Single-Phase Reactive Power Control Relays
A single-phase reactive power control relay is a power factor correction relay that measures the power factor through a single current transformer and switches three-phase capacitor steps on and off; it is chosen by number of steps, supply voltage, housing size and indicator type. It is used in the power factor correction panels of workshops, pumping stations and small industrial facilities where the load consists mainly of three-phase motors and the phases are evenly loaded. The category includes the Entes RG-8T and RG-12T and the Tense RGM-07E and RGM-12E models; the Entes models are specified with 230 V AC supply, while the Tense product data states 7 and 12 steps, a 144 × 144 mm housing, LED indicator and cos φ measurement. Determine the number of steps by the number of capacitor banks in the panel. A single-phase measuring relay is not a substitute for a relay that measures the three phases separately in unbalanced facilities where single-phase loads predominate; it cannot account for the reactive power in the phases it does not measure.
Products
- Tense RGM-12E Single-Phase Reactive Power Control Relay, 12 stage — Tense · SKU: RGM-12E · TRY 3,572.00 · In stock
- Tense RGM-07E Single-Phase Reactive Power Control Relay, 7 stage — Tense · SKU: RGM-07E · TRY 3,426.30 · In stock
- Entes RG-12T Single-Phase Reactive Power Control Relay, 230VAC Supply — Entes · SKU: M0343 · TRY 6,623.40 · In stock
- Entes RG-8T Single-Phase Reactive Power Control Relay, 230VAC Supply — Entes · SKU: M0342 · TRY 5,703.60 · In stock
How to choose Single-Phase Reactive Power Control Relays
A single-phase reactive power control relay is a power factor correction relay that measures the power factor through a single current transformer and switches three-phase capacitor steps on and off; it is chosen by number of steps, supply voltage, housing size and indicator type. It is used in the power factor correction panels of workshops, pumping stations and small industrial facilities where the load consists mainly of three-phase motors and the phases are evenly loaded.
- Take reactive power demand and harmonic distortion levels from site measurements or project calculations.
- Compare kVAr step sizes, rated voltage and step count against the compensation panel layout.
- Select capacitor duty contactors, harmonic filter reactors and discharge resistors together with the capacitor bank.
Frequently asked questions
What is Single-Phase Reactive Power Control Relays and where is it used?
A single-phase reactive power control relay is a power factor correction relay that measures the power factor through a single current transformer and switches three-phase capacitor steps on and off; it is chosen by number of steps, supply voltage, housing size and indicator type. It is used in the power factor correction panels of workshops, pumping stations and small industrial facilities where the load consists mainly of three-phase motors and the phases are evenly loaded.
What should I compare when choosing Single-Phase Reactive Power Control Relays?
Compare the intended use, technical values, dimensions, connection type and compatibility shown on each product page.
Where can I find technical details for Single-Phase Reactive Power Control Relays products?
A single-phase measuring relay is not a substitute for a relay that measures the three phases separately in unbalanced facilities where single-phase loads predominate; it cannot account for the reactive power in the phases it does not measure.
Reactive Power Control Relays Selection Guide: Technical Criteria and Engineering Practice