Low-Voltage Capacitor Bank

Advantages:

Automatic compensation

Fast response≤20ms

Reduce electricity consumption

TFT colorful touch screen

Intelligent controller automatic monitoring

Multiple fans cooling control

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In production and our daily life, most load types in the power system is inductive loads, and the power factor of the grid is relatively low. A lower power factor reduces equipment utilization, increases power supply investment, damages voltage quality, reduces equipment lifespan, and greatly increases line losses. Therefore, by connecting a capacitor compensation cabinet in the power system, inductive loads can be balanced, power factor can be improved, and equipment utilization can be enhanced. The low-voltage capacitor compensation cabinet consists of a cabinet body, busbar, fuses, switches, surge, capacitor, reactor, PFC controller, and multifunctional power meter.

Low-Voltage Capacitor Banks are widely used in various power systems, especially in situations with a large number of inductive loads, such as industrial factories, commercial buildings, public facilities, etc. ‌

Industrial factories: In industrial production, electric motors and other large equipment generate a large amount of reactive power, and the use of compensation cabinets can significantly improve the efficiency of electricity use in factories.

Commercial buildings: In large commercial complexes or office buildings, compensation cabinets can help optimize electricity usage and reduce electricity bills.

Hospitals and schools: improve the stability and reliability of the power system by using compensation cabinets.

When you need a Low-Voltage Capacitor Bank for power factor correction or reactive power support, Sinava Power Solution has the solutions you need. With decades of experience in supplying industrial capacitor banks, our team can provide a customized solution that is tailored to your specific application and unique needs.

FAQs

Q: What is a capacitor bank?

A: A capacitor bank is a collection of capacitors connected in series or parallel to store electrical energy, which is primarily used for power factor correction and voltage stabilization.

Q: How do capacitor banks work?

A: They provide reactive power to compensate for inductive loads, thereby improving the power factor and reducing energy losses in the system.

Q: What are the types of capacitor banks?

A: The main types include shunt, series, fixed, and automatic capacitor banks.

Q: What does it mean if the power factor is more than 1?

A: A power factor of more than one is impossible. The power factor of more than one implies that the phase difference between voltage and current is somehow generating electricity.

Q: What is the difference between a capacitor bank and a harmonic filter?

A: As previously discussed, a capacitor bank consists of a collection of power factor correction capacitors interconnected in either series or parallel, functioning as a unified system.

Now, when we introduce a reactor into this capacitor bank configuration, we transform it into a harmonic filter. The term “harmonic filter” is derived from the synergy between the capacitor’s capacitance and the reactor’s inductance, which collectively establish a low-impedance pathway tailored to a specific frequency. To simplify this concept, think of harmonic filters as constructing a high-speed express lane with minimal resistance for electrons operating at a particular harmonic frequency.

By carefully selecting the appropriate combination of capacitance and inductance, we can effectively engineer this low-resistance pathway, designed to filter out and mitigate current harmonics from the overall system.

Q: Is capacitor bank switching complex?

A: Switching capacitor banks in an electrical system can lead to transient voltage and current effects, impacting equipment, power quality, and safety.

Energization: Capacitor banks initially resemble a short circuit during energization, causing voltage drops and transient overvoltages. While not typically harmful to utility equipment, they can affect sensitive customer equipment.
In back-to-back arrangements, energizing the second bank may lead to high inrush currents, shortening the device’s life.

De-energization: When a capacitor switch opens, the voltage across the contacts combines the system and capacitor bank voltages. This can cause re-strikes, generating overvoltages approaching up to 3 p.u.
Re-strikes can trigger issues like ruptured capacitor cans, blown fuses, and contact wear, leading to dielectric failures.

Low-Voltage Capacitor Banks in electrical engineering are essential components, offering solutions for improving power efficiency and reliability in various applications. Their ability to correct power factors, manage reactive power, and enhance voltage regulation makes them essential to your electrical systems. Contact us today to explore our range of power factor correction capacitors!

Technical Specifications

TSC system

CSC system

Grid rated voltage	400V/480V/550V
Frequency	50/60Hz (±5%)
Rated reactive power	100~400Kvar
Operating mode	Automatic
Network pollution level	Low polluted
Harmonic pollution rate	15…25% [Gh/Sn]
Total harmonic distorsion of voltage	3…4% [THDU]
Power per step	10~50kvar
Switch type	Thyristor switch	Composite switch
Switching times	10^6 times	1.20 million times
Response time	≤20ms	≤1s
Capacitor technology	3 phase capacitors
Capacitance tolerance	-5% to 10%
Detuned Reactors	7% / 14%
[Uimp] rated impulse withstand voltage	8kV
Main incomer protection	Circuit breaker protection
Breaking capacity	Icu 35kA
Control type	Rotary handle
Step protection type	Overload: harmonic control Short-circuit: main circuit breaker
Colour	Grey (RAL 7035)
Weight	150-300kgs
Height	1000 * 1000 * 2000mm
Environment
Mounting location	Indoor Free Standing
IP degree of protection	IP40
Relative humidity	0…95%
Operating altitude	≤ 2000m
Ambient air temperature for operation	-5…45 °C
Average ambient air temperature for operation	35 °C (annual)