Danfoss TGH285, Руководство по применению и установке

Страница: 48 / 136

• • • DANGER! • • •
The full-load current rating is based on the installation of a line reactor in the power line. Refer to the Spare Parts Selection Guide for
specifications. Failure to use a line reactor will result in poor power factor and higher full-load current.
NOTE
Fuse selection must be done using the FLA of the affected compressor to the next highest amp, but in any event should be a minimum of
FLA x 1.25. Fast acting fuses must be installed as close as possible and immediately before the compressor; that is downstream from the
line reactor. (Contact Danfoss LLC for more information).
6.7 Power Line Contactor
The power line contactor is optional. Consult local safety regulations to determine if a contactor is necessary for your
application.
6.8 CE Compliance and EMI/EMC Filtering
To address EMI/EMC problems, Danfoss LLC recommends the installation of a UL-approved Electromagnetic
Interference/Electromagnetic Compatibility (EMI/EMC) filter device on the input power line. Refer to the Spare Parts
Selection Guide for details.
Although all Turbocor compressors are Conformance European (CE) listed, the compliance of the compressor with
the EMC directive depends on the use of the CE EMI/EMC filter provided by Danfoss LLC. If this is not possible
because of the nature of your application and/or installation, an alternative component with the same attenuation
characteristics must be used to maintain compliance with the EMC Directive. It is the responsibility of the user to
maintain compliance with the Directives. Contact a Danfoss LLC sales representative for more details.
Proper installation of the EMI/EMC filter can have a dramatic effect on overall performance. Although the filter
reduces electrical noise on the power lines (conducted emissions), it should be located as close as possible to the
compressor to reduce broadcasting of the noise (radiated emissions) from the power lines themselves. The
capacitors within the filter short the noise to ground so it is imperative that the filter maintains a good ground. A
short, heavy, stranded conductor from the filter chassis to the main ground bus is recommended for top
performance. A battery braid, litz wire, or flexible welding cable with many fine strands, is recommended for best
grounding performance. The multiple- strand cabling provides more surface area in order to conduct the high
frequencies that are on the grounding cable.
Radiation of noise is also a concern for power line routing as it can effectively bypass the filter. Input and output
filter leads should be separated by a maximum practical distance within enclosures and should be routed separately
in interconnecting conduits when used.
Page 48 of 136 - M-AP-001-EN Rev. S 9/8/2021