Tối ưu hóa hiệu suất và hệ số công suất
A Power Capacitor is a passive electrical component that stores and releases electrical energy in AC circuits. Unlike batteries (which store DC energy), a power capacitor is designed to react rapidly to voltage changes, providing or absorbing reactive power to stabilize voltage and improve the power factor of an electrical system.
In industrial and commercial facilities, low power factor (e.g., 0.6–0.75) is mainly caused by inductive loads such as motors, transformers, and lighting ballasts. This leads to higher utility penalties, overheating of cables, and reduced system capacity. A power factor correction capacitor works by supplying leading reactive power locally, cancelling out the lagging reactive power drawn by inductive equipment. As a result, the total apparent power (kVA) decreases for the same real power (kW), lowering electricity bills and freeing up transformer capacity.
| Chức năng | Mô tả |
|---|---|
| Điều chỉnh hệ số công suất | Raises PF from 0.6–0.8 to ≥0.95, eliminating penalty charges. |
| Ổn định điện áp | Reduces voltage drop during heavy load starting. |
| Harmonic Filtering (with detuned reactors) | Protects equipment from current distortions. |
| Tiết kiệm năng lượng | Lowers I²R losses in cables and transformers by 10–20%. |
This table helps engineers and procurement teams quickly match the right low voltage power capacitor or high voltage power capacitor to their system requirements.
| Tham số | Low Voltage Series (≤1kV) | High Voltage Series (1kV – 35kV) |
|---|---|---|
| Điện áp định mức | 230V, 400V, 690V, 1100V | 3,3 kV, 6,6 kV, 11 kV, 33 kV |
| Phạm vi công suất | 1 – 100 kvar | 50 – 2000 kvar |
| Mất mát điện môi (tan δ) | ≤0.15 W/kvar | ≤0,20 W/kvar |
| Khả năng chịu quá tải | 1.5× rated current (continuous) | 1.3× rated current (continuous) |
| Điện trở xả | Built-in, discharge to ≤50V in 1 min | External, ≤75V in 5 min |
| Tiêu chuẩn | IEC 60831, UL 810, CE | IEC 60871, CE, ISO9001 |
| Tuổi thọ thông thường | 120,000 hours | 150,000 hours |
| Note: All units feature self-healing technology, overpressure separation protection, and dry or semi-dry biodegradable fillers. | ||
Where Our Power Factor Correction Capacitor Delivers Proven Results
A power factor correction capacitor is not a one-size-fits-all device. Below are typical scenarios where our power capacitor reduces reactive energy penalties, improves voltage stability, and lowers harmonic distortion.
Our power capacitor uses high-grade polypropylene film with low loss and self-healing technology. Micro-breakdowns are instantly isolated, preventing catastrophic failure and extending service life to over 120,000 hours.
Each low voltage power capacitor features a patented internal overpressure disconnector. If internal pressure rises abnormally, the unit safely disconnects from the circuit – no explosion, no fire, no oil leakage.
Every power factor correction capacitor is subjected to a 72-hour burn-in at 1.2× rated voltage before shipment. Capacitance tolerance, dielectric loss, and thermal stability are individually recorded and traceable.
From 230V to 35kV, we manufacture both low voltage power capacitor and high voltage power capacitor with non‑standard ratings. MOQ flexible for OEM projects – your specifications, our fast turnaround.
ISO9001, CE, IEC 60831/60871, and National High-Tech Enterprise Certificate. Our power capacitor series is trusted by utilities and industrial plants in over 40 countries.
We stand behind our products. Extended warranty up to 8 years available. Our engineers provide free sizing assistance, harmonic analysis, and on-site troubleshooting – before and after the sale.
Một nhà sản xuất tụ điện công suất hàng đầu với hơn 25 năm kinh nghiệm sẵn sàng giải đáp mọi thắc mắc của quý khách — bao gồm các vấn đề liên quan đến sản phẩm, câu hỏi về kinh doanh hoặc các vấn đề liên quan đến dịch vụ.
Vẫn còn thắc mắc? Chúng tôi luôn sẵn sàng hỗ trợ bạn
Bạn chưa tìm thấy thứ mình cần?
Liên hệ với chúng tôi bất cứ lúc nào
A low voltage power capacitor is designed for systems ≤1kV (e.g., 400V industrial panels), while a high voltage power capacitor operates at 1kV to 35kV, typically used in utility substations or large MV motor compensation. Their internal dielectric, terminal insulation, and discharge resistors differ accordingly.
You need three pieces of data:
Average power factor (from utility bill)
Target power factor (usually 0.95–0.98)
Monthly active energy (kWh) and reactive energy (kVARh)
Use the formula: Required kVAR = Active Power (kW) × (tanφ₁ – tanφ₂). Or simply send us 30 days of load data – we will calculate it for free.
Standard capacitors may overheat under harmonics. You need a detuned power factor correction capacitor with a series reactor (typically 7% or 14%). Our harmonic‑rated series is marked “HD” and includes over‑temperature protection.
Our power capacitor units are designed for 120,000–150,000 hours (over 15 years) at rated voltage and ≤45°C ambient. End‑of‑life signs include capacitance loss >10% or visible bulging – we offer free capacitance testing kits for bulk orders.
Yes. Custom voltages (e.g., 480V, 525V, 690V) and non‑standard kVAR steps are available with a minimum order quantity. Contact us with your specification sheet for a fast quotation.
Hãy liên hệ với chúng tôi, chúng tôi sẽ đáp ứng mọi nhu cầu của bạn.
Hơn 30 năm cống hiến không ngừng,
Thúc đẩy sự phát triển, nâng cao chất lượng cuộc sống.
