Major MT750 Manual de instruções
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INSTRUCTION MANUAL
DIGITAL CLAMP METER
MT750
Current Sensor
Barrier
Trigger
Data Hold Key
Function Switch
Mode Key
LCD
MT750
Snap Band
V/Ω Terminal
COM Terminal
Barrier of Test Leads
Cap
Barrier
It is a part providing protection against electrical
shock and ensuring the minimum required air and
creep age distances.
WARNING
Read through and understand the
instructions contained in this manual
before using the instrument.
1. Specification
Accuracy guaranteed
100% Or less of range
Temperature 23 ± 5°C
-
Humidity 45
75%
ACA (Auto Range)
Range
Accuracy
-
±1.4 %rdg±6dgt
40A
0.00, 0.03
41.99A
(50/60Hz)
-
400A
32.0
419.9A
±1.6 %rdg±6dgt
-
-
1000A
320
1049A
(45
65Hz)
Input protective current ：AC1200A
ACV (Auto Range)
Range
Accuracy
-
4V
0.000, 0.005
4.199V
±1.8 %rdg±7dgt
-
-
40V
3.20
41.99V
(45
65Hz)
-
±2.3 %rdg±8dgt
400V 32.0
419.9V
-
-
(65
500Hz)
600V 320
629V
DCV (Auto Range)
Range
Accuracy
-
±0.0
±419.9mV
400mV
*1
-
±0.320
±4.199V
4V
-
±3.20
±41.99V
40V
±1.0%rdg±3dgt
-
±32.0
±419.9V
400V
-
±320
±629V
600V
*1 : Accuracy is not guaranteed
ACV/DCV / input impedance
：>100MΩ (400mV Range)
：11MΩ (4V Range)
：10MΩ (40/400/600V Range)
Resistance（Auto Range）
Continuity
Range
Accuracy
-
400Ω
0.0
419.9Ω
-
4kΩ
0.320
4.199 kΩ
±2.0%rdg±4dgt
-
40kΩ
3.20
41.99 kΩ
-
400kΩ
32.0
419.9 kΩ
-
±4.0%rdg±4dgt
4MΩ
0.320
4.199 MΩ
-
±8.0%rdg±4dgt
40MΩ
3.20
41.99 MΩ
Bz threshold value
-
Cont.
0.0
419.9Ω
50±30Ω
Open-loop voltage
：<3.4V (400Ω / Cont Range)
：0.7V typ (4kΩ Range)
-
：0.47V typ (40k
40MΩ Range)
Input protective voltage
：AC/DC600V / 10 sec
●Measuring method 2 Dual integration
●Over-range indication OL
●Measurement cycle / 2.5 times per second
0
●Applicable Standards
IEC/EN 61010-1/ 61010-2-032/ 61010-031
/61010-2-030
2 / Pollution degree 2
Indoor use
Altitude up to 2000m
Current measurement section CAT.III 600V
Voltage measurement section
CAT.II 600V / CAT.III 300V
EN61326 (EMC)
RF 3V/m 5
In the radio-frequency electromagnetic field of
3V/m, accuracy is within five times the rated
accuracy.
●Withstand voltage
AC5320Vrms 5
AC3540Vrms 5
AC5320Vrms 5sec between current sensor and
enclosure
AC3540Vrms 5sec between circuit and enclosure
●Insulation resistance >100MΩ /
between enclosure and electrical circuit
●0～40°C 85%
Operating Temperature and humidity range
0 to 40°C 85%RH or less (no condensation)
●-20～60°C 85%
Storage Temperature and humidity range
-20 to 60°C 85%RH or less (no condensation)
●Power source
DC3V：4×2 / R03/LR03 (AAA) ×2
●Current consumption < 3mA
●Battery life 350 (ACA / Approx. 350 hours (ACA,
continuous, no load)
●Dimension, Weight 190(L)×68(W)×20(D)mm
approx. 120g / including batteries）
●Accessories
Test leads Model 7107A
Battery R03(AAA)
Instruction manual
Carrying case Model 9160
2. Other Function
●Data Hold
Press the Data Hold Key to freeze the reading.
Press the Data Hold Key again to release the
freezing display.
LCD
/ indicated "
" on LCD
●Low battery indication
2.3±0.15V LCD "
"
indicated "
" on LCD at 2.3±0.15V or less
●Sleep Function
10。ON LCD "
" 2
Automatically powered off in about 10min after.
To disable the sleep function, power the
instrument on with the Data Hold Key pressed.
(indicated "
" for about 2 seconds on LCD)
3. ACA / Measurement
DANGER
Never measure current while the test leads are
inserted into the V/Ω and/or COM Terminals.
1set
2pcs
1pce
1pce