DEMA CPM 310 G User Manual

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Thermal Alarm Θ
Just like Trip Θ , Alarm Θ is a heating threshold in
percentage; however, Alarm Θ function activates LEDs
and any possibly configured outputs to inform the
administrator to take appropriate precautions, instead
of tripping the circuit breaker. Alarm Θ setting can be
done within the range of %50 - %200, with the
limitation that Alarm Θ value cannot be set over the
Trip Θ set value. Alarm Θ function can be set as Active
or Passive via the Alarm Θ option.
Alarm Θ function can be utilized in two ways.
When Thermal Θ measurement reaches Alarm Θ
threshold, the user is notified via the static alarm LED
on the frontal face of CPM 310 G, while the alarming
situation is declared on the Alarm Menu . The use of
Alarm Menus will be examined thoroughly on the
dedicated section in the following pages.
Alarm Θ function can also be utilized to automate
cooling systems or to inform the supervisor about the
situation remotely. If, e.g., a forced air cooling system
is to be driven when the protected power transformer
reaches a fixed heating percentage, a programmable
output with Alarm Θ function appointed can be
employed to generate a start signal to the
preconfigured appropriate circuit. If the Alarm Θ
notification is to be sent to the supervisor via an
auxiliary system, e.g. a GPRS communication system, a
programmable output with Alarm Θ function appointed
can be employed to provide notification signal to the
related device. Doing this, CPM 310 G will inform the
configured communications device to take appropriate
action when Alarm Θ threshold is reached. □

DEMA CPM 310 G Specifications

General

Brand	DEMA
Model	CPM 310 G
Category	Relays
Language	English