Supplies run from traction system inputs
An
Absopulse Electronics product story
Edited by the Engineeringtalk editorial team
Jul 15, 2008
High-input-voltage DC/DC convertors accept 750V DC input voltage typically available in mass transit vehicles such as trams, metros and light rail.
The HVI 300 Series of high-input-voltage DC/DC convertors from Absopulse Electronics accepts a 750V DC input voltage (525-975V DC range), which is the traction voltage typically required for mass transit vehicles such as trams, metros and light rail, and for mining locomotives.
The standard series delivers 12, 24, 36 or 48V DC, with other output voltages available on request.
An optional built-in redundancy diode would allow for a number of units to be connected in parallel to achieve higher output power or N+1 redundancy.
The HVI 300 meets the requirements of EN50155 for electronic equipment used on rolling stock and is filtered to meet EN50121-3-2 EMI/EMC.
Heavy ruggedising and conformal coating provide immunity to shock, vibration, humidity and moisture.
The HVI 300 is designed to meet IEC61373 Categories 1 A and B shock and vibration standards.
It is fan cooled and rated for -25 to +55C for full specification, with wider temperature ranges also available.
The unit features high efficiency, low output noise and full protection on the input and output.
To ensure high reliability and long operating life, all critical components on the primary side are designed and tested for corona inception levels significantly higher than the operating voltages.
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