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SPECIFICATIONS
PB-333
with accessories:
CCD
No. 70 008 339 702
Input
Voltage
117
Vac ±10%,
47
to
62
Hz
Output Voltage
+6V,
IDA (max)
-6V,
lA
(max)
Regulation
±2,
5%
over
line,
load
and temperature
PB-720
with accessories:
CCD
No. 70 026 046 701
Input
Voltage
117
Vac ±10%,
47
to
62
Hz
Output Voltage
+6V,
5A
(max)
+24V,
1.
75A
(max)
-24V,
1.
75A
(max)
Regulation
±5%
on +6V,
±2%
on
±24V
The
accessories
supplied with
the
power
supply
include:
a line
cord with spade
lugs
for
terminating on
the
barrier
strip
in
the
drawer;
an insulator
for isolating the
power
supply
from
the
chassis and miscellaneous
mounting hardware.
Quick Disconnect connectors
(Thomas
&
Betts, Elizabeth,
N.J. No.
RA257,
CCD
70 937
200
001)
on
the
power
supply and
OMNI-BLOCs
distribute
low
voltage
power.
Sheet
metal bussing
included with
the
OMNI-BLOCs
further distributes
the
power
to
individual
PACs.
The mounting
rails
in
the
drawer,
the
frame
on
the
OMNI-BLOCs,
and
the
sheet
metal bussing
to
the
individual
PACs
distributes logic
ground
to the
system.
Jumpers
with
the
quick disconnect connector also provide
a
redundant ground
path.
The
logic
ground
is
isolated
from
the
outside sheet
metal
of the
drawer.
The drawer
is
connected
to
safety
common
in
the
power
cord.
Some
power
supplies,
however, have
safety
common
connected
to
their
frame,
requiring
the
power
supplies
to
be
isolated
from
the rails
on
which
they
mount.
Insulators
and
insulated
screws
are
used
in
this
case be-
tween
the
power
supply and
mounting
rails.
The
line
cord,
which
plugs
into
a
standard three prong
outlet,
distributes ac
power
to
the
mainframe
drawer.
If
the
mainframe drawer
has
a
panel, the on-off
switch controls
power
to
the
power
supply, fans,
and
the outlet
on
the
drawer.
The
on-off
switch
is
a 15
amp
circuit
breaker.
When
the
drawer
is
not
equipped with
a panel, the
system
supplying
power
should provide
the on-off function
and overload
protection.
In
either case, the
expansion
drawer, equipped with
a
line
cord,
can plug
into
the outlet
on
the
mainframe
drawer.
6-3
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