GE SFF201A, SFF201B, SFF202A, SFF202B, SFF204A Instructions Manual

...
INSTRUCTIONS
GEK-90636D
Static
Frequency
SFF2O1A, SFF2O2A, SFF2O4A,
Relays B B B
GEK-90636
Description Application
Under Rate
of Over Load
Specifications
DC
Control
AC
Control Measurement
AC Settings Environmental
Ratings
Burden Contact
Settings Displays Functional Construction Receiving, Acceptance
General Visual TestEquipment General Relay Tests Over
Under
of
Rate
Restore
Installation
Surge
Electrical
Settings Trouble Servicing Periodic Renewal
Shooting
Checks
Parts
Frequency
Change Frequency Restoration
Voltage Voltage
Input
Ratings
Description
Handling
Tests
Testing
Outputs
Frequency Over Over
Frequency Under Under
Change RateofChange Rate
Relay Restore Restore
Procedure
Ground
Tests
and
Considerations
Relay Frequency Frequency
Relay Frequency Frequency
for
of
Change
Tests
With
Test Test
With
and
Routine
Storage
Tests Test Test
Tests Test Test
Multiple
Test Test
Variable Single
Maintenance
With With
With With Setpoint
for
Variable
for
Single
of
Variable Single
Variable Single
or
Frequency
or
Line
Contents
Frequency
or
Line
Frequency
or
Line
Models
Frequency
Line
Frequency
Frequency
Frequency
Only
Generators
Frequency
Generator
Generator
Generator
Page
3 4 4 5 5 6 7 7 7 7 7 7 8 8 8 8 9
9 10 10 10 10 11 11 11 11
12 12 12 13 14 14 14 15 15 16 16 17 17 17 18 18
18 18 19 19 20
Cover
2
Photo:
8043796
GEK-90636
The frequency. frequency
can and
ranse
independently
be has
of 40 SFF2O(-)B.Ifa frequency
A
simple
models.
frequencyifthe
with
the higher
SUP
type
Three
setpoints.
I
form
C
79.9
to
will
rate-of-change
When
this
relays
are
versions
EachSthe
for
set
output
contact.
Nzin0.1 Hz
frequency
be
prevented
setting
featureisenabled,
next
lower frequency
frequency
set
digital
of
the
under
from
(ROC)
can
relayissettooperateat59Hzwith delay. associated the second
setpoint
output frequency
under
whereasitis Timer
full
and
The
minimum
to
frequency
ranges
If
58
with
0.75
seconds
third
relay.
occuris3
setpoint
used
are
Hzisreached
the
59
has
Hz
setting
expired.
setpoints
operating
cycles.
wherein
or
over
frequency
prolong
to shown
below:
0.5
and
between
time
In
addition, an adjustable
a delay the
output
DESCRI
frequency
5FF
are
frequency
frequency,
Each
element
steps
in
outside
operating.
feature
an
setpoint
time
out.
an
0.75
seconds
will
operateatthat
Similar
for
an
under
can
be
mode
when
PTION
relays
available
measuring
over
providinç
elements
frequency,
maybeset
the
SFF2O(-)A
of
the acceptable range
can
output
For
second
after
enabled
be
will
be
is
reached
example,
delay.
59
Hzisreached,
and
time
performance
the
third
canbeobtained
and
fourth
frequency,
addedtothe this
the
time
function
is
that
measure
is
or
for
any
and
0.01
on
the produced before
the assume
at
58
rather
setpoints
over
frequency,orrestore
timer
is provided for
output. used
to
is
usedinthe
the
one,
two,
independent,
restore
freQuency
Hz
is
operation,
over
steps
made,
multi-frequency
at
the
higher
timer
thatatwo
Hz
the
than
with
output
waiting
associated
setpoint
aIsecond
between
in
the
When
delay
usedinthe
the
restore
system
or
four
and
the
in
the
that
set
relay
until
the
four
each
output,
mode.
