manuals.online logo
Brands
  1. Home
  2. •
  3. Brands
  4. •
  5. GE
  6. •
  7. Relay
  8. •
  9. GE IAC57A User manual

GE IAC57A User manual

This manual suits for next models

6

Other GE Relay manuals

GE 369 User manual

GE

GE 369 User manual

GE 12IAC8OL User manual

GE

GE 12IAC8OL User manual

GE L30 User manual

GE

GE L30 User manual

GE ML Series 350 User manual

GE

GE ML Series 350 User manual

GE IAC77B User manual

GE

GE IAC77B User manual

GE Multilin g60 User manual

GE

GE Multilin g60 User manual

GE T60 User manual

GE

GE T60 User manual

GE SBC231A User manual

GE

GE SBC231A User manual

GE NGV Series User manual

GE

GE NGV Series User manual

GE Multilin 745 User manual

GE

GE Multilin 745 User manual

GE 239 User manual

GE

GE 239 User manual

GE IAC Series User manual

GE

GE IAC Series User manual

GE GCX51A User manual

GE

GE GCX51A User manual

GE IFV51AD User manual

GE

GE IFV51AD User manual

GE KVGC 202 User manual

GE

GE KVGC 202 User manual

GE MOTOR MANAGEMENT RELAY 469 User manual

GE

GE MOTOR MANAGEMENT RELAY 469 User manual

GE IAC51A User manual

GE

GE IAC51A User manual

GE NGV21A Series User manual

GE

GE NGV21A Series User manual

GE IAC59A User manual

GE

GE IAC59A User manual

GE SLYG81A User manual

GE

GE SLYG81A User manual

GE MOV 2000 User manual

GE

GE MOV 2000 User manual

GE Multilin 469 User manual

GE

GE Multilin 469 User manual

GE GCY51F Series User manual

GE

GE GCY51F Series User manual

GE IRT51 E User manual

GE

GE IRT51 E User manual

Popular Relay manuals by other brands

Woodward BU1-DC2 manual

Woodward

Woodward BU1-DC2 manual

ABB SSR32 product manual

ABB

ABB SSR32 product manual

Siemens SIRIUS 3UG4633 operating instructions

Siemens

Siemens SIRIUS 3UG4633 operating instructions

Siemens SIRIUS 3TK2824 A.20 Series Original operating instructions

Siemens

Siemens SIRIUS 3TK2824 A.20 Series Original operating instructions

Shelly Pro Series user manual

Shelly

Shelly Pro Series user manual

ABB RELION REF615R manual

ABB

ABB RELION REF615R manual

Kemo Electronic B197 quick guide

Kemo Electronic

Kemo Electronic B197 quick guide

Seg MRM3 manual

Seg

Seg MRM3 manual

Basler BE1-700C manual

Basler

Basler BE1-700C manual

CD Automation REVEX 2PH 280A user manual

CD Automation

CD Automation REVEX 2PH 280A user manual

ABB SPAJ 142 C User manual and technical description

ABB

ABB SPAJ 142 C User manual and technical description

Ruelco 1S04 Operation manual

Ruelco

Ruelco 1S04 Operation manual

Basler V3E Z1P B2C1F instruction manual

Basler

Basler V3E Z1P B2C1F instruction manual

Kyongbo Electronics GDR-D01 user manual

Kyongbo Electronics

Kyongbo Electronics GDR-D01 user manual

Eaton easyE4 series Application note

Eaton

Eaton easyE4 series Application note

Siemens BD2-AK03X/FS Series installation instructions

Siemens

Siemens BD2-AK03X/FS Series installation instructions

Leuze MSI-SR5B Original operating instructions

Leuze

Leuze MSI-SR5B Original operating instructions

Littelfuse SE-330AU manual

Littelfuse

Littelfuse SE-330AU manual

manuals.online logo
manuals.online logoBrands
  • About & Mission
  • Contact us
  • Privacy Policy
  • Terms and Conditions

Copyright 2025 Manuals.Online. All Rights Reserved.

