GE AB-16 User manual

INSTALLATION
198
4555
K
10
-
001
G
Supersedes
4555
KI
0
-
001
F
TYPES
AB
-
16
,
-
40
,
-
41
,
DB
-
16
,
-
30
,
-
40
,
-
41
AMMETERS
AND
VOLTMETERS
(
TAUT
-
BAND
SUSPENSION
)
(
THIS
PUBLICATION
FORMERLY
IDENTIFIED
AS
GEH
-
1564
)
WEB
*
iomi
The
Types
AB
-
16
,
-
40
,
-
41
and
Types
DB
-
16
,
-
30
,
-
40
,
and
-
41
are
switchboard
instruments
whose
moving
systems
are
supported
by
thin
metallic
bands
which
prac
-
tically
eliminate
friction
and
make
the
instrument
resistant
to
shock
.
PANEL
MOUNTING
All
drilling
and
wiring
should
be
completed
before
mounting
the
instruments
.
The
instruments
must
be
mounted
in
a
level
position
.
If
the
panels
are
over
3
/
8
"
thick
,
use
adapter
mounting
studs
as
shown
in
Fig
.
8
.
It
is
advisable
to
keep
wires
carrying
heavy
current
as
far
as
possible
from
all
indicating
instruments
.
When
the
Instrument
is
mounted
in
a
level
position
,
any
deviation
from
zero
should
be
corrected
by
means
of
the
zero
adjustment
.
Connect
the
Instrument
as
shown
in
the
appropriate
diagram
.
DO
NOT
REMOVE
COVER
WHILE
THE
INSTRUMENT
IS
ENERGIZED
.
SCALE
PLATE
,
POINTER
,
AND
ELEMENT
ASSEMBLY
MAY
BE
AT
HAZARDOUS
VOLT
-
AGE
LEVELS
.
WARNING
GROUNDING
CASES
OF
A
-
C
INSTRUMENTS
If
transformers
are
used
on
circuits
of
over
150
volts
,
connect
the
grounded
side
of
the
secondary
circuits
to
the
instrument
case
.
Use
No
.
12
Awg
copper
wire
.
Ground
connections
in
accordance
with
the
National
Electric
Code
.
A
-
C
AMMETERS
(
TYPE
AB
)
When
the
circuit
exceeds
30
amperes
or
650
volts
,
a
current
transformer
of
the
ratio
indicated
on
the
nameplate
must
be
used
,
and
instrument
scale
will
be
marked
in
primary
amperes
.
D
-
C
AMMETERS
(
TYPE
DB
)
D
-
c
ammeters
for
current
measurement
above
60
amperes
must
be
shunted
external
-
ly
.
Shunt
leads
can
be
provided
.
When
leads
are
supplied
by
the
purchaser
,
their
resistance
should
agree
with
the
value
stamped
on
the
instrument
nameplate
,
other
-
wise
an
error
in
the
reading
will
result
.
^
V
ALL
SHUNTS
SHOULD
BE
CONNECTED
IN
THE
GROUNDED
SIDE
OF
THE
LINE
WHEN
POSSIBLE
.
WHEN
THIS
IS
NOT
POSSIBLE
,
OR
THE
CIRCUIT
CAN
NOT
BE
GROUNDED
,
AVOID
REMOVING
THE
COVER
SINCE
THE
INSTRUMENT
WINDINGS
,
AS
WELL
AS
THE
SCALE
AND
POINTER
,
ARE
AT
LINE
POTEN
-
TIAL
.
USE
CAUTION
TO
AVOID
CONTACTING
THIS
POTENTIAL
.
WARNING
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment
nor
to
provide
for
every
Should
further
in
-
possible
contingency
to
be
met
in
connection
with
installation
,
operation
or
maintenance
,
formation
be
desired
or
should
particular
problems
arise
which
are
not
covered
sufficiently
for
the
purchaser
'
s
purposes
,
the
matter
should
be
referred
to
the
General
Electric
Company
.
ELECTRIC
GENERAL
Courtesy of NationalSwitchgear.com

