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Presence relay and phase sequence relay

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PHASE SEQUENCE DETECTOR RELAY

Downloads:

dop23

• Phase sequence monitoring for a three-phase system Mains frequency: 50 Hz, 60 Hz, and 400 Hz (40 Hz–500 Hz)
• Status LEDs – Normal, reverse, and missing phase
• DOP23: Phase sequence OK, phase presence OK
• DOP23L: Phase presence OK

The DOP23 relay enables phase sequence control for three-phase electrical systems that can be moved (
) and where the direction of rotation is critical (e.g., pumps, saws, and drills). A contact indicating the correct phase se
e and the presence of all phases is available to authorize system startup. LEDs on the front panel facilitate diagnostics (normal, reverse, or missing phase).

PHASE FAILURE DETECTOR,

Downloads:

dap23

• Phase detection for three-phase, two-phase, or single-phase systems
Mains frequency: 50 Hz, 60 Hz, and 400 Hz (40 Hz…500 Hz)
Prevents startup in the event of a missing phase.
Protects sensitive equipment from power supply faults.
Use of the neutral wire is optional in three-phase systems

• Phase-by-phase status relay output
Contactor control, PLC input
Connecting the relays in series provides a summary relay output