CIRCUTOR EMF-EMB Series - Manual (Page 6)

----- Static switching modules EM ---------- M98116701-20 Pág: 5
b) Minimum clearances for cooling
Figure 1.- Dimensions and mounting distances
• As a thumb rule, the cabinet cooling system should provide approximately an air flow of
6 m3/h for each kW of total losses (including all the elements into the cabinet, fuses, lamps,
switchgears, coils, etc.)
• The EM modules must be placed in the upright position with the heatsink channels oriented
in the vertical sense. The top and bottom parts of the heatsink must be kept free for air
circulation
• Avoid mounting the EM modules close to hot components or devices emitting heat. The
maximum ambient temperature inside the cabinet should be kept below 45 ºC.
4 WIRING INSTRUCTIONS FOR EQUIPMENT BASED ON MODULES EM.
When building static power factor compensation equipment, based on the EM modules, the
following wiring instructions must be followed:
• For this application the three phase EMF or EMB modules must be used together with three
single phase capacitors or a three phase capacitor with 6 terminals (internally built as three
single phase caps.). The connection of each EM module to the corresponding step of
capacitors must be as shown in figure 2.