8 ZX2 GAS-INSULATED MEDIUM VOLTAGE SWITCHGEAR
Fundamental notes on this manual:
Read the relevant sections of this manual through in full before performing work, so as to ensure
correct handling.
Paragraphs in this manual are marked in accordance with their significance. The markings mean the
following:
Note on safety
The internal arc classification IAC to IEC 62271-200 confirms a tested degree of operator protection. The information on
accessibility of the switchgear as required by IEC 62271-200 can be found on the type plates of the panels. The coding is
as follows (exemplary):
IAC AFLR 31.5 kA 1 sec
Duration of fault current
Level of fault current
Successfully tested accessibility of the area behind the switchgear (R - rear)
Successfully tested accessibility of the area to the side of the switchgear (L - lateral)
Successfully tested accessibility of the area in front of the switchgear (F- front)
Switchgear installed in closed rooms with access restricted to authorized personnel
Internal arc classification
Hazard warning
meaning in this manual that death, injuries
and considerable damage may occur if the
actions described are not performed.
Important note
meaning in this manual that damage may occur if the
actions described are not performed.
Hazard warning
Wear appropriate work clothes and protective gloves during the installation work to avoid injuries particularly
at sharp-edged sheet metal parts of the switchgear.
The operator of the switchgear must prevent access by personnel to non-arc classified areas, for instance by
issuing instructions.
Within the ratings stated on the type plate, the switchgear is safe for operating personnel in accordance with
Commissioning, servicing and extension work require special attention with regard to safety (see also
With pressure relief into the switchgear room, the IAC qualification requires a switchgear installation
consisting of at least four panels. If a plenum leading to the outside is used, at least two panels are required for
the IAC qualification. With a pressure relief into the switchgearroom to the top, at least two panels with a
width of 31.5 in are required for the IAC qualification.
Use only chlorine-free cleansers for cleaning of the switchgear.
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