MV (medium voltage) capacitor banks are advanced technological solutions used in electrical networks to manage reactive power and improve power quality. In facilities with medium-voltage loads, these capacitor banks are installed to compensate for the reactive power requirements of these loads. MV capacitor bank can be designed as fixed units for medium voltage motor compensation or as automatic systems where the capacitor steps are automatically switched on and off by a medium voltage reactive power control relay connected to a medium voltage busbar. In addition, these systems can be equipped with unbalance protection through the use of a double star connection.

What is a MV Power Factor Correction System?
MV power factor correction systems are methods used in medium voltage electrical networks to manage reactive power and improve power quality. Reactive power is essential for powering inductive loads such as motors and transformers in energy-intensive industrial plants. However, reactive power introduces unwanted loads into power transmission lines, resulting in energy losses. Therefore, MV power factor correction systems are used to compensate for reactive power and improve the power factor, thereby optimising the efficiency of the electrical network.
Operating Data
| Rated Voltage | 3,6 – … – 36kV |
| Basic Insulation Level (B.I.L) | According to Rated Voltage |
| Rated Frequency | 50/60Hz |
| Rated Power | up to 5MVAr ( Please contact for your requests) |
| Ambient Temperature | ≤55⁰C |
Standard
TS EN 60871 – 1, TS EN 60076-6
Electrical Design
| Connection | Fixed / Automatic / Double star connection with unbalance protection |
| Short Circuit Protection | MV Fuse |
| Protection Units | Surge Arresters, Earthing Switches, Discharge Coils |
| Power Factor | Microprocessor based Power Factor Correction Relay |
| Switching | Vacuum/SF6 Contactor or Circuit Breaker |
| Reactors | Air Core, Dry Type Inrush Current Limiting Reactors |
| Capacitors | Film-foil type, Bio-degradable oil Impregnated |
Enclosure Design
| Installation | Indoor / Outdoor |
| Protection Degree | IP00…..…IP54 |
| Cooling | Natural / Forced ventilation |
| Enclosure | Painted Galvanized Steel Sheet, Hot dip Galvanized Steel Sheet or requested |
Benefits of MV Power Factor Correction Systems
MV Power Factor Correction Systems play an important role in helping businesses achieve their sustainability goals. The benefits of MV Compensation systems can be listed as follows;
- Energy Efficiency: By balancing reactive power, the system reduces energy losses and energy consumption, resulting in cost savings.
- Power Factor Improvement: By increasing the power factor closer to unity, the network can operate more efficiently and mitigate the penalties associated with low power factor.
- Voltage Stability: The system minimises voltage fluctuations, promoting a more stable and reliable electrical infrastructure.
- Capacity Increase: The solution expands the capacity of the existing electrical infrastructure to accommodate additional loads.
- Harmonic Reduction: The system filters out harmonic distortion, improving power quality and delivering a cleaner, more stable electrical signal.
Characteristics of MV Power Factor Correction Systems
Offering reliable and stable performance in energy distribution and control processes MV Power Factor Correction Systems features are as follows;
Ready-to-install panel system:
Provides quick and easy installation for industrial facilities or power distribution networks. Its user-friendly design minimises installation time and increases operational efficiency. It is an ideal solution for reactive power compensation within the electrical infrastructure.
Earthing switch for disconnecting the power source and grounding capacitors:
Designed with safety in mind, it immediately shuts down the system in an emergency and ensures safe maintenance. Its ability to disconnect the power source and ground the capacitors helps protect the integrity of the system.
Current-limiting reactor:
Controls sudden current surges and provides protection against excessive currents in the system. It stabilises the electrical system by limiting current fluctuations due to load changes.
Fuse protection:
Protects the system in the event of overcurrent or short circuit conditions, ensuring equipment safety. For sensitive fuse systems, it provides rapid intervention and protection in the event of a system failure.
Optional double star connection for imbalance protection:
Imbalance protection monitors and protects against phase imbalance in the system. The double star connection feature detects imbalances more accurately and improves system performance.
Why Use a Power Factor Correction System?
MV power factor correction systems play an indispensable role in modern electrical networks in terms of energy efficiency and power quality. Why use a power factor correction system?
MV power factor correction systems are essential for improving the performance and efficiency of electrical networks. These systems manage reactive power, which is critical for industrial plants and large energy consumers. Reactive power creates unwanted loads on power transmission lines, resulting in energy losses. MV power factor correction systems compensate for reactive power to minimise these losses and improve the power factor, thereby reducing energy costs and increasing system efficiency. They also provide voltage stability, allowing electrical systems to operate more reliably and consistently. These systems also reduce harmonic distortion, providing cleaner and higher quality electrical power.
At What Power Level is Power Factor Correction Needed?
The need for power factor correction is determined by the level of reactive power, rather than active power. Reactive power arises from inductive loads, and power factor correction is necessary to compensate these loads. The type of facility, equipment used, and energy consumption patterns all influence the required power factor correction capacity. Therefore, an engineering analysis should be performed to measure the current reactive power and guide the selection and installation of an appropriately sized power factor correction system.
Ergun Elektrik MV Power Factor Correction Systems
Ergun Elektrik provides professional and effective MV (Medium Voltage) power factor correction systems. Their MV capacitor banks improve energy efficiency, resulting in cost savings and more effective network operation. Ergun Elektrik’s flexible, customised designs provide a reliable solution for industrial plants and large energy consuming systems.