Arc Resistant Design; Internal Arc Classification (Iac); Figure 8-2 Iac Label Example; Table 8-1 Abb Arc Resistant Classes - ABB ACS5000 User Manual

8.10. Arc resistant design

The arc resistant design provides the drive with ABB class IV arc fault protection
(see Table 8-1) in accordance with IEC 62477-2.

Table 8-1 ABB arc resistant classes

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
Class III Protection based on external arc fault limitation and elimination. HV fuses
are applied externally to limit the arc fault current
Class IV
Fast arc detection and elimination
(1)
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

Figure 8-2 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 "2.7 Important note - main circuit breaker"
on page 29.
Based on the ACS5000W 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
)
L R T B
2b 2b 1 1
0.3 0.3 - -
DOCUMENT KIND
User manual
(1)
I t APR SC
A A
9.5 kA 0.5 s Yes No
3BHB049908R5409
DOCUMENT ID.
3BHS799208 E01
OPERATION
(1)
(1)
REV. LANG. PAGE
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