Zakład Wytwórczy Aparatów Elektrycznych Sp. z o.o.
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4. INSTALLATION AND ADJUSTMENT
Persons performing switching activities should have adequate professional qualifications and experience in
servicing high-voltage equipment. During moving the disconnector or its earthing switch (if equipped), the
safety regulations must be obeyed at the installation site
Before switching (closing or opening) of the disconnector or its earthing switch, one should ensure that the
switching is permissible, taking into account the conditions indicated above and the arrangement conditions
of the switchgear.
In the closed position of the disconnector, earthing switch, the lever of the operating mechanism should be
directed upwards. The actuating lever for the operating mechanism (in the case of a sliding operating mecha-
nism) must be turned downwards by 180 ° until it stops, causing the disconnector to open. When closing, the
course of action is similar, except that the lever movement takes place in the opposite direction.
4.1. Preparation of the supporting structure and assembly ot the disconnector
ONIIIS disconnectors are intended for operation in horizontal and vertical positions, with movable contacts at
the top. The design of the supporting structure should take into account keeping the appropriate insulation
level to earth, and the construction itself should have adequate stiffness.
The base frame of the disconnector should be pre-screwed in three places (with three M16 bolts), and then
optionally washers should be placed under the base frame to align the plane of the supporting structure. The
contact points between the support structure and the disconnector's base frame should lie in one plane (pos.2).
1
2
1.
Elements of the supporting structure
2.
The plane in which contact points of the
supporting structure should be located.
Figure 9 Installation of the disconnector to
the supporting structure.
