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When the oil temperature is the pressure shall be adjusted to
5. 40 ℃ 1.5 ~ 2. 0 psig (PRESS)
6. 45 ℃ 2.0 ~ 2. 5 psig (PRESS)
7. 50 ℃ 2.5 ~ 3.0 psig (PRESS)
During operation, if it is found that the pressure gauge always shows "0", it must check
whether there is air leakage in the tank or the pressure gauge damaged. And timely repair it.
8.11 Overpressure Relief Valve
This pressure relief is used to relief transformer internal pressure when it exceeds design
limits, this pressure can be pulled to release the pressures which is above the limit. This
valve does not operate under conditions of sudden over-pressure, as those generated in
short circuit presence.
figure 8-19 Pressure Relief valve
8.12 Oil Filling Valve
The Oil filling valve is used to refuel the transformer, as shown in the following figure.
8 Components and Accessories User Manual
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