NB!
Please see the
Duct Kit Instruction Manual, 175R5640,
for further information
External ducts
If additional duct work is added externally to the Rittal cabinet the pressure drop in the ducting must be calculated. Please see section
Cooling and
Airflow
for further information.
3.4.2 Outside Installation/ NEMA 3R Kit for Rittal Enclosures
This section is for the installation of NEMA 3R kits available for the frequency converter frames D3 and D4 . These kits are designed and tested to be
used with IP00/ Chassis versions of these frames in Rittal TS8 NEMA 3R or NEMA 4 enclosures. The NEMA-3R enclosure is an outdoor enclosure that
provides a degree of protection against rain and ice. The NEMA-4 enclosure is an outdoor enclosure that provides a greater degree of protection against
weather and hosed water.
The minimum enclosure depth is 500 mm (600 mm for E2 frame) and the kit is designed for a 600 mm (800 mm for E2 frame) wide enclosure. Other
enclosure widths are possible, however additional Rittal hardware is required. The maximum depth and width are as required by the installation.
NB!
The current rating of drives in D3 and D4 frames are de-rated by 3%, when adding the NEMA 3R kit. Drives in E2 frames require no
derating
NB!
A doorfan(s) is required on the enclosure to remove the heat losses not contained in the backchannel of the drive and any additional
losses generated from other components installed inside the enclosure. The total required air flow must be calculated so that the
appropriate fans can be selected. Some enclosure manufacturers offer software for performing the calculations (i.e. Rittal Therm
software). If the drive is the only heat generating component in the enclosure, the minimum airflow required at an ambient temperature
of 45
o
C for the D3 and D4 drives is 391 m
3
/h (230 cfm).
Ordering information
Frame size D3: 176F4600
Frame size D4: 176F4601
Frame size E2: 176F1852
NB!
Please see the instructions
175R5922
for further information
ADAP-KOOL
®
Drive AKD 102 High Power 3 Mechanical Installation
MG.11.O1.02 - ADAP-KOOL
®
is a registered Danfoss trademark
29
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