Datasheet

QT20.241, QT20.241-C1
Q-Series
24V, 20A, THREE PHASE INPUT
Oct. 2006 / Rev. 1.0 DS-QT20.241-EN
All parameters are specified at 24V, 20A, 3x400Vac, 25°C ambient and after a 5 minutes run-in time unless otherwise noted.
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13/23
18. PROTECTION FEATURES
Output protection Electronically protected against overload, no-load and short-circuits
Output over-voltage protection typ. 32Vdc
max. 35Vdc
In case of an internal power supply defect, a redundant
circuitry limits the maximum output voltage. The output
shuts-down and automatically attempts to restart.
Degree of protection IP 20 EN/IEC 60529
Penetration protection > 3.5mm e.g. screws, small parts
Over-temperature protection yes Output shut-down with automatic restart
Input transient protection MOV (Metal Oxide Varistor) and active transient filter
Internal input fuse Not included See section 27.6
Note: In case of a protection event, audible noise may occur.
19. SAFETY
Input / output separation SELV IEC/EN 60950-1
PELV EN 60204-1, EN 50178, 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 Between housing and PE terminal
Touch current (leakage current) < 0.5mA 3x 440Vac, 50Hz, TN mains
< 0.7mA 3x 528Vac, 60Hz, TN mains
typ.xxmA 3x 400Vac, 50Hz, TN mains
typ.xxmA 3x 480Vac, 60Hz, TN mains
20. DIELECTRIC STRENGTH
Fig. 20-1 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
A
D
C
B
B
L1
Input DC-ok
Earth
Output
-
+
L3
L2
Type tests and factory tests:
Conducted by the manufacturer. Do not repeat test in field!
Rules for field test:
Use appropriate test equipment which applies the voltage
with a slow ramp! Connect L1, L2 and L3 together as well as
all output poles.
The output voltage is floating and has no ohmic connection to ground.
To fulfill 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 any more when unnoticed earth faults occur.