C-60, Wing-A, Phase-II, Noida-201 305, Dist: Gautam Budh Nagar (U.P) INDIA Phone : +91-120-38748 00 / 01
C&S Electric Ltd.
(Protection & Measurement Devices)
For further information, please contact:
1800 572 2012
Technical Question or After-sales Service
Customer Center Quick Response
Service, Excellent Technical Support
Issue Date : 30.01.17, Rev
. No : 03, Rev
. Date : 28.04.22
NOTE
The content in this catalog is for general information, C&S reserves the
right to change the design, content or specification contained in this
catalog without prior notice.
Display Not
Visible
Wrong
measurement
of voltage
Wrong
measurement
of current
Wrong
measurement
of power factor
Either no voltage or wrong
voltage is applied. Voltage
applied to wrong terminal
Voltage applied to wrong
terminal / Fuse open
Wrong connection /
wrong CT ratio set
CT Polarity wrong Phase
Angle set value not
as per present wiring
1. Verify the Aux supply terminals.
2. Refer the aux supply range in Technical
1. Check that voltage is connected to
designated terminal or not.
2. Check the fuse in the voltage connection is
ok or not.
1. Check if CT ratio value is as per installed CT.
2. Check if CT is connected to different phase or
not.
1. CT polarity need to be checked.
2. Refer the section connection scheme and
verify the phase angle to be set for various wiring.
Possible Causes
Observation
Action to be taken
Over
Compensation
Alarm
Under
Compensation
Alarm
Target Cos phi is within
limit Conn.scheme is not
as per phase angle set
All the capacitor steps
were switched On. But
target cos phi was not
achieved
1. Verify the set target cos phi.
2. Set the phase angle as per the connection
scheme.
1. Check whether installed rating of capacitor
sufficient for present load and target cos phi.
2. Refer the C/k ratio value in basic setting in
page 8.
Trouble Shooting Points
No capacitor
steps are
switching
though
present load
is inductive
CSPF-100 is in Manual
Mode / Loose
Connection to capacitor
contactors / Target cos
phi is within defined limit /
wrong setting of C/k
value / A parallel
connection from CT
secondary is connected
to any ammeter installed
1. In Manual mode Auto/Manual Led will be ON
in Manual mode user has to press up/down key
to connect/disconnect capacitor bank(with
ON/OFF delay). If Manual mode operation is not
required switch to Auto mode.
2. Correct if it is loose connection.
3. Check the target cos phi and C/k value set
under programmable parameters.
4. Verify whether connected capacitor power
ratio is as per selected program selection or not.
5. Check that if set phase angle value is correct
for present connection.
6. All measuring instruments in current path
must be in series.
C a p a c i t o r
banks are not
switched OFF
i n c a s e o f
O v e r / U n d e r
current / Over
Voltage / Over
t e m p e r a t u r e
e v e n t h o u g h
fault LED is ON
Capacitor Bank Trip
selection is set to OFF
Change the selection setting to ON
16
