The analog input card CEA-8CA, available in versions 5760 Hz and 15360 Hz, was developed to read up to eight signals from TC's and TP's to assembly in rack 19'' standard, in the versions 6U or 2U, which provides easy installation on oscillography panels.

The transductors are based on isolated instrumentation transformers, with double primary wound allowing for the reading of voltage and current signals.

CHARACTERISTICS:

• Sampling rate: 5760 Hz per channel (96 samples per 60Hz cycle) or 15360 Hz per channel (256 samples per 60Hz cycle);

• Resolution: 16 bits;

• Optional use of anti-aliasing filter: Butterworth, 5 th order low-pass;

• Burden: Below 1.0 VA;

• Card power source voltage: Full Range (100 to 250 Vdc/Vac);

• Type of connection: Serial interface with optical fiber;

• Maximum distance of connection: 1 km;

• Common mode insulation: 2.0kV CA and 1.0kV CC;

• Analog channel operating as current input:
        • Rated current: 1A or 5A (can be set by hardware).
        • Measurement range: from 0 to 20In.
        • Maximum time of over-current: permanent up to 5In,             above that up to 2 seconds.
        • Type of insulation: Galvanic.
        • Error of phase angle: below 1 electrical degree,             considering the entire signal condition.
        • Measurement accuracy: below 0.5% for 1 pu, below             3% for 0.05pu, with DHT less than 5%.

• Analog channel operating as voltage input:
        • Rated voltage: 115 and 115/ V.
        • Measurement range: 0 to 2,0Vn.
        • Maximum time of over-voltage: permanent up to 2Vn,             above that up to 2 seconds.
        • Type of insulation: Galvanic.
        • Protection: Varistor on in differential mode.
        • Error of phase angle: below 1 electrical degree.
        • Measurement accuracy: below 0.5% for 1 pu, below             3% for 0.02 pu with DHT less than 1%.