ABB FOCH, Hardware Manual, Page: 20 / 38

Enclosed (IP22) filters
1
50 mm
(1.97 in.)
50 mm
(1.97 in.)
FOCH0320-52
1
50 mm
(1.97 in.)
50 mm
(1.97 in.)
FOCH0320-72
Space for cabling 1
￭
Clearance
Non-enclosed (IP00) filters
• The distance between the enclosure and the filter coil must be at least 15 mm
(0.59 in.).
• The distance between the enclosure and the input/output terminals must be at
least 15 mm (0.59 in.).
• The distance between the input busbars (if in use instead of cabling) and the filter
coil must be at least 15 mm (0.59 in.).
Enclosed (IP22) filters
The distance between the input/output cabling and the filter coil must be at least 50
mm (1.97 in.).
￭
Cooling
The filters are designed to cool by natural convection. Ensure that there is enough
fresh cooling air available and that the hot air can freely escape from the filter enclosure
or cubicle. The air space above the non-enclosed (IP00) filter and the outlet air of the
enclosed (IP22) filter is hot [up to 70 °C (158 °F) depending on the installation and
operating conditions]. Take this into account in the installation.
20 Installation
4