1SVR550800R9300 ABB, 1SVR550800R9300 Datasheet - Page 2

• Manufacturer Part Number: 1SVR550800R9300
• Description: 55T7541
• Manufacturer: ABB
• Series: CM-MSEr

Specifications of 1SVR550800R9300

• Contact Configuration: 1NO
• Relay Mounting: DIN Rail
• Svhc: No SVHC (20-Jun-2011)
• Approval Bodies: GOST, UL
• Contact Current Ac Max: 4A
• Contact Current Dc Max: 4A
• Rohs Compliant: Yes

2
Operating principle and fi elds of application for thermistor motor protection relays
The CM range of thermistor motor protection relays are used to
control motors equipped with PTC temperature sensors. The
PTC temperature sensors are incorporated in the motor windings
to measure the motor heating. This enables direct control and
evaluation of the following operating conditions:
½
½
½
½
½
½
½
The relay is independent of the rated motor current, the insulation
class and the method of starting.
The PTC sensors are connected in series to the terminals T
(or T
sible PTC sensors per measuring circuit is limited by the sum of the
individual PTC sensor resistances: R
Under normal operating conditions the resistance is below the
response threshold. If only one of the PTC resistors heats up
excessively, the output relay de-energizes. If the autoreset function
is confi gured, the output relay energizes automatically after cooling
down.
Devices with manual (pushbutton on front-side) or remote reset
confi guration have to be controlled via the control input by the
required signal.
Selection table thermistor motor protection relays
1) confi gurable via terminals
2) Auto reset without non-volatile fault storage confi gurable by permanent jumpering of connecting terminals S1-T2 or S1/X1-S2/X2
2/68
2CDC110004C0207
Type
Function
Measuring range
Number of
sensor circuits
Wire break
monitoring
Short-circuit
detection
Non-volatile
fault storage
Operation/Reset
Auto reset
Manual reset
Remote reset
Test button
Output contacts
Operational
principle
Number / type
Width
of enclosure
Supply voltages
and order codes
24 V AC
24 V AC/DC
110-130 V AC
220-240 V AC
380-440 V AC
24-240 V AC/DC
heavy duty starting
increased switching frequency
single-phase operation
high ambient temperature
insuffi cient cooling
break operation
unbalance
a
and T
bx
without short-circuit detection). The number of pos-
1SVR550805R9300
1SVR550800R9300
1SVR550801R9300
CM-MSE
1 c/o
1
•
–
–
•
–
–
–
1SVR430800R9100
1SVR430801R1100
CM-MSS (1)
1 n/o
1
•
•
–
–
–
–
–
Thermistor motor protection relays
CM-MSE, CM-MSS, CM-MSN
Benefi ts and advantages, Selection table
G
= R
1
+ R
1SVR430811R9300
1SVR430810R9300
1SVR430811R0300
1SVR430811R1300
CM-MSS (2)
2
+ R
2 c/o
•
•
•
•
1
–
–
–
N
1.5 k .
1SVR430710R9300
1SVR430711R0300
1SVR430711R1300
1SVR430711R2300
a
CM-MSS (3)
and T
2 c/o
•
•
•
•
•
1
–
–
1)
b
22.5 mm
closed-circuit principle
1SVR430720R0400
CM-MSS (4)
1 n/o + 1 n/c
Further applications:
Temperature monitoring of equipment with PTC sensors integrated,
such as
½
½
½
½
½
•
•
•
•
•
•
•
1
machine rolling bearings,
hot-air ventilators,
oil,
air,
heating installations, etc.
2)
2)
Resistance characteristic
for one single temperature sensor acc. to DIN 44 081.
1SVR430720R0300
CM-MSS (5)
2 c/o
•
•
•
•
•
•
•
1
2)
2)
1SVR430710R0200
sensor circuit
CM-MSS (6)
1 c/o
•
per
2
•
•
–
•
•
•
2)
NAT = Nominal response
1SVR430720R0500
1 n/o + 1 n/c
accumulative
CM-MSS (7)
evaluation
temperature
•
•
3
•
•
•
•
•
2)
2)
1SVR450025R0100
accumulative
1 n/o + 1 n/c
CM-MSN
evaluation

45 mm
•
•
•
•
•
•
•
6
2)
2)