1- Introduction - ITALFARAD SPC Instrucciones De Uso

1. Introduction
Module SPC is designed for the protection and monitoring of electrical equipment and
switchboards, especially as regards the filter and automatic power factor correction
systems, through continuous monitoring of the line voltage, current (amplitude and
harmonic content) and temperature of the system.
The voltage levels are compared with a preset threshold value and an alarm is
generated if such limit is persistently exceeded.
The current signal is processed in order to calculate its total amplitude and total
harmonic distortion THD: upon exceeding of a short circuit threshold or programmed
max. distortion, an alarm signal is generated.
The temperature value, acquired by external probe, is monitored so that the cooling
devices are enabled when a prealarm threshold is exceeded while an alarm is generated
when the preset max. permissible temperature is exceeded.
All measurements and alarm signals provided by the instrument appear on the front
panel display. Programming of the operating parameters is through 4 function keys.
Thanks to the compact design and competitive cost, the instrument finds wide
application in all industrial and residential systems.
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