English Datasheet

400A AC/DC Watt Clamp-on
Measures Watts, Current, and Voltage
With AC/DC True Power measurements to 240kW
Features:
• True RMS AC Voltage and Current
• 0.9" (23mm) jaw opening
• Large 4000 count LCD display
• Fast 40 segment analog bargraph
• Data Hold, Max/Min recall,
Auto Zero (DC current), plus
low battery indication
• Frequency to 10kHz
• Auto power off
• Complete with test leads,
2 AA batteries, and carrying case
Specifications: Range
AC Power
40kW
240kW
DC Power
40kW
240kW
AC Current
400A
DC Current
AC Voltage
DC Voltage
Frequency
Dimensions
Weight
Resolution
10W
100W
10W
100W
0.1A
Accuracy ±(%rdg+digits)
±(1.5% + 3d)@50/60Hz
±(1.5% + 3d)@50/60Hz
±(1.5% + 3d)
±(1.5% + 3d)
±(1.5% + 3d)@50/60Hz
400A
0.1A
±(1.5% + 3d)
600V
1V
±(1.5% + 2d)@50/60Hz
400V
0.1V
±(1.0% + 2d)
10kHz
0.01-100Hz
±(0.8% + 2d)
7.2 x 2.5 x 1.4" (183 x 64 x 36mm)
6.7oz (190g including batteries)
Input Signal Range
0-250V, 0-400A, PF 0-1
0-600V, 0-400A, PF 0-1
0-250V, 0-400A
0-600V, 0-400A
Overload protection: 600A AC
(AC frequency range 40Hz-1kHz)
Overload protection: 600A DC
Overload protection: 800V AC
Overload protection: 800V DC
Overload protection: 600V AC
Ordering Information:
380940................400A AC/DC Watt Clamp-on
380940-NIST ......380940 with Calibration Traceable to NIST
www.extech.com
Specifications subject to change without notice.
7/27/10 - R1
Copyright © 2010 Extech Instruments Corporation. All rights reserved including the right of reproduction in whole or in part in any form.
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