ABB ACS800-67LC, Hardware Manual

Page: 53 / 154

Planning the electrical installation 53
5
Planning the electrical
installation
What this chapter contains
This chapter contains the instructions that you must follow when selecting the generator,
cables, protections, cable routing and way of operation for the converter system.
Note: The installation must always be designed and made according to applicable local
laws and regulations. ABB does not assume any liability whatsoever for any installation
which breaches the local laws and/or other regulations. Furthermore, if the
recommendations given by ABB are not followed, the converter may experience problems
that the warranty does not cover.
Selecting the grid-side disconnecting device
(disconnecting means)
The converter must always be equipped with a grid-side disconnecting device which can
be locked to the open position for installation and maintenance work. If the converter is
equipped with the 400 mm wide incoming cubicle (C111), or power cabinet (option
+C108 or +C109) it is equipped with the disconnecting device automatically. For the other
units, the device must be selected, acquired and installed by the customer.
The disconnecting device does not, however, isolate the L1, L2 and L3 busbars from the
power supply network. Therefore during installation and maintenance work on the
converter, the converter must be isolated from the power supply network with a
disconnector at the distribution board or at the line-coupling transformer. Apply temporary
grounding before working on the unit.