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SAFETY FOR LIFE

S280-79-10

INPUT ACCURACY

Sensed Currents

Note: Control only, does not include sensor tolerance, but does include the phase current summing process.

Phase Current—Individual Phase Currents:

Range: 1 A to 10,000 A for 500:1 CTs 2 A to 20,000 A for 1000:1 CTs 4 A to 40,000 A for 2000:1 CTs

Accuracy:± 1 mA from 10 mA to 125 mA 0.8% from 125 mA to 1600 mA

(Control only, does not include sensor tolerance.)

Ground Current—Vector Sum of Three-Phase Currents:

Sensed Source Voltages

Three-phase voltages used in voltage, power and power- factor related calculations:

Voltage measurement accuracy:

±0.4V from 5V to 80V

0.5% from 80V to 135V

Range: 1 A to 5,000 A for 500:1 CTs 2 A to 10,000 A for 1000:1 CTs 4 A to 20,000 A for 2000:1 CTs

Accuracy: ± 3 mA from 10 mA to 125 mA 2.4% from 125 mA to 1600 mA

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