Page
2
4555
K
10
-
001
TYPES
AB
&
DB
AMMETERS
AND
VOLTMETERS
RHEOSTAT ADJUSTMENT
As
the
resistance
of
the
shunt
leads
used
in
certain
applications
can
not
be
predetermined
at
the
factory
,
it
has
been
found
desirable
to
furnish
some
d
~
c
am
-
meters
with
an
internal
rheostat
to
adjust
for
non
-
standard lead
resistances
0
The
nameplate
on
the instrument
has
an
INSTRUMENT
-
f
LEAD
RESIS
0
value
stamped
on
it
*
Connect
a
resistance
bridge
across
the shunt
end
of the
leads
(
shunt
dis
-
connected
)
and
the
instrument
across
the
opposite
end
.
Set
the
resistance
bridge
for
the
INSTRUMENT
+
LEAD
RESIS
.
value
stamped
on
the
nameplate
.
Remove
protective
cap
located
on
base
of
instrument
,
and
adjust
rheostat
until
a
zero
deflection
is
indicated
by
the
bridge galvanometer
.
Replace
protective
cap
after
completing
ad
-
justment
*
If
a
resistance
bridge
is
not
available
,
connect
a
standard
millivoltmeter
across
the shunt end
of the
leads
(
shunt
disconnected
)
and
the
instrument
across
the
opposite
end
.
Apply
a
low
,
adjustable
d
-
c
voltage
across
the
shunt end
of
the
leads
and
adjust
this
voltage
until
the
indication
on
the
standard
millivoltmeter
agrees
with
the
fullscale
millivolts
(
marked
FULL
SCALE
MV
)
on
the
instrument
name
-
plate
.
Remove
protective
cap
located
on
base
of
instrument
and
adjust
rheostat
until the
instrument
reads
full
scale
.
Replace
protective
cap
after
completing
ad
-
justment
.
A
-
C VOLTMETERS
(
TYPE AB
)
When the
circuit exceeds
750
volts
a
potential
transformer
of
the
ratio
in
-
dicated
on
the
instrument
nameplate
must
be used
,
and
the
instrument
scale
will
be
marked
in
primary
volts
.
D
-
C
VOLTMETERS
(
TYPE
DB
)
D
-
c
voltmeters
designed
for
use on
circuits
above
750
volts
,
and
d
-
c
ground
detectors
for
voltages
up
to
and
including
750
volts
,
are
furnished with
external
resistors
and
are
connected
directly
to
the
circuit
to
be
measured
.
EXTERNAL
RESISTORS
"
Res
.
Ext
.
No
,
"
designation
on
the
nameplate
indicates
a
Form
-
3
resistor is
required
,
where
"
No
.
"
is
the
resistor
part
number
.
Dimensions
of
the
external
re
-
sistors
are
given
in
Fig
.
20
and
21
,
and circuit connections
are
given
in
Fig
.
14
,
15
,
16
,
17
and
19
.
UNCALIBRATED
SCALES
Check
for
accuracy
of
full
scale
,
stickiness
,
etc
.
Failure
to
do
so
will
place
warranty
in
jeopardy
.
Do
not
touch
the
pointer
or
any
other
moving
parts
while
re
-
moving
cover
and scale
because
of the
possibility
of
unbalancing
the
element
.
TERMINAL
SCREWS
10
-
33
THREAD
4
MOUNTING
STUDS
1
/
4
-
38
THREAD
—
i
PANEL
—
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DOUBLE
*
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AMMETERS
ONLY
*
*
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64
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A
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-
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8
FOR
AMMETERS
"
A
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*
4
*
9716
"
FOR
VOLTMETERS
USE
ON VOLTMETERS
ONLY
Dimensions
,
Type
AB
-
41
Ammeters
and
Voltmeters
,
Fig
.
1
.
Courtesy of NationalSwitchgear.com

Page
3
4555
K
10
-
001
TYPES
AB
6
c
DB
AMMETERS
AND
VOLTMETERS
USE
ON
VOLTMETERS
ONLY
10
-
32
THREAD
-
28
THREAD
^
TERMINAL
SCREWS
4
MOUNTING
9
TU
08
1
“
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PANEL
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(
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FOR
VOLTMETERS
*
4
-
USE
ON
DOUBLE
RATED
AMMETERS
ONLY
A
Fig
.
2
.
Dimensions
,
Type
AB
-
40
Ammeters
and
Voltmeters
.
4
MOUNTING
STUDS
{
*
"
-
28
THREAD
~
PANEL
'
TERMINAL
STUDS
£
'
*
20
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TOP
,
T
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.
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IEW
OR
SACK
SHOWING
TERMINAL
LOCATIONS
.
38
a
.
$
8
3.87
—
THIS
TERMINAL
FOR
USE
WITH
DOUBLE
RATED
INSTRUMENTS
ONLY
Dimensions
,
Types
DB
-
30
and
-
40
Ammeters
and
Voltmeters
.
Fig
.
3
«
TERMINAL
STUDS
1
/
4
-
2 8
THREAD
—
j
4
MOUNTING
STUDS
1
/
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THREAD
*
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TERMINAL
FOR
USE
WITH
DOUBLE
RATED
INSTRUMENTS
ONLY
32
16
4
-
s
-
32
Fig
.
4
.
Dimensions
,
Type
DB
-
4
‘
1
Ammeters
and
Voltmeters
.
Courtesy of NationalSwitchgear.com

