Arc Resistant Design; Internal Arc Classification (Iac); Fig. 88. Iac Label Example; Table 11 Abb Arc Resistant Classes - ABB ACS5000 User Manual

8.10. Arc resistant design

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 11 indicate the type of arc proofing that a drive uses.
Depending on the drive configuration, classes I and IV are available for an ACS5000W gen. 2.
For information on the arc resistant design class of your drive, see the project-specific
"Converter Data Sheet" ("Appendix B – Technical data" of the ACS5000W gen. 2 user manual).

TABLE 11 ABB arc resistant classes

ABB class Description
Class I
Protection based on arc prevention (NOT certified according to
Protection based on arc resistant cabinet structure, IAC certified by 3rd body
Class II
according to IEC 62477-2
Protection based on external arc fault limitation and elimination. HV fuses are
Class III applied externally to limit the arc fault current, IAC certified by 3rd body according to
IEC 62477-2
Class IV Fast arc detection and elimination, IAC certified by 3rd body according to IEC 62477-2

8.10.1. Internal arc classification (IAC)

The arc fault rating, which is based on arc fault tests, is on the label underneath the drive rating
plate.
Internal Arc Classification (IAC)
ABB Class IV
IAC F
IEC 62477-2 2b
Distance [m] 0.3

Fig. 88. IAC label example

IMPORTANT! The Main Circuit Breaker (MCB) for the drive fulfills the APR (Associated
Protection Requirement) without the need for additional devices. The MCB requirements are
described in Section 2.4, "Main circuit breaker protection device", page 28.
Based on the ACS5000W gen. 2 IAC rating, the minimum approach distance is 0.3 m. Local rules
may require additional distance. The user is responsible to determine the correct approach
distance considering local rules.
PRODUCT
ACS5000W gen. 2
L R T
2b 2b 1
0.3 0.3 -
DOCUMENT KIND
User manual
B I t APR
A A
1 19 kA 0.5 s Yes
-
3BHB049908R5419
DOCUMENT ID.
3BHS799208 E01
OPERATION
IEC 62477-2
)
SC
No
REV. LANG. PAGE
J en 135/186