MULTITEST M72 - M73 - M74 - M75
EN - 41
Phase sequence and phase conformity
Measuring method Working voltage (V) System
up to 315 V (Phase - Ground)
1 test lead (1W)
90 ÷ 315 (Phase - Ground)
up to 550V (Phase - Phase)
up to 315 V (Phase - Neutral)
2 test leads (2W)
90 ÷ 315 (Phase - Neutral)
up to 550V (Phase - Phase) (1)
Max crest factor: 1.5
Frequency range: 45 ÷ 65 Hz
(1) the two-wire measurement can be performed also phase to phase in plants without neutral, even with one phase to
earth, but always with phase to phase voltage up to 550V
Ω 0.2A: Continuity (M72, M74, M75)
Range Resolution Accuracy Overload protection
0.00 ÷ 19.99Ω 0.01Ω
20.0 ÷ 99.9Ω
0.1
±(5.0% rdg + 3 dgt)
605V max RMS
Test current: >200mA DC up to 5Ω (measuring cables resistance included)
Accuracy of current measurement: 1mA
Open circuit voltage: 4 < V
0
< 24V
MΩ: Insulation resistance 250, 500VDC (M72, M74, M75)
Range Resolution Accuracy Overload protection
0.00 ÷ 19.99MΩ 0.01MΩ ±(5.0% rdg + 2 dgt)
20.0 ÷ 199.9MΩ 0.1MΩ ±(5.0% rdg + 2 dgt)
200 ÷ 999MΩ(*) 1MΩ ±(10.0% rdg + 2 dgt)
605V max RMS
(*) For 500VDC test voltage. For 250VDC test voltage the range is: 200 ÷ 499MΩ
Autorange
Open circuit voltage: <1.3 x V
0
Accuracy of nominal voltage: –0% +10%
Short circuit current: <3.0mA
Nominal testing current: 1mA @ 1KΩ x V (1mA @ 500KΩ)
RCD: test on RCD devices AC type (M73, M74, M75)
Range Resolution Accuracy Overload protection
2 ÷ 400ms
1ms
±(2.0% rdg + 2 dgt)
605V max RMS
Phase to ground voltage: 110 ÷ 265V
Test currents: 30mA, 30mA x 5, 100mA, 300mA
Frequency: 50Hz ± 0.5Hz / 60Hz ± 0.5Hz
Ra : Measurement of global earth resistance (M73, M74, M75)
Test current Range Resolution Accuracy Overload protection
15mA
1 ÷ 1999Ω 1Ω ±(5% rdg + 2 dgt)
100mA
0.1 ÷ 199.9Ω 0.1Ω ±(5% rdg + 3 dgt)
605V max RMS
Phase to ground voltage: 110 ÷ 265V; Frequency: 50Hz ± 0.5Hz / 60Hz ± 0.5Hz
Nominal voltage used for the calculation of the prospective short circuit current: 127V if 100V ≤ V
measured
< 150V
230V if 150V ≤ V
measured
< 265V
Wire mapping (M75)
Length of the cable: 1÷100m
Number of remote units: max 8 units
Detected errors: OPEN Pairs, REVERSED pairs, SHORT pairs, SPLIT pairs, CROSSED pairs, MISWIRING
According to the norm: TIA568B
CAUTION
In all measurements the instrument dispalys the CAUTION symbol when:
• the instrument is operating in a critical situation as for example in presence
of overvoltages
• the instrument cannot guarantee the measuring uncertainty lower than
30% of the reading, according to EN61557-1
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