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Summary of Contents for Extech Instruments 380260-NIST
- Page 1 User Guide Model 380260 Insulation Tester / Megohmmeter...
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Page 2: Meter Description
Introduction Congratulations on your purchase of Extech’s Insulation Tester/Megohmmeter. The Model 380260 provides three test ranges plus continuity and AC/DC voltage measurement. A handy test lock feature and a data hold function are also included. This professional meter, with proper care, will provide years of reliable service. -
Page 3: Operation
Operation Warning Ensure that the circuit under test does not include components that can be damaged by 1000VDC; such devices include power factor correction capacitors, low voltage mineral insulated cables, electronic light dimmers, and ballasts/starters for fluorescent lamps. Connecting Test Leads For all measurements, connect the red test lead to the V... - Page 4 Notes on IR (Megohmmeter) testing: The maximum measurement range for the 380260 is 2000MΩ. Frequently, insulation resistance will exceed this value. When this happens, the display will indicate “1”, meaning the resistance is very high and the insulation being tested is good. If the device being tested is highly capacitive, the display will indicate an increasing resistance value over time.
- Page 5 Applications Measuring Power Tools and Small Appliances This section applies to any device under test that uses a line cord. For double insulated power tools, the meter’s leads should be connected to the device’s housing (chuck, blade, etc.) and the lines of the power cord.
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Page 6: Maintenance
Testing Cables Disconnect the cable under test from the line. Disconnect the opposite end of the cable to avoid errors as a result of leakage from other equipment. Check each conductor to ground and/or lead sheath by connecting one meter lead to ground and/or lead sheath and the other meter lead to each of the conductors in turn. -
Page 7: General Specifications
General specifications Display LCD with dual display Sampling rate 2.5 readings per second Ω, short circuit current <200mA, open circuit voltage 4.5V Continuity beeper ‘1’ displayed Over range indicator Zero adjust Automatic Low battery indicator Low battery symbol displayed when battery voltage is low Environmental Installation category II, Pollution Degree 2, Altitude up to 2000 meters, Indoor use only... -
Page 8: Specifications
Specifications Range Specifications Accuracies are specified as % reading + digits at 23 C ± 5 C < 80% RH MEGOHMMETER RANGES Range Resolution Accuracy Terminal Voltage 200M250VDC 0.1M ±3% + 5d 250V + 20% ~ -0% 200M500VDC 0.1M ±3% + 5d 500V + 20% ~ -0% ±3% + 5d 1000V + 20% ~ -0%... -
Page 9: Two Year Warranty
Two-year Warranty FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship for two years from date of shipment (a six-month limited warranty applies to sensors and cables). To view the full warranty text please visit: http://www.extech.com/support/warranties. Calibration and Repair Services FLIR Systems, Inc.