GEI
-
19959
J
INSERT
BOOKLET
GEH
-
1753
INSTRUCTIONS
LONG
-
TIME
OVERCURRENT
RELAYS
TYPES
IAC
57
A
and
IAC
57
B
INTRODUCTION
This
booklet
,
with
Insert
Book
GEH
-
1753
,
forms
the
instructions
for
the
Type
IAC
57
A
and
IAC
57
B
relays
.
The
IAC
57
A
and
IAC
57
B
relays
are
similar
to
the
Type
IAC
51
A
and
IAC
51
B
relays
,
respectively
,
except
that
some
of
the
parts
have
been
altered
to
provide
longer
operating
times
.
Typical
time
-
current
curves
for
these
relays
are
shown
in
Figure
1
of
this
booklet
.
The
one
-
second
and
continuous
current
ratings
for
these
relays
are
listed
in
Table
I
.
TABLE
I
CURRENT
RATINGS
1
-
SECOND
CONTINUOUS
RELAY
RANGE
10.0
-
20.0
5.0
-
8.0
1.5
-
3.5
250
4
-
16
1.5
-
6
0.5
-
2
200
70
The
outline
and
panel
drilling
dimensions
for
these
relays
are
shown
in
Figure
20
of
GEH
-
1753
.
The
internal
connection
diagram
for
IAC
57
A
is
Figure
11
and
for
IAC
57
B
is
Figure
12
in
GEH
-
1753
.
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
.
Courtesy of NationalSwitchgear.com
GEI
-
19959
11
!
irtui
i
HlHffl
«
NM
«
!
m
1
«
I
0
9
8
6
5
o
c
4
3
«
o
o
2
Q
6
h
-
2
i
i
i
mill
I
I
S
I
*
ll
|
m
m
mm
Tinag
MULTIPLES
OF
RELAY
TAP
SETTING
Figure
1
(
0888
B
0272
[
1
]
)
Typical
Time
-
Current
Characteristic
of
Type
IAC
57
Relays
ST
6
/
93
(
300
)
GENERAL
ELECTRIC
METER
AND
CONTROL
BUSINESS
DEPT
.
,
MALVERN
,
PA
19355
Courtesy of NationalSwitchgear.com
GEH
-
1753
J
INSTRUCTIONS
TIME
-
OVERCURRENT
RELAYS
TYPES
IAC
52
A
IAC
52
B
IAC
51
A
IAC
51
B
IAC
51
R
GENERAL
#
ELECTRIC
Courtesy of NationalSwitchgear.com
GEH
-
1753
Time
Overcurrent
Relays
Type
IAC
TOP
PIVOT
TAP
]
BLOCK
TAP
PLUG
SEAL
-
IN
UNIT
HOLDING
COIL
I
V
•
>
•
y
•
©
55
m
%
i
Li
TIME
DIAL
SEAL
-
IN
TARGET
;
m
m
t
&
A
DISK
A
:
i
j
SHAFT
1
SEAL
-
IN
UNIT
STATIONARY
CONTACT
,
LEFT
n
MAIN
!
SI
MOVING
i
§
f
SHAFT
MAIN
STATIONARY
BRUSH
AND
CONTACT
ASSEMBLY
i
!
II
SEAL
-
IN
UNIT
STATIONARY
CONTACT
,
RIGHT
m
/
SEAL
-
i N
MOVING
CONTACT
ASSEMBLY
rR
,
c
11
i
j
i
iL
.
DISK
'
**
*
*
*
*
e
'
STHI
/
CTIOMK
-
s
'
A
;
M
"
(
TAMIL
4
O
’
JS
UNIT
DRAG
MAGNET
m
*
1
'
/
(
8006996
)
Front
View
CRADLE
DISK
AND
SHAFT
COIL
,
MAGNET
,
AND
TAP
1
BLOCK
LASSEMBLY
LOWER
JEWEL
SCREW
B
-
(
8006997
)
Rear
View
Figure
1
.
The
Induction
Unit
for
Type
IAC
Relays
*
2
Courtesy of NationalSwitchgear.com
TIME
-
OVERCURRENT
RELAYS
TYPE
IAC
INTRODUCTION
Contact
Circuits
Instantaneous
Unit
AC
Trip
Outline
&
Panel
Drilling
Induction
Unit
Internal
Connection
Type
Unit
One
One
One
Two
Two
IAC
51
A
(
-
)
A
IAC
51
B
(
-
)
A
IAC
51
R
(
-
)
A
LAC
52
A
(
-
)
A
IAC
52
B
(
-
)
A
No
One
One
One
One
One
Fig
.
11
Fig
.
12
Fig
.
13
Fig
.
14
Fig
.
15
No
Fig
.
18
Fig
.
18
Fig
.
18
Fig
.
18
Fig
.
18
Yes
Yes
No
Yes
No
