General; Handling; Receiving & Inspection; Storage - HPS NH Serie Guía De Instalación, Operación Y Mantenimiento

INSTALLATION, OPERATION AND MAINTENANCE

GENERAL

Dry-type transformers are manufactured to
provide optimum performance for a lifetime of
uninterrupted service. Careful attention to the following
instructions is recommended for safe and reliable
operation.
Installation, operation and maintenance of
transformers should be performed by authorized
persons, familiar with electrical apparatus and the
potential hazards involved.
Warning: Danger! There is the potential of
electric shock whenever working in or
around electrical equipment such as
transformers. Power must be shut off
before any work is conducted on a
transformer.
As with any electrical device, transformers must
be installed according to the requirements of the
national and local electrical codes. Refer to ANSI/IEEE
C57-94 may also be referred to for recommended
installation, application, operation and maintenance of
dry-type transformers.

HANDLING

Transformers are palletized and can either be
lifted via a forklift truck or hoisted by the lifting lugs
provided.
Appropriate lifting equipment should be used
relative to the size of each transformer. For safety
purposes and to protect the transformer, spreader bars
are recommended.
No attempt should be made to lift or move a
transformer from any points on the unit other than
those indicated. Refer to Figures 1 and 2 (pages 9 and
10).
RECEIVING & INSPECTION
Immediately after receiving the transformer, it
should be inspected for any transit damage and for
correctness against the shipping documents.
The unit should be examined for any breaks in its
packaging, dented or damaged enclosures or missing
parts from the packing list.
If any damage is noted, a claim should be filed
immediately with the carrier and a second copy of all
OF DRY-TYPE TRANSFORMERS
- 3 -
pertinent information relative to the order and the
circumstances should be filed with the local sales
office.
If this examination of the unit takes place
outdoors, caution should be exercised such that
inclement weather would not present further hazard.

STORAGE

Transformers that will not be immediately
installed and energized, should be stored in a clean
dry environment away from any environmental
airborne contaminants.
It is recommended that transformers be stored in
a heated building with the protective plastic wrap still
installed.

INSTALLATION

Enclosures are designed and approved
in accordance with specifications
CSA 22.2 No. 47 (General Purpose),
CSA 22.2 No. 94 (Specialty Enclosures),
NEMA 250 and UL 50.
For IEC enclosure equivalents please see
IEC 60529 (Enclosure Classifications
Designations).
a) Indoor/Outdoor Dry-Type Transformers with
Enclosures
Most dry-type transformers are supplied with
either a type 3R, 4 or 12 enclosure. Units may be
installed indoors, or outdoors where applicable. If
equipped with a type 1 enclosures, these units are for
indoor use only.
Ventilated enclosures are recommended for
indoor installation but may also be installed outdoors
where weather conditions allow a type 3R ventilated
enclosure to be installed.
For any outdoor location, the appropriate
applicable codes must be followed including cable
installation and hardware suitable for outdoor service.
Water tight couplings must be used at the
knockouts and any holes in the enclosure must be
drilled below any un-insulated live parts, (below LV
terminals).
Dry-type transformers may be located in an
upright position on walls, floors, posts, beams or other