Single-Phase Harmonic Filters Selection Guide: Technical Criteria & Application Standards
Single-Phase Harmonic Filters selection guide: technical parameters, mounting and compliance standards, and Entes, Tibcon comparison.
A single-phase harmonic filter is a single-phase filter reactor connected in series with a single-phase power capacitor to protect that step against harmonic currents and resonance. It is used in facilities with unbalanced loads where each phase is corrected separately, and in panels with single-phase nonlinear loads such as LED lighting, computers and UPS units. In this category, Tibcon and Entes models are available in step ratings such as 0.5 kVAr, 1 kVAr, 2.5 kVAr, 5 kVAr and 10 kVAr; Tibcon product names state a 7% reactor ratio. Choose the filter's kVAr value by the power expected from the step, its voltage by the voltage the step is connected to, and the reactor ratio by the dominant harmonic in the facility. Because a series reactor raises the capacitor's terminal voltage above the grid voltage, the capacitor's label rating will not be the same as the filter's kVAr value; determine the capacitor from the manufacturer's matching table. It should not be confused with a single-phase shunt reactor: a shunt reactor is connected on its own to balance a capacitive load, whereas a harmonic filter works together with a capacitor. The Single-Phase Harmonic Filters category on Welibaba includes 14 active models from leading manufacturers such as Entes, Tibcon.
Key Technical Parameters for Selecting Single-Phase Harmonic Filters
To specify the right Single-Phase Harmonic Filters model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Connection Type | Klemens | Verify against project schedule and load calculation |
| Relative Humidity | %95 Yoğunlaşmayan (DIN 40040) | Verify against project schedule and load calculation |
| Inductance | 1, 3 mH, 1, 7 mH | Verify against project schedule and load calculation |
| Current | 13, 2 A (I rms), 2, 9 A (I rms) | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Harmonic Filters.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Active Harmonic Filters, Three-Phase Harmonic Filters.
Frequently Asked Questions
What is the first parameter to check when selecting Single-Phase Harmonic Filters?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Single-Phase Harmonic Filters page to narrow down compatible series.
Which Single-Phase Harmonic Filters brands are available on Welibaba?
Welibaba currently stocks 14 active models in this category from manufacturers including Entes, Tibcon, complete with verified specifications and unit pricing.
How can I compare Single-Phase Harmonic Filters models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.