INSTRUCTIONS
Ventilated Dry Type Transformers
SAFETY INFORMATION
IMPORTANT - READ CAREFULLY
WARNING
- READ ALL INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO HANDLE, INSTALL, USE OR SERVICE THIS
EQUIPMENT. FAILURE TO FOLLOW INSTRUCTIONS COULD
RESULT IN SEVERE INJURY, DEATH, OR PROPERTY
DAMAGE.
CAUTION
- THE EQUIPMENT COVERED BY THESE
INSTRUCTIONS SHOULD BE INSTALLED, OPERATED, AND
SERVICED ONLY BY COMPETENT TECHNICIANS FAMILIAR
WITH GOOD SAFETY PRACTICES. THESE INSTRUCTIONS
ARE WRITTEN FOR SUCH PERSONNEL AND ARE
NOT INTENDED AS A SUBSTITUTE FOR ADEQUATE
TRAINING AND EXPERIENCE IN SAFE PROCEDURES FOR
THIS TYPE OF EQUIPMENT.
THESE INSTRUCTIONS DO NOT PURPORT TO COVER
ALL DETAILS OR VARIATIONS IN EQUIPMENT NOR TO
PROVIDE FOR EVERY POSSIBLE CONTINGENCY TO BE
MET IN CONNECTION WITH INSTALLATION, OPERATION
OR MAINTENANCE. SHOULD FURTHER INFORMATION
BE DESIRED OR SHOULD PARTICULAR PROBLEMS
ARISE WHICH ARE NOT COVERED SUFFICIENTLY
FOR THE PURCHASER’S PURPOSES, THE MATTER
SHOULD BE REFERRED TO THE NEAREST SALES OFFICE
ALL APPLICABLE SAFETY PRACTICES INCLUDING, BUT NOT
LIMITED TO, OSHA, NFPA, ANSI, REGIONAL AND LOCAL
SAFETY CODES, SAFE WORKING PRACTICES AND GOOD
JUDGMENT, AS THEY MAY BE APPLIED TO THIS TYPE
OF EQUIPMENT MUST BE USED AND OBSERVED BY
ALL PERSONNEL WHEN INSTALLING, OPERATING AND
MAINTAINING THIS EQUIPMENT.
DANGER - HAZARD OF ELECTRICAL SHOCK OR BURN
. DE-
ENERGIZE, LOCK OUT AND PROPERLY GROUND ALL
CIRCUITS SUPPLYING POWER TO THE TRANSFORMER AND
IT’S ACCESSORIES BEFORE REMOVING ANY CASE PANELS
OR COVERS AND WORKING INSIDE. FAILURE TO DE-
ENERGIZE THE TRANSFORMER AND IT’S ACCESSORIES
BEFORE REMOVING THE CASE PANELS OR COVERS COULD
RESULT IN SEVERE INJURY, DEATH, OR PROPERTY
DAMAGE.
DO NOT MAKE ANY CONNECTIONS THAT ARE
NOT AUTHORIZED BY THE NAMEPLATE OR
CONNECTION DIAGRAMS.
TRANSFORMER MUST BE PROPERLY GROUNDED BEFORE
ENERGIZING.
INTRODUCTION
This instruction manual details information about installing, operating, and maintaining ventilated dry type transformers. Each transformer has
its own specification and unique construction features. These features are detailed in the transformer outline and nameplate drawings.
This instruction bulletin is not an application guide for the ventilated dry type transformers or a substitute for adequate training in safe working
procedures for this and related electrical equipment. Installation of this electrical equipment may require special licenses or training. Consult
applicable national, industry, and local codes for specific requirements. The successful operation
of
any transformer depends on various
factors such as installation, loading, service conditions, and maintenance. Electrical systems in which transformers, along with vacuum or SF6
circuit breakers, are used are capable of high frequency over voltages which will not be suppressed by lightning arresters. These medium
voltage systems may require a detailed, high frequency over voltage system analysis and/or the addition of high frequency over voltage
protection. The transformer should be installed in conditions as specified in ANSI/IEEE Section C57.12.01 Usual Service Conditions, unless the
transformer is designed specifically for operation in conditions other than the usual service conditions.
- 1 -
6/2011
MIT100-15A
NOTE:
If
additional
information
is
needed
that
this
instruction
manual
does
not
cover,
visit
us
on
the
web
or
call
the
Company
Sales
Office.
OF
THE
MADDOX
INDUSTRIAL
TRANSFORMER.
