Eaton DS7 - Increased Cooling

3 Installation
3.3 Flush mounting in control panel
DS7 Soft starter 09/16 MN03901001Z-EN www.eaton.com 63
3.3.1 Increased cooling
Cooling air circulation on the DS7 soft starter can be improved by using an
optional DS7-FAN-… device fan
This makes the following possible:
• Operation at higher ambient air temperatures
• A compact setup and directly combining the unit with other components
• A higher number of starts per hour
The choice of device fan is based on the rated operational current (yyy) for
the corresponding size.
Table 11: Device fans for the various rated operational currents
￫
The supplied cooling air must have a temperature between
-5 and +40 °C. A derating is required for higher temperatures
(upto +60.maximum):
• 2 percent of the rated operational current I
e
per Kelvin (K)
temperature rise from +40 °C
• 1 percent of rated operational current I
e
per kelvin (K) of
temperature rise
after +40 °C with device fan (DS7-FAN-…)
￫
DS7-FAN-… device fans are temperature-controlled, always run
during ramp times (t-Start, t-Stop), and will continue running
until the heat sink cools down again. The fan is then
automatically switched off.
￫
It is advisable to install device fan DS7-FAN-… before installing
soft starter DS7 in the basic device.
This helps prevent additional steps for removal and changes in
the installation.
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DANGER
The device fan must only be mounted in a de-energized state.
Rated operational current (yyy) Construction
size
Device fan (type) Arrangement
004 - 012 BG1 DS7-FAN-032 Flush mounting
016 - 032
BG2 DS7-FAN-032 Flush mounting
041 - 100
BG3 DS7-FAN-100 Substructure
135 - 200
BG4 DS7-FAN-200 Substructure
￫
For technical data for DS7-FAN… device fans, refer to
￫ Section 9.5.4, “Device fans”, page 227 and page 232.