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MV107101 Multi-Function Digital Megohmmeter
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Its simplicity of operation, accuracy, mechanical and electrical ruggedness, safety features
The MG 251 is a technology advanced hand held multi-function test instrument for measuring insulation resistance at test voltages of 250, 500 and 1000 volts. Additionally, it can be used to measure AC voltage, DC voltage and low resistance (continuity). Its simplicity of operation, accuracy, mechanical and electrical ruggedness, safety features, and multiple ranges and functions make it the ideal instrument for maintenance and repair electricians and technicians.

Primary uses include testing power apparatus such as cables, motors, panel boards, switch gears, meters, relays and control circuits. Other applications include testing traffic control equipment, telephone and telegraph equipment, aircraft and airport equipment and wiring, railroad signalling equipment and lighting circuits. The MG 251 comes complete with carrying case, test leads, 4 test clips, 2 test probes, 6 AA batteries and spare fuse.

 
SPECIFICATIONS

Insulation Tests

Test Voltages switch selected, 250,500 and 1000 volts DC.
Two Insulation Ranges autoranging, 0.1-199.99/1999M¥Ø. Autoranging at 150M¥Ø nominal. Open circuit or infinity displayed as overranging. "1''
Accuracy  ¡¾2% of reading, ¡¾1 digit up to 2000M¥Ø. ¡¾3% of   reading, ¡¾1 digit from 200M¥Ø up to 1000M¥Ø. ¡¾5%   of reading,m ¡¾1 digit from 1000M¥Ø up to 1500M¥Ø.   ¡¾10% of reading, ¡¾1 digit from 1500M¥Ø up to   2000M¥Ø
Regulation Of Test Voltage 250V ¡¾10% with 5M¥Ø or greater load. 1000V ¡¾10%with 20M¥Ø or greater load
Short Circuit Current 0.08 ma nominal at all test voltages
Discharging Time 0.5 seconds nominal. Instrument automatically discharges item under test when test voltage is turned off
Low Resistance (Continually)
Measurements
Two Ranges autoranging 0.01-19.99/199.9 ¥Ø. Autoranging at 15   ¥Ø nominal
Accuracy  ¡¾1% of reading, ¡¾1 digit plus test lead resistance.
AC Voltage Measurements
Two Ranges autoranging 0.1-199.9/600 volts. Autoranging at 150   volts nominal
Accuracy  ¡¾1% of full scale (200V) up to 200 volts or ¡¾15% of   full scale (600V) above 200 volts
Input Impedance 9M¥Ø
DC Voltage Measurements
Two Range autoranging 0.01-19.99/199.9 volts
 autoranging at 15 volts nominal
Accuracy  ¡¾1% of reading, ¡¾1 digit for measurements above 1   volt
Input Impedance 1.8M¥Ø nominal

CAT NO. MODEL DEscRIPTION AVAIL PRICE
MV107101   DMH-251   MULTI-FUNCTION DIGITAL MEGOHMMETER   Yes   1,630,800
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DAVIS Á¾ÇÕ °èÃø±â - Çѱ¹´ë¸®Á¡ ÄÚ¸°½º°è±â(ÁÖ)
 
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