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DLMHBRAAA
3 PHASE VOLTAGE MONITOR | Series: DLMThe 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.
| Property | Value |
|---|---|
Input Voltage (V) | 500 - 600 Vac |
Termination Type | Screw terminal with captive wire clamps for up to #14 AWG (2.5 mm²) wire |
Dimensions | 4.33 H x 2.95 W x 1.97 D in. (110 x 75 x 50 mm) |
Weight (kg) | 0 Kg (kilogram) |
Humidity | 95% non-condensing |
Input AC Line Frequency (Hz) | 50 / 60 |
Input Phase Sequence | A; B; C; L1; L2; L3 |
Input Type | 3-phase delta or WYE with no connection to neutral |
Input Voltage Maximum (V) | 600 |
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 |
Output Type | Isolated electromechanical relay |
Over/Under Frequency (%) | ±4%; Reset ±3%; 50 / 60 Hz |
Overvoltage Reset Voltage (%) | ≅-3% of the trip voltage |
Overvoltage Trip Voltage (%) | 109 - 113% of the adjusted line voltage |
Phase Loss | ≥25% |
Reset Time (ms) | Automatic |
Response Time (ms) | Phase loss: ≤200 ms; Phase reversal: ≤200 ms |
Restart Delay Range | 0.6 - 300 s adjustable |
Restart Delay Tolerance (%) | ±15% |
Surge Protection | IEEE C62.41-1991 Level B |
Trip Delay Type | Active On: Over/undervoltage; voltage unbalance; over/under frequency |
Trip Delay Range | 1-30 s adjustable |
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 |
Voltage Unbalance Trip Point (%) | Adjustable 2 - 10% |
Isolation Voltage | ≥2500 Vrms input to output |
Mounting Method | Surface mount with two #8 (M4 x 0.7) screws or snap on 35mm DIN rail |
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 |
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| Part Number | Part Description | RoHS | Pb-Free | RoHS (2015/863/EU) Certificate | REACH (SVHC's) Declaration | REACH (SVHC's) | Halogen Free | IPC-Material Declaration | |
|---|---|---|---|---|---|---|---|---|---|
| DLMHBRAAA | 3 PHASE VOLTAGE MONITOR | View More |
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