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MOTOR
PROTECTION
RELAY
TOSHIBA
MODEL
S2E21
TOSHIBA'S
motor
protection
relay,
Model
S2E21,
is
a
total
motor
protection
and
monitoring
package
for
all
motor
applications
.
It
has
all
the
protective
features
necessary,
including
a
display
of
running
event
data
.
FEATURES
1
.
TEMPERATURE
SIMILATION
FOR
OVERLOAD
4
.
MAINTENANCE
DATA
Every motor
application
is
protected
by
Rotor
and
stator
temperatures,
number
of
temperature
similation
used
for
overload
starts,
running
time,
history
of
key
parameters
protection
.
before
trip,
running
event
data
.
2
.
SIMPLE
OPERATION
S
.
MONITORING
SYSTEM
Relay
programming
is
made
simple
by
clear,
Built-in
memory
card
supports on-going
main-
easy
to
follow
instructions,
large
LCD
display
tenance
procedures
.
with
integral
programmer,
or
by
computer
.
3
.
ALL
TYPES
OF
PROTECTION
G
.
COMMUNICATIONS
Thermal
overload,
instantaneous
overcurrent,
Standard
RS485
communication
port
is
stan
overcurrent,
current
unbalance,
undercurrent,
dard
for
all
relays
.
locked
rotor,
repeated
starting
and
ground
fault
.
PROTECTIVE
FUNCTIONS
RATINGS
Feature
Device
No
.
ITEMS
DESCRIPTION
Overload
49
AC
100V
-
120V
Short
Circuit
-
Control
power
supply
DC
100V
-
125V
Instantaneous
Overcurrent
50
Rated
frequency
50/60
Hz
Overcurrent
51
Rated
current
1A/5A
CT
secondary
current
Current
Phase
Unbalance
46
Applicable
Ambient
temp
.
-10
to
+60°C
-20
to
+60°C
in
storage
and
transportation)
Stator
and/or
environment
Humidity
20
to
85%
RH
no
condensation)
Bearing
38/49
Altitude
2000m
(6600ft)
max
.
Overtemperature
Dielectric
strength
AC
2000V,
for
1
min
.
Undercurrent
37
Current
1
.3
x
rated
current
continuously
.
Zero
Sequence
Performance
withstand
40
x
rated current
for
1
sec
.
Ground
Fault
50G/51
G
Vibration
16
.7
Hz,
total
amplitude
3mm
Locked
Rotor
and
withstand
(3
directions,
2
hours)
Starting
Time
Failure
48
Shock
withstand
10G
3
directions,
2 hours
Repeated
Starting
66
TRIP
1C
(FAIL-SAFE/NON-FAIL-SAFE)
Two
Auxiliary
Inputs
for
External
Fault
Relays
Output
Contact
LOCK
1
C
(FAIL-SAFE/NON-FAIL-SAFE)
ALARM
1
C
(FAIL-SAFE/NON-FAIL-SAFE)
ERROR
1C
(FAIL-SAFE/NON-FAIL-SAFE)