MA-041
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DGA 900 Plus - Installation & Commissioning Manual - Rev 1.1
4-Mar-22
Page 50 of 99
Figure 9-17: HFCT
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example
As with the Bushing Adaptor cables, the Neutral CT cable should be routed through the
conduit to the product cabinet. If the cable routing is carried out as part of a pre-
installation activity, mark the cable end to identify it as the appropriate Neutral
connection.
9.6
Magnetically Mounted Temperature Sensors
The Magnetically-Mounted Temperature Sensor (MMTS) as shown in Figure 9-18 to
Figure 9-20 should be attached at the top of the transformer to allow the top oil
temperature to be monitored.
Figure 9-18: MMTS rear view
Figure 9-19: MMTS front view
Figure 9-20: MMTS side view - #1
To install the MMTS on a transformer:
▪
Apply a liberal amount of thermal compound (Wakefield Engineering Thermal Joint
Compound 120 series, GE P/N: CONS01026) on the metal probe located in the centre
as shown in Figure 9-18. Note: A lack of thermal compound degrades sensor
performance.
If working at heights is required during the product installation, it is the
responsibility of the installer to ensure that:
▪
planned work complies with national and site regulatory requirements.
▪
third-party equipment is suitable and safe before commencing work.
▪
third parties have received appropriate training for working at height.
This includes, but is not limited to, ‘Working at height’ and ‘Using Mobile
Elevated Working Platforms’.
The Thermal Compound and Silicone Safety Data Sheet guidelines must be
followed.
Metal
Prob
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