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CS20.241, CS20.241-A1
C-Series
24V, 20A, S
INGLE
P
HASE
I
NPUT
Preliminary
16. P
ROTECTION
F
EATURES
Output protection Electronically protected against overload, no-load and short-circuits
*)
Output over-voltage protection typ. 30.5Vdc
max. 32Vdc In case of an internal power supply defect, a redundant
circuit limits the maximum output voltage. The output
shuts down and automatically attempts to restart.
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 5mm e.g. screws, small parts
Over-temperature protection yes Output shut-down with automatic restart
Input transient protection MOV (Metal Oxide Varistor)
Internal input fuse T10A H.B.C. not user replaceable
*) In case of a protection event, audible noise may occur.
17. S
AFETY
F
EATURES
Input / output separation
*)
SELV IEC/EN 60950-1
PELV IEC/EN 60204-1, EN 50178, IEC 62103, IEC 60364-4-41
double or reinforced insulation
Class of protection I PE (Protective Earth) connection required
Isolation resistance > 5MOhm input to output, 500Vdc
PE resistance < 0.1Ohm
Touch current (leakage current) typ. 0.30mA / 0.74mA 100Vac, 50Hz, TN-,TT-mains / IT-mains
typ. 0.43mA / 1.08mA 120Vac, 60Hz, TN-,TT-mains / IT-mains
typ. 0.73mA / 1.70mA 230Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.38mA / 0.90mA 110Vac, 50Hz, TN-,TT-mains / IT-mains
max. 0.55mA / 1.31mA 132Vac, 60Hz, TN-,TT-mains / IT-mains
max. 0.96mA / 2.09mA 264Vac, 50Hz, TN-,TT-mains / IT-mains
*) double or reinforced insulation
18. D
IELECTRIC
S
TRENGTH
The output voltage is floating and has no ohmic connection to the ground. Type and factory tests are conducted by
the manufacturer. Field tests may be conducted in the field using the appropriate test equipment which applies the
voltage with a slow ramp (2s up and 2s down). Connect all input-terminals together as well as all output poles before
conducting the test. When testing, set the cut-off current settings to the value in the table below.
Fig. 18-1 Dielectric strength
A B C D
Type test 60s 2500Vac 3000Vac 500Vac 500Vac
Factory test 5s 2500Vac 2500Vac 500Vac 500Vac
Field test 5s 2000Vac 2000Vac 500Vac 500Vac
Cut-off current setting > 15mA > 15mA > 20mA > 1mA
A D
C
B
B
N
L
Input DC-ok
Earth, PE
Output
-
+
To fulfil the PELV requirements according to EN60204-1 § 6.4.1, we
recommend that either the + pole, the – pole or any other part of
the output circuit shall be connected to the protective earth
system. This helps to avoid situations in which a load starts
unexpectedly or can not be switched off when unnoticed earth
faults occur.
Jan. 2012 / Rev. 0.5 DS-CS20.241-EN Preliminary
All parameters are specified at 24V, 20A, 230Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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