Page
4
4555
K
10
-
001
TYPES
AB
&
DB
AMMETERS
AND
VOLTMETERS
r
-
4
MOUNTING
STUDS
1
/
4
”
-
28
THREAD
TOP
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/
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OF
BACK
SHOWING
TERMINAL
LOCATION
3
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-
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?
OVERALL
WIDTH
LTHIS
TERMINAL
FOR
USE
WITH
DOUBLE
RATED
INSTRUMENTS
ONLY
Dimensions
of
Type
DB
-
16
Ammeters
and
Voltmeters
.
-
*
.
?
5
Fig
.
5
,
TERMINAL
SCREWS
10
-
32
THREAD
—
T
4
MOUNTING
STUDS
1
/
4
"
-
28
THREAD
-
USE
ON
VOLTMETERS
ii
THESE TERMINALS
FOR
USE
WITH
DOUBLE
RATED
AMMETERS
ONLY
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6
L
*
<
0
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i
o
(
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A
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Dimensions
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Type
AB
-
16
Ammeters
and
Voltmeters
.
Fig
.
6
9
L
3.37511
—
*
•
"
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/
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”
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SPECIFY
PANEL
THICKNESS
WHEN
ORDERING
.
.
.
i
—
5
/
I
6
"
DIA
.
(
4
HOLES
)
Fig
.
7
.
dri
1
ling
dimensions
.
Cut
-
out
and
panel
-
Fig
.
8
*
Adapter
mounting
stud
.
Courtesy of NationalSwitchgear.com

Page
5
4555
K
10
-
001
TYPES
AB
&
DB
AMMETERS
AND
VOLTMETERS
;
nU
SINCE
DANGEROUS VOLTAGE
WILL
DEVELOP
IN
THE
OPEN
-
CIRCUIT
SECON
-
DARY
WINDINGS
OF
ENERGIZED
CURRENT
TRANSFORMERS
,
DE
-
ENERGIZE
THE
TRANSFORMERS
BY
SHORT
-
CIRCUITING
THE
SECONDARY
WINDINGS
BE
-
FORE
DISCONNECTING
OR
CONNECTING
INSTRUMENT
TO
TRANSFORMERS
.
WARNING
-
41
plastic
To
clean
Type
AB
-
16
,
-
41
,
and
Type
DB
—
16
,
-
30
windows
,
wash
with
'
soap
and
water
,
not
chemical
cleaners
.
Maintenance
:
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Fig
,
9
,
External
con
-
nections
of
a
-
c
ammeters
*
Fig
*
10
*
External
con
-
nections
of
double
-
rated
a
-
c
altimeters
, ,
Fig
•
11
*
External
connections
of
double
-
*
rated
a
-
c
ammeters
with
current
transformer
*
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LOW
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Fig
.
13
.
External
connections
of
double
-
rated
d
-
c
ammeter
(
DB
-
40
,
-
41
only
)
*
Fig
,
12
.
External
connections
of
d
~
c
ammeters
*
SOURCE
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Fig
*
14
.
External
connec
-
tions
,
a
-
c
voltmeters
.
Fig
,
15
.
External
connec
-
tions
,
a
-
c
voltmeters
with
notential
transformer
-
Fig
.
16
,
External
con
-
nections
,
double
-
rated
A
~
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Courtesy of NationalSwitchgear.com

Page
6
4555
K
10
-
001
TYPES
AB
6
c
DB
AMMETERS
AND
VOLTMETERS
SOURCE
SOURCE
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Fig
.
19
External
connections
of
d
-
c
ground
detectors
,
Fig
.
18
External
con
-
nections
of
double
-
rated
d
-
c
voltmeters
.
Fig
.
17
External
connections
of
d
-
c
voltmeters
.
5
"
h
—
9
6
10
“
32
THO
2
8
I
TUBE
V
e
-
“
8
i
"
9
~
r
6
Fig
,
20
.
Form
-
3
resistor
,
single
tube
.
750
VAC
,
15
/
30
VAC
,
300
/
600
VAC
29
“
“
,
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8
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W
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-
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.
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.
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.
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—
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4
-
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.
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2
TUBES
C
£
3
"
•
8
^
~
8
Formas
resistor
,
two
tubes
,
150
/
600
VAC
Fig
.
21
*
INSTRUMENT
PRODUCTS
OPERATION
,
GENERAL
ELECTRIC
COMPANY
,
LYNN
,
MASS
.
Printed
in
U
.
S
.
A
11
-
79
o
Courtesy of NationalSwitchgear.com