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Idiomas disponibles
Idiomas disponibles
!
WARNING
Hazardous voltages are present in certain parts of this electrical equipment during operation. Incorrect handling of the equipment can result in
death, severe personal injury or substantial property damage. Only qualified personnel are allowed to work on or around this equipment. The
successful and safe operation of this equipment is dependent upon proper transport, storage and installation. Before installation or
maintenance work is carried out, the main switch must be switched off and locked to prevent it from being switched on again. If these rules are
not adhered to, contact with live parts or improper use can result in death or severe personal injury.
Important Note: Input 3 phase circuit breaker is required! (Refer to "Input Data")
CAUTION
The device may only be opened by qualified personnel. Electrostatically sensitive devices (ESD)
Description and construction
The SITOP power supplies 48V/20A are built-in units. The relevant DIN/VDE regulations or equivalent local regulations must be observed during installation.
Primary switched-mode power supplies for connection to a 400 to 500V (400 to 460V for IT-Systems), 50/60Hz three-phase AC system (TN-, TT- or IT-system
acc. to VDE 0100 T 300 / IEC 364-3); Output voltage +48V DC, potential-free, short-circuit resistant and stable under no-load conditions.
Technical specifications
6EP1457-3BA00
Input data
Input voltage V
:
in
3ph. AC 400-500V, 50/60Hz
Voltage tolerance
320...550V
(320...360V permissible at V
< 52V)
out
Overvoltage proof:
according to EN 61000-4-1 A.2
Mains buffering time at 400 V :
6ms
Input current I
at 400V:
in
2.2A
rms
Inrush current is limited to (25 °C) :
2
<70A, <2.8A
s
Required 3-ph. miniature circuit breaker:
10 to 16A characteristic C:
Alternative: motor circuit-breaker
3RV1021-1DA10, Setting of the thermal
overcurrent trip: 3A, or 3RV1721-1DD10
(UL489 – Listed)
Efficiency at full load (typical):
90%
Power input (active power):
1070W
Installation
Mounting on a DIN EN 50022-35x15 standard rail. To ensure adequate convection, the device must be installed vertically, with the input and the output
terminals at the bottom. Be sure to leave a minimum clearance of 50 mm above and below the device.
The supply voltage (3-ph. AC 400 to 500V) must be connected in accordance with VDE 0100 and VDE 0160. It is important to provide the protective device
referred to above (circuit-breaker or motor circuit-breaker) and the disconnecting device for isolating the power supply. A current-operated earth-leakage circuit-
breaker must not be the sole device used where protection against indirect contact is required. The same applies for the entire system protected by a current-
operated earth-leakage circuit-breaker.
Parallel operation and response to short circuit (Position of switch: Refer to page 2)
Selector switch
Function
A
For sharing the loads in parallel operation, the units can be switched from individual operation (OFF switch position) to parallel operation
(ON switch position). The ON switch position causes the output characteristic curve to slope.
B
In the OFF switch position (constant-current mode) the unit supplies a constant current of approx. 1.15 x rated current in the event of
overload/short-circuit. In the ON position (shutdown mode) the unit is shut down if overloading occurs for longer than approx. 100ms. The
unit can be reset by OFF mains supply for at least 5s.
Connections and terminal assignment
Terminals
Function
L1, L2, L3
Input voltage 3-ph. AC 400 to 500V
PE
Protective earth conductor
Output voltage DC 48V
+, −
The optional 6EP1961-3BA10 module can be used for signaling (operation ready, output voltage) and for switching ON/OFF remotely.
1)
SIEMENS AG ÖSTERREICH, 08.2013
Output data
DC output voltage V
:
out
As delivered : 48 V 1%
Setting range: 42 to 56V, adjustable by
potentiometer on front of device (see page 2 for
position)
Derating at U
> 48V:
a
4% I
or 3°C t
/ V U
a
amb
a
Ripple content of output voltage:
<100mV
ripple
pp
<200mV
spikes
pp
DC output current I
:
out
0-20A
Two power supplies of identical design may be
connected in parallel in order to improve the
performance. Output characteristics can be
selected with switch A (refer to page 2).
Environmental conditions
Temperature
Storage and transport: -40 to +85 °C [-40 to 185°F]
Operating:
0 to +60 °C [+32 to +140°F]
Humidity:
according to EN 60721 class 3K3; no condensation
Pollution degree 2
Natural convection should be allowed to form
Weights
3.2kg [7.11lb.]
Terminal range
2
0.14 to 4 mm
AWG 24 to 12
2
0.33 to 10mm
AWG 22 to 8
4/8
Protection and monitoring
functions
Steady-state current limitation: typ. 1.15 x I
Response to short circuit (output):
Constant current or shut down can be selected
with switch B (refer to page 2 for item number)
Signaling:
Green LED:
Yellow LED:
Red LED:
1)
Signals
Standards and specifications
Degree of protection IP20 to IEC 529
Protection class 1
Safety to VDE 0805 (EN 60950): SELV
Safe electrical isolation met in accordance with
EN60950; EN 50178; VDE100-Part410; EN
61140+EN60947-1 (corresponds to
VDE0140+VDE0660-Part 100 and replaces VDE
0106-Part101)
Emission: EN 50081-1,
RI suppression to EN 55022, limit curve B
Noise immunity to EN 61000-6-2
Limiting of input current harmonics to EN 61000-3-
2
cULus (UL 508), File E197259
Remarks
Screw-type terminals. Use a screwdriver with a blade width of
3.5mm. Recommended tightening torque 0.5-0.7Nm
Screw-type terminals. Use a screwdriver with a blade width of 5mm.
Recommended tightening torque 1.2Nm.
English
out
Output voltage >38V
Overload; output voltage < 38V
("constant current" mode only)
Latching shutdown
("shutdown" mode only)
or remote OFF by means of the
optional 6EP1961-3BA10 module
SITOP modular 48V/20A
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