Requirements For Installation; Mechanical Mounting; Safety Requirements Of Mechanical Installation; Mounting Requirements - Danfoss VLT AHF 005 Design Manual

Requirements for Installati...

4 Requirements for Installation

4.1 Mechanical Mounting

4.1.1 Safety Requirements of Mechanical
Installation
4 4
NOTICE
Observe the filter weight and ensure that proper lifting
equipment is used.
NOTICE
When installing the filter, use the lifting eyes on both
sides to lift the filter.

4.1.2 Mounting Requirements

The filters are available in IP00 and IP20. During instal-
lation, follow the described recommendations for both IP
ratings.
•
Mount all filters vertically with the terminals at
the bottom.
•
Do not mount the filter close to other heating
elements or heat-sensitive material (such as
wood).
IP00
•
The surface temperature of the IP00 filters can
exceed 70 °C (158 °F), and a hot surface warning
label is placed on the filter.
•
To cool IP00 filters, use separate fans.
•
Observe ventilation and cooling requirements.
•
Ensure that the required airflow passes through
the filter and not only the cabinet, see
chapter 4.1.4 Ventilation and Cooling Requirements
and chapter 4.2.3 Overtemperature Protection.
IP20
•
Top and bottom clearances are minimum 150 mm
(5.91 in).
•
The surface temperature of the IP20 filters does
not exceed 70 °C (158 °F).
•
The filter can be mounted side by side with the
frequency converter, and there is no spacing
requirement between them.
20
®
VLT Advanced Harmonic Filter AHF 005/AHF 010
4.1.3 Recommendations for Installation in
To avoid high frequency noise coupling, keep a minimum
distance of 150 mm (5.91 in) to:
•
•
•
To obtain low impedance HF connections, grounding,
shielding, and other metallic connections (for example
mounting plates and mounted units) should have a surface
as large as possible to metallic ground. Use grounding and
potential equalization wires with a cross-section as wide as
possible (minimum 10 mm
tapes. Use copper or tinned copper shielded wires only, as
steel shielded wires are not suitable for high frequency
applications. Connect the shield with metal clamps or
metal glands to the equalization bars or PE connections.
Always equip inductive switching units such as relay and
magnetic contactor with varistors, RC circuits, or suppressor
diodes.

4.1.4 Ventilation and Cooling Requirements

The compact design of the filters is based on forced
cooling, and the filters are cooled by circulating air.
Therefore, ensure that air can circulate freely above and
below the filter.
IP20 filters are cooled by built-in fans, and they have
ventilation channels in the enclosure. The fans and
ventilation channels provide the required airflow to
prevent the filters from overheating.
IP00 filters are cooled by forced air supplied by separate
fans. The fans are not part of the delivery. It is the respon-
sibility of the installer to provide and install the fans. To
avoid false airflow, it is sometimes also necessary to install
air baffles to control the airflow.
Danfoss A/S © 10/2016 All rights reserved.
Industrial Enclosures
Mains supply wires.
Motor wires of frequency converter.
Control wires and signal wires (voltage range
<48 V).
2 (8 AWG)) or thick grounding
MG80C502