The SPC2 device has been designed to protect the electrical panels and electrical plants, mainly the power factor regulation and filtering plants, by mean of continuous monitoring of line voltage, line current (amplitude and harmonics) and temperature. The voltage value is compared with a threshold value programmable, giving an alarm when exceeded. Current value is processed to calculate the RMS amplitude and the total harmonic distortion THD: when a maximum short-circuit and current distortion threshold is exceeded an alarm output is generated. Temperature value, transduced by means of an internal probe, is monitored to activate cooling devices (fan, etc...) when a programmable pre-alarm threshold is exceeded and to produce an alarm if a programmable maximum value is exceeded. All measurements and alarms are displayed on the front panel display. Working parameters setup is accomplished using 4 functional keys. Small size (DIN 96x96 mm) and low cost make SPC2 ideal to use in all industrial and civil electrical plants.

Technical Characteristics

 Supply Voltage

 115-230 Vac on request ±10% 50/60 Hz

 Maximum Power Consumption

 4 VA

 Input Voltage

  3 inputs 400 V ±10% phase to phase, 50/60 Hz

 Input Impedance

 >1 Mohm

 Input Current

 3 inputs from external CT /5A

 Over Current

 Current Circuit Absorption

 Voltage Measurement Accuracy

 Current Measurement Accuracy

 ± 1% f.s.

 THDI Measurement Accuracy

 ±1% f.s. Irms>10%f.s.; ±5% f.s. Irms<10% f.s.

 Temperature Measurement Accuracy

 Time Accuracy

 ± 1 sec.

 Relay Contacts of Cooling Device

 5A 250V NO

 Alarm Relay Contacts

 5A 250V NC

 RS232 Communications

 Requires specific external adapter

 Working Temperature

 from 0°C to +55°C

 Humidity

 95% uncondensed

 Storage Temperature

 -20°C  +70°C