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BETA Monitoring
Monitoring of Electrical Values
7
LQ3 insulation monitors for medical premises
13/26
Siemens ET B1 · 10/2008
13
Insulation monitors
7
LQ3 354
7
LQ3 355
Output relay
Contacts for
Overtemperature
Overload
Insulation fault
2
CO
2
CO
2
CO
Mode of operation
Working current
Contacts
NO contact AC 15
NC contact AC 15
A AC/V AC
A AC/V AC
3/230
1/230
Electrical service life
AC 15, 1 A, 230 V AC Operating
cycles
30 000
Thermal current
A AC
5
Connection
Terminals
•
Conductor cross-sections
±
screw (Pozidriv)
Rigid
Flexible, with end sleeve
mm
2
mm
2
2
2
× 2.5
1
× 2.5
Environmental conditions
Permissible ambient temperature
°C
-20 ...
+60 °C.
Resistance to climate
Acc. to EN 60068-1
20/060/04
Degree of protection
Acc. to EN 60529
IP20, with connected conductors
Mounting position
Any
Vibration stress
Acc. to IEC 60068-2-6
•
Amplitude
mm
0.35
•
Frequency
Hz
10 … 55
Test and signaling panels
7
LQ3 356
7
LQ3 357
Standards
DIN VDE 0100-710; IEC 60364-7-710
Rated voltage U
n
V AC/DC 24
Rated impulse withstand voltage
Acc. to IEC 60664-1
kV
4
Voltage range
AC
DC
0.8 ... 1.1
U
n
0.9 ... 1.2
U
n
Rated current per input
mA
0.25
Rated consumption
VA
6
Rated operating mode
Continuous operation
Degree of pollution
Acc. to IEC 60664-1
2
Degree of protection
•
Enclosures
Acc. to IEC/EN 60529
IP40
•
Terminals
Acc. to IEC/EN 60529
IP20
Flammability class
UL 94V-0
Vibration strain
Acc. to IEC/EN 60068-2-6
•
Amplitude
mm
0.35
•
Frequency
Hz
10 … 55
Resistance to climate
Acc. to IEC/EN 60068-1
20/045/04
Terminal marking
EN 50005
Connection of conductors
Acc. to DIN 46228-1/-2/-3
•
Solid
mm
2
mm
2
1
× 1.5
2
× 0.5
•
Strand
mm
2
mm
2
1
× 1
2
× 0.2
•
Strand with sleeve
mm
2
1
× 0.5
Conductor mounting
Box terminals with wire protection
Net weight
g
200
Device dimensions
mm
80
× 160 × 57
82
× 150 × 57
Temperature range
°C
-20 ...
+45
© Siemens AG 2008