Kg (kilogram)
Input AC Line Frequency (Hz)
50 / 100
Input Phase Sequence
A; B; C
Input Type
3-phase delta or WYE with no connection to neutral
Input Voltage Maximum (V)
480
Output Load Rating (VA)
10 A resistive @ 240 Vac 277 Vac max; 1/2 hp @ 240 Vac; 1/4 hp @ 120 Vac
Output Type
Electromechanical relay
Phase Loss
≥35%
Power Consumption
≤3 W
Reset Time (ms)
Automatic
Response Time (ms)
Phase loss: ≤200 ms; Phase reversal: ≤200 ms
Surge Protection
IEEE C62.41-1991 Level B
Trip Delay Range
5 s fixed
Trip Delay Tolerance (%)
±15%
Type of Detection
Voltage detection with delayed trip and automatic reset
Undervoltage Reset Voltage (%)
+3% of the trip voltage
Undervoltage Trip Voltage (%)
88 - 92% of the adjusted line voltage
Voltage Unbalance Reset (%)
-0.7% unbalance typical
Voltage Unbalance Trip Point (%)
4% fixed
Isolation Voltage
≥2500 Vrms input to output
Mounting Method
Plug-in socket
Operating Temperature Max (°C)
60
Operating Temperature Maximum Fahrenheit
140
Operating Temperature Minimum Celsius
-40
Operating Temperature Minimum Fahrenheit
-40
Storage Temperature Maximum Celsius
85
Storage Temperature Maximum Fahrenheit
185
Storage Temperature Minimum Celsius
-40
Storage Temperature Minimum Fahrenheit
-40

PLM8405 Resources

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Part NumberPart DescriptionRoHSPb-FreeRoHS (2015/863/EU) CertificateREACH (SVHC's) DeclarationREACH (SVHC's)Halogen FreeIPC-Material Declaration
PLM84053 PHASE LINE MONITOR

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