Major tech MT390 - Measurement Specifications (cont. 2); Voltage and Frequency Specs; Insulation Resistance Specs; Low Ohm Specs

7
Insulation
Low Ohm
Earth Resistance
Terminal Voltage
125V(0%~+10%)
250V(0%~+10%)
500V(0%~+10%)
1000V(0% +10%)~
Range
0.125~4.000 MΩ
4.001~40.00 MΩ
40.01~400.0 MΩ
400.1~1000 MΩ
0.250~4.000 MΩ
4.001~40.00 MΩ
40.01~400.0 MΩ
400.1~1000 MΩ
0.500~4.000 MΩ
4.001~40.00 MΩ
40.01~400.0 MΩ
400.1~1000 MΩ
1.000~4.000 MΩ
4.001~40.00 MΩ
40.01~400.0 MΩ
400.1~1000 MΩ
Resolution
0.001MΩ
0.01MΩ
0.1MΩ
1MΩ
0.001MΩ
0.01MΩ
0.1MΩ
1MΩ
0.001MΩ
0.01MΩ
0.1MΩ
1MΩ
0.001MΩ
0.01MΩ
0.1MΩ
1MΩ
Accuracy
( %+10)
(2%+10)
(4%+5)
(5%+5)
( %+10)
(2%+10)
(3%+ )
(%+)
( %+10)
(2%+10)
(%+)
(4%+5)
( %+10)
(2%+10)
(%+)
(4%+5)
±3
±
±
±
±3
±
±2
±3 2
±3
±
±3 2
±
±3
±
±3 2
±
Test Current
1mA @load125kΩ
1mA @load250kΩ
1mA @load500kΩ
1mA @load1MΩ
1mA
Short circuit
current
≤
≤
≤
≤
1mA
1mA
1mA
Range
0.000~4.000Ω
2.00~40.00Ω
20.0~400.0Ω
Resolution
0.001Ω
0.01Ω
0.1Ω
Accuracy
(1.5%+30)
(%+)
±
± 1.5 3
Max. Open Circuit Voltage
5.8V±1VDC
Overload Protection
250Vrms
Range
0.00~99.99
100.0~999.9
Ω
Ω
1000~2000Ω
Resolution
0.01Ω
0.1Ω
1Ω
Accuracy
(2%+30d)
(2%+6d)
±
±
Accuracy of the Current of the RCD: ± (5% of reading + 1digits)
Resolution of the RCD Timing: 0.1ms
Voltage and Frequency
Measurement Range
(V)/AC-DC
80 500~
Resolution(V)
1
Accuracy
±(2% of reading +2digits)
Measurement Range
(Hz)
45 65~
Resolution(Hz)
1
Accuracy
±2Hz
Multifunction Tester User Manual