Part numbers: 001-DVM-118, 001-DVM-1212, and 001-DVM-DR are Three Phase Monitors used for Motor Protection. These Phase Monitors can be used in either a 230V or 480V panel.

When proper voltage is connected to the Phase Monitor, the internal relay of the Phase Monitor Relay will be energized and the LED will come on steady. An abnormal condition in the Phase Failure Relay will cause the LED to blink during the trip delay. When the trip delay has expired the internal relay of the Phase Loss Relay will be de-energized.
Unit of Measure
Items
Phase Monitors (001-DVM-118)

3 Phase, Medium Case
List Price $128.52

Phase Monitors (001-DVM-118)

3 Phase, Medium Case
List Price $200.21

Phase Monitors (001-DVM-118)

3 Phase, Medium Case
List Price $200.21

Phase Monitors (001-DVM-118)

3 Phase, Medium Case
List Price $200.21

Phase Monitors (001-DVM-1212)

3 Phase, Dual Voltage Phase Monitor
List Price $134.96
Underwriter's Laboratories (UL) File Number N/A #E101681
Alternating Current (AC) Operating Voltage N/A 230 V480 V
Relay Type N/A SPDT SPST N/A SPDT SPST N/A SPDT SPST N/A SPDT SPST N/A DPDT
Base Terminal Configuration N/A 8 Pin, Octal N/A 8 Pin, Octal N/A 8 Pin, Octal N/A 8 Pin, Octal N/A Plug in 12 Pin Rectangular
Socket Type N/A 8 Pin Octal N/A 8 Pin Octal N/A 8 Pin Octal N/A 8 Pin Octal N/A 12 Pin Rectangular, SD 12-PC
Under Voltage Trip N/A - 15% of Setting for 230V -10% for 480V
Under Voltage Reset N/A -12% of Setting for 230 V -8% for 480 V
Over Voltage Trip N/A +15% of Setting for 230 V -10% for 480 V
Over Voltage Reset N/A +12% of Setting for 230 V -8% for 480 V
Phase Unbalance Trip N/A 5% with 5 Second Trip Delay
Phase Unbalance Reset N/A 4 %
Trip Delay N/A 5 sec. (Delay is reduced to less than 1 sec if Phase Imbalance is 15% or greater.)
Reset Delay N/A 2 sec. (Standard)
Voltage Ranges N/A 200 to 240 V425 to 525 V
Output Rating at 240 Volt Alternating Current (AC) Voltage N/A 10A Resistive
Operating Temperature N/A -40 to +50 ºC
Storage Temperature N/A -45 to 85 ºC
Enclosure Material N/A White Lexan
Base Material N/A Blue Lexan
Protects Against N/A Under Voltage Phase Loss Phase Imbalance Phase Reversal
Customer Options
N/A N/A 5 Second Reset Delay N/A 30 Second Reset Delay N/A Over Voltage N/A
Category N/A Phase Monitors
Additional Description N/A

The LED of the Three Phase Monitoring Relay will then provide a series of pulses that indicate which fault condition is present. When conditions return to normal, the LED of the Phase Sensing Relay will blink during the reset delay. When the reset delay has expired, the LED will come on steady and the internal relay will be energized. The reset delay is also active immediately after power is turned on to the unit. These units can be used on Delta or Wye systems, 50/60 Hz. These Phase Monitors come in either 230 VAC or 480 VAC, and are also available as a Dual Voltage Phase Monitor.