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PT UNIT USER MANUAL
APRIL 2023 www.eaton.com.cn
2. Protection and Metering Features
2.3 Current and Voltage Metering Data
Table 4. Current and Voltage Metering Data
Current Metering
Unit
Accuracy
Notes
IA, IB, IC, IN, IG
Amperes
±1.5% of Reading
Minimum IA, IB, IC, IN, IG
Amperes
±1.5% of Reading
Group values held until reset
Maximum IA, IB, IC, IN, IG
Amperes
±1.5% of Reading
Group values held until reset
Voltage Metering
Unit
Accuracy
Notes
VAB, VBC, VCA
Volts
±0.5% of Reading
Line to Line Voltage
Minimum VAB, VBC, VCA
Volts
±0.5% of Reading
Group values held until reset
Maximum VAB, VBC, VCA
Volts
±0.5% of Reading
Group values held until reset
VAN, VBN, VCN
Volts
±0.5% of Reading
Line to Neutral Voltage
Minimum VAN, VBN, VCN
Volts
±0.5% of Reading
Group values held until reset
Maximum VAN, VBN, VCN
Volts
±0.5% of Reading
Group values held until reset
Accuracy applicable for 10% to 120% of In at the ambient temperature of 25°C.
Only the PT25 supports this function.
Accuracy applicable for the voltage of 50 to 690Vac at the ambient temperature of 25°C.