GE Kelman Minitrans Installation Manual page 78

Transformer oil dissolved gas and moisture monitor
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M.3.2
Checks and measurements
Isolator Alignment: Inspect all six isolators to ensure proper alignment. If required,
unscrew the nuts and adjust the isolators so that the opposing threaded portions of
each isolator are aligned.
Measure skew distance: Report any skew which is greater than 4 mm (measured from
bolt centre to bolt centre as shown in Figure M-28).
such as a ruler, calipers or similar.
Ensure proper alignment.
Minimise the skew distance and
report if over 4 mm.
Figure M-28: Misalignment and skew distance
Compression check: Measure the distance of compression on all six isolators and
ensure that it is less than 21 mm as shown in Figure M-29. If it is greater than this
value, the isolator will be in tension and will likely fail. Contact the Customer Service
Centre.
Figure M-29: Isolators used in compression and compression distance
MA-005 - Minitrans Installation Manual - Rev 4.5
Use only in compression.
Must be 21 mm or less.
Note: Use a measurement tool,
13-Aug-20
Page 78 of 86

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