Monitor Relay 3 Phase DIN Rail Mount Phase Loss Phase Reversal Phase Unbalance Undervoltage & Overvoltage

Features

• Family: PMD
• Function: PHASE LOSS, PHASE REVERSAL, PHASE UNBALANCE, UNDERVOLTAGE & OVERVOLTAGE
• Function Name: PMD
• Input: 190-500V AC
• Output: 10A DPDT
• Insulation Voltage: 2,000 volts
• Minimum/Maximum Voltage: 156-550V (PMDU); 77-152V (PMD120): 345-660V (PMD575), all 50/60Hz. +5%
• Load Burden: Less than 40 VA
• Output Contacts: 10A @ 277V AC/30V DC; 1/2HP @ 120/240V AC (N.O.),1/3HP @ 120/240V AC (N.C.), B300 Pilot Duty, R300 (N.O.)
• Life: Mechanical: 10000000 operations Full Load: 100000 operations
• Temperature: -28° to 65°C (-18° to 149°F)
• Reset: As standard, the PMD Series relays are in the Automatic Reset mode. However, they can be set in the Manual Reset mode by connecting an external N.C. switch across terminals 4 and 5. Upon application of line voltage, the PMD Series will go into Manual Reset mode if it recognizes a closure across terminals 4 and 5. After a fault clears, the relay will not reset until the N.C. switch is opened.

Overview

When the proper 3-phase line voltage is applied to the unit and the phase sequence (rotation) is correct, the relay is energized after the Restart Delay is completed. Any one of five fault conditions will de-energize the relay after a delay. As standard, re-energization is automatic upon correction of the fault condition. Manual reset is available if an external momentary N.C. switch is connected to terminals 4 and 5. A bi-color status LED indicates normal condition and also provides specific fault indication to simplify troubleshooting (see right).