Description
The Model 272 3-Phase Current
Unbalance Detector monitors 3-phase lines to detect an unbalanced
current. It can also monitor three separate single phase lines
for equal current levels.
The percentage of unbalance
is adjusted from 2% to 25% by adjusting a front panel control.
An unbalance greater than this setting energizes the relay.
An adjustable trip delay of 0.5 to 10 seconds is also provided.
For optimum performance, operating currents should be kept
in the 1 to 5 amps range. However, zero current on each
phase is considered to be a balanced condition.
Continuous currents, up
to 10 amps per phase, will not damage the unit, nor will
current surges up to 40 amps for 2 seconds. The contacts
are automatically reset when the unbalanced condition is
corrected.
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Hot Features:
- Automatic reset
- Monitors for current
unbalance
- Adjustable trip
delay
- Adjustable unbalance
percentage
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