Grounding Switch; Figure 3-9 Switchgear Of The Drive - ABB ACS1000i User Manual

3.4.6. Grounding switch

The grounding switch is a safety device that enables safe access to the medium voltage
compartments of the drive.
The drive is equipped with one of the following switchgear:
– Grounding switch (1 in Fig. 3–9)
– Combined input disconnector and grounding switch (2 in Fig. 3–9)
The input disconnector and the grounding switch are mechanically coupled and operated
with a single lever.
1
2
Figure 3–9 Switchgear of the drive
1) Grounding switch
The switch is electro-mechanically interlocked with a discharge monitoring circuit that
prevents turning of the switch while the DC-link capacitors are still charged. When the drive
is grounded, the DC link of the drive is connected to the PE ground busbar.
PRODUCT
ACS1000i
DOCUMENT KIND
User manual
POWER ELECTRONICS AND CABINET FEATURES
2) Combined input disconnector and
grounding switch
DOCUMENT ID.
3BHS206977 E01
REV. LANG. PAGE
J en 30/146