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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
÷
19.99
Ω
0.01
Ω
20.0
÷
99.9
Ω
0.1
±
(5.0% rdg + 3 dgt)
605V max RMS
Test current: >200mA DC up to 5
Ω
(measuring cables resistance included)
Accuracy of current measurement: 1mA
Open circuit voltage: 4 < V
0
< 24V
M
Ω
: Insulation resistance 250, 500VDC (M72, M74, M75)
Range Resolution
Accuracy
Overload
protection
0.00
÷
19.99M
Ω
0.01M
Ω
±
(5.0% rdg + 2 dgt)
20.0
÷
199.9M
Ω
0.1M
Ω
±
(5.0% rdg + 2 dgt)
200
÷
999M
Ω
(*) 1M
Ω
±
(10.0% rdg + 2 dgt)
605V max RMS
(*) For 500VDC test voltage. For 250VDC test voltage the range is: 200
÷
499M
Ω
Autorange
Open circuit voltage: <1.3 x V
0
Accuracy of nominal voltage: –0% +10%
Short circuit current: <3.0mA
Nominal testing current: 1mA @ 1K
Ω
x V (1mA @ 500K
Ω
)
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
÷
1999
Ω
1
Ω
±
(5% rdg + 2 dgt)
100mA
0.1
÷
199.9
Ω
0.1
Ω
±
(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