�·
•
•
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"\\estinghouse
Type 50-DH-50 Air Circuit Breaker
600-1200 Amperes,
5000 Volts
PURPOSE
The purpose of this instruction book i�
!O
ac
quaint the recipient with the characten�t1cs of
the· 50-DH-50 Air Circuit Breaker. Thts book
voids the Advance Instruction Book I. B.
33-670-2
printed
6-43.
Instructions necessar� for the co�
plete installation operation and mamtenance wtll
be found· betwee
�
the covers of this book. The
type DH Air Circuit Breaker is rather new, how-
ever, its operation is, to a considerable degree, simi
lar to that of an oil circuit breaker. It is built by a
company that has been active in the manufacture
of the higher voltage power air circuit breakers for
the past fifteen years.
Fundamentally a power circuit breaker is a de
vice for interrupting a circuit between separable
contacts under normal or abnormal conditions.
Ordinarily circuit breakers are required to operate
only infrequently although some classes of break
ers are suitable for frequent operations. The type
"DH De-ion" Air Circuit Breaker is designed to
operate in a normal atmosphere and is not depend
ent on the maintenance of any stored medium,
such as air or liquid dielectric. Its performance is
dependable, clean-cut and free from uncertainty.
Fig.
2-Type 50-DH-50, 600 Ampere, 5000 Volt, 3-Po!e-, "De
Fig.
1-
Type 50-DH-50, 600 Ampere, 5000 Volt, 3-Pole, "De-
ion" Air Circuit Breaker.
Inter-phase Barrier and
Arc
ion" Air Circuit Breaker.
Chamber Removed
3
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