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DOD-S-17773B(SH)
14 September 1983
SUPERSEDING
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MIL-S-17773A(SHIPS)
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26 September 1955
(See 6.9)
MILITARY SPECIFICATION
SWITCHES, BUS TRANSFER, ELECTRIC
POWER,
AUTOMATIC AND MANUAL (METRIC)
This specification is approved for use by the Naval Sea
Department of the Navy, and is available for use by all
Agencies of the Department of Defense.
1.
SCOPE
Systems Command,
Departments and
1.1 Scope. This specification covers’alternating current (a.c.) and
direct current (d.c.) electric power bus transfer switches for Naval shipboard
use. Semiconductor(solid-state)devices”used for transfer switch control
circuits are included.
Solid-state transfer switches are not included.
1.2 Classification. Bus transfer switches shall be classified by
standard part numbers as specified in 1.2.1 through 1.2.1.6 (see 6.2.1).
1.2.1 Bus transfer switch part numbers.
The standard part numbers for
the bus transfer switches shall be designated as follows:
ABT
T
4
T
VT
Type
Voltage Frequency
Application
Special
Current
(see (see
(see (see
features
rating
1.201.1)
1.2.1.2)
1:2.1.3)
1.2.1.4)
(see (see
1.2.1.5) 1.2.1.6)
Beneficial comments (recommendations,additions, deletions-)and any pertinent
data which may be of use in improving this document should be addressed to:
Commander, Naval Sea Systems Command, SEA 55Z3, Department of the Navy,
Washington$DC
20362, by using the self-addressedStandardizationDocument
ImprovementProposal (DD Form 1426) appearing at the end of this document or
...
by letter. .
FSC 6110
I
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