SATEC C192PF8-RPR - Manual (Page 49)

Chapter 5 PFC Setup and Operation 44
Chapter 5 PFC Setup and Operation
5. PFC Setup and Operation
This chapter describes how to setup the Power Factor Controller for your
application and explains its important features. Brief instructions are included for
certain setup and display operations. Complete setup instructions are found in
Section 4.13, PFC Setup; complete display information is found in Chapter 6
(Data Display) and Chapter 7 (Viewing Status Information).
5.1 Capacitor Bank Control Options
The C192PF8-RPR offers you three options to control capacitor banks in order to
meet the conditions of your electrical equipment and avoid unnecessary
switching. All options may be used at the same time when applied to different
banks.
Automatic Control
This option puts the banks under full PFC control and allows them to be used in
either a manual or automatic PFC switching program.
To put the capacitor bank under PFC control, specify the bank size in kvar to allow for
manual or automatic bank switching (see Section 4.13, PFC Setup).
Manual Control
This option allows some of the banks to be manually switched in using direct
control over the output relays. You can use this option for checking or repairing
capacitor banks.
This option does not use the PFC to control the capacitor banks. Switching is
done outside the PFC by directly forcing the output relays from the front panel
(see Section 4.12, Manual Relay Control Menu) or via communications. The
switched in banks remain connected until they are disconnected manually.
The size of the capacitor banks intended for direct manual control should be set to none
(see Section 4.13, PFC Setup), thus moving them out of the PFC control.
Since the PFC does not manage the capacitor banks, and forcing the output
relays also overrides the common alarm setpoint conditions, neither PFC setpoint
protection nor common alarm setpoints can be used to protect the capacitor
banks against harmful alarm conditions. This should be done separately, outside
the C192PF8-RPR.
Permanently Switched (Non-Programmable) Banks
This option allows some of the banks to be automatically switched in whenever
the PFC is put into operation and to remain permanently connected any time the
PFC is operating. This option is intended to avoid excess cycling of the capacitor
banks that draw near their cycling limit, or to put constant capacitive load onto the
network to avoid non-necessary switching.