Cabinet Design An Connection System - Siemens 6SE7087-8KN50 Instructions De Service

08.2008
11.1.6

Cabinet design an connection system

Siemens AG 6SE7087-7KN50
SIMOVERT MASTERDRIVES
♦ Components not mounted on the heat sink, e.g. the electronic
devices and the DC link capacitors, are cooled by the heat
exchangers at the heat sink fins.
When a chassis unit is installed in a cubicle, make sure that the air
discharged by the fan can enter the inside of the chassis. For this
reason, there must be a clearance of at least 130 mm between top
of chassis and cubicle roof (or existing cover) for applications with
degrees of protection > IP42.
The compartmentalizations to be fitted to units with air-cooling are
counterproductive here! They must not be fitted.
♦ The units require no external cooling air.
It must nevertheless be kept in mind that additional heat losses of
other components in the cubicle, such as reactors, cannot be
extracted!
♦ The temperature of the cooling air circulating inside the chassis is
monitored with a sensor.
♦ If an application with degree of protection IP54 is set up, it is
necessary to close the gaps between the chassis side walls and the
cubicle walls.
♦ In cubicle systems, partition walls up to the top cover plate are to be
fitted between the units.
♦ If the units are operated with degree of protection IP54, the air
temperature inside the units during rated operation is distinctly
higher than the water supply temperature.
♦ One-inch internal threads are provided for the water connection.
The connection nipples must be of stainless steel or heavy gauge
aluminium. Ideally, flat seals should be used.
♦ If the connectors supplied with the units are used, they should be
sealed with Loctite 542.
♦ The "Goldschlange" (gold snake) hose made by Paguag is
recommended.
♦ For the joint, use is made of an NW25 screw-type sleeve for
"Goldschlange" hose with inside piece of V2A and a double nipple of
V2A.
♦ Cooling water supply (blue) and return (red) are to be connected in
accordance with the colour coding, which is to be found next to the
1-inch water connection beneath the heat sink.
Operating Instructions
Technical Data
11-21