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QS3 Power Supply Instruction Manual
Technical Data
QS3.241
Output Voltage
DC 24-28V
Factory Set
typ.
24.1V
Output Current
min
3.4-3.0A
min
5.0-4.5A
Output Power
min.
80W
min.
120W
Output Ripple
max.
50mVpp
Over-voltage Protection
max.
36Vdc
AC Input Voltage
-
AC 100-240V
AC Input Current
max.
1.8-1.0A
DC Input
-
DC 110-300V -20/+25%
DC Input Current
max.
0.85-0.3A
Power Factor
typ.
0.55-0.47
AC Inrush Current
max.
6A peak, 2A
max.
7A peak, 2A
max.
13A peak, 2A
Efficiency
typ.
88.7 / 90.0%
Losses
typ.
10.4 / 9.1W
Hold-up Time
typ.
28ms
typ.
41ms
typ.
174ms
Capacitive Loads
-
No limitations
Inductive Loads
-
No limitations
Limited Warranty
-
3 year
Functional Diagram
L
Input Fuse
Input Filter
N
Input Rectifier
Inrush Limiter
Transient Filter
Temper-
Output
Output
ature
Power
Shut-
Voltage
Manager
down
Protection
Overload Performance
The unit is designed to support loads with a higher short-
term power requirement without damage or shutdown.
28V
24V
20V
continuous
16V
Short
12V
term
8V
4V
0V
0A
1A
2A
3A
4A
5A
6A
Output characteristic (typ.)
Curve is valid for the 24V unit. Units with
output voltages other than 24V have an
equivalent and proportional performance.
Environment
Operational temperature
-25 to +70°C
Storage temperature
-40 to +85° C
Humidity
5 to 95% RH
Vibration sinusoidal
2g
Shock
30g 6ms, 20g 11ms
150%
125%
Allowed output current versus
100%
the ambient temperature
75%
50%
Ambient temperature is defined
25%
2cm below the unit.
All manuals and user guides at all-guides.com
externally adjustable
at full rated load
continuous
for typ. 4 sec
continuous
for typ. 4 sec
BW DC to 20MHz
, 50-60Hz
TN, TT and IT mains
-15/+15%
at 100 - 240Vac
at 110 - 300Vdc
at 100 - 230Vac
2
s
at 100Vac
2
s
at 120Vac
2
s
at 230Vac
at 120 / 230Vac
at 120 / 230Vac
at 100Vac
at 120Vac
at 230Vac
Output
Voltage
Regulator
Output
Power
Converter
Filter
Output
Voltage
Over-
Monitor
10s
9s
8s
7s
6s
max.
5s
4s
3s
min.
2s
1s
0s
110% 120% 130% 140% 150% 160%
Bonus time
Duration until the output starts dipping.
Bonus Time is hardware controlled.
min. / typ. / max.
De-rate above +60°C
Storage, transport
No condensation allowed
IEC 60068-2-6
IEC 60068-2-27
for ty p. 4s
continuous
Ambient Temperature
0%
-40°C -20°C 0°C
20°C 40°C 60°C 80°C
Dielectric Strength
Input
L
V
N
OUT
+
A
+
-
Earth
-
Type Test
Over-
load
Factory Test
DC
Field Test
ok
Repetitive pulse loading:
P
P
T
OUT
PEAK
PEAK
max.
150%
100%
P
0
0%
Protection
Output
Degree of protection
Class of protection
Degree of pollution
Over-temperature protection
Output over-voltage protection
Over-voltage category
Penetration protection
Internal input fuse
External protection
Type tests and factory tests:
Conducted by the manufacturer.
Do not repeat test in field!
Field test rules:
Output
(1) Use appropriate test equipment which
apply the voltage with a slow ramp!
+
(2) Connect L and N together as well as all
-
output poles.
(3) Use only AC test-voltages with 50/60Hz.
The output voltage is floating and has no ohmic
reference to ground.
A
B
60s
2500Vac
3000Vac
500Vac
5s
2500Vac
2500Vac
500Vac
5s
2000Vac
2000Vac
500Vac
Multiple pulses can be supported as long as the average
(R.M.S.) output current stays below the specified continuous
output current. If it is higher, the unit will respond with a
thermal shut-down.
Examples for pulse load
compatibility:
T
0
P
P
PEAK
0
120W
80W
120W
0W
120W
40W
120W
40W
t
120W
40W
t
Overload, no-load, short-circuit proof
IP 20
EN/IEC 60529
I
PE (Ground) connection required!
2
EN 50178, not conductive
yes
Output shut-down with automatic restart
yes
Output shut-down with automatic restart
III
EN 50178
>3.5mm
e.g. screws, small parts ...
T6.3A
Device protection, not externally
accessible
The unit is tested and approved for branch circuits
up to 20A. External protection is only required, if the
supplying branch has an ampacity greater than this.
The minimum rating of an external circuit breaker or
fuse shall be 6A (B-characteristic) or 6A (C-
characteristic) to avoid a wrong tripping of the fuse.
C
T
T
PEAK
0
1s
>25s
1s
>1.3s
0.1s
>0.16s
1s
>1.6s
3s
>4.9s
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