Description
The Model 274 3-Phase Current
Monitor is designed to monitor all legs of a 3-phase line,
and can also be used to monitor three individual single-phase
lines.
The output relay will energize
on an over-current condition on any one of the 3 monitored
lines. Two indicator lamps are provided to show when an
over-current condition exists and when the output relay
is tripped. An adjustable trip delay of 0.2 to 20 seconds
is provided to reduce nuisance tripping. Matching current
transformers
are available to extend the range of the device to most
any range up to 1,000 amps.
The Model 274 is offered
in either manual or automatic reset models. An external
power supply of 24, 120 or 230 VAC powers the device.
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Hot Features:
- Monitors three
simultaneous currents
- Adjustable trip
point for 3 highest currents
- 1 to 5 amps per
leg
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