YASKAWA Z1000 - Page 37

Table i.18 Asymmetrical Grounded Network
Characteristics Diagram
Grounded at the corner of the delta
L1
L2
L3
Grounded at the middle of the side
L1
L2L3
Single-phase, grounded at the end point
L1
N
Three-phase variable transformer without solidly grounded neutral
L1
L2
L3
L1
L2
L3
If EMC is a concern and the network is grounded symmetrically, install the SW1 and SW2 screws to the ON position. Installing
the SW1 and SW2 screws enables the internal EMC filter (Drives are shipped with SW1/SW2 screws installed at the OFF
position).
L1
L2
L3
Figure i.30 Symmetrical Grounded Network
n
EMC Filter Switch Location
C
B
A
B
A – SW1 (ON)
B – Screw (OFF)
C – SW2 (ON)
Figure i.31 EMC Filter Switch Location (2A0011 to 2A0059, 4A0005 to 4A0040, and 4A0052ooB)
i.4 Electrical Installation
YASKAWA ELECTRIC TOEP C710616 54A YASKAWA AC Drive - Z1000 Quick Start Guide
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