Visual inspection:
- Power cables
- Earthing
- CT wiring and 1 or 5A HW check with AF-Card set-up
- Control wire
- Mounting
- Cooling
- Dust
- Temperature
- Glant plate check
Document
Environment
OK
Yes
Fluke 435
available
Make grid analyses:
- Connect voltage and current probes at
transformer
- Record THDv and THDi at normal operation and
full load
CT installed at different
voltage (MV) then filter
300-22
No
Yes
CT placement
Location: 300-26
PCC side
OK
Check all CTs have
same primary rate
Power-on filter
program I/Os
Document
THDv
Yes
Sum transformers
used
No
Load side
Manual CT set-up:
- Polarity: 300-25
- Sequency: 33-24
- Primary rate: 300-20
Failed
Auto CT
300-29
Remove CT shorts
at the CT terminal
block
Succesful
Program filter mode:
- Priority 300-01
- Cos fi setpoint 300-35
- Harmonic mode 300-00
- In Selective 300-30
Document
Settings
Fault!
Check
installation
Turn on filter
”Auto mode”
No
Running at around 10-30A
Yes
Stop filter and remove
the three CT-shorts at
CT terminals
Turn on filter
”Auto mode”
Document
Performance
Make grid analyses:
- Record THDv and THDi improvements
- RMS
- True PF and displacement PF
Yes
Fluke 435
available
No
Check CT
settings again
No
Check that THDi read out
value is reduced to 5-9%
when filter is turned on
130BB949.10
How to Install
VLT Active Filter AAF 00x
4-38
MG.90.V2.22 - VLT
®
is a registered Danfoss trademark
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