Description
The Model 269 Over and Under
3-Phase Monitor continuously monitors 3-phase lines for high
voltage, low voltage, phase loss or phase reversal. This device
features a solid-state voltage and phase-angle sensing circuit,
which drives a SPDT output relay.
The Model 269 is independent
of the system load, and may be used on any horsepower motor.
When phase sequence is correct, and the voltage remains
between the upper and lower trip points, the output relay
remains energizes. When a fault condition is sensed, the
output relay drops out.
The Model 269 does not require
a neutral connection, and can be used on Wye or Delta systems.
Each of the four voltage versions can be adjusted over a
wide range. An adjustable trip delay (1-10 seconds) prevents
nuisance tripping. OVER and UNDER voltage failure indicators
aid in calibration and system troubleshooting.
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•
Trips on high voltage, low voltage, phase loss and phase
reversal
• 4 voltage ranges
• Automatic reset
• 5-Year unconditional
warranty
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Applications
