Description

Harmonic Mitigation Transformers (Delta-Zig-zag or Wye-Zig-Zag)

Features:

• JVC Electric Inc. Harmonic Mitigating Tansformers actually treat the triplen harmonics in the secondary windings; reduce supply voltage flat topping caused by non-linear loads.
• Electrostatically shielded for cleaner power with 0° phase shift and -30° phase shift.
• Improved overall power factor of supply system.
• Primary taps for voltage adjustment.
• Suitable for K-factor loads.
• 220°C insulation system, 150°C temperature rise.
• Superior energy efficiency.
• Copper conductor construction.

What are triplen harmonics?
Triplen harmonics are harmonics that are multiplies of the number three. For example, triplen harmonics include the 3rd, 9th, 15th, etc. harmonic. Each of these harmonics is a multiple of three and therefore called a triplen harmonