All-Pole Sine Filter - Eaton PowerXL DA1 Series Installation Manual

6.12 All-pole sine filter

￫
Please inquire for DX-SIN3-...-A all-pole sine filters for motor
currents of up to 180 A.
All-pole sine filters make it possible to reduce differential-mode and
common-mode interference at the variable frequency drive output when
using extremely long motor cable lengths. This makes it possible to eliminate
the bearing currents, caused by common-mode voltage, between the motor
windings' neutral point and earth potential, extending the motor's lifespan.
DX-SIN3-...-A all-pole sine filters also require being connected to DC+ (or +)
and DC- (or -) on the internal DC link in DA1 variable frequency drives.
They can be used
• for fixed switching frequencies ≧ 8 kHz (P2-24, double modulation),
• Output voltage U
• Rotating field frequencies (f
They make it possible to forego the use of screened motor cables.
￫
DX-SIN3-...-A all-pole sine filters may be operated only with
fixed switching frequencies.
Accordingly, the switching frequency (P2-24) must be set to the
value set in parameter P6-02 (auto temperature management)
(P2-24 = P6-02).
Permissible switching frequencies for DA1 with DX-SIN3...:
1 ≙ 8 kHz; 2 ≙12 kHz
For the DA1 variable frequency drive, the set value with the
double-modulation procedure is the double value of the
effective value in the sine filter (1 ≙ 8 kHz → 4 kHz; 2 ≙ 12 kHz
→ 6 kHz).
DA1 Variable Frequency Drives 08/18 MN04020005Z-EN www.eaton.com
to 500 V,
2max
) of 0 to 60 Hz.
2
6 Specifications
6.12 All-pole sine filter
193