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BX5
OBSOLESCENT.
BX5/l3
Box, Relay, Seconds Intergrating used on
DD 1956/60. DD Spec 3.293. OBSOLESCENT.
BA4/4.
BX5/l4
Box, Relay, Minutes Integrating used on
DD 1956/60. DD Spec 3.293. OBSOLESCENT.
BA5/4.
BX5/l5
Box, Relay, Hours Integrating used on BA4/4. DD 1956/60.
DD Spec 3.293. OBSOLESCENT.
BX5/l6
Box, Relay, Days Integrating used on BA4/4. DD 1956/60.
DD Spec 3.293. OBSOLESCENT.
BX5/17
Box, Relay, G.T.S. Contains four digit switches with lamp
indicators giving time indication. DD 1956/60.
DD Spec 3.293. OBSOLESCENT.
BX5/18
Box, Relay, GTS Auxiliary. Accommodates relays which in
conjunction with BX5/17 form a G.T.S. Unit. DD 1956/60.
DD Spec 3.293. OBSOLESCENT.
BX5/19
Box, Relay, Sync and Fuse Alarm used to give alarm when
time integrators on G.T.S. Units fail to function
correctly. DD 1956/60. OBSOLESCENT.
BX5/24
Te1ecine Projector Interlocking Relay Box used where a 3
phase supply is not available. Electrically interlocks a
single channel Pye telecine projector drive to its
associated SEPMAG recorder when they are fitted with a
single phase se1syn or GEC twintorq machine. Box 380mm x
l33mm x 95mm. SCPD 1967. OBSOLESCENT.
BX5/25
Used at Newcastle in association with PA6/55 at Manchester
to indicate condition of a switch at Manchester on the
Manchester-Carlisle switching system. 5lmm x 89mm x
l14mm. DD 1967. WITHDRAWN.
BX5/26
Safety Relay Box used in OB vehicles to trip the mains in
the event of a reversed polarity, excess voltage (240
maximum), earth fault condition or lack of adequate earth.
DD 1968. WITHDRAWN.
==========================================================================
BX5 Sub Group not available for new designs DD 1977.
BX6 SWITCH BOXES
BX6/1
Used at Douglas, Isle of Man, for remote switching of UHF
link receivers in conjunction with BX5/5 and PA17/23
installed at Snaefell. DD 1957/60. OBSOLESCENT.
BX6/2
Similar to
facilities.
BX6/l but
Installed
has
at
two additional switching
Douglas. DD 1957/60.

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