258-3-Phase-Monitor
dim-1app-258

B258B-400HZ

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The Model 258 continuously monitors 3-phase power lines for abnormal conditions. When properly adjusted, the Model 258 monitor will detect phase loss on a loaded motor even when regenerated voltage is present.

This device consists of a solid-state voltage and phase-angle sensing circuit, driving an electromechanical relay. When correct voltage and phase rotation are applied, the internal relay will energize. A fault condition will de-energize the relay. When the fault is corrected, the monitor will automatically reset (a manual reset version is also available).

The Model 258 does not require a neutral connection and can be used with Wye or Delta systems. Voltage ranges are sufficiently wide to allow for proper adjustment to existing conditions. Both TRIP and NORM condition indicators are provided to aid in adjustment and system trouble-shooting.

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Additional Information

400 Hz Model

Yes

Automatic Reset

Yes

Certifications

CSA and UL

Contacts

SPDT

Manual Reset

No

Mount

8-Pin

Phase Sensing

Phase Reversal,Phase Loss

Trip Delay

No

Trip Restart

No

Voltage Sensing

Under Voltage Protection

Voltage Range

120VAC