Characteristic Data Of Water-Cooled Units, Type K - Siemens simovert masterdrives Betriebsanleitung

Technical Data
♦ If an application with degree of protection IP54 is set up, it is
♦ In cubicle systems, partition walls up to the top cover plate are to be
♦ If the units are operated with degree of protection IP54, the air
♦ One-inch internal threads are provided for the water connection.
♦ If the connectors supplied with the units are used, they should be
♦ The "Goldschlange" (gold snake) hose made by Paguag is
♦ For the joint, use is made of an NW25 screw-type sleeve for
♦ Cooling water supply (blue) and return (red) are to be connected in
11.1.7

Characteristic data of water-cooled units, type K

The tables listed below give the rated water flow volume in l/min and
the pressure difference (in Pa) across the heat sink at rated flow
volume.
The water-cooled units have a lower power loss (i.e. a higher efficiency)
than the air-cooled units. The power loss is given in Table 11-8.
MASTERDRIVES with water-cooling have the same power rating as
Background
the air-cooled units. Since the thermal resistance of the heat sinks for
the IGBT is distinctly better than that attainable with air-cooling, the
modules are operated with a junction temperature that is 20 K lower.
The result of this is that the module losses are about 5 % lower.
This effect also gives the modules a good life expectancy.
Many units are also equipped with small built-in fans. The lower power
losses of these can also be taken into account.
In the tables below, the data for new units or more exact data are
NOTE
printed in bold type.
11-20
necessary to close the gaps between the chassis side walls and the
cubicle walls.
fitted between the units.
temperature inside the units during rated operation is distinctly
higher than the water supply temperature.
The connection nipples must be of stainless steel or heavy gauge
aluminium. Ideally, flat seals should be used.
sealed with Loctite 542.
recommended.
"Goldschlange" hose with inside piece of V2A and a double nipple of
V2A.
accordance with the colour coding, which is to be found next to the
1-inch water connection beneath the heat sink.
Operating Instructions
05.2006
6SE7087-6JK50 Siemens AG
SIMOVERT MASTERDRIVES