Installation Of Top And Bottom Covers; Outside Installation /Nema 3R Kit Of Industrial Enclosures; Installation Of Ip00 To Ip20 Kits; Installation Of Cable Clamp Bracket In Open Chassis Drives - GE AF-600 FP Design And Installation Manual

Installation

2.4.2 Installation of Top and Bottom Covers

Top and bottom covers can be installed on unit sizes 43,
44 and 52. These kits are designed to be used to direct the
backchannel airflow in and out the back of the drive as
opposed to in the bottom and out the top of the drive
(when the drives are being mounted directly on a wall or
inside a welded enclosure).
Notes:
1. If external duct work is added to the exhaust
path of the drive, additional back pressure will be
created that will reduce the cooling of the drive.
The drive must be derated to accommodate the
reduced cooling. First, the pressure drop must be
calculated, then refer to the derating tables
located earlier in this section.
2. A door fan 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 adjustable frequency drive is the only heat
generating component in the enclosure, the
minimum airflow required at an ambient
temperature of 113°F [45°C] for the unit sizes 43,
44 and 52 drives is 230 cfm (391 m
minimum airflow required at an ambient
temperature of 113°F [45°C] for the 52 unit size
drive is 460 cfm (782 m
Ordering information
Unit size 43 and 44: OPCDUCT4344TB
Unit size 52: OPCDUCT52TB
2.4.3 Outside Installation /NEMA 3R Kit of
Industrial Enclosures
The kits are available for the unit sizes 43, 44 and 52.
These kits are designed and tested to be used with IP00/
Chassis drives in welded box construction enclosures with
an environmental rating of NEMA-3R or NEMA-4. The
NEMA-3R enclosure is a dust-tight, rain-tight, ice-resistant,
outdoor enclosure. The NEMA-4 enclosure is a dust-tight
and water-tight enclosure.
This kit has been tested and complies with UL environ-
mental rating Type-3R.
AF-600 FP Design and Installation Guide
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DET-768A
Note: The current rating of 43 and 44 unit size drives are
de-rated by 3% when installed in a NEMA- 3R enclosure.
52 unit size drives require no de-rating when installed in a
NEMA-3R enclosure.
Ordering information
Unit size 43: OPCDUCT433R
Unit size 44: OPCDUCT443R
Unit size 52: OPCDUCT523R

2.4.4 Installation of IP00 to IP20 Kits

The kits can be installed on unit sizes 43, 44, and 52 (IP00).
Ordering information
Unit size 43/44: Please consult GE
Unit size 52: Please consult GE
2.4.5 Installation of cable clamp bracket in
open chassis drives.
The motor cable clamp brackets can be installed on open
chassis drives in unit sizes 43, 44, and 52.
Ordering information
Unit size 43: Please consult GE
Unit size 44: Please consult GE
Unit size 52: Please consult GE

2.4.6 Installation on Pedestal

This section describes the installation of a pedestal unit
available for the adjustable frequency drives Unit Sizes 41
and 42. This is an 8 in [200 mm] high pedestal that allows
these units to be floor mounted. The front of the pedestal
has openings for input air to the power components.
The adjustable frequency drive connector plate must be
installed to provide adequate cooling air to the control
components of the adjustable frequency drive via the door
fan and to maintain the IP21/NEMA 1 or IP54/NEMA 12
degrees of Unit protections.
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