Cassette Style AC-DC Converters H Series
Edition 1/04.2002 1/20
70 Watt AC-DC Converters H Series
• Universal input voltage range suitable for most AC
mains
• Efficient input filter and built-in surge and transient
suppression circuitry
• Outputs individually isolated
• Outputs fully protected against overload
Table of Contents Page
Summary .......................................................................... 1
Type Survey and Key Data .............................................. 2
Type Key .......................................................................... 2
Functional Description...................................................... 3
Electrical Input Data ......................................................... 4
Electrical Output Data ...................................................... 5
Auxiliary Functions ........................................................... 8
Summary
The H series of AC-DC converters represents a flexible
range of power supplies for use in advanced electronic sys-
tems. Features include high efficiency, reliability and low
output voltage noise.
The converter inputs are protected against surges and tran-
sients occuring at the source lines. An input over- and
undervoltage lock-out circuitry disables the outputs if the
input voltage is outside the specified range. The modules
include an inrush current limitation preventing circuit break-
ers and fuses from being damaged at switch-on.
All outputs are open- and short-circuit proof and are pro-
tected against overvoltages by means of built-in suppressor
diodes. The outputs can be inhibited by a logic signal ap-
plied to the connector pin 2 (i). If the inhibit function is not
used pin 2 should be connected to pin 23 to enable the out-
puts.
LED indicators display the status of the converter and allow
visual monitoring of the system at any time.
Full input to output, input to case, output to case and output
to output isolation is provided. The modules are designed
and built according to the international safety standard IEC/
EN 60950 and have been approved by the safety agencies
LGA (Germany) and UL (USA). The UL Mark for Canada
has been officially recognized by regulatory authorities in
provinces across Canada.
The case design allows operation at nominal load up to
50°C in a free air ambient temperature. If forced cooling is
provided, the ambient temperature may exceed 50°C but
the case temperature should remain below 80°C under all
conditions. Applying a derating factor, operation above
50°C with reduced output power is possible.
A temperature sensor generates an inhibit signal which
disables the outputs if the case temperature
T
C
exceeds the
limit. The outputs are automatically re-enabled when the
temperature drops below the limit.
Two different options are available to adapt the converters
to individual applications (D, V).
The modules may either be plugged into 19" rack systems
according to DIN 41494, or be chassis mounted.
Important: These products are intended to replace the
110H and the 230H units.
Safety according to IEC/EN 60950
168
6.6"
39
1.54"
8TE
111
4.37"
3U
Page
Electromagnetic Compatibility (EMC) ............................ 10
Immunity to Environmental Conditions........................... 11
Mechanical Data ............................................................ 12
Safety and Installation Instructions ................................ 13
Description of Options.................................................... 16
Accessories .................................................................... 20
Input voltage range 85...255 V AC
1, 2 or 3 isolated outputs up to 48 V DC
Class I equipment
LGA
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