CIRCUTOR OPTIM-EMS-C Series - Manual (Page 20)

5.- MAINTENANCE
5.1.- SAFETY REGULATIONS
Take the safety regulations listed in section of this manual into account before
operating the units “ 3.1.- PRELIMINARY RECOMMENDATIONS”
The National Electric Code of the country where the capacitor bank is installed or
operated should be strictly followed.
5.2.- MAINTENANCE WITH THE CAPACITOR BANK DISCONNECTED
5.2.1. BASIC MAINTENANCE PROTOCOL
Monthly:
 Visually inspect the capacitors.
 Check the protection circuit breakers.
 Control the ambient temperature (average of 30 ºC In accordance with IEC 60831 ).
 Control the service voltage (especially during moments of low load, it must not exceed
the nominal +10%).
Bi-annually:
 Keep the capacitor and reactor terminals clean.
 Check that the thyristors are not short-circuited.
To do so, check that if you cut the power supply of the regulator there is no current in any
of the capacitor phases.
 Check that the capacitor current is not lower than 75% nor greater than 120% of the
nominal value by phase and that there is no phase unbalance greater than 15%.
Annually:
Check the capacity of the capacitors at the different steps.
An indirect verification can be performed by checking that the consumption matches the
value indicated in Table 5 , with a maximum deviation of ± 10%.
Check the tightening torque of all terminal connections on the different power ele-
ments.
 Inspect the circuit breakers.
- Power Circuit: Check the continuity and temperature of the circuit breakers.
- Control Circuit: Check the continuity and temperature of the two-pole circuit breaker.
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OPTIM EMS-C series
Instruction Manual