No
Yes
No
The
Type
IAC
relays
comprise
a
group
of
relays
that
are
employed
to
protect
against
overcurrent
on
single
-
phase
and
polyphase
circuits
.
The
various
relays
in
this
IAC
group
are
identified
by
model
numbers
,
and
the
relays
differ
in
the
number
of
circuits
they
close
,
the
length
of
time
delay
and
features
that
are
determined
by
the
characteristics
of
the
protected
circuit
.
These
relays
consist
of
an
induction
unit
or
an
induction
unit
with
an
instantaneous
unit
which
permits
instantaneous
tripping
for
extremely
high
currents
,
or
an
induction
unit
with
an
a
-
c
tripping
unit
for
use
where
d
-
c
power
is
unavailable
or
a
-
c
tripping
is
preferred
.
Since
practically
all
IAC
relays
are
composed
of
various
combinations
of
the
above
-
that
is
,
the
induction
unit
,
the
instantaneous
unit
and
the
a
-
c
tripping
unit
-
they
are
for
con
-
venience
,
described
separately
in
the
following
text
.
The
above
table
indicates
the
units
comprising
each
type
and
also
lists
the
internal
connections
and
out
-
line
and
panel
drilling
diagrams
.
INDUCTION
UNIT
INTRODUCTION
APPLICATION
The
induction
unit
is
the
main
unit
in
all
IAC
relays
,
supplying
the
inverse
time
delay
character
-
istics
of
the
relay
and
sounding
an
alarm
or
tripping
the
breakers
for
overload
currents
which
cause
it
to
close
its
contacts
.
The
induction
unit
is
the
basic
unit
in
all
IAC
relays
.
Fig
.
1
shows
the
induction
unit
mounted
in
the
cradle
.
These
units
are
of
the
induction
-
disk
construction
type
.
The
disk
is
actuated
by
a
current
operating
coil
on
a
laminated
U
-
magnet
.
The
disk
shaft
carries
the
moving
contact
which
completes
the
alarm
or
trip
circuit
when
it
touches
the
station
-
ary
contact
or
contacts
.
The
disk
shaft
is
restrained
by
a
spiral
spring
to
give
the
proper
contact
-
closing
current
and
its
motion
is
retarded
by
a
permanent
magnet
acting
on
the
disk
to
give
the
correct
time
delay
.
OPERATING
CHARACTERISTICS
The
induction
unit
may
have
one
or
two
circuit
-
closing
contacts
which
close
as
the
current
increases
to
the
pick
-
up
value
as
set
on
the
tap
block
.
The
time
delay
in
closing
the
contacts
is
determined
by
the
setting
of
the
time
dial
(
Fig
.
1
)
.
The
time
-
current
characteristics
are
shown
in
Fig
.
2
.
There
is
a
seal
-
in
unit
mounted
on
the
front
to
the
left
of
the
shaft
.
This
unit
has
its
coil
in
series
and
its
contacts
in
parallel
with
the
main
contacts
such
that
when
the
main
contacts
close
the
seal
-
in
unit
picks
up
and
seals
in
.
seal
-
in
unit
picks
up
,
it
raises
a
target
into
view
which
latches
up
and
remains
exposed
until
released
by
pressing
a
button
beneath
the
lower
left
corner
of
the
cover
.
RATINGS
The
