HP Extech 380976 manual AC + DC Voltage Measurements, AC Current Measurements

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Measurements

AC + DC Voltage Measurements

WARNING

The maximum input is 600V. Do no attempt voltage measurements above this limit. Exceeding this limit could cause electrical shock and damage to the meter.

1. Set the rotary switch to the ‘ V’ position.

2. Insert the test leads into the meter’s input jacks. (Black to ‘COM’ and Red to ‘V’)

3. Connect the test leads to the measured circuit.

4. The meter will automatically detect and display AC or DC voltage. The meter will also automatically select the appropriate range.

5. Read the voltage (main display) and frequency (upper, smaller display digits) on the LCD.

NOTE: The sensitivity for Automatic AC/DC Voltage detection is 1V. Voltage below 1V may indicate DC.

NOTE: The sensitivity for voltage measurements is 1.2V and the frequency range is 40Hz to 1 KHz. If the frequency is less than 40Hz the LCD may display ‘Hz’.

AC Current Measurements

1.Set the rotary switch to the "~A" position.

2.Press the Trigger to open the jaw.

3.Fully enclose the conductor that is being measured in the jaw. No gap should exist between the two jaw halves. The conductor under test must be a single wire; if there are multiple wires in a cable the conductor must first be isolated (see diagram below).

4.The meter selects the range automatically.

5.Read the measured current (main display) and frequency (upper display) on the LCD.

NOTE: The sensitivity for current measurements is 6A and the frequency range is

40Hz to 400Hz. If the frequency is less than 40Hz the LCD may display ‘Hz’.

5

380976

V3.1

6/08

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Contents 1Φ/3Φ 1000 Amp True RMS Power Clamp-On Model Introduction Table of ContentsWhen servicing, use only specified replacement parts WarrantySafety Information Meter Description AC Current Measurements MeasurementsAC + DC Voltage Measurements 380976 V3.1 380976 V3.1 KVA 3φ 3W KW+PF Power Factor, KW+KVAR, KVA+θPhase Angle or A+V380976 V3.1 380976 V3.1 380976 V3.1 380976 V3.1 Resistance and Audible Continuity Measurements KVA 3φ 4WCapacitance Measurements Temperature MeasurementsDiode Tests AC and DC µA MeasurementsRange Key Meter Control KeysHold MX/MN Key Battery Replacement Automatic Sleep Mode and Battery ReplacementAuto Sleep Disable Specifications AC Current 50Hz to 400Hz True RMS Measurement SpecificationsΜA True RMS AC+DC AC Voltage 50Hz to 400Hz True RMS1Φ/3Φ True Power PF 0.5 or 60o 50/60Hz Temperature K-Type thermocouple1Φ/3Φ Horse Power HP PF 0.5 or 60o 50/60Hz 1Φ/3Φ Reactive Power Kvar PF 0.5 or 60o 50/60Hz1Φ/3Φ Apparent Power KVA Calibration and Repair ServicesPhase Angle 50/60Hz Frequency