USER GUIDE 3000A TRUE RMS AC Flexible Clamp Meters Model MA3010 and MA3018
Introduction Thank you for choosing the Extech AC Flexible Clamp meter that can measures up to 3000A AC rms. The MA3018 is the 18” (45.7cm) clamp version and the MA3010 is the 10” (25.4cm) clamp version, otherwise both meters are the same. These devices are professional CAT IV 600V CAT III 1000V instruments that offer Auto Power OFF, Data Hold, and backlight features. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
Safety Information To ensure the safe operation and service of the meter, follow these instructions closely. Failure to observe warnings can result in severe injury. WARNINGS WARNINGS identify hazardous conditions and actions that could cause BODILY HARM or DEATH. Individual protective equipment should be used if HAZARDOUS LIVE parts in the installation where measurements are to be carried out could be accessible.
CAUTIONS CAUTIONS identify conditions and actions that could cause DAMAGE to the meter or equipment under test. Do not expose the meter to extremes in temperature or high humidity. Safety Symbols that are typically marked on meters and instructions This symbol, adjacent to another symbol, indicates the user must refer to the manual for further information.
Description Meter Description 1. 2. 3. 4. 5. 6. Flexible Current Clamp Power‐Hold button Battery Compartment Backlight button LCD display Clamp Lock mechanism 1 Display Icons 6 HOLD A ‐ FULL Data Hold Amperes (Current) Minus symbol (negative) Battery status message (on power up) 3000 Battery status icon 3000 count reading display 5 2 4 3 5 MA3010_MA3018 en‐GB_V1.
Operation NOTES: Read and understand all Warning and Caution statements in this operation manual prior to using this meter. Meter Power The meter is powered by two (2) AAA 1.5V batteries (located in compartment on bottom of meter handle). Press and hold the Power button for > 2 seconds to switch the device ON or OFF. When the meter switches ON the display shows the battery status (FULL, for example). There is also a battery status icon displayed on the lower right hand corner of the LCD.
AC Current Measurements WARNING: Ensure that power to the device under test is OFF before starting this procedure. Switch power to the device under test ON only after the clamp has been safely attached to the device under test. CATUTION: Do not move fingers above the LCD at any time during a test. 1. Switch the meter OFF and switch OFF power to the device under test. 2. Turn the knurled clamp lock mechanism counter‐clockwise to release the flexible clamp. 3.
Maintenance WARNING: To avoid electrical shock, disconnect the meter from any circuit and turn OFF the meter before opening the case. Do not operate the meter with an open case. Cleaning and Storage Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or solvents. If the meter is not to be used for 60 days or more, remove the batteries and store them separately.
Specifications Function AC Current Range Overload Reading (OL) Resolution Accuracy (45 to 500Hz) 30.00 A AC 33.00 A AC 0.01A ±(3.0% + 5 digits) 300.0A AC 330.0 A AC 0.1A ±(3.0% + 5 digits) 3000 A AC 3300 A AC 1A ±(3.0% + 5 digits) Notes: Accuracy is given as ± (% of reading + least significant counts) at 23C ±5C with relative humidity lower than 80%. Accuracy is specified for a period of one year after calibration.
GENERAL SPECIFICATIONS Clamp Jaw Flexible type with locking mechanism and 7.5mm (0.
