Commander S100 User Guide
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3 Mechanical installation
This chapter describes how the drive is intended to be installed in an enclosure. Key features of this chapter include:
•
Planning the installation
•
Enclosure sizing and layout
•
Drive dimensions
•
Routine maintenance
During installation it is recommended that the vents on the drive are covered to prevent debris (e.g. wire off-cuts) from entering the drive.
3.1 Planning the installation
The following considerations outlined in this section must be made when planning the installation.
3.1.1 Access
Access must be restricted to authorized personnel only. Safety regulations which apply at the place of use must be complied with.
3.1.2 Environmental protection
The drive must be protected from:
•
Moisture, including dripping water, spraying water and condensation. An anti-condensation heater may be required, which must be switched off
when the drive is running
•
Contamination with electrically conductive material
•
Contamination with any form of dust which may restrict the fan, or impair airflow over internal components
•
Temperature beyond the specified operating and storage ranges
•
Corrosive gasses
•
Excessive vibration
3.1.3 Hazardous areas
The drive must not be located in a classified hazardous area unless it is installed in an approved enclosure and the installation is certified.
3.1.4 Cooling
The heat produced by the drive must be removed without its specified operating temperature being exceeded. Note that a sealed enclosure gives
substantially reduced cooling compared with a ventilated one, and may need to be larger and/or use internal air circulating fans.
For further information, refer to section 3.3.1
3.1.5 Fire protection
The drive enclosure is not classified as a fire enclosure. A separate fire enclosure must be provided.
For installation in the USA, a NEMA 12 enclosure is suitable.
For installation outside the USA, the following (based on IEC 62109-1, standard for PV inverters) is recommended:
Enclosure can be metal and/or polymeric. Polymer enclosures must meet at least UL 94 class 5VB at the point of minimum thickness.
Air filter assemblies to be at least class V-2.
Unless mounting in an enclosed electrical operating area (restricted access) with concrete floor, the area outlined in Figure 3-1 (the bottom and sides
of the enclosure within 5° marked
) must be designed to prevent escape of burning material - either by having no openings or by having a baffle
construction.
Figure 3-1 Fire enclosure bottom layout
Openings for cables etc. must be sealed with materials meeting the 5VB requirement, or else have a baffle above. See Figure 3-2 for acceptable
baffle construction. The distance below the drive where this applies to the enclosure wall = Distance from the cabinet wall to the drive
÷
0.0875.
NOTE
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