Subscribe to Our Youtube Channel
Related Manuals for Megger MJ160
Summary of Contents for Megger MJ160
- Page 1 Major MEGGER ® Insulation Testers MJ159 (212159), MJ160 (212160), MJ359 (212359), MJ459 (212459), MJ559 (212559) User Guide MEGGER ®...
-
Page 2: Table Of Contents
Contents Safety Warnings Specification General Description Accessories Application Notes Operation Preventive maintenance Testing precautions Insulation Testing Concepts Preliminary checks Repair and Warranty Battery condition check (MJ459 and MJ559) Battery replacement (MJ459) Battery Charging (MJ559) Performance checks Voltage measurement Resistance Measurement Insulation testing Using the Guard terminal Fuse Checking and Replacement... -
Page 3: Safety Warnings
Safety Warnings • Safety Warnings and Testing Precautions must be read and understood before the instrument is used. They must be observed during use. • The circuit under test must be switched off, de-energised and isolated before any test connections are made. •... -
Page 4: General Description
Nominal test voltages are 100 V, 250 V, 500 V and 1000 volts position, rotary, range selection switch and a ‘Test push selectable. (MJ160: 50 V, 100 V, 250 V and 500 volts). button. All instruments have a mains (line) voltage measuring range Three shrouded 4 mm terminal sockets marked ‘-’, ’G’... -
Page 5: Operation
Operation TESTING PRECAUTIONS The colour code of the cord is : U.S.A. U.K./ International The circuit under test must be completely de-energized Ground) Green Yellow/Green and isolated before test connections are made. Neutral White Blue Line Black Brown The instruments must only be used by suitably trained and competent persons. -
Page 6: Performance Checks
1 kV range leads are connected to the item under test, any a.c. voltage (MJ160 to 500 V range) press and hold down the ‘Test’ present will be immediately shown. Thus indication is given button, whilst turning the generator handle,(MJ159, MJ160 that the item has not been completely de-energized. -
Page 7: Insulation Testing
Insulation Testing Capacitive circuits automatically discharge through the tester After connecting the test leads to the instrument and carrying when the ‘Test’ button is released. The approximate out the Preliminary Checks: discharge voltage will be indicated on the voltage scale. Wait a few moments for the voltage to decay to zero before 1) Set the selector switch to the required test voltage. -
Page 8: Fuse Checking And Replacement
Operation Fuse checking and Replacement Resistance Circuit Fuse Check Disconnect the test leads and set the rotary selector switch to the ‘Ω’ position. Press the ‘Test’ button and keep it pressed whilst turning the generator handle (hand cranked models). The reading obtained should be beyond full scale. If the reading is approximately zero on the Resistance scale, the 500 mA fuse has ruptured and should be replaced. -
Page 9: Specification
0,1Ω - 2000 MΩ (0,1Ω -1000MΩ for MJ160) Nominal Test Voltages d.c: 100 V, 250 V, 500 V, 1000 V. ( MJ160 only is 50 V, 100 V, 250 V, 500 V) Accuracy: 250 V, 500 V, 1000 V +30%, -0% maximum... - Page 10 True d.c. voltage equals scale reading divided by 2,22 Accuracy: 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 50/60 Hz mains...
- Page 11 Fuses: 500 mA (FF) 660 V Ceramic 50 kA HBC 1 ins x ins (32 mm x 6 mm) 7A (F) 440 V Ceramic 10kA HBC 1 ⁄ ins x ⁄ ins (32 mm x 6 mm) 100 mA (F) HBC 20 mm x 5 mm (for line protection only) MJ359 and MJ559 only: Power connection plug fuse - 100 mA 240 V HBC ⁄...
-
Page 12: Accessories
Accessories SUPPLIED WITH THE INSTRUMENT PART NUMBER User Guide 6172-113 Test lead set (3 leads, 3 prods, 3 clips) 6220-436 Power cord (Where applicable) 25970-002 (U.S.17032) Test Record Card (5 supplied) 6172-111 (U.S. 210949) AVAILABLE AS AN OPTIONAL EXTRA Carrying case 6420-043 (U.S.217740) Test Record Card (Pack of 20) -
Page 13: Application Notes
Application Notes Preventive Maintenance The proverb ‘A stitch in time saves nine’ inspired the title of AVO INTERNATIONAL an AVO INTERNATIONAL booklet on insulation testing, Insulation Test Record as it neatly sums up the benefits of preventative Equipment..........Rating....maintenance. -
Page 14: Insulation Testing Concepts
Application Notes Insulation Testing Concepts Absorption current. This current is also initially high but Insulation resistance can be considered by applying Ohm’s drops at a much slower rate than the charging current. Law. The measured resistance is determined from the applied voltage divided by the resultant current, Conduction or Leakage current. -
Page 15: Repair And Warranty
A number of independent instrument repair companies have protection of an instrument has been impaired it should not been approved for repair work on most MEGGER® be used, and be sent for repair by suitably trained and instruments, using genuine MEGGER® spare parts. Consult qualified personnel. - Page 16 This instrument is manufactured in the United Kingdom. The company reserves the right to change the specification or design without prior notice. MEGGER is a registered Trade Mark of AVO INTERNATIONAL LIMITED. Copyright ©, AVO INTERNATIONAL LIMITED. Part No. 6172-113 - Edition 7 - Printed in England - 10GG...
Need help?
Do you have a question about the MJ160 and is the answer not in the manual?
Questions and answers