Reactive Power Control Relays
Sigma new-generation reactive power control relays are technological devices designed to switch capacitors and shunt reactors in and out of the circuit to balance active and reactive power ratios according to facility requirements.
They are offered with features that provide complete and comprehensive solutions for all compensation needs in balanced or unbalanced loads, rapidly fluctuating or normally varying loads, facilities requiring SVC (Static Var Compensator), and installations operating outside inductive and capacitive limits.
Sigma reactive power control relays analyze the system and its requirements.
Consequently, if there is a fault such as a polarity error in the system, they internally adjust the connections; in cases where the number of steps or the power rating of capacitors and shunt reactors is insufficient, they provide recommendations to the user via the LCD screen.
Connects and disconnects capacitors
In SVC-type models, switches single-phase shunt reactors in and out using an inductive load driver, and three-phase shunt reactors without using an inductive load driver
Measures over 100 energy parameters (current-voltage harmonics, hourly, daily, weekly, monthly energy ratios, tariffed energies, per-phase energies and per-phase energy ratios, import-export-capacitive-inductive-apparent energies, neutral current, phase current voltage-power-power factor values, cos fi, etc.) It has the ability to measure with 0.2% accuracy within 20 ms
Measures total harmonic distortion of current (THDI) and voltage (THDV), as well as individual current and voltage harmonics up to the 63rd harmonic
Provides user warnings via an alarm output in the event of excessive internal temperature rise of the relay, overvoltage, or exceeding inductive and capacitive power limits
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