Power Factor Correction Capacitor Bank Cabinet

1. Introduction to Power Factor Correction Capacitor Bank Cabinet

A capacitor bank is a group of capacitors arranged side by side and separated by insulating dielectric layers, designed to store and release electrical energy in an electrical circuit. Capacitor banks are also known by various names such as power factor correction capacitors, reactive power compensation capacitors, or simply, power factor correction units.
A typical power factor correction capacitor bank cabinet consists of capacitors connected in parallel with the load, controlled by an automatic capacitor control unit through a contactor. The main function of the capacitor bank cabinet is to improve the power factor (cosφ) thereby reducing reactive power (wasted power) to save costs. Users will then reduce or eliminate penalties for low power factor as required by electricity providers.
The capacitor bank system can be separately delivered or integrated into distribution switchboards. Careful consideration is given to ventilation in our designs to ensure optimal system operation without power loss and prolong system lifespan.
The capacitor bank system is equipped with either a 6-step or 12-step capacitor bank controller. The capacity of each low voltage capacitor unit ranges from 10 – 20 – 25 – 30 – 50 – 100 kVA.

Power Factor Correction Capacitor Bank Cabinet of Vintec

2. Applications of Power Factor Correction Capacitor Bank Cabinet

Power factor correction cabinets are energy-saving systems commonly used in factories and industrial plants to install low voltage power factor correction units. These units serve to improve power factor, providing technical and economic advantages, particularly in reducing annual electricity costs. Additionally, they reduce power losses and voltage drops in the electrical grid, thereby enhancing grid quality.
Fixed or multi-step automatic power factor correction cabinets are applied to match user loads, ensuring the power factor complies with electricity provider requirements (typically > 0.8), thus ensuring proper and adequate compensation.

3. Construction of Power Factor Correction Capacitor Bank Cabinet

The construction of a capacitor bank primarily involves paper capacitors impregnated with special oil, comprising long aluminum foils insulated by paper layers. All components are enclosed within a sealed welded tank, with two electrode terminals protruding externally.
Classification

Power Cabinet

4. Capacitor banks are classified based on construction and voltage:

4.1. Construction-based classification: Includes dry-type and oil-type capacitors.

Dry-type capacitors are slender cylindrical shapes, designed to be compact, lightweight, convenient for installation, replacement, and cost-effective.
Oil-type capacitors are rectangular tanks, with higher durability than dry-type capacitors, often used in high-power factor correction systems and poor-quality electrical systems.

4.2. Voltage-based classification: Includes single-phase and three-phase low voltage capacitors.

Single-phase low voltage capacitors: Operate at voltages of 230V, 250V.
Three-phase low voltage capacitors: Operate at voltages of 230V, 380V, 400V, 415V, 440V, 525V, 660V, 690V, 720V, 1100V, with the most common being 415V and 440V.

5. Technical Specifications

Complies with IEC 60439-1 standards
Insulation voltage: 1000VAC
Operating voltage: 690VAC
Pulse voltage: 12kVA
Frequency: 50Hz
Short circuit current: 50 kA/1s
Material: 1.5 – 2.5mm steel plate
Protective surface: Powder coating
Standard color: RAL
Standard dimensions: H2200 x W1000 x D1000…

6. Testing

Testing of the power factor correction capacitor bank cabinet in the production process is a mandatory step and must comply with strict requirements in current electrical testing regulations. This standard process is implemented by Vintec Group for all products before shipment to customers.
The power factor correction capacitor bank is a crucial component in industrial electrical systems. Therefore, it must undergo thorough testing before operation. This is a critical step to ensure the entire electrical system functions smoothly. Vintec Group has invested in a modern transformer laboratory equipped with synchronized testing equipment from Haefely, Switzerland, to ensure absolute accuracy in testing.

Testing of the Power Factor Correction Capacitor Bank Cabinet

7. Where to Purchase?

With nearly 20 years of experience in manufacturing transformers and electrical equipment, along with professional service and on-site warranty, Vintec Group is the trusted destination for customers to make purchases.

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