IEEE Power & Energy Magazine - January/February 2017 - 82

OIL
Introducing Dry-Type
Series Resonant Test
Sets with low PD
levels for testing MV
cables or generators.

figure 7. The Radio City Music Hall control console outside of the orchestra
pit. [Photo courtesy of the Museum of Innovation and Science (miSci) Archives,
Schenectady, New York.]

Rating-30kV 200kVA - Patent Pending

Please contact us for all
your High Voltage AC, DC,
Impulse Test, Measurement
Equipment and Service
Requirements.
EHVTEST.COM/DRY-TYPE

82

ieee power & energy magazine

figure 8. Operating the Radio City Music Hall control console. (Photo from a
1947 Radio City Music Hall brochure.)

renovated to become retail space, and
some of the ornate auditorium decor
remained in place above a false ceiling
in a Woolworth's store until the building was demolished in 1990.
The Westinghouse Electric Manufacturing Company of Pittsburgh, Pennsylvania, entered the electronic light dimmer field in the early 1930s by teaming
up with the Ward Leonard Electric
Company to introduce a rival device that

circumvented GE's patent on the use of
the thyratron tube in conjunction with
a saturable core reactor. This involved
using a small saturable reactor that, in
turn, controlled the main lamp-dimming
reactor. A phanotron (rectifier) tube was
used in conjunction with this small reactor, and the combination was referred
to (for reasons not now apparent) as a
hysterset. A thyratron tube was not necessary in this control scheme.
january/february 2017



http://www.EHVTEST.COM/dry-type

Table of Contents for the Digital Edition of IEEE Power & Energy Magazine - January/February 2017

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IEEE Power & Energy Magazine - January/February 2017 - Cover3
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