induction
element
is
designed
to
use
any
one
of
three
operating
coils
,
each
having
a
different
combination
of
taps
as
follows
:
4
,
5
,
6
,
8
,
10
,
12
and
16
amperes
;
1.5
,
2.0
,
2.5
,
3.0
,
4.0
,
5.0
and
6.0
amperes
;
0.5
,
0.6
,
0.8
,
1.0
,
1.2
,
1.5
and
2.0
am
-
peres
.
When
the
These
instructions
do
not
purport
to
cover
all
details
or
variations
in
equipment
nor
to
provide
for
every
possible
contingency
to
be
met
in
connection
with
installation
,
operation
or
maintenance
.
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
.
Should
3
Courtesy of NationalSwitchgear.com
GEH
-
1753
Time
Overeurrent
Relays
Type
IAC
20
\
VS
10
9
rv
\
v
8
Xvs
7
\
\
\
x
8
\
C
/
5
9
Q
\
\
\
X
X
\
2
X
\
V
X
X
N
O
4
\
X
CJ
s
fcd
X
\
\
\
V
X
X
3
3
\
X
X
V
1
\
\
X
x
X
x
V
p
2
\
\
N
V
10
\
9
8
\
v
7
i
\
.
a
6
.
a
«
/
>
\
5
v
.
7
a
>
c
X
4
.
8
X
<
D
3
V
.
4
tn
\
2
V
.
3
O
a
.
2
a
>
E
i
I
-
XI
.
08
.
07
.
08
.
09
.
04
.
03
.
02
.
01
.
3
.
8
.
7
.
8
.
9
1
3
4
8
8
7
8
9
10
20
30
40
SO
80
70
80
SOg
MULTIPLES
OF
RELAY
TAP
SETTING
(
0888
B
0269
[
3
]
)
Time
-
current
Curves
of
Type
IAC
Relays
with
Inverse
-
time
Characteristics
Fig
.
2
.
4
Courtesy of NationalSwitchgear.com
Time
Overcurrent
Relays
Type
IAC
GEH
-
1753
The
current
-
closing
rating
of
the
contacts
is
30
amperes
for
voltages
not
exceeding
250
volts
.
The
current
-
carrying
ratings
are
affected
by
the
selection
of
the
tap
on
the
target
and
seal
-
in
coil
as
indicated
in
the
following
table
:
BURDENS
Burdens
for
the
standard
coils
are
given
in
the
following
table
.
These
are
calculated
burdens
at
five
amperes
based
on
burden
of
minimum
tap
.
Volt
-
ampere
burdens
for
the
lowest
tap
on
any
of
the
three
coils
can
be
determined
for
any
value
of
current
,
up
to
20
times
tap
setting
,
from
Fig
.
3
.
DUAL
RATED
0.2
/
2.0
0.6
/
2.0
2.0
0.2
2.0
0.6
3.5
Carry
30
amps
for
(
sec
)
Carry
10
amps
for
(
sec
)
Carry
continuously
(
amp
)
Minimum
operating
(
amp
)
Minimum
dropout
DC
resistance
60
hertz
impedance
50
hertz
impedance
0.05
2.2
0.5
Coil
Amperes
Volt
-
Amps
Imp
.
Ohms
30
0.45
20
5.0
Freq
.
Tap
PF
0.37
2.3
1.2
2.6
0.2
2.0
0.6
2.0
4
-
16
60
4.0
(
amp
)
(
ohms
)
(
ohms
)
(
ohms
)
0.05
0.5
0.15
8.8
0.5
0.35
0.29
8.3
0.24
0.78
0.18
50
4.0
0.32
8.0
0.31
50
0.65
6.2
0.65
25
4.0
7.5
0.30
0.36
42
0.54
5.1
0.54
1.5
-
6.0
60
1.5
59.0
2.36
0.26
50
1.5
If
the
tripping
current
exceeds
30
amperes
,
an
auxiliary
relay
should
be
used
,
the
connections
being
such
that
the
tripping
current
does
not
pass
through
the
contacts
or
the
target
and
seal
-
in
coils
of
the
protective
relay
.
52.0
2.08
0.28
25
1.5
48.0
1.92
0.34
0.5
-
2.0
60
0.5
530.0
470.0
430.0
21.2
0.26
50
0.5
18.8
0.28
25
0.5
17.2
0.34
TAP
>
RANGE
0.5
-
2.0
TAP
