Siemens Model 240 Installation Manual download pdf (Page 41)

Technical data

6.1 Mechanical Data

Power Modules PM240

Hardware Installation Manual, 2006-04-04, A5E00807525B AA

6-3

Atmospheric pollution

Do not install the SINAMICS G120 Power Module in an environment which contains

atmospheric pollutants such as dust and/or corrosive gases.

Water

Take care to site the SINAMICS G120 Power Module away from potential water hazards, for

example, do not install the SINAMICS G120 Power Module beneath pipes that are subject to

condensation. Avoid installing the SINAMICS G120 Power Module where excessive humidity

and condensation may occur.

Installation and cooling

Caution

The SINAMICS G120 Power Module MUST NOT be mounted horizontally.

When mounting SINAMICS G120 Power Modules one above the other, the specified

environmental conditions and clearance must not be exceeded (see Dimension Drawings)

Independent of this, the minimum distance above and below the SINAMICS G120 Power

Modules is 100 mm (3.9 inches).

No equipment that could have a negative effect on the flow of cooling air should be installed

in this area. Make sure that the cooling vents in the SINAMICS G120 Power Module are

positioned correctly to allow the free movement of air.

Make sure that there is an adequate airflow through the cubicle as follows:

1. Using the formula below, calculate the airflow required:

Airflow (m

/hr) = (Dissipated Watts / ΔT) x 3.1

2. If necessary, install cubicle cooling fans.

Note

Dissipation (Watts) = 3 % to 5 % of the SINAMICS G120 Power Module rating.

ΔT = Allowable temperature rise within the cubicle in °C.

3.1 = Specific heat of air at sea level.

Frame

Size

A B C

Power

Rating

0.37 0.55 0.75 1.1 1.5 2 3 4 5.5 7.5 11

Power

Losses

97 99 102 108 114 139 158 183 240 297 396

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 85 86

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Siemens Model 240 Installation Manual Page 41