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Overview
- Monitors three-phase mains for phase failure and sequence.
- Adjustable phase sequence monitoring.
- Control supply voltage: 300-500 V AC (phase-to-phase).
- Control supply voltage: 180-280 V AC (phase-to-neutral).
- Operates at 50/60 Hz rated frequency.
Specifications
Series | CM-MPS.11P |
Package Dimensions (L x W x H) | 1.18 IN x 3.82 IN x 4.29 IN |
Package Dimensions (L x W x H) | 2.9972 cm x 9.7028 cm x 10.8966 cm |
Package Weight (Imperial) | 0.380 L |
Package Weight (Metric) | 0.172 kg |
PLM9405
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.
PMDU
Three Phase Monitor Relay; DIN-Mount; 190-500V; 10A DPDT; Phase Loss; Reversal; Unbalance; Under/Over Voltage
VM110-00-21
The Littelfuse VM110-00-21 is a high-quality industrial component designed for demanding applications requiring reliability and durability. Engineered to meet stringent performance standards, this product ensures optimal operation in harsh environments. Its robust construction and advanced technology make it an ideal choice for industrial automation, power distribution, and other critical systems. Trust Littelfuse for superior protection and efficiency in your operations.
Frequently Asked Questions
What functions does the three-phase monitoring relay perform?
It detects phase failure, monitors phase sequence, over/undervoltage, and interrupted neutral.
What is the rated control supply voltage for this relay?
The rated control supply voltage is 100-240V AC for L/N.
What is the measuring range for the control supply?
The measuring range for the control supply is 100-240V AC for L/N.
What type of output contacts does this relay have?
It features 2 C/O SPDT contacts.
What is the maximum operating voltage for the UL/CSA output circuit?
The maximum operating voltage for the UL/CSA output circuit is 250V AC.
What is the contact rating for UL/CSA standards?
The contact rating for UL/CSA standards is 5A (B300).
What is the connecting capacity for flexible and rigid wires under UL/CSA?
The connecting capacity is 1x 14 AWG for flexible and 1x 14 AWG for rigid wires.
What are the ambient air temperature operating limits?
The device can operate in ambient air temperatures from -25 to 55 degrees Celsius.
What is the storage temperature range for the relay?
The storage temperature range for the relay is -40 to 70 degrees Celsius.
What are the dimensions of the product?
The product has a net width of 22.5mm, height of 90mm, and depth of 67.5mm.
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