Final assembly and testing are housed in a separate building with
a 50-ton lifting capability. It is in the final assembly stage that
many of the custom features are added, as configurations and
accessories vary by customer request. With the exception of
short-circuit testing, JST has the capability to perform all other
design and routine tests as dictated by IEEE/ANSI standards, IEC
standards, CSA and other international standards. Test equipment is
modern, accurate and automated. Strict attention is given to
equipment maintenance and maintaining the calibration IAW in line
with our ISO 9001 procedures. All test engineers are fully versed in
the various test standards on a worldwide basis.
The first stage of final assembly begins when the castings are
loaded on the core legs. Upon completion, the upper yoke (top of the
core structure) is assembled, resulting in a completed core and coil
assembly.
Being vertically integrated, JST designs and fabricates a
transformer enclosure that meets NEMA, IEC and other standards. In
our sophisticated metal fabrication and electrostatic paint shop,
JST fabricates and finishes enclosure panels, base frame structures
and other metal components used in the enclosure
assembly.
Testing is facilitated from a control room with a master test
console. An auxiliary control room also exists to increase
throughput at times of peak demand.