NOTE!
By default, filter is programmed for PCC side installation
PCC1
AAF
M
M
M
130BB513.11
Figure 4.32 Current transformers installed on source (PCC) side
for group compensation.
PCC1
AAF
M
M
M
130BB514.11
Figure 4.33 Current transformers installed on load side for group
compensation.
If the current transformers are installed on the source
(PCC) side, the filter will expect a sinusoidal (corrected)
signal feedback from the three sensors. If the sensors are
installed on the load side, the received signal will be
subtracted from the ideal sine wave to calculate the
needed corrected current.
NOTE!
Erratic filter operation can be a result of incorrect current
transformers connection point programming
4.5.8 Auto CT Detection
The VLT Active Filter is able to perform an auto detection
of the installed CT. The CT auto detection can be
conducted both while the system is running and at no
load conditions. The filter injects a prefixed current of
known amplitude and phase angle and measures the
returned CT input. The performance is conducted on each
phase individually and for several frequencies to ensure
phase sequence and RMS are set correctly.
The Auto CT detection is pending on the follow conditions:
How to Install
VLT Active Filter AAF 00x
MG.90.V2.22 - VLT
®
is a registered Danfoss trademark
4-25
4
4
Содержание VLT AAF00x
Страница 1: ...MAKING MODERN LIVING POSSIBLE VLT Active Filter AAF00x Instruction Manual...
Страница 5: ...Contents VLT Active Filter AAF 00x MG 90 V2 22 VLT is a registered Danfoss trademark...
Страница 13: ...Introduction to VLT Active VLT Active Filter AAF 00x 3 4 MG 90 V2 22 VLT is a registered Danfoss trademark 3 3...
Страница 59: ...How to Operate the Active F VLT Active Filter AAF 00x 5 8 MG 90 V2 22 VLT is a registered Danfoss trademark 5 5...
Страница 95: ...How to Program VLT Active Filter AAF 00x 6 36 MG 90 V2 22 VLT is a registered Danfoss trademark 6 6...
Страница 103: ...RS 485 Installation and set VLT Active Filter AAF 00x 7 8 MG 90 V2 22 VLT is a registered Danfoss trademark 7 7...
Страница 117: ...www danfoss com drives MG90V222 130R0506 MG90V222 Rev 2011 06 17...