Howard HI-104 Single-Phase Pad Transformer - Manual (Page 5)

Document 2.4.96, Revision 0
March, 2013
5
Single-Phase Pad-Mounted Compartmental-Type Distribution Transformers
This document is intended as a general guide for the
installation, operation and maintenance of Howard
Industries fluid-filled, single-phase, pad-mounted
compartmental-type distribution transformers.
Although every effort has been made to ensure
accuracy and completeness, these instructions
do not address every conceivable application or
circumstance that might be encountered. Features
presented herein may not be present in all
transformer designs. Standard and optional features
are subject to change without notice.
These instructions are applicable to single-phase,
pad-mounted compartmental-type distribution
transformers (including IEEE Type 1, IEEE Type 2 and
other styles covered by IEEE Standards C57.12.25
and C57.12.38, and the Space-Saver™ style), which
are designed as a single-door style with a one-piece
flip-top hood, or the double-door style (sometimes
called a “wardrobe-style” transformer), which is
designed with two hinged access doors.
All transformer styles are designed for mounting
outdoors on a concrete pad or other suitable
surface. High-voltage and low-voltage cables enter
the transformer terminal compartment from below
ground through an opening in the mounting pad.
The instructions contained herein are applicable
to transformers operated in usual conditions as
specified in the “Usual Service Conditions” section
of IEEE Standard C57.12.00. Questions regarding
installation, operation, and maintenance (particularly
when encountering unusual or special circumstances
not sufficiently covered by these instructions) should
be directed to the Howard Industries Transformer
Division.
IT IS IMPORTANT TO READ AND COMPLY WITH ALL
SAFETY INFORMATION AND WARNINGS DISPLAYED
THROUGHOUT THESE INSTRUCTIONS BEFORE
ATTEMPTING ANY INSTALLATION, OPERATION, OR
MAINTENANCE ACTIVITIES.
SECTION 1: INTRODUCTION