MA-025
–
DGA 900 Operator Guide
–
Rev 2.0
12-Apr-19
Page 13 of 92
*2
Note: Accuracy and repeatability are quoted for the detectors under factory calibration
and test levels. Gas-in-oil measurements may be affected by sampling and/or oil
type.
*3
Note: Whichever is greater.
*4
Note: Available on free-breathing transformers only.
*5
Note: Given in ppm.
*6
Note:
Based on testing carried out using VOLTESSO™ 35 mineral oil over a ¼ in. pipe
run of 10 metres or less from oil supply or return valve to product connection
point, and on transformer oil supply valve volumes of 200 ml or less. For oil
temperatures colder than
−
20 ºC, GE recommends the use of heat trace cabling
on piping. Low oil viscosity reduces oil flow.
*7
Note: The weight depends on the order specification. The stated weight is for a base
product without packaging and excludes options such as a mounting stand.
Check the shipping document for the exact packaged weight.
*8
Note: Maximum DC breaking capacity for a resistive load.
*9
Note: Use only the approved and recommended fuse to ensure continued fire
protection and compliance.
*10
Note: Laboratory results can vary greatly worldwide as has been established through
many round-robin tests. Any comparison of DGA 900 measurement results
against laboratory results need to be considered in this context.
*11
Note: It is possible for a small amount of condensation to form on the inner surface of
the Analysis enclosure. This occurs under certain environmental conditions and
does not affect the performance or reliability of the product.
