Siemens SITOP modular 20 Instructions page 4

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 24V/20A and 40A power supplies 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 +24V DC, potential-free, short-circuit resistant and stable under no-load conditions.
Technical specifications
6EP1436-3BA00 6EP1437-3BA00
Input data
Input voltage V :
in
3ph. AC 230/400V to 288/500V, 50/60Hz
Voltage tolerance
320...550V
(320...360V permissible at V < 27V)
out
Overvoltage proof:
according to EN 61000-4-1 A.2
1)
Mains buffering time at 400 V :
6ms 6ms
Input current I at 400V:
in
1.1A 2.2A
rms rms
Inrush current is limited to (25 °C) :
2
<35A, <0.7A s <70A, <2.8A
Required 3-ph. miniature circuit breaker,
characteristic C:
6 to 16A 10 to 16A
Alternative: motor circuit-breaker
3VU1300-0MJ00 or 3RV1021-1DA10, Setting of
the thermal overcurrent trip: 3A
Efficiency at full load (typical):
90% 90%
Power input (active power):
540W 1060W
Installation
Mounting on a DIN EN 50022-35x15/7.5 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
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 500 V
PE Protective earth conductor
1, 2 Output voltage DC 24 V
1) The optional 6EP1961-3BA00 module is available for longer mains buffering times of up to 3 s, while the optional 6EP1961-3BA10 module can be used for
signaling (input voltage, output voltage) and for switching ON/OFF remotely.
SIEMENS AG ÖSTERREICH, 07.2003
Output data
DC output voltage V
As delivered : 24 V ±1%
Setting range: 24 to 28.8V, adjustable by
potentiometer on front of device (see page 2 for
position)
Derating at U > 24V:
a
4% I or 3°C t / V U
a amb
Ripple content of output voltage:
<100mV ripple
pp
<200mV spikes
pp
DC output current I
0-20A
Two power supplies of identical design may be
2
s 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: -25 to +85 °C [-13 to 185°F]
Operating:
Humidity:
according to EN 60721 class 3K3; no condensation
Natural convection should be allowed to form
Weights
2 kg [4.41lb.]
(Position of switch: Refer to page 2)
Terminal range
0.2 to 4 mm
AWG 24 to 10
0.33 to 4(10)mm
AWG 22 to 10(8)
4/8
:
out
a
:
out
0-40A
0 to +60 °C [+32 to +140°F]
3.2 kg [7.11lb.]
Remarks
2
Screw-type terminals. Use a screwdriver with a blade width of
3.5 mm. Recommended tightening torque 0.5-0.7 Nm
2
Screw-type terminals. Use a screwdriver with a blade width of 5mm.
Recommended tightening torque 1.2 Nm.
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: Output voltage >20.5V
Yellow LED: Overload; output voltage < 20.5V
("constant current" mode only)
Red LED: Latching shutdown
("shutdown" mode only)
or remote OFF by means of the
optional 6EP1961-3BA10 module
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
UL/cUL (UL 508 / CSA 22.2) , FILE E197259
English
out
SITOP modular 20/40