7.4
7.4.1
7.4.2
7.4.3
potentiometer Un = 0) ........................................................................................................... 136
7.4.4
7.4.5
8
Commissioning ................................................................................................................................... 139
8.1
8.2
9
Accessories ........................................................................................................................................ 145
9.1
Terminal covers .................................................................................................................... 146
9.1.1
Mounting terminal covers ...................................................................................................... 147
9.2
Phase barriers ....................................................................................................................... 148
9.2.1
Mounting phase barriers ....................................................................................................... 149
9.3
Terminal plates ..................................................................................................................... 150
9.3.1
Mounting terminal plates ....................................................................................................... 151
9.4
Mounting spacers .................................................................................................................. 153
9.4.1
Fitting mounting spacers ....................................................................................................... 153
9.5
Bridging bars ......................................................................................................................... 154
9.6
Copper bar connection kit ..................................................................................................... 155
9.7
Autotransformer .................................................................................................................... 157
9.8
9.9
9.10
9.11
9.12
Cover frame (3KC8 only) ...................................................................................................... 162
9.13
Auxiliary switches .................................................................................................................. 163
9.14
Display (3KC8 only) .............................................................................................................. 164
9.15
9.16
9.17
Motor operator ...................................................................................................................... 170
9.18
10
Service and maintenance .................................................................................................................... 177
10.1
Fault rectification ................................................................................................................... 177
10.1.1
10.1.2
10.2
Manual, 08/2017, L1V30368969104A-02
Table of contents
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