Mpdel
Sfl20(-)A:
SF’F20(-)B: 1.0to255
The
AC
undervoltage
input
time cycle. Note
voltageisless
Sapproximately
The
function
that
the
percentage
example,ifthe input
cutoff
evely Should sufficiently Company.
standards,
vaiy
will
These
instructionsdonot
possible
funher
To
the
extent
gnat4y.
occurat60
contingencytobe
information
flu’
the
purchaseri
required
butnosuch
Timer 0to1.55
0.lto
cutoff
than
the
undervoltage
one-half
is
adjustable
voltage
volts
purport
be
the
products
assuranceisgiven with
(1/2)
is
based
is 110
(50
to
cover
metinconnection
desired
purposes.
25.5
function
cycle
over
on
volts,
percentof120)
all
or
should
the
described
Ranae
seconds
milliseconds
seconds
operatestoblock
the 120
cutoff
and a
range
volts,
and
setting. pickup 535
the
the
rather than
details
or variationsinequipment
with
installation,
particular
matter
herein
respect
should
meet
to
local
The
time
to
95
nominal
cutoff
problems
referred
be
applicable
codes
SteDs
second
.05 1
millisecond
0.lsecond
all
outputs
function
dapproximately
percent
rating
level
is
55
volts
operationormaintenance.
arise
which
to
ANSI,
ordinances
and
whenever
hasadropout
inS
percent
d’the
set
to
50
(50
nortoprouide
are
not
the
General
IEEE
and
because
one
relay.
percent,
percent
covered
Electric
NEMA
the
(1)
stçps.
For
of
for
they
a
The
relays
can
powered
be
from
GEK-90636
either
a
DC
or
AC
source.
External
Figures
1, 2
Table
The
SFF
device
is
conditions. Under
Krequency
connections
and
3,
I
summarizes
series
required
to
the
respectively.
the
models
Model
SFF
201
202
204
of
frequency
for
the
accurate
SFF2O1,
SFF2O2
available.
Table
Case
Size
S2 M2 M2
APPlICATION
relays
can
detection
I
be
and
applied of
under
SFF2O4
Set
Points
1 2 4
wherever
frequency
relays
an
or
can
be
extremely
over
frequency
seen
stable
in
under
The conservation important. load
exceeds
in
danger
used
to
detect
the
loss
of
of
the
system
of
the
entire
overall
An different
a.
ways:
Disconnect successively
b.
Disconnect so
that
Any
c.
Each
frequency
of
the
voltage
under
distorted total Longer the
or
over
so
time
time
frequency
frequency
schemes where
If
a
system
generation,
of
collapsing.
this
condition
generation.
to
recovertonormal,
system
load
blocks
lower
blocks
some
load
combination
measuring
wave
frequency
as
to
affect
setting,
delay
settings
exceeds
trip
accuracy
disturbance
system
Under
and
Sufficient
will
be
facilitated.
conservation
of
load
frequency.
of
load
is
disconnected
of
the
against
a
crystal
before
the
period
is
possible
it
will
the
setting
feature
results
frequency
frequency
to
disconnect
load
or
near
scheme
in
in
several
above.
element
reference and
delay
the
of
for
the
make
for
of
and
repeatability
relays
must
normal
can
several
steps
as
each
in
the
timer
the
wave, relay
this
at
the
in
loss
will
start
distributed
selected
disconnected
be
be
steps
on
time
SFF
is
and
to
less
likely
least
SFF
relays
of
generating
to
frequency.
arranged
with
a
time
step
compares requires
started.
if
this
make
to
one
cycle
of
frequency
decay
system
to
each
basis
reached.
is
If
the
distortion
an
occur.
after
may
and
around
load
enable
to
In
this
trip
off
step
at
one
period
the
three
successive
input
incorrect
On
the
be
used
measurement
capacity
system
the
the
system
to
compensate
the
way,
selected
occurring
frequency
of
voltage
persists
measurement.
