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380940-EU-EN-V4.1-4/12 

Range Specifications 

Function Range 

Resolution  Accuracy 

Overload 

protect 

40kW 

10W 

±(1.5% + 3dgts) 

250V, 400A 

Note: 50/60Hz, PF 0.6 to 1, Vpeak < 360V 

240kW 

100W 

±(1.5% + 3dgts) 

600V, 400A 

Note: 50/60Hz, PF 0.6 to 1, Vpeak < 850V 

40kW 

10W 

±(2.5% + 3dgts) 

250V, 400A 

Note: 40Hz to 100Hz, PF 0.6 to 1, Vpeak < 360V 

240kW 

100W 

±(2.5% + 3dgts) 

600V, 400A 

AC Power 

Note: 40Hz to 100Hz, PF 0.6 to 1, Vpeak < 850V 

40kW 

10W 

±(1.5% + 3dgts) 

250V, 400A 

DC Power 

240kW 

100W 

±(1.5% + 3dgts) 

250V, 400A 

DC Current 

400A 

100mA 

±(1.5% + 3dgts) 

600A DC 

 

50/60Hz 

40 to 100Hz 

 

AC Current 

True RMS, Crest factor 
< 4

 

400A 

100mA 

±1.5% ±3dgts 

±2.5% ±4dgts 

600A AC 

DC Voltage 

400V 

0.1V 

±(1.0% + 2dgts) 

800V DC 

 

50/60Hz 

40 to 1kHz 

 

AC Voltage 

True RMS, Crest factor 
< 4, Input impedance 

10M  

600V 

1V 

±(1.5% + 2dgts) 

±(2.0% + 4d) 

800V AC 

Frequency 

10Hz - 10kHz 

0.01- 10Hz 

±(0.8% + 2dgts) 

Sensitivity 10V 

600V AC 

 

 
 

Copyright 

©

 2012 Extech Instruments Corporation (a FLIR company) 

All rights reserved including the right of reproduction in whole or in part in any form. 

www.extech.com 

 
 

 
 
 
 
 

Содержание 380940

Страница 1: ...User s Guide True RMS AC DC Power Clamp Meter Model 380940 ...

Страница 2: ...es 3 DO NOT measure voltage if the voltage on the COM input jack exceeds 500V above earth ground 4 NEVER connect the meter leads across a voltage source while the function switch is in the current mode Doing so can damage the meter 5 ALWAYS discharge filter capacitors in power supplies and disconnect the power when measuring 6 ALWAYS turn off the power and disconnect the test leads before opening ...

Страница 3: ...RO button Zeroes the DCA reading 5 Positive input jack for red test lead 6 Function select dial 7 HOD button freezes the displayed reading 8 MAX MIN button Press to track and view highest and lowest readings 9 LCD Display with function indicators and bargraph 10 COM input jack for black test lead Function Select Switch ...

Страница 4: ...Bargraph display The 40 segment bargraph display shown below is a graphical interpretation of the measurement It is displayed under the display digits on the LCD The bars in the bargraph indicate a presence of an electronic signal The more bars showing the higher the signal The digits below the graph help the user see how many bars are showing If 40 segments are showing the bars will reach the 40 ...

Страница 5: ...ts WARNING To avoid electric shock disconnect the test leads from the meter before making current measurements 1 Set the Function switch to the AC Current position 2 Press the jaw trigger and clamp around a single conductor fully enclosing it Do not allow a gap between the two halves of the jaw 3 Read the ACA value on the LCD DC Current Measurements WARNING To avoid electric shock disconnect the t...

Страница 6: ... the meter s input terminals 3 Connect the other ends of the test leads in parallel with the device circuit under test 4 Read the Frequency measurement on the LCD in Hz MIN MAX Function Pressing the MIN MAX key allows the meter to display ONLY the highest and the lowest readings encountered Press the MIN MAX key once to view the minimum reading press it again to view the maximum reading Note that ...

Страница 7: ...tteries accumulators are sold Disposal Follow the valid legal stipulations in respect of the disposal of the device at the end of its lifecycle Cleaning Use only a dry cloth to clean the plastic case Specifications General Specifications Display 3 3 4 digit 4000 count LCD with 40 segment bargraph Functions Watts ACA DCA ACV DCV Frequency Polarity indicates negative polarity positive assumed Curren...

Страница 8: ...50V 40kW 10W 1 5 3dgts 250V 400A DC Power 240kW 100W 1 5 3dgts 250V 400A DC Current 400A 100mA 1 5 3dgts 600A DC 50 60Hz 40 to 100Hz AC Current True RMS Crest factor 4 400A 100mA 1 5 3dgts 2 5 4dgts 600A AC DC Voltage 400V 0 1V 1 0 2dgts 800V DC 50 60Hz 40 to 1kHz AC Voltage True RMS Crest factor 4 Input impedance 10M 600V 1V 1 5 2dgts 2 0 4d 800V AC Frequency 10Hz 10kHz 0 01 10Hz 0 8 2dgts Sensit...

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