MI 3143 Euro Z 440 V
Technical specifications
25
9.1.2 High Current
Measurement principle ................................. Voltage / Current measurement (synchronous sampling)
Resistance
Measuring range (
)
Resolution (m
)
Uncertainty (* See notes)
ΔR
0.1 m … 199.9 m
0.1
(5 % of r 3 m
)
200 m … 1999 m
1
2.00 … 19.99
10
(5 % of r 3 digits)
Test mode ...................................................... single
Measuring voltage range ............................... 40 V … 470 V
Measuring frequency range .......................... 16 Hz … 420 Hz
Maximum test current .................................. see chapter
9.4 Test Current,
Figure 9.1
Test method .................................................. 4-wire
Averaging option .......................................... off, 2, 4, 6
Automatic range selection ............................ yes
Automatic test of voltage noise .................... yes
470 Vac
40 Vac
Nominal voltage range
* Notes:
System voltage and frequency kept constant during measurement!
When measuring at low current amplitudes (test load parameter set to 33.3 %) the result can
vary!
If the measurement triggers a fuse (the voltage drops to zero), the measurement will abort (stop).
9.1.3 Averaging options
Additional averaging is built within the instrument to reduce the influence of noise on measurement
results. This option enables more stable results especially when dealing with low impedance
measurement in noisy environment with interharmonics and power-line flickers.
Measurement function ........................................ Z line mΩ, Z loop mΩ, High Current
In the measurement function, the status of the averaging option is shown in the measurement control
window. The table below contains a definition of the individual averaging options and measuring times:
Averaging options
Meaning
Typical measuring times (s)
@ 230 V, 50 Hz
@ 415 V, 50 Hz
Off (1)
Averaging is disabled
3
3
2
Average of 2 results
4
5
4
Average of 4 results
7
10
6
Average of 6 results
10
15
