Megger MJ159 User Manual Download Page 1 | Manualshive

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Major MEGGER

®

Insulation Testers

MJ159 (212159), MJ160 (212160), MJ359 (212359), MJ459 (212459), MJ559 (212559)

User Guide

MEGGER

®

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Summary of Contents for MJ159

Page 1: ...Major MEGGER Insulation Testers MJ159 212159 MJ160 212160 MJ359 212359 MJ459 212459 MJ559 212559 User Guide MEGGER...

Page 2: ...MJ559 5 Battery replacement MJ459 5 Battery Charging MJ559 5 Performance checks 6 Voltage measurement 6 Resistance Measurement 6 Insulation testing 7 Using the Guard terminal 7 Fuse Checking and Repla...

Page 3: ...cuit connections must not be touched during a test Circuits must be discharged before disconnecting the test leads Replacement fuses must be of the correct type and rating When making a voltage measur...

Page 4: ...e dayglow needle indicates the resistance value being measured MJ159 and MJ160 are powered by a low voltage hand cranked brushless a c generator which is connected after rectification to a d c to d c...

Page 5: ...ow Green Neutral White Blue Line Black Brown If using a fused plug a 13 Amp fuse to BS1362 should be fitted PRELIMINARY CHECKS Battery Condition Check MJ459 MJ559 Before initial use of MJ559 charge th...

Page 6: ...resistance value the leads may be open circuit and should be inspected further Replace them if necessary Shorting the leads together and obtaining a zero reading also shows that the instrument is work...

Page 7: ...ings are taken after pressing the Test button there is no other control to operate Capacitive circuits automatically discharge through the tester when the Test button is released The approximate disch...

Page 8: ...sulation Circuit Fuse Check 1 Connect the test leads together and set the rotary selector switch to a M position 2 Press the Test button and keep it pressed whilst turning the generator handle hand cr...

Page 9: ...250 V 500 V 1000 V 30 0 maximum 50 V 100 V 40 0 maximum Midscale 4 M 2 M for MJ160 Short Circuit Current 1 9 mA 0 65 mA for MJ160 Test Voltage characteristics Accuracy 1 25 of fsd on a 2 8 in 71 1mm a...

Page 10: ...uracy 2 5 of full scale Power Supplies MJ159 and MJ160 Low voltage brushless a c generator Cranking speed between 130 rpm and 170 rpm MJ359 Dual operation low voltage brushless a c generator or 120 V...

Page 11: ...11 4 ins x 1 4 ins 32 mm x 6 mm E M C The instruments meet EN 50081 1 and EN 50082 1 1992 Operating Temp Range 32 to 113 F 0 to 45 C for battery operated models 14 to 122 F 10 to 50 C Humidity Range O...

Page 12: ...L EXTRA Carrying case 6420 043 U S 217740 Test Record Card Pack of 20 6111 216 Black test lead with large alligator clip 6220 295 Red test lead with large alligator clip 6220 586 Green test lead with...

Page 13: ...Insulation tests are sometimes used in isolation as absolute measures of the quality of the insulation This is most appropriate when equipment is being installed and checked for compliance with a spe...

Page 14: ...r the surface of the insulation material As the total current depends upon the time for which the voltage is applied Ohm s Law theoretically applies at infinite time The charging current falls relativ...

Page 15: ...AVO INTERNATIONAL Archcliffe Road Valley Forge Corporate Centre Dover 2621 Van Buren Avenue Kent CT17 9EN Norristown PA 19403 England U S A Tel 44 0 1304 502243 Tel 1 610 676 8579 Fax 44 0 1304 207342...

Page 16: ...s MeterCenter com Website http www MeterCenter com This instrument is manufactured in the United Kingdom The company reserves the right to change the specification or design without prior notice MEGGE...

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