MI 3290 Earth Analyser
Technical specifications
127
15
Technical specifications
15.1 Earth [Ze]
15.1.1 2, 3, 4 - pole
Measurement principle ................................. Voltage / Current measurement
Earth
Test frequency
Measuring range
Resolution
Uncertainty (* See notes)
Ze
55 Hz … 329 Hz
0,010
… 1,999
0,001
(3 % of r 3 digits)
2,00
… 19,99
0,01
20,0
… 199,9
0,1
200
… 999
1
1,000 k
… 1,999 k
0,001 k
2,00 k
… 19,99 k
0,01 k
659 Hz … 2,63 kHz
0,00
… 19,99
0,01
(5 % of r 3 digits)
20,0
… 199,9
0,1
200
… 999
1
1,000 k
… 1,999 k
0,001 k
3,29 kHz … 15,0 kHz
0,00
… 19,99
0,01
(8 % of r 3 digits)
20,0
… 199,9
0,1
Test mode ...................................................... single or sweep
Open-terminal test voltage ........................... 20 or 40 Vac
Test frequency ............................................... 55 Hz, 82 Hz, 94 Hz, 105 Hz, 111 Hz, 128 Hz, 164 Hz,
....................................................................... 329 Hz, 659 Hz, 1.31 kHz, 1.50 kHz,
....................................................................... 2.63 kHz, 3.29 kHz, 6.59 kHz, 13.1 kHz, 15.0kHz
Short-circuit test current ............................... > 220 mA @ 164 Hz, 40 Vac
Limit range (Ze) ............................................. 0,1
… 5 k
(OFF)
Test voltage shape ......................................... sine wave
Ze definition .................................................. Impedance value Z(f).
Re definition .................................................. Impedance, excluding reactance R.
Measuring time ............................................. see Table 15.2
Automatic test of probe resistance ............... yes (3, 4 - pole)
Automatic connection test ........................... yes [H, S, ES, E]
Automatic range selection ............................ yes
Automatic test of voltage noise .................... yes
* Notes:
Uncertainty depends on the correct compensation of the test leads for 2, 3 – pole, and resistance
of probes and auxiliary earth electrodes (See 15.9 Influence of the auxiliary electrodes).
When measuring at high frequencies > 659 Hz special attention should be given to wiring,
parasitic effects, etc. Use the guard terminal for H.
1 m
resolution only for 3, 4 – pole measurements, resistance of auxiliary earth electrodes
Rc < 300
and test frequency ≤ 329 Hz.
