The DLMU Series is a universal voltage, 3-phase voltage monitor. It continuously measures the voltage of each of the three phases with microcontroller accuracy and compares the value to preset trip points. It separately senses phase reversal and loss; over, under and unbalanced voltages; and over or under frequency. Protection is assured during periods of large average voltage fluctuations or when regenerated voltages are present. The unit trips within 200ms when phase loss is detected. Adjustable time delays are included to prevent nuisance tripping and short cycling of sensitive equipment. The isolated, 10A, SPDT and 2A alarm output relay contacts trip when a phase voltage exceeds the trip limits for the trip delay. Nominal line voltage, voltage unbalance, and time delays are knob adjustable. The phase loss setpoint and the acceptable frequency range are fixed. Both delta and wye systems can be monitored; no connection to neutral is required. See datasheet for operation details.
Industrial Relays 120V 0.5-5A 0.150-7s CURRENT SENSOR 2s
Voltage Asymmetry, Voltage Sensing AC, Phase Loss 200 ~ 480VAC
| Littelfuse, Inc. | VAST STOCK CO., LIMITED | Quarktwin Technology Ltd. | |
|---|---|---|---|
| Product Category | Electromechanical Relays | Electromechanical Relays | Protective Relays and Monitoring Relays |
| Product Number | DLMUBLAAA | DLMUBLAAA | DLMUBLAAA |
| Product Name | DLM Series – Voltage Monitor | Industrial Relays | Monitor - Relay Output |
| Mounting | DIN; Surface mount with two #8 (M4 x 0.7) screws or snap on 35mm DIN rail |
