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AVTM21-415Ja Rev. A June 2005
5
DESCRIPTION
GENERAL
The portable Megohmmeter Test Set measures the electrical
quantities of applied voltage and resistance of the apparatus to
which it is connected. Designed for field or shop use, the
complete Test Set (including all leads) is housed in a rugged
structural foam, polycarbonate case that includes a sturdy
protective lid and carrying strap. For safety in operation, the
control panel of the Test Set is of grounded metal.
ELECTRICAL
The Test Set consists of a variable dc power supply with
metering of the output voltage and current passing between
the high voltage output terminal and ground.
Figure 2 is the schematic diagram of this Test Set.
The high voltage dc power supply is contained within an
internal guard shield. The output of the step-up transformer
T101 supplies a full-wave voltage-doubling rectifier consisting
of protective resistors R107 and R108, the silicon rectifiers
CR101 and CR102 and the output filter capacitors C101 and
C102. For safety the power supply is discharged by the bleeder
resistors R101 and R102. Resistor R104 limits the output
current if the apparatus being tested breaks down. Resistor
R103 is the kilovoltmeter multiplier and capacitor C103
protects the voltmeter from transients. The negative terminal
Summary of Contents for ATEC 210415 Series
Page 2: ...15 kV Megohmmeter Test Set Catalog No 210415 Series M...
Page 9: ...M 2 AVTM21 415Ja Rev A June 2005 Figure 1 15 kV Megohmmeter Test Set Catalog No 210415...
Page 13: ...M 6 AVTM21 415Ja Rev A June 2005 M...
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Page 23: ...M 16 AVTM21 415Ja Rev A June 2005 Figure 2 Schematic Diagram of the 15 kV Megohmmeter...
Page 30: ...SETTING UP 23 AVTM21 415Ja Rev A June 2005 Figure 4 Testing in a Substation...
Page 32: ...SETTING UP 25 AVTM21 415Ja Rev A June 2005 Figure 6 Testing Transformer Terminals...
Page 33: ...M 26 AVTM21 415Ja Rev A June 2005 Figure 7 DC Motor Test Setup Figure 8 Generator Test Setup...
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Page 73: ...M 66 AVTM21 415Ja Rev A June 2005 Figure 15A Interior View Figure 15B Interior View...
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Page 82: ...M 2621 Van Buren Avenue Norristown PA 19403 1 800 723 2861 ext 8578 megger com...
