GE Hydran 201i Instruction Manual page 88

6.2.2.2 Vertical Installations of the H201Ti
Regardless of the selected location, it is recommended to mount the Hydran H201Ti
horizontally (as shown Figure 6-8).
installation may be acceptable; contact the General Electric Customer Service (the
coordinates can be found at the bottom of page 2).
If the Hydran H201Ti is installed vertically, note the following points:
• The sensor's threaded extremity must be oriented upward.
• The oil temperature at this location must always be below 30 °C (86 °F).
• Do not use a 90° elbow to convert a vertical installation to a horizontal
installation.
• It is recommended to set the temperature set point (parameter Temp
SetPoint in the Temperature submenu) of the H201 sensor to 45 °C
(113 °F).
6.2.2.3 Typical Locations
Figure 6-9 illustrates some 'typical' valve locations to install the Hydran 201Ti. These
locations vary between transformers, but there are some valve locations on a
transformer where the oil circulation is much better due to the nature of a transformer's
operation.
The circulation of oil is generally the same in all transformers — the natural
convection of the oil circulates from warm to cool as the transformer warms up. The oil
at the bottom is usually cooler than the top as it returns from the cooling system, as
illustrated in Figure 6-9.
Page 88
Hydran* 201i Instruction Manual
If no horizontal valve is available, a vertical
MA-033 Rev. 14.0, 12-Nov-18