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7
MOUNTING
Depending on requirements and the installation environment, the product can be
mounted on a separate standalone mounting stand (see Section 7.2) or direct mounted
to the body of a transformer using the GE direct mount cradle (see Section 7.3). When
considering where and how to mount the product, observe the following points to
ensure an appropriate mounting configuration:
The location for the product shall allow easy access to the transformer oil
supply and return valves, so that tubing runs can be kept to a minimum,
particularly in case of extreme temperature. The supply and return tubing
runs between each transformer valve and the product connection point
should NOT exceed 20 m (65 ft) in length, or 40 m (130 ft) in total length for
the complete oil circuit.
and reduces the possibility of oil cavitation.
If the recommended GE mounting arrangement is not purchased, a
structurally sound weather-resistant mounting that supports the 30.5 kg (68
lb) weight of the product must be available (see Appendix F for dimensions).
The mounting stand must also be designed to be securely fastened to a flat
mounting surface. Additional reinforcement and/or dampening may be
necessary if local conditions (environmental or otherwise) could expose the
product to potential external forces or vibration.
The product must be mounted on a flat surface within 5 degrees of plumb and
level on both axes, which can support the combined weight of the product
and its 20 kg (45 lb) mounting stand. (See Appendix G for mounting stand
footprint dimensions.)
If a new concrete pad is required, GE recommends that it be at least 61 cm
(24 in.) wide by 122 cm (48 in.) long and 9 cm (3 ½ in.) thick with a #3 (10 mm)
steel reinforcing bar around the perimeter. (Earth bonded as per local or site
practice and code.)
The product must not be mounted where it could interfere with the regular
maintenance of the transformer.
The product must not be mounted where it could interfere with the airflow of
the transformer's cooling system.
The airflow to the vent areas on the bottom and sides of the product must not
be blocked or restricted in any way.
At least 75 cm (2.5 ft) must be kept clear directly in front of the product. The
front door of the product opens for access during installation, maintenance
and operation.
At least 100 cm (3.3 ft) must be kept clear on the left-hand side of the product
to allow service access to the oil pump. See Appendix E.
MA-005 - Minitrans Installation Manual - Rev 4.5
Note: This avoids putting stress on the internal pump
13-Aug-20
Page 15 of 86
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