Fluke 1623 Fluke 1623 and 1625 Geo Earth Ground Testers Datasheet - Page 9

Resistance measurement (R~) Measuring method Measuring voltage Short circuit current Measuring frequency Current and voltage measurement 20 V ac, square pulse > 250 mA ac 94, 105, 111, 128 Hz selected manually or automatically (AFC) Measuring range 0.020 7 to 300 k7 Display range 0.001 7 to 2.999 7 3.0 7 to 29.99 7 30 7 to 299.9 7 300 7 to 2999 7 3.0 k7 to 29.99 k7 30.0 k7 to 299.9 k7 Resolution 0.001 7 0.01 7 0.1 7 17 10 7 100 7 Intrinsic error ± (2 % of rdg + 2 digit) Measuring time Max. interference voltage Max overload typ. 6 sec. 24 V, with higher voltages measurement will not be started Urms max. = 250 V Operating errors ± (5 % of rdg + 5 digit) Resistance measurement (R ) Measuring method Open circuit voltage Short circuit current Formation of measured value current- voltage measurement as per IEC61557-4 possible 20 V dc 200 mA dc with 4-pole measurement wires on H, S, ES can be extended without additional error. Resistances > 1 7 in wire E can cause additional error of 5m 7/7. Measuring range 0.020 7 to 3 k7 Display range 0.001 7 to 2.999 7 3.0 7 to 29.99 7 30.0 7 to 299.9 7 300 7 to 2999 7 Resolution 0.001 7 0.01 7 0.1 7 17 Intrinsic error ± (2 % of rdg + 2 digit) Measuring sequence Measuring time Max. interference voltage Max inductivity Max. overload Approx. 2 measurements/s Typ. 4 sec. incl. reversal of polarity (2-pole or 4-pole) b 3 V ac or dc, with higher voltages measurement will not be started 2 Henry Urms = 250 V Operating error ± (5 % of rdg + 5 digit) Compensation of lead resistance (RK) Compensation of lead resistance (RK) can be switched on in functions RE 3-pole, RE 4-pole Formation of measured value R = R - R * display measured compensated , R~ , and R * Value of setpoint entry RK = 0.000 7, variable from 0.000 to 29.99 7 by means of measuring adjustment. 2-pole 9 Fluke Corporation 1623 and 1625 GEO Earth Ground Testers