User Manual
Model 380943
High Resolution 60 Amp AC Clamp-on Meter
• 4000 Count Display with 10uA Resolution
• 20 reading per second bargraph
• Shielded transformer jaws
• Selectable filter circuit
• MAX/MIN, Relative, & Hold functions
• 1.2” (30mm) jaw diameter
Introduction
Thank you for selecting the Extech 380943 AC Clamp Meter. This device is ideal for
checking leakage, ground, and sheath current. This professional meter, with proper care,
will provide years of safe reliable service.
Model 380943 Ver. 2.1 11/2002
2
Specifications
General Specifications
Display 3-3/4 digit (4000 count) LCD with 40 segment bargraph
Functions ACA, ACV, Resistance, and Continuity
Polarity Minus sign ( - ) indicates negative polarity
Overload indication Left blinking digit
Relative Mode ZERO front panel key
Display rate 2 readings per second (20 readings per second for bargraph)
Battery Two 1.5V AA batteries
Operating conditions 40F to 1220F (-100C to 500C); < 85% Relative Humidity
Storage conditions - 40F to 1400F (-200C to 600C); < 75% Relative Humidity
Altitude Operate at less than 2000 meters (Indoor use only)
Power consumption Approximately 10mA DC
Weight 7 oz. (200g) including battery
Dimensions 8.3 x 2.4 x 1.4” (210 x 62 x 35.6mm) (HWD)
Jaw opening 1.2” (30mm)
Standards IEC 1010 Category III 300V, Category II 600V
Range Specifications
Range / Resolution Accuracy
50/60Hz
Accuracy
40Hz to 1Khz
Overload
Protection
AC Current
40.00mA ± (1.0% + 3 digits)
± (2.0% + 5 digits)
400.0mA
± (1.0% + 3 digits) ± (2.0% + 3 digits)
4.000A
± (1.0% + 3 digits) ± (2.0% + 3 digits)
40.00A
± (1.0% + 3 digits) ± (2.0% + 3 digits)
60.0A (0 to 50A)*
± (1.5% + 3 digits) ± (3.0% + 5 digits)
60.0A (50 to 60A)*
± (3.0% + 5 digits) ± (3.5% + 5 digits)
100A AC
AC Voltage
400.0V ± (1.5% + 2 digits) ± (2.0% + 4 digits) 800V AC
Resistance and Continuity
Range Accuracy Audible
Continuity
Overload
Protection
40.0 to 400.0Ω
± (1.5% + 2d)
Beeps < 38Ω
600V AC
Specification Notes
• Open Circuit Voltage: 0.4V
• AC Voltage Input Impedance: 10MΩ
• Accuracy specified at 25
o
C
* Displays over 60A are possible but the accuracy of such measurements is not specified
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