Introduction

Congratulations on your purchase of the Extech 380976 Power Clamp-On Meter. This device measures 1Φ/3Φ Power (True, Apparent, and Reactive), Horsepower, Phase Angle, True RMS Current/Voltage, Resistance, Capacitance, Frequency, & Temperature. Power measurements can be achieved on 3- or 4-wire configurations. Please read the entire manual to get the most from the meter’s wide array of capabilities. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.

Table of Contents

 

Warranty

3

Safety Information

3

Meter Description

4

AC + DC Voltage Measurements

5

AC Current Measurements

5

1Φ KW, KVA, KVAR, Power Factor & Phase Angle Measurement

6

3-Wire KW, HP, KVA, KVAR, Power Factor & Phase Angle Measurement

7

4-Wire KW, HP, KVA, KVAR, Power Factor & Phase Angle Measurement

10

Resistance and Audible Continuity Measurements

13

Capacitance Measurements

14

Diode Tests

14

Temperature Measurements

14

AC and DC µA Current Measurements

14

Meter Control Keys

15

Automatic Sleep Mode and Battery Replacement

16

Specifications

17

Calibration, Repair, and Technical Support Services

20

2

380976

V3.1

6/08

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HP Extech 380976 manual Introduction, Table of Contents