the
other
delay
in
load
such
that
may
can
remainder
restoration
load
at
level
cycle
each
cycles
wave
for
the
hand,
timer
is
be
be
for
in
a
of
is
if
is
4
GEK-90636
started, a
new
measurement
An
of
the
potential
not
good section voltage
when
to the this
the
zero
load.
condition setting then
this
A
substation
time
coordination
substation
frequency
the
combined to
trip
and
load
would sources. of
the
under
The power For high the
down drop The the
company
faults
speed
reclosure
during
in
relay
power analyzed the
open
arid
before
important
practice
and
use
and
frequency
circuits
and
often
A
frequency
any).
(if
load
are
decreased
with
lock
not
‘This
problem
frequency
SFF
relay
on
the
reclose.
to
the
frequency
could
system
to
determine
circuit
the
will
consideration
source
supply
to
that
relay
are
de-energized.
different
at
if
the
voltage
the
If
will
be
inadvertently
which
in
load
tripped
fast
a
out
operating
unnecessarily.
then
may
transmission
line,
Itisimportant
prevent
interruption.
that
be
used
before
period.
time
delay
be
started.
from
which
relay
a
to
disconnect
of
circuits
relay
stays
relay
has
is
a
shedding
out,
the
as
the
be
accomplished
could
also
both
trip
be
and
be
ends
damage
might
to
occur
trip
reclosing
the
amount
is
reached,
in
the
the
from
supplying
Rather,
depending
connected
above
connected
disconnected.
large
amount
applications.
motor
motors
under
In
avoided the
level in
used
circuit
of
the
for
to
motors
An
SFF
during
incoming
the
takes
of
application
relay
makes
a
potential
load
on motor both
such
to
the
voltage
to
disconnect
of
load
would
were
slowing
frequency
an
unattended
simply
by
coordinating
by
of
the
an
industrial
that
utilizes
will
line
the
industrial
andlor
relay
the
breaker
place.
frequency
the
timer
of
frequency
its
source
another
load
the
voltage
on
the
characteristics
a
circuit
cutoff
load
motor
load
If
the
tend
down.
relay
may
station,
reenergizing
undervoltage
installation
high
be
tripped.
load
generators
at
the
plant
time
that
to
Each
decay,
will
immediately
be
relays
measurement.
that
is
connected
bus
section.
do
not
go
to
and
the
could
produce setting on
a
separate
may
present
transmission
maintain
to
This
slow
cause
restoration
the
settings
cutoff
that
speed
to
automatic
This
will
disconnected
be
that
could
the
the
be
transmission
plant
application
if
any,
that
is It
For
zero
frequency
the
of
for
the
sources
the
decay
the
motor
the
of
the
function.
is
tapped
be
may used
to
separate
will
will
the
location
is
generally
to
one
example,
immediately
decay
circuit
an
output
time
delay
bus
section,
problem
a
to
voltage
of
voltage
while
breakers
of
the
motor
transmission
time
delay
off
reclosing.
followed
by
prior have to
occur
detect
line
slowed
is
open.
it
from
to
during
and
bus
the
and
for
the
of
the
be
of
a
a
to
Rate
of
Change
The
rate relays, or a
The
F3
rate
and
rate
and
faster
of
position. Over
over
Frequency
The
over
frequency operation load
rejection.
schemes
to synchronous would during
be
used
off-line
of
change
usable
is
F4.
