Products
Hybrid Transformer
Case 1
Korea Airports Corporation
(Gimpo Airport)
Remove the existing active filter and replace it with a hybrid transformer as a countermeasure to reduce harmonics.
Harmonic Reduction 45.8%,
Unbalance Improv. 98.3%,
PF Improv. 4.2%
Before
High-efficiency transformer + Active Filter (1,700kVA)
After
Hybrid Transformer (1,700kVA)
| Category | Transformer | Power analysis results | ||
| Harmonics | Unbalance | PF | ||
| Before | High-efficiency Transformer | 15.3 | 11.8 | 0.95 |
| After | Hybrid Transformer | 8.3 | 0.2 | 0.99 |
| Decline rate(%) | - | 45.8 | 98.3 | 4.2 |
Case 2
Ulsan Airport
Replacement with Hybrid Transformer to reduce harmonics in aviation lights and general power facilities
Unbalance Improv. 24.5%, PF Improv. 2.4%
General power : Harmonic Reduction 50.0%,
Unbalance Improv. 67.7%, PF Improv. 2.9%
Before
High-efficiency transformer (Aviation lights & General power)
After
Hybrid Transforme (Aviation lights & General power)
| Category | Unit | Aviation lights (200kVA) | General power (750kVA) |
||||
| Before | After | Inc/Dec (%) | Before | After | Inc/Dec (%) | ||
| ITHD | % | 35.3 | 11.1 | 68.6 | 20.2 | 10.1 | 50.0 |
| Unbalance | % | 5.3 | 4.0 | 24.5 | 35.6 | 11.5 | 67.7 |
| PF | % | 90.1 | 92.3 | 2.4 | 95.5 | 98.3 | 2.9 |
Aviation lights -
Before Installation
Aviation lights -
After Installation
General power -
Before Installation
General power -
After Installation
Case 3
Korea Expressway Corporation
Installing Hybrid Transformer as a measures to reduce Harmonics in Tunnel LED Loads.
Before
High-efficiency transformer (200kVA)
After
Hybrid Transformer (200kVA)
| Category | High-efficiency transformer (Before) | Hybrid Transformer (After) | Reduction rate (%) | ||||||
| LED Dimming | LED Dimming | LED Dimming | |||||||
| 15% | 50% | 100% | 15% | 50% | 100% | 15% | 50% | 100% | |
| Real Power (kW) | 34 | 65 | 106 | 30 | 56 | 101 | 11.8 | 13.8 | 4.7 |
| PF | 0.85 | 0.95 | 0.98 | 0.90 | 0.97 | 0.99 | 5.9 | 2.1 | 1.0 |
| V_THD(%) | 1.8 | 1.5 | 1.5 | 1.5 | 1.6 | 1.4 | 16.7 | 6.7 | 6.7 |
| I_THD(%) | 17.1 | 8.3 | 5.7 | 13.9 | 7 | 3.1 | 18.7 | 15.7 | 45.6 |
| I_TDD(%) | 6.5 | 4.8 | 5.3 | 4 | 3.5 | 2.7 | 38.5 | 27.1 | 49.1 |
Case 4
Nongshim Factory
Installing Hybrid Transformer as a measures to reduce Harmonics in Inverter Load
1,500kVA : Harmonic Reduction 47.1%, Unbalance Improv. 39.4%, PF Improv. 3.2%
1,000kVA : Harmonic Reduction 58.7%, Unbalance Improv. 51.7%, PF Improv. 10.8%
Before
High-efficiency transformer (4,500kVA)
After
Hybrid Transformer (4,500kVA)
| Category | Unit | 1,500kVA | 1,000kVA | ||||
| Before | After | Rate of Change (%) | Before | After | Rate of Change (%) | ||
| V_THD | % | 1.4 | 1.1 | 21.4 | 1.3 | 1.1 | 15.4 |
| I_THD | % | 5.1 | 2.7 | 47.1 | 13.8 | 5.7 | 58.7 |
| V_Unb | % | 0.7 | 0.3 | 57.1 | 0.7 | 0.2 | 71.4 |
| I_Unb | % | 10.4 | 6.3 | 39.4 | 6.0 | 2.9 | 51.7 |
| PF | % | 86.4 | 89.2 | 3.2 | 73.3 | 81.2 | 10.8 |
Design/specification application examples
- The design application and specifications are simple, minimizing the engineer’s working time.
- We offer technical seminars and design resources to approximately 30 metropolitan-area design firms.
Application case 1
Application case 2
