Toshiba S2E21 - Features; Protective Functions; Ratings

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)