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8.3 Repairing
In case it is confirmed that the AVR is defec�ve, we recommend to contact Beltrame CSE to agree about repairing condi�ons.
We strongly recommend to avoid to return back any devices without previous agreement.
The user is responsible for the correct packaging of the regulator.
Unstable or Low Output Voltage under load opera�on
• Compared excita�on voltage with power supply voltage
• Check programmable digital input se�ng and connec�on
• Check parameters of voltage regulator
• Regulator error
• Set point error
• Control element fault
• Check/adjust stability se�ngs r.350 and r.351
• Unstable Increase/Decrease inputs
• Unstable External analog input
• Check wiring for loose contacts
Irregular instability, i.e. sporadic over - or under excita�on which is not caused by grid varia�on
• Check droop compensa�on se�ng
• Check external current transformer circuit
• Gen CB Closed Status not ac�ve
• Poor effect of the Droop influence on the
voltage regulator or C.T. defec�ve
measurement
• Some limiters are ac�ve: machine within
inadmissible opera�ng range
• Check programmable digital input se�ng and connec�on
• Bring machine into normal opera�ng range by adjus�ng the set point.
• Check se�ng of limiters
Problems with External (remote) controls
• Measure control voltage
• Check wiring
• No external control voltage
• Configura�on of the digital or analog
inputs are not correct
• Check configura�on
Unstable parallel opera�on with grid
Periodic oscilla�on of reac�ve and ac�ve power (instability)
• Were changes made to the grid configura�on?
• Are addi�onal outputs, loads etc. installed?
Yes: re-set regulator
No: check parameters of Auto and PF, Var regulator
• Check/adjust stability se�ngs
• Not correct regulator se�ngs
BELTRAME
CENTRO SERVIZI ENERGIA
Summary of Contents for S 2022
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