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MA-005 - MINITRANS Installation Manual - Rev 3.1
29-Sep-15
Page 13 of 85
7
MOUNTING
Depending on requirements and the installation environment, the product can be
mounted on a separate standalone mounting stand (see Section 7.1) or direct mounted
to the body of a transformer using the GE direct mount cradle (see Section 7.2). 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.
Note: This avoids putting stress on the internal pump and also 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 is capable of supporting 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 so that it interferes with the regular
maintenance of the transformer.
The product must not be mounted where it will 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.