TransformerCare Unit
Hydraulic functions
Hydraulic functions
The TCU is connected to the transformer via two hoses.
Warm oil fed from the upper section of the transformer passes through the hose (15)
to the ball valve (5) of the TCU.
The oil is returned to the transformer via the hose (16) and the check valve (19).
The check valve (19) needs to be mounted at the lower connecting point of the
transformer. This ensures that no transformer oil can run out of the transformer.
Valves (19) and (22) only allow the oil to flow in one direction.
The oil flows through the ball valve (5) and the automatic shut-off valve (9). If there
is a malfunction or if the pressure in the dewatering and degasification unit (8) rises
above 600 mbar (absolute), the shut-off valve (9) closes automatically.
The oil passes through to the suction side of the pump (2) via the fluid filter (4). The
oil flow rate of the pump is ~ 7.2 l/min (50Hz), 8.7 l/min (60Hz).
The pressure required for the degasification and dewatering unit is approx. 18 bar
and is preset using a pressure control valve (22).
The volume flow at the inlet of the degasification and dewatering unit (8) is
~ 4.5 l/min.
HYDAC FILTER SYSTEMS GMBH
en
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BeWa TCU 3472805b en 2011-07-05.doc
2011-07-05
Summary of Contents for TCU Series
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