Page 185 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
Internal electronic accessories

1 - Rating Plug

The Rating Plug, supplied with the trip unit establishes the rated current In required by the measuring range
and for setting the current protections (with reference to In).
It is installed on a dedicated front connector which can be accessed by the user.
The trip unit continuously checks for the presence of the Rating Plug and signals its absence or any assembly
or installation errors.
If a new model is installed, the Trip unit displays the request for installation when first powered.
In Ekip Touch, field Nom.Curr in the About-Circuit breaker menu displays the In quantity read by the unit.

Versions Various models of different sizes are available and can be ordered in three versions: a classic version, a
version which activates Rc protection and one that deactivates L protection; the three versions have different
labels:

Figure 121
IMPORTANT: the Rating plug labels have a black background; if the colour is different,
they may be incompatible with the trip units described in this document: consult
ABB for assistance

Replacement The module can be replaced by the user; any Rating Plug with maximum rated current equal to the nominal
size of the CB (Iu) can be installed.
WARNING!
• with Iu ≤ 400 A size circuit-breakers, Rating Plugs from 100 A to the Iu size of the CB
can be installed
• with Iu > 400 A size circuit-breakers, Rating Plugs from 400 A to the Iu size of the CB
can be installed
Further details about assembly and the Rating Plug installation procedure are available in ABB Library,
particularly in document 1SDH001000r0510.
IMPORTANT: to avoid alarms or undesired trips, the Rating Plug must be replaced
when Trip unit is off, the CB open and in the absence of primary currents and
voltages

183 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Internal electronic accessories | 1 - Rating Plug