RANGE
1.5
-
6.0
AMPS
.
TAP
RANGE
1
4
-
16
AMPS
.
MULTIPLES
OF
MINIMUM
TAP
SETTING
SATURATION
CURVES
AT
VARIOUS
FREQUENCIES
FOR
3
TAP
RANGES
OF
THE
TYPE
1
AC
51
A
RELAY
LOWEST
TAP
USED
IN
ALL
CASES
Fig
.
3
.
(
K
-
6306891
-
1
)
Saturation
Curves
for
Lowest
Taps
of
the
Induction
Unit
of
Type
IAC
Relays
with
Inverse
-
time
Characteristics
.
5
Courtesy of NationalSwitchgear.com
GEH
-
1753
Time
Overcurrent
Relays
Type
IAC
A
-
C
8
US
TRIP
BUS
IrJ
1
2
n
¥
3
X
*
lA
-
r
h
LI
n
DEVICE
FUNCTION
NUMBERS
FOR
USE
WITH
ALL
EXTERNAL
DIAGRAMS
61
5
A
zi
=
i
h
50
Instantaneous
Unit
5
-
>
in
M
-
6
51
Overcurrent
,
Relay
,
Type
IAC
Ground
Overcurrent
Relay
,
Type
IAC
Power
Circuit
Breaker
51
N
52
SI
Seal
-
in
Unit
,
with
Target
Trip
Coil
Auxiliary
contact
,
closed
when
breaker
closes
.
Fig
.
4
(
K
-
6375667
-
2
)
Type
IAC
51
A
Relays
used
for
Phase
-
to
-
Phase
and
Ground
Overcurrent
Portection
of
a
3
-
Phase
Circuit
.
External
Connections
of
Three
TC
A
A
-
C
BUS
1
2
3
A
-
C
BUS
1
ZL
2
3
12
ss
1
.
jn
A
-
C
TRIPPING
-
H
1
»
l
«
BXx
‘
UNIT
j
^
L
112
l
0
C
5
l
~
lj
%
lira
.
t
ilrl
10
,
u
-
H
-
X
-
,
t
~
L
,
6
£
1
=
L
11
=
1
TR
|
PP
|
NG
Rf
ACTOR
"
"
"
-
-
1
Fig
.
6
(
K
-
6373669
-
6
)
External
Connections
of
Three
Type
IAC
51
R
Relays
used
for
3
-
Phase
Circuit
Protection
.
Fig
.
3
(
K
6373668
-
1
)
External
Connections
of
Three
Type
IAC
51
A
Relays
used
in
Conjunction
with
Tripping
for
Protection
of
aTThree
-
Phase
Circuit
.
Reactors
6
Courtesy of NationalSwitchgear.com
Time
Overcurrent
Relays
Type
IAC
GEH
-
1753
INSTANTANEOUS
UNIT
INTRODUCTION
mounted
beside
the
adjustable
pole
piece
.
Time
-
current
characteristics
are
shown
in
Fig
.
10
.
The
instantaneous
unit
is
a
small
instantaneous
hinge
-
type
unit
which
may
be
mounted
on
the
right
front
side
of
the
induction
unit
(
See
Fig
.
7
)
.
Its
contacts
are
normally
connected
in
parallel
with
the
contacts
of
the
main
unit
.
Its
coil
is
connected
in
series
with
the
operating
coil
of
the
main
unit
.
When
the
current
reaches
a
predetermined
value
,
the
instantaneous
unit
operates
,
closing
the
contact
circuit
and
raising
its
target
into
view
.
The
target
latches
in
the
exposed
position
until
released
by
pressing
the
button
beneath
the
lower
left
-
hand
corner
of
the
relay
cover
.
RATINGS
The
instantaneous
unit
is
designed
to
use
either
of
two
coils
having
pickup
ranges
of
10
to
40
,
and
20
to
80
amperes
respectively
.
The
current
-
closing
rating
of
the
contacts
is
30
amperes
for
voltages
not
exceeding
250
volts
.
BURDENS
Burden
data
on
the
instantaneous
unit
coils
are
given
in
the
following
table
:
APPLICATION
Imp
.
Ohms
Volt
Coil
PF
Freq
.
Amp
.
Amp
The
instantaneous
unit
is
used
on
certain
IAC
relay
models
to
provide
instantaneous
tripping
for
current
exceeding
a
predetermined
value
.
10
-
40
60
5
0.83
0.033
0.032
0.027
0.008
0.008
0.007
0.95
50
5
0.80
0.95
25
0.65
5
0.98
OPERATING
CHARACTERISTICS
20
-
80
60
5
0.21
0.95
The
instantaneous
element
operates
over
a
4
to
1
range
and
has
its
calibration
stamped
on
a
scale
50
5
0.20
0.95
25
5
0.15
0.98
CALIBRATION
«
fi
PLATE
ADJUSTABLE
POLE
PIECE
INSTANTANEOUS
UNIT
OPERATING
COIL
SHORTING
COIL
-
CONTACTS
_
TARGET
STATIONARY
CONTACTS
MAIN
COIL
MOVING
CONTACT
ASSEMBLY
A
-
C
TRIPPING
r
<
>
FM
KAl
>
UNIT
Kk
T
‘
*
*
*
»
»
*
Tll
*
E
A
/
»
«
*
MPCN
.
I
.
.
-
!
N
*
T
*
OCT
(
0
>
.
S
r
Fig
.
7
.
(
8006998
)
Type
IAC
Relay
with
an
Instantaneous
Unit
.
Fig
.
8
.
(
8007060
)
Type
IAC
Relay
with
A
-
C
Tripping
Unit
.
an
7
Courtesy of NationalSwitchgear.com
GEH
-
1753
Time
Overcurrent
Relays
Type
IAC
A
-
C
TRIPPING
UNIT
INTRODUCTION
The
a
-
c
tripping
unit
is
a
Type
REA
relay
unit
designed
to
energize
a
circuit
breaker
trip
coil
from
its
associated
current
transformer
upon
the
operation
of
the
main
unit
of
the
IAC
relay
.
It
transfers
the
current
from
the
secondary
of
the
current
trans
-
former
into
the
trip
coil
and
removes
the
current
from
the
trip
coil
when
the
breaker
trips
.
The
tripping
unit
is
mounted
on
the
rear
of
the
frame
opposite
the
tapped
operating
coil
of
the
induction
unit
(
see
Fig
.
8
)
.
The
operation
of
this
unit
is
illustrated
in
Fig
.
9
.
The
secondary
current
circulates
through
the
induction
unit
current
coil
and
the
main
coil
of
the
REA
auxiliary
tripping
unit
,
returning
through
the
REA
contacts
to
the
current
transformer
.
Normally
,
most
of
the
flux
generated
by
the
main
REA
coil
passes
through
the
upper
limb
of
the
magnetic
structure
and
holds
the
armature
firmly
against
this
limb
.
When
the
contacts
of
the
induction
unit
close
,
the
shorting
coil
of
the
REA
is
short
-
circuited
and
current
flows
in
this
coil
by
transformer
action
,
causing
a
redistribution
of
flux
which
actuates
the
armature
and
the
REA
contacts
.
The
opening
of
the
REA
contacts
causes
the
secondary
current
to
flow
through
the
trip
coil
which
trips
the
breaker
.
Ti
$
l
BREAKER
TRIP
COIL
CURRENT
TRANS
AC
TRIP
UNIT
NORMALLY
CLOSED
CONTACTS
IOC
T
I
LQC
AC
TRIP
UNIjT
SHORTING
J
COIL
O
v
AC
TRIP
'
UNIT
MAIN
COIL
TOC
Fig
.
9
(
K
-
6154766
-
2
)
Diagram
Illustrating
Operation
of
Type
IAC
Relays
having
an
A
-
C
Tripping
Unit
.
0.030
OPERATING
TIME
RANGE
FOR
ANY
PICKUP
SETTING
0.025
o
Ul
<
r
>
0.020
i
UJ
t
-
0.015
a
.
<
-
>
0.010
Q
-
0.005
0
7
fa
y
io
3
5
6
0
4
MULTIPLES
OF
PICK
-
UP
(
6306872
[
5
]
)
Time
-
current
Characteristics
o f
Original
Instantaneous
Unit
Fig
.
10
8
Courtesy of NationalSwitchgear.com