This
than
change
frequency
condition.
at
frequencies
be
used
speeds
to
operation.
only
feature
was
feature
Another
to
or
remove
feature
between
will
anticipated
is
enabled
function
For
example,
above
possible
protect
on
turning
supplemental
available
is
two
allow
when
may rated
application
generator
a
gear.
adjacent
load
to
the
by
setting
be
used
it
can
speed
In
protection
5
only
shed
be
delay
the
anywhere
be
that
of
against
such
in
multi-setpoint
setpoints;
faster
timer
appropriate
that
used
to
could
the
be
over
accidental
schemes
that
is
i.e.,
if
the
settings
it
protect
caused
frequency
the
over
required
models
Fl
and
F2,
frequency
were
ROC
switch
is
desired
generator
a
by
an
function
energization
frequency
to
be
of
the
F2
and
decays
determined.
the
to
detect
to
against
inadvertent
at
function
enabled
SFF
is
sub
only
F3
at
IN
an
in
It
should fashion enabling
be
that
the
recognized
a
loss
of
associated
I)C
when
the
to
off-line
GEK-90636
CAUTION
applying
relay
protection.
will
the
cause
over
frequency
the
output
function
relay
to
in
reset,
this
thus
Load
frequency recovery minutes. can that
Restoration
If
a
load
be
used
can
to
be
availability determines restoration provided related
by
to emergency setpoints time. the
system
Since
they
should
Reconnecting
the
do
not momentarily is
provided whenever below enough
the
to
shedding
will
stabilize,
normal
the
As
to
automatically
restored
of
generation,
whether
program
a
timer
the
amount
conditions.
and
thereby
restoration
reset
reset
with
function
the setpoint. ride
over
program
likely
is
frequency
is
or usually
external
of
staggered
be
loads
minimizes
as
a
result
restore
the
an
adjustable
is
This
momentary
and
through
to
be
approaches
begin
determined
either
not
the
incorporates
to
the
time
required
Also,
both so
on
a
distributed
timers
will
of
output
time
subjected
delay
is
under
has
been
system
quite
the
by
slow normal load
the
locally
shed
load
SFF
to
the
time
all
that
the
possibility
be
set
transient
function.
delay
to a
frequency
adjustable
frequency
successfully
control
and
the
restoration
ability
ol-
through
can
substantial
relay.
add
generation
delay
of
the
basis
for
long
system
For
reset
and
will
may
extend
restore
process.
of
the
be
successfully
time
The
amount
and
load
is
not
also
minimizes
of
initiating
time
frequency
this before change
should
be
conditions.
implemented,
recover
over
a
function
The
system
system
interconnections,
restored.
delay,
of
time
or
to
close
the
restoration
reconnected
power
new
a
delays,
it
oscillations
reason,
the
from
contacts
kept
the
above
very
the
to
normal.
period
in
to
the
amount
serve
of
SFF
which
delay
tie
lines
frequency
at
the
swings
disturbance.
essential
is
that
restore
change
the
setpoint
brief,
only
system
The
several
relay
of
load
it.
The
A
load must to
use
during
same
across
that
may
function
state
long
be
is
to
The
rated
frequency. restore relay
may provided after
load
kept
energized should after
an
has
been
the
restore
restore
frequency
function
be
shortened.
to
control
shedding
de-energized.
be
under
frequency
restored.
function
If
output
until
continuous
the
the
has
all
During
will
setting
relay
To restore occurred
of
the
In
this
condition
normal
not
operate
of
will
prevent
output.
and
load
way,
has
frequency
the
function variations pick
up
this,
CC
when
that
was
the
restore
been
due
to
minor
6
will
most
in
normal
and
drop
contact
a
is
to
be
energized
it
is
desired
shed
has
output
detected and
conditions,
changes
likely
frequency
continually,
out
converter to
restore
been
relay until
CC
in
be
at
designated
by
an
load.
restored
will
the
load
will
be
frequency.
