Megger ATEC 210415 Series, Руководство пользователя

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AVTM21-415Ja Rev. A June 2005
10 APPLICATION NOTES......................................................................41
Theory of Insulation Testing ................................................................. 41
Applying the Test Set.............................................................................. 42
Measuring an Ungrounded Test Item................................................... 43
Generalized Combined 2 and 3 Terminal Measurement................... 45
11 ROUTINE MAINTENANCE............................................................47
Introduction.............................................................................................. 47
Inspection and Maintenance Procedure............................................... 47
12 TROUBLESHOOTING AND REPAIR..........................................51
General ...................................................................................................... 51
Case Repairs.............................................................................................. 52
Repairs to Components of Chassis and Panel..................................... 52
Changing Line Voltage Tap (-47 Models Only).................................. 53
Replacement of Output Cable W101.................................................... 53
Replacement of Power Cord W1........................................................... 54
Replacement of Meters or Meter Amplifier Board ............................ 55
Replacement of Megohmmeter Range Circuit.................................... 55
Replacement of Voltmeter Range Circuit............................................ 56
Replacement of Stabilizing Switch S1................................................... 56
Replacement of Circuit Breakers........................................................... 56
Replacement of Voltage Control Autotransformer T1...................... 57
Replacement of the K2 Assembly ......................................................... 57
Replacement of Chassis-Mounted Assemblies.................................... 58
Replacement of Circuit Card U2........................................................... 58
Calibration of Voltmeter......................................................................... 58
Calibration of Megohmmeter................................................................. 59
Adjustment of R1 in Stabilization Network........................................ 61
Trouble Location ..................................................................................... 63
13 PERFORMANCE CHECK.................................................................69
14 PARTS LIST............................................................................................71
15 WARRANTY AND REPAIRS............................................................73
Warranty.................................................................................................... 73
Repairs ....................................................................................................... 73