Single-Phase Shunt Reactors

A single-phase shunt reactor is a 230 V coil, also called a monophase shunt reactor, that is connected between phase and neutral and balances only the capacitive reactive power in the phase it is connected to. It is used to correct each phase according to its own capacitive load in facilities such as stores, offices and housing complexes, where LED lighting, single-phase UPS units and electronic devices are not evenly distributed across the phases. The category includes Tibcon monophase and Entes ENT.SRS1 series 230 V 50 Hz reactors; ratings such as 0.25 kVAr, 0.5 kVAr, 1.5 kVAr, 5 kVAr and 10 kVAr are offered. Choose the reactor power by the capacitive reactive power measured in the relevant phase, the power steps by the relay's step plan, the rated voltage and frequency by the grid, and the number of reactors by the free step outputs on the relay. For single-phase steps to be managed, the reactive power control relay in the panel must be of a type that measures the phases separately and can connect single-phase shunt reactors. A shunt reactor is not a harmonic filter reactor connected in series with a capacitor to protect the step from harmonic resonance; it is connected in parallel with the grid and balances capacitive power.

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How to choose Single-Phase Shunt Reactors

A single-phase shunt reactor is a 230 V coil, also called a monophase shunt reactor, that is connected between phase and neutral and balances only the capacitive reactive power in the phase it is connected to. It is used to correct each phase according to its own capacitive load in facilities such as stores, offices and housing complexes, where LED lighting, single-phase UPS units and electronic devices are not evenly distributed across the phases.

  • 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 Shunt Reactors and where is it used?

A single-phase shunt reactor is a 230 V coil, also called a monophase shunt reactor, that is connected between phase and neutral and balances only the capacitive reactive power in the phase it is connected to. It is used to correct each phase according to its own capacitive load in facilities such as stores, offices and housing complexes, where LED lighting, single-phase UPS units and electronic devices are not evenly distributed across the phases.

What should I compare when choosing Single-Phase Shunt Reactors?

Choose the reactor power by the capacitive reactive power measured in the relevant phase, the power steps by the relay's step plan, the rated voltage and frequency by the grid, and the number of reactors by the free step outputs on the relay.

Where can I find technical details for Single-Phase Shunt Reactors products?

It is used to correct each phase according to its own capacitive load in facilities such as stores, offices and housing complexes, where LED lighting, single-phase UPS units and electronic devices are not evenly distributed across the phases.

Single-Phase Shunt Reactors Selection Guide: Technical Criteria & Application Standards