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Connector:
Cage clamp type (2.5mm² single core cable).
Front plate protection:
IP 43 (IP 54 on request).
Relative humidity:
Maximum 95%; non-condensing.
CE Marked.
A3. Testing and troubleshooting
Testing
After installation of the automatic capacitor bank and programming of the switching
parameters, the following tests can be performed depending on load situation.
A. No load or cos j = 1 or capacitive load (set desired cos j to 0.95 ind.)
1.
Select manual mode
2.
Add two or more steps.
3.
Select automatic mode.
All capacitor steps must be switched off with the programmed delay time between each
switching operation.
If all steps are not switched off, check the following:
Has an inductive load been connected?
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Have the correct C/k ratio and/or step size been programmed?
(It is recommended that the C/k value be set to a value slightly higher than the calculated
value)
B. Inductive load
1.
Set desired cos j =1
2.
Select automatic mode.
Capacitor steps will now be automatically switched on to compensate the inductive load
(the controller will not switch steps if the inductive current is lower than the preset C/k
value. In such a case, test according to A above).
If all steps are switched on and there is still a demand for additional steps, then check
the setting of C/k.
If it is correct, then the bank is too small to compensate the cos j = 1. Select a lower value
for cos j.
When one stage repeatedly switches on and off, it means the C/k is set too low (unless
the load actually fluctuates periodically with a time period equal to or close to the
70 Appendices ç Manual Power Factor Controller RVT
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