GE NGV21A Series User manual

INSTRUCTIONS
GEI
-
98326
D
Insert
Booklet
GEI
-
90805
Supersedes
GEI
-
98326
C
VOLTAGE
RELAYS
TYPES
NGV
21
A
NGV
22
A
NGV
23
A
NGV
21
B
NGV
22
B
NGV
23
B
GENERAL
ELECTRIC
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GEI
-
98326
11
13
15
17
19
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18
20
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6
4
8
10
Figure
1
(
0203
A
8587
)
Internal
Connection
Diagram
for
the
NGV
21
A
2
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GEI
-
98326
VOLTAGE
RELAYS
TYPES
NGV
21
A
NGV
22
A
NGV
23
A
NGV
21
B
NGV
22
B
NGV
23
B
INTRODUCTION
This
supplement
,
together
with
instruction
book
GEI
-
90805
which
is
included
in
this
book
,
forms
the
instructions
for
the
various
models
listed
in
Table
A
.
TABLE
A
RELAY
NO
.
OF
UNITS
IN
CASE
NO
.
OF
TARGETS
TYPEOF
INTERNAL
FIGURE
CASE
NGV
21
A
NGV
21
B
NGV
22
A
NGV
22
B
NGV
23
A
NGV
23
B
0
S
2
1
3
3
2
S
2
2
2
0
S
2
3
2
2
S
2
4
1
SI
0
5
1
1
SI
6
DESCRIPTION
The
NGV
21
A
,
NGV
22
A
,
and
NGV
23
A
relays
are
similar
to
NGV
11
,
NGV
12
,
and
NGV
13
However
,
the
NGV
21
B
,
relays
in
principle
,
and
are
calibrated
in
pickup
volts
.
NGV
22
B
,
and
NGV
23
B
have
different
internal
connections
,
as
shown
in
Figures
1
thru
6
of
this
supplement
.
The
calibration
range
of
the
voltage
units
is
given
in
Table
B
.
TABLE
B
*
RATED
VOLTAGE
RANGE
OF
PICKUP
ADJUSTMENT
69
45
69
120
120
80
165
100
165
208
121
173
240
160
240
The
dropout
voltage
is
90
%
or
more
of
pickup
voltage
.
The
outline
and
panel
drilling
for
types
NGV
21
A
,
NGV
21
B
,
NGV
22
A
,
and
NGV
22
B
is
shown
in
Figure
10
of
GEI
-
90805
.
The
outline
and
panel
drilling
for
types
NGV
23
A
and
NGV
23
B
is
shown
in
Figure
11
of
GEI
-
90805
.
Revised
since
last
issue
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment
nor
provide
for
every
possible
contingency
to
be
met
in
connection
with
installation
,
operation
or
maintenance
.
Should
further
information
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
.
To
the
extent
required
the
products
described
herein
meet
applicable
ANSI
,
IEEE
and
NEMA
standards
;
but
no
such
assurance
is
given
with
respect
to
local
codes
and
ordinances
because
they
vary
greatly
.
3
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GEI
-
98326
17
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o
6
2
8
4
10
(
0195
A
9
I
33
)
Internal
Figure
2
Connection
Diagram
for
the
NGV
21
B
4
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GEI
-
98326
13
1
l
15
19
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16
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.
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RIGHT
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ft
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A
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t
-
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R
V
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A
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y
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y
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9
-
3
1
5
0
o
o
o
2
4
6
10
Figure
3
(
0165
A
6092
)
Internal
Connection
Diagram
for
the
NGV
22
A
5
Courtesy of NationalSwitchgear.com

GEI
-
98326
13
15
19
11
o
o
Q
O
16
20
14
12
o
o
o
o
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
L
R
T
LEFT
RIGHT
-
#
-
y
-
M i
L
R
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T
L
R
R
V
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1
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/
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o
o
o
3
1
5
9
9
o
oo
4
6
10
Figure
4
(
0226
A
6941
)
Internal
Connection
Diagram
for
the
NGV
22
B
6
Courtesy of NationalSwitchgear.com

GEI
-
98326
WHEN
USED
V
Cl
^
WHEN
USED
<
>
1
V
z
\
7
^
L
-
N
y
y
*
y
y
y
*
y
-
*
y
y
v
V
“
V
VV
V
~
v
1
3
5
7
9
o
ooo
o
2
4
6
8
10
*
=
SHORT
FINGER
^
Figure
5
(
0195
A
4940
-
4
)
Internal
Connection
Diagram
for
the
NGV
23
A
^
Revised
since
last
issue
7
Courtesy of NationalSwitchgear.com

a
T
)
l
1
#
\
T
V
*
V
*
NK
V
*
V
V
*
v
V
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V
V
V
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V
V
o
o
o
7
9
5
3
1
o
o
o
o
o
10
8
6
2
4
*
-
SHORT
FINGER
Figure
6
(
0203
A
8591
)
Internal
Connection
Diagram
for
the
NGV
23
B
Meter
and
Control
Business
Department
General
Electric
Company
Protection
and
Control
205
Great
Valley
Parkway
Malvern
,
Pennsylvania
19355
-
0715
BC
-
4
/
96
(
250
)
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GEI
-
90805
J
INSTRUCTIONS
UNDERVOLTAGE
RELAYS
TYPES
NGV
11
A
-
Forms
11
and
up
NGV
11
B
-
Forms
11
and
up
NGV
12
A
-
Forms
11
and
up
NGV
12
B
-
Forms
11
and
up
NGV
12
C
-
Forms
11
and
up
NGV
13
A
-
Forms
21
and
up
NGV
13
B
-
Forms
21
and
up
GE
Meter
and
Control
205
Great
Valley
Parkway
Malvern
,
PA
19355
-
0715
Courtesy of NationalSwitchgear.com

GEI
-
90805
CONNECTING
PLUG
MAIN
BRUSH
CONNECTING
BLOCK
4
L
AUXILIARY
BRUSH
TERMINAL
BLOCK
SHORTING
BAR
-
NOTE
:
AFTER
ENGAGING
AUXILIARY
BRUSH
CONNECTING
PLUG
TRAVELS
V
4
INCH
BEFORE
ENGAGING
THE
MAIN
BRUSH
ON
THE TERMINAL
BLOCK
Figure
1
(
8025039
)
Cross Section
of
Drawout
Case
Showing
Position
of
Auxiliary
Brush
—
a
bfc
“
SR
CONTACTS
Snu
I
.
-
ri
FRAME
OPERATING
ARM
ARMATURE
RESIDUAL
SCREW
LOCKNUT
POLE
PIECE
m
p
l
"
'
"
u
Ei
HEELEN
D
OPERATING
ARM
STOP
COiL
Figure
2
(
8012106
)
Typical
Telephone
Type
Unit
Used
in
NGV
Relays
2
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