Rockwell Automation 23P PowerFlex DC Stand Alone Regulator and Gate Amplifier - Manual (Page 17)

Rockwell Automation Publication 23P-UM001D-EN-P - July 2012 17
Stand Alone Regulator Installation, Wiring and Configuration Chapter 2
Table 2 - Pollution Degree Ratings According to EN 61800-5-1
• The SAR must be installed in a suitable enclosure with at least an IP4X
rating at the top of the enclosure.
• The SAR may produce leakage current in the protective earthing
conductor which exceeds 3.5 mA AC and/or 10 mA DC. The minimum
size of the protective earthing (grounding) conductor used in the
application must comply with local safety regulations for equipment with
high protective earthing conductor current.
• The SAR may not be powered from a “corner-earthed” supply system in
order to maintain compliance with the CE LV Directive.
Installation Requirements Related to EN 61800-3 and the EMC
Directive
• The SAR must be earthed (grounded) as described in this User Manual.
• Output power wiring to the motor (field excitation) must employ cable
with a braided shield providing 75% or greater coverage, or the cable must
be housed in metal conduit, or equivalent shielding must be provided.
Continuous shielding must be provided from the SAR enclosure to the
motor enclosure. Both ends of the motor cable shield (or conduit) must
terminate with a low-impedance connection to earth.
• At the motor end, the motor field excitation cable shield or conduit must
terminate in a shielded connector which must be properly installed in an
earthed motor wiring box attached to the motor. The motor wiring box
cover must be installed and earthed.
• All control (I/O) and signal wiring to the SAR, including gate firing
control, must use cable with a braided or foil shield providing 75% or
greater coverage, or the cables must be housed in metal conduit, or
equivalent shielding must be provided. Only the SAR end of the cable
shield should be terminated with a low impedance connection to earth.
• Power cabling must be separated from control and signal wiring wherever
possible.
Pollution Degree Description
1 No pollution or only dry, non-conductive pollution occurs. The pollution has no
influence.
2 Normally, only non-conductive pollution occurs. Occasionally, however, a
temporary conductivity caused by condensation is to be expected, when the
drive is out of operation.
3 Conductive pollution or dry non-conductive pollution occurs, which becomes
conductive due to condensation, which is to be expected.
4 The pollution generates persistent conductivity caused, for example by
conductive dust or rain or snow.