ABB ACS880-34 User Manual

Installation instructions 89
Note:
• Because the EMC filter has been disconnected, ABB does not guarantee the EMC
category C2.
• ABB does not guarantee the functioning of the ground leakage detector built inside the
drive.
• In large systems the residual current device can trip without a real reason.
 Identifying different types of electrical power systems
To identify the electrical power system type, find out the supply transformer connection. If
that is not possible, measure these voltages at the distribution board before you connect
power to the drive:
1. input voltage line to line (U
L-L
)
2. input voltage line 1 to ground (U
L1-G
)
3. input voltage line 2 to ground (U
L2-G
)
4. input voltage line 3 to ground (U
L3-G
).
The line-to-ground voltages in relation to the line-to-line voltage of the electrical power
system types are shown below.
3AXD10000681917
U
L-L
U
L1-G
U
L2-G
U
L3-G
Electrical power system type
X 0.58·X 0.58·X 0.58·X Symmetrically grounded TN system (TN-S
system)
X 1.0·X 1.0·X 0 Corner-grounded delta system
(nonsymmetrical)
X 0.5·X 0.5·X 0.57·X Midpoint-grounded delta system
(nonsymmetrical)
X Varying level
versus time
Varying level
versus time
Varying level
versus time
IT systems (ungrounded or high-resistance-
grounded [>30 ohms]) nonsymmetrical
Drive
N
L3
L2
L1

ABB ACS880-34 Specifications

General

Brand	ABB
Model	ACS880-34
Category	DC Drives
Language	English