The new digital REGO series not only offers a high reliability and accuracy in the reactive power compensation but also a user interface for the configuration and programming, which is extremely intuitive and suitable to all applications. The new microprocessor also permits a better management of the innovative functions implemented.

Automatic reactive power control relays are microprocessor controlled systems that automatically manage capacitor banks to compensate for the reactive power absorbed by the load. REGO series available in a 144x144mm with 7 or 12 output relays, and 96x96 mm with 5 output relays.

Capacitor banks are switched on and off as the capacitive reactive power required to reach the set value of the load Cosφ in the regulator exceeds 70% of the power of the first bank for a time corresponding to the set delay.
These generation control relays also offer measurement, protection and Data Acquisition for PC Transmission and Storage (Rego 7-12). The Rego 7-12 version can perform net data communication by means of Neptune-Ducati instruments / Analyzers.

The most innovative features of REGO are:

• Sole parameter to be set up during installation: CT ratio (i.e 1000/5 : set 200).
  
  
• CT circulation direction is automatically adjusted to control relay internal data.
  
  
• Cosφ linear setting from 0.8 IND to 0.8 CAP.
  
  
• C/k automatic setting.
  
  
• Banks manual control, regardless of the line value measured.
  
  
• Inhibition of the unused output relays.
  
  
• Setting for PF Correction of asynchronous generators
  
  
• Operating time setting from 0.5 to 300 sec.
  
  
• Discharge time setting from 5 to 255 sec.
  
  
• 3 logics to connect/disconnect banks, with automatic detection
  
  
• Universal geometric logic (1:2:4), in which it is possible to obtain a high number of steps, while minimising the number of banks;
  
  
• Circular and linear logic (1:1:1), in which the output relays are controlled in a circular sequence, thus allowing a more even distribution of operations on contacts and considerably reducing maintenance required;
  
  
• Semicircular and linear logic (1:2:2), in which it is possible to obtain a higher number of steps than the logic (1:1:1).

The REGO family shows on its front display:
Line Cosj; Line current; Mains voltage; Line active power; Line reactive power; CT current crest factor (THD); Counter of operations performed by each output relay; Number of alarm conditions; Powers of individual steps; Internal panel inside temperature, in the area around the power control relay.

The PROTECTION SYSTEM which protects power factor correction system includes:

• Overvoltage alarm activated even when no bank is connected; it protects the regulator from any overvoltage which is higher than the allowed one, that is more than 30 seconds;
  
  
• Over temperature protection which is active even when no capacitor bank is on; it is tripped when the air temperature around the control relay exceeds the limit for at least 15 seconds;
  
  
• Harmonic overload protection which protects the capacitors from peak voltages;
  
  
• P.F correction fault which indicates that the cosj value remains below the set value for more than two hours, while all banks are switched on;
  
  
• No voltage protection which cuts out relays when there is no voltage for more than two periods. When power voltage is back, the control unit will operate under automatic control.
  

Except for the latter, protections can have a remote control through a clean contact.
All the protections (except the last one) can be either inhibiten or made self-resettable (the regulator will start again after 30 m's stand-by under alert conditions).