Parker AC15 Series, Руководство по установке оборудования

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DOC-0017-03-EN: AC15 Series - Hardware Installation Manual
96 (125) DOC-0017-03-EN-B 04.04.2023
2. Additive Emissions
Emissions from individual components tend to be additive. To reduce the emissions:
- The equipment must be mounted in a metal cubicle. Refer to ‘Radiated & Conducted
Emissions: Compliance Overview’ section above.
- The cubicle should be as free of openings as is practical. Vent systems suitable for EMC
applications are available from cubicle vendors and should be used.
3. Radiated Magnetic & Electric Fields
Radiated magnetic and electric fields inside the cubicle will be high and any components fitted
inside must be sufficiently immune:
- All cable entry and exits (power, control, and communication) should use screened cable
- Earth screen at both ends connecting to the motor frame and cubicle.
- Use of screened/armored cable between VSD/cubicle and motor containing the motor
protective earth (PE) connection is most important. If shielded cable is not available, lay
unshielded motor cables in a metal conduit which will act as a shield. The conduit must be
continuous with a direct electrical contact to the VSD and motor housing. If links are
necessary, use braid with a minimum cross-sectional area of 10mm
2 (8 AWG).
- Use 360° screen terminations:
4. Installations in Hazardous Areas
Some installations in hazardous areas may preclude direct earthing at both ends of the screen. In
this case earth one end of the screen cable via a 1
µ F 50Vac capacitor, and the other as normal:
- Keep unshielded cable as short as possible inside the cubicle.
- Always maintain the integrity of the shield. If the cable is interrupted to insert contactors
etc., re-connect the screen using the shortest possible route. Some motor gland boxes and
conduit glands are made of plastic. If this is the case, then braid must be connected
between the screen and the chassis. In addition, at the motor end, ensure that the screen
is electrically connected to the motor frame since some terminal boxes are insulated from
the frame by gasket/paint.
- Keep the length of screen stripped-back as short as possible when making screen
connections.