M
44
AVTM21-415Ja Rev. A June 2005
Figure 14: Two-winding Transformer in Three-Terminal
Form.
The measurements required are a combination of 2 and 3
terminal forms and measurements of resistance are made in
accordance with Table 2.
TABLE 2: Two and Three Terminal Measurement
Connection Schedule
CONNECTIONS
MEASUREMENT
HIGH
VOLTAGE
GROUND
GUARD
r
12
'
1
2
Not Used
r
12
1
2
3
r
23
3
2
1
r
12´
(r
12
+r
23
)-r
12
r
23
r
13
=
r
12
-r
12´
By using the guard, the resistance between each winding and
ground are measured directly and with the addition of one
extra measurement the resistance between windings is
calculated from the above equation.
Содержание ATEC 210415 Series
Страница 2: ...15 kV Megohmmeter Test Set Catalog No 210415 Series M...
Страница 9: ...M 2 AVTM21 415Ja Rev A June 2005 Figure 1 15 kV Megohmmeter Test Set Catalog No 210415...
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Страница 23: ...M 16 AVTM21 415Ja Rev A June 2005 Figure 2 Schematic Diagram of the 15 kV Megohmmeter...
Страница 30: ...SETTING UP 23 AVTM21 415Ja Rev A June 2005 Figure 4 Testing in a Substation...
Страница 32: ...SETTING UP 25 AVTM21 415Ja Rev A June 2005 Figure 6 Testing Transformer Terminals...
Страница 33: ...M 26 AVTM21 415Ja Rev A June 2005 Figure 7 DC Motor Test Setup Figure 8 Generator Test Setup...
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Страница 73: ...M 66 AVTM21 415Ja Rev A June 2005 Figure 15A Interior View Figure 15B Interior View...
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Страница 82: ...M 2621 Van Buren Avenue Norristown PA 19403 1 800 723 2861 ext 8578 megger com...
