MR TRAFOGUARD ISM, Operating Instructions Manual

Page: 123 / 224

6 Functions and settings
Maschinenfabrik Reinhausen GmbH 2016 123 5163667/00 EN TRAFOGUARD® ISM®
Displaying transformer statistics
To display the transformer statistics, proceed as follows:
► Go to
Information > Statistics .
Figure 89: Transformer statistics
DGA monitoring
For the DGA monitoring "DGA", you can set 2 limit values each for moisture
content and gas content of the oil. The measured values are recorded via
the AIO assembly. You need to configure [
► 139] this assembly for this pur-
pose. You can display the current measured values by going to "Information"
under "DGA" [
► 136].
Depending on the device configuration, you can monitor up to 11 DGA sig-
nals:
Gas Parameter Unit
H2O H2O> H2O>> %
H2 H2> H2>> ppm
N2 N2> N2>> ppm
CO CO> CO>> ppm
CO2 CO2> CO2>> ppm
CH4 CH4> CH4>> ppm
C2H2 C2H2> C2H2>> ppm
C2H4 C2H4> C2H4>> ppm
C2H6 C2H6> C2H6>> ppm
O2 O2> O2>> ppm
TDCG TDCG> TDCG>> ppm
Table 31: Possible choice of gases
6.7.7