SMG5, Digital Megohm Meter

Overview: The Fieldpiece Digital Megohm Meter, model SMG5, is a compact standalone meter designed for checking HVAC compressor insulation. The SMG5 provides a 1000V voltage source, monitors current, and displays the resistance between the test points. Maximum current output is How Does it Work? Disconnect the windings and measure the resistance between the windings and ground through the insulation. Determine what a "good" reading is by comparing your reading to values supplied by the manufacturer of the equipment or from your own experience. Noticing decreasing insulation resistance levels can forecast problems before catastrophic failure. Why a Digital Multimeter (DMM) Often Isn't Enough To test resistance, a DMM supplies low voltage (<1V) to the test points and is capable of delivering only a few milliamps. It's not a high enough voltage to detect high resistance problems that might indicate moisture and other contaminants and it's not enough current to measure lower values of resistance. Features and Benefits Predict compressor failure 1000VDC stresses insulation to measure up to 2000Mohms Backlit LCD display Auto-off to extend battery life Case, alligator clip, leads with removable tips What's Included: Megohm Meter - SMG5 (2) Probe tips (1) Ground lead with detachable tip (1) Alligator probe tip (4) 1.5V(AAA) batteries (installed) Carrying Case Operator's manual For additional technical specifications, please see "User Guide" in the manuals tab above.