390 / 582
BETA Switching
Timers
7
LF5 mechanical time switches
9/12
Siemens ET B1 · 10/2008
9
■
Technical specifications
Synchronous time switches
without power reserve
Quartz-clock time switches
with power reserve
7
LF5
300-1
7
LF5
300-5
7
LF5
300-6
7
LF5
300-7
7
LF5
301-0
7
LF5
301-1
7
LF5
301-4
7
LF5
301-5
7
LF5
301-6
7
LF5
301-7
7
LF5
305-0
Standards
EN 60730-1, -2-7, UL 917
Approved acc. to
UL 60730-1, -2-7/UL 917, CSA C22.2 No. 14 and 177
Operating mode
Synchronous
Quartz
•
Time program
Day
Day
Week Hour
Day
Day
Day
Week Day
Week Day
Supply
•
Rated control supply voltage U
c
V AC 230
230
-
Operating range
× U
c
0.85 ... 1.1
0.85 ... 1.1
•
Rated frequency
Hz 50
50
-
Frequency ranges
Hz 50
50/60
•
Rated power dissipation P
v
VA 1
1
0.2
0.2
1
1
1
Channels/contacts
•
Switching channels
1
1
-
Rated operational voltage U
e
V AC 250
250
-
Rated operational current
I
e
At p.f. = 1
A 16
16
At p.f. = 0.6
A 4
4
•
Contacts
1
NO 1 CO 1 CO 1 NO 1 CO 1 NO 1 CO 1 CO 1 CO 1 CO 1 CO
-
Mechanical switching cycles
In millions 20
20
-
Electrical switching cycles at p.f. = 1
100 000
100 000
•
Minimum contact load
V; mA 4; 1
4; 1
-
Incandescent lamp load
A 5
5
-
Fluorescent lamps
At 7 A
VA 60
60
Uncorrected
VA 1400
1400
Safety
•
Different phases permissible
between drive/contact
Yes
Yes
•
Electrical isolation, creepage distances
and clearances, actuator/contact
mm 8/6
8/6
•
Rated impulse withstand voltage U
imp
operating mechanism/contact
kV 4
4
-
EMC: Burst acc. to IEC 61000-4-4
kV > 4.4
> 4.4
-
EMC: Surge acc. to IEC 61000-4-5
kV > 2.0
> 2.0
-
Electrostatic discharge acc. to
IEC 61000-4-2
kV > 8.0
> 8.0
•
Power reserve storage
a --
100
h 6
100
h
-
Minimum loading time
h --
48
--
48
-
Battery type
--
NiMH cell Li primary cell
NiMH cell
-
Service life of battery
At 20 °C
a --
6
10
6
At 40 °C
a --
5
•
Overvoltage category acc.
to EN 61010-1
III
III
Function
•
Minimum switching sequences
min 30
240
5
30
30
240
30
240
30
•
Make and break cycles
min 15
120
37.5
s 10
15
120
15
120
10
•
Switching accuracy
min ± 5
± 30
± 0.2 ± 5
± 5
± 30
± 5
± 30
± 5
•
Clock errors per day
System-synchronized
± 2.5 s ± 60 s/year
± 2.5 s
Terminals
•
Terminals ± screw (Pozidriv)
PZ 1
PZ 1
•
Conductor cross-sections of
main current paths
-
Rigid, max.
mm
2
4
4
-
Rigid, min.
mm
2
1.5
1.5
-
Flexible, with end sleeve
mm
2
2.5
2.5
-
Flexible, without end sleeve
mm
2
4
4
Environmental conditions
•
Permissible ambient temperature
°C -10 ... +55
-10 ...
+55
•
Storage temperature
°C -10 ... +60
-10 ...
+60
•
Resistance to
climate
Acc. to EN 60068-1
10/055/21
10/055/21
•
Degree of
protection
Acc. to EN 60529
IP20, with connected conductors
IP20, with connected conductors
•
Safety class
Acc. to EN 61140
II
II
© Siemens AG 2008