ABB ACS1000i air-cooled, User Manual

Page: 55 / 174

03 POWER ELECTRONICS AND CABINET FEATURES
3BHS206977 E01 REV H ACS1000I AIR-COOLED USER MANUAL 55/174
3.7 Arc resistant design (optional)
The optional “Arc Resistant Design” provides the drive with arc fault protection in accordance
with IEC 62477-2.
The ABB arc resistant classes in Table 3-2 indicate the type of arc proofing that a drive has.
Depending on the drive configuration, classes I, II and III are available for an ACS1000i.
Table 3-2: ABB arc resistant classes
3.7.1 Internal arc classification
The arc fault rating, which is based on arc fault tests, is on the IAC label below the drive rating
plate of the drive.
Figure 3-24: IAC label example
3.7.2 Power compartment doors
As part of the arc resistant design of the drive, the doors of the power compartments must be
secured with bolts and washers, which are in a bag (Fig. 3-25) in the loose parts box. The drive
frame has captive nuts for the bolts.
Figure 3-25: Door bolts
For information on the arc resistant design class of your drive, see the project-
specific “Converter Data Sheet” (Appendix B of the ACS1000i user manual).
ABB class Description
Class I Protection based on arc prevention (NOT certified according to IEC 62477-2)
Class II
Protection based on arc resistant cabinet structure
(1)
(1) IAC certified by 3rd body according to IEC 62477-2
Class III Protection based on external arc fault limitation and elimination. HV fuses
are applied externally to limit the arc fault current
(1)
Class IV
Fast arc detection and elimination
(1)
IAC
IEC 62477-2
3BHB049908R1220
F L R T B APR SC I
ඉ
t
ඉ
2b
0.3 0.3 0.3 - -
2b 2b 1 1 20 kA 0.1 s Yes No
Distance [m]
Internal Arc Classification (IAC)
ABB Class II