Extech Instruments EX650

EX65x‐en‐GB_V1.6 7/16
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6. Specifications
ELECTRICALSPECIFICATIONS
Accuracyisgivenas±(%ofreading+leastsignificantdigits)at23  C±5  Cwithrelativehumidity<80%.
Accuracyisspecifiedforaperiodofoneyearaftercalibration.
1. TemperatureCoefficientis0.1xspecifiedaccuracy/
 C,<18  C(64.5  F),>28  C(82.4  F)
2. ACFunctionality:ACVandACAspecificationsareACcoupled,TrueRMS;Fornon‐sinusoidalwaveforms,
additionalaccuracyCrestFactor(C.F.)considerationsexistasdetailedbelow:
 Crest factor 1~2, accuracy increases by 3%
 Crest factor 2~2.5, accuracy increases by 5%
 Crest factor 2.5~3, accuracy increases by 7%
Function Range Resolution Accuracy(reading) ‘OL’Protection
ACCurrent
6.000 A* 0.001 A ± (2.5% + 30 digits)
600A
60.00 A 0.01 A
± (2.5% + 5 digits)
600.0 A 0.1 A
*6ArangeonEX650onl
y

TrueRMScurrentapplicableto10%~100%ofrange;Frequencyresponse:50~60Hz
Accuracyvalueincreases(5%typical)whenmeasuringvaryingfrequencyfornon‐sinusoidalwave(EX655)
Inrushmeasurementaccuracyisnotspecified;Inrushmeasurementsareofferedforreferencepurposesonly.
DCCurrent
60.00 A 0.01 A
± (2.5% + 5 digits) 600A
600.0 A 0.1 A
UseZEROtonulldisplaybeforetakingameasurement.
ACVoltage
6.000V 0.001V
± (1.2% + 5 digits)
1000V DC
750V AC
60.00V 0.01V
600.0V 0.1V
750V 1V ± (1.5% + 5 digits)
TrueRMSvoltageapplicableto10%~100% oftherange
InputImpedance:≥10MΩ;Frequencyresponse40~400Hz
Accuracyvalueincreases(5%typical)whenmeasuringvaryingfrequencyfornon‐sinusoidalwave(EX655)
ACVoltage(LPF)
600.0 V 0.1V ± (6.5% + 5 digits) 1000V DC; 750V AC
ACVoltage(LoZ)
600.0 V 0.1V ± (1.5% + 5 digits) 1000V DC; 750V AC
InputImpedanceis approx.3kΩ;Frequencyresponse40~400Hz
DCVoltage
600.0mV 0.1mV ± (1.0% + 5 digits)
1000V DC
750V AC
6.000V 0.001V ± (0.8% + 1 digit)
60.00V 0.01V
± (0.8% + 3 digits)
600.0V 0.1V
1000V 1V ± (1.0% + 5 digits)
InputImpedance:≥10MΩ