TROUBLESHOOTING & REPAIR
61
AVTM21-415Ja Rev. A June 2005
6.
To check the X1 range:
a.
Connect the 2 M
Ω
resistor and set the controls for a
current of 2.5 mA (about 5000 Volts).
b.
The test set meter should read 2.0 M
Ω
.
For critical applications requiring certification or a more
complete checkout of this test set, a special resistance box is
available. If this checkout box is required, contact the factory
for information about price and delivery.
ADJUSTMENT OF R1 IN STABILIZATION NETWORK
The objective of this adjustment is to dissipate no more than
48 watts in the stabilizing Zener diodes CR1 and CR2 at
maximum line voltage and minimum burden (output current)
on the test set.
Catalog No. 210415
Remove the test set from the case. Locate R1 on the rear of
the panel (see interior view Fig. 15) and remove the rear guard
screen. The power cord must be removed from the service
outlet while adjusting the slider tap of R1.
To make this adjustment requires a sinusoidal source with an
rms voltage of 130 V ±1% and capable of supplying 1.5
amperes. An ac current meter, preferably of the clamp-on type,
is required to measure 1.5 amperes ±2% (if other than a
clamp-on meter is used the meter voltage drop must not
exceed 100 mV).
To adjust R1, proceed as follows:
a.
Arrange the output terminal so that it is isolated.
b.
Set the stabilizer switch to the "OUT" position.
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...
Page 19: ...M 12 AVTM21 415Ja Rev A June 2005 M...
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 53: ...M 46 AVTM21 415Ja Rev A June 2005 M...
Page 57: ...M 50 AVTM21 415Ja Rev A June 2005 M...
Page 73: ...M 66 AVTM21 415Ja Rev A June 2005 Figure 15A Interior View Figure 15B Interior View...
Page 75: ...M 68 AVTM21 415Ja Rev A June 2005 M...
Page 81: ...M 74 AVTM21 415Ja Rev A June 2005 M...
Page 82: ...M 2621 Van Buren Avenue Norristown PA 19403 1 800 723 2861 ext 8578 megger com...
