ABB RVC User Manual

27
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
ϕ
= 1 or capacitive load
(set desired cos
ϕ
to 0.95 ind.)
1. Select MAN Mode
2. Add two or more steps by pressing the +
button.
3. Select AUTO 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?
• 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
ϕ
=1
2. Select AUTO Mode
Capacitor steps will now be automatically
switched on to compensate the inductive
load (the controller will not reset 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
ϕ
= 1. Select a lower value for cos
ϕ
.
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 the
switching delay time).
13. Testing and troubleshooting

ABB RVC Specifications

General

Brand	ABB
Model	RVC
Category	Controller
Language	English