Sigma's new generation Reactive Power Control Relays are technological devices designed to balance the active and reactive power ratios in accordance with the facility's needs by switching capacitors and shunt reactors on and off. Sigma Reactive Power Control Relays provide comprehensive solutions for all compensation needs in facilities with balanced or unbalanced loads, rapidly changing or normal loads, facilities requiring SVC, and facilities operating outside inductive and capacitive limits.
• Switches 3-phase or 1-phase capacitors on and off.
• In SVC types, switches 1-phase shunt reactors on and off using inductive load drivers, and switches 3-phase shunt reactors on and off without using inductive load drivers.
• Sigma Reactive Power Control Relay also functions as an energy analyzer, capable of measuring over 100 energy parameters (current-voltage harmonics, hourly, daily, weekly, monthly energy ratios, tariffed energies, phase-based energies and phase-based energy ratios, import-export-capacitive-inductive-apparent energies, neutral current, phase current's voltage-power-power factor values, cos φ, etc.) with 0.2% accuracy within 20 ms.
• Measures total current harmonic distortion (THDI) and voltage harmonic distortion (THDV), and measures current and voltage harmonics up to the 63rd harmonic separately.
• Sigma Reactive Power Control Relay issues an alarm to the user in case of excessive internal relay temperature, voltage rise, or when inductive and capacitive power limits are exceeded.
• Sigma Reactive Power Control Relay analyzes the system and its requirements. If there is a polarity error within the system, it corrects the connections internally. In cases where the relay's capacitor-shunt reactor step number or power is insufficient, it provides recommendations to the user via the LCD screen.
