Non-Abb Du/Dt Filter Selection; What This Chapter Contains; When A Du/Dt Filter Must Be Used; Filter And Installation Requirements - ABB ACS800-04 Hardware Manual

Non-ABB d

What this chapter contains

This chapter contains guidelines for selecting and installing a non-ABB d
with the drive.
u
When a d /d
u t
A d /d filter must be used with drives of voltages from 500 V to 690 V according to
Requirements table
the

Filter and installation requirements

1. The filter is an LCR filter or an L filter (a series inductor: three single-phase
inductors or one three-phase inductor).
Make sure that the approximate per-phase impedance of the filter inductor is
1.5% for drives of frame size R7 and 2% for drives of frame size R8 when
calculated as follows:
where
Z
impedance of the inductor divided by the nominal phase impedance of the motor, in
L =
percentage
L
per-phase inductance of the filter
=
f rated motor frequency
N =
I
rated motor current
N =
U
rated motor voltage.
N =
u
/d
t
filter must be used
on page 40.
2  f N L     ----------------- - 100
Z L =

Non-ABB du/dt filter selection 139

t
filter selection

3 I
N

U
N
13
u t
/d filter