HT instruments М75 - Manual (Page 42)

M72 - M73 - M74 - M75
EN - 40
6. TECHNICAL SPECIFICATIONS
Accuracy is indicated as [%reading + (digit number*resolution)] at: 23°C±5°C, <70%HR.
DC/AC TRMS Voltage
Range Resolution
Accuracy
DC
Accuracy
(30  70Hz)
Accuracy
(70  400Hz)
Input
impedance
1.0  999.9mV 0.1mV
(0.5rdg+2dgt) (1.0rdg+2dgt) (2.0rdg+2dgt) 1M
1.000  9.999V 0.001V
10.00  99.99V 0.01V
100.0  605.0V 0.1V
MAX, MIN, AVG, PEAK, resolution: (5.0% rdg + 10 dgt); responce time: 500ms (MAX, MIN, AVG),1ms (PEAK)
Max crest factor: 3.0: V<1.0V; 1.5: V≥1.0V
DC/AC TRMS Current (with external jaws)
Range Resolution
Accuracy
DC
Accuracy
(30  70Hz)
Accuracy
(70  400Hz)
Input
impedance
Overload
protection
1.0  999.9mV 0.1mV (0.5rdg+
2dgt)
(1.0 rdg +
2 dgt)
(2.0 rdg +
2 dgt)
1M 
605V AC
max RMS 1.000  1.200V 0.001V
NOTE The mentioned accuracy does not consider the transducer's accuracy. Please refer to its user's manual
MAX, MIN, AVG, PEAK, resolution:
(5.0% rdg + 10 dgt); responce time: 500ms (MAX, MIN, AVG),1ms (PEAK)
Minimum input current: 1mV x transduction ratio of the clamp
Max crest factor: 3.0: V<1.0V; 1.5: V≥1.0V
Frequency measurement with test leads
Range Resolution Accuracy Input impedance
30.0  199.9Hz 0.1Hz
(0.5rdg + 2dgt) 1M 
200  400Hz 1Hz
Input voltage: 1mV  605.0V
Frequency measurement with jaws
Range Resolution Accuracy Overload protection
30.0  199.9Hz 0.1Hz
(0.5rdg + 2dgt) 605V AC max RMS
200  400Hz 1Hz
Input voltage: 1mV  1V
Resistance and continuity test
Range Resolution Accuracy Buzzer Overload protection
0.00  39.99  0.01
(1.0%rdg + 5dgt) R<40  605V AC max RMS for 1 minute
40.0  399.9  0.1
400  3999  1 
4.00  39.99 k 10
Phase sequence and phase conformity
Measuring method Working voltage (V) System
1 test lead (1W) 90  315 (Phase - Ground)
up to 315 V (Phase - Ground)
up to 550V (Phase - Phase)
2 test leads (2W) 90  315 (Phase - Neutral)
up to 315 V (Phase - Neutral)
up to 550V (Phase - Phase) (*)
Max crest factor: 1.5 ; Frequency range: 45  65 Hz
(*) 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
 0.2A: Continuity with 200mA (M72, M74, M75)
Range Resolution Accuracy Overload protection
0.00  19.99 0.01
(5.0% rdg + 3 dgt) 605V max RMS
20.0  99.9 0.1
Test current: >200mA DC up to 5  (measuring cables resistance included)
Accuracy of current measurement: 1mA
Open circuit voltage: 4 < V
0
< 24V