or
very
are
such
that
the
life
external
CC
should
which
at
only
be
operated
that
was
de-energized
close
of
CC
device
time
shed
and
to the the
is
be
it
GEK-90636
SPECIFICATIONS
DC
Control Nominal Minimum Maximum
AC
Control Nominal Minimum Maximum
AC
Measurement Nominal Minimum Maximum
Settings
Frequency
SFF2O(-)A: SFF2O(-)B: Repeatability
Timing
SFF2O(-)A: SFF2O(-)B:
Repeatability
Voltage
48,
110,
Volts
37
280
Voltage
110-120
45
Vrms
132
120
Vrms
42
Vrms
132
125,
Volts
Vrms
Vrms
Input
Vrms
±0.002
±
220,
(35%
(110%
3%
250
of
nominal)
of
Hz
nominal)
Setpoint Setpoint
Setpoint Setpoint
Setpoint
40.0
40.0
to 1.55
0
1
to
0.lto
to
79.9
to
79.9
seconds
255
milliseconds
25.5
Hz
in
Hz
in
seconds
0.1
0.01
in
in
Hz
0.05 in
0.1
steps
Hz
steps
second
1
millisecond
second
steps
steps
steps
Undervoltage
Setpoint Setpoint
Repeatability
Rate
change
of Frequency Frequency
Frequency
Environmental
Operating
-20°C
will
not
malfunction,
Storage
-40°C
Surge
ANSI IEC 255 GE
RFI
35% Accuracy
(multi-setpoint
1
to
2
to
3
to
to
+55°C
to+75°C
C37.90
(SWC
to
95%
±5%
±3%
frequency frequency frequency
95%
nor
95%
in
5%
of
setting
relative
be
relative
and
Fast
steps
from
models
2:
IN
or
IN
3:
4:
IN
or or
humidity
damaged,
humidity
Transient)
based
35%
only) OUT OUT OUT
in
on
l2OVrms
to
90%
(noncondensing).
ambient
up
to
(noncondensing)
nominal
65°C
+
Note
that
the
unit
7
Burden
Model
SFF
Case
Size
Set
Points
GEK-9063
RATINGS
Table
48
II
Power
DC 125
Burdens
Supply
250
AC VA 120
Measurement
AC VA
Contact
Make DC
AC Target amps.
The
front
of
only
is
necessary
Frequency
frequency
stated
201 202 204
Ratings
and
carry Break Break 277
Volts
supervision
following
relay
the
A
of
each
range,
60 25
to
three
that
S2 M2 M2
30
amps
Watts
VA
maximum
settings,
without
remove
or
setpoint
frequency
Resistive
ms
(40 unit
which
the
four
for
0.1
the
digit
to
1 2
4
1
second.
L/R)
Amperes
5
amp
must
need
front
thumbwheel
be
set.
setpoint
operate
SWFTI
be
for
pulling
cover
3.2
4.9
8.4
set
from
Note:
will
level
NGS
in
if
be
3.5
5.2
8.7
with
each
boards
the
relay.
switch
setting
a prevented
6.3
8.0
11.5
than
less
application,
or
removing
on
the
is
front made
from
8.1
10.6
15.7
0.6
are
the
operating.
volt
made
nameplate.
panel
outside
1 1
1
drop
from
allows
of
at
30
the
It
the
the
Function modes delay
Rate the It
of
rate
is
disabled
and
Time
delay.
Voltage
used
to
the
switches
A
of
operation.
the
Change
of
change
Delay
setting
The
Cutoff
choose
three
contact
(Multi
when
An
the
in
the
position
When
the
converter
frequency
function.
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FUNCTIONAL
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DESCRIPTION
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GEK-90636
CONSTRUCTION
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figure
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1.5sec
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1.5sec
To
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to
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figure
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Frequency,
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frequency
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light
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cycles
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12
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rated
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frequency.
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at
test
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set the the
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4.
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supply
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note
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t
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setpoints.
rated
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frequency.
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example,
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6.
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above
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4.
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applying
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frequency
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frequency
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during
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supply
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supply
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voltage
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or
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at
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(2).
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stud(S)
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step target all
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undervoltage
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during
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setting
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14
to
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at
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and
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repeat there
the
should
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test
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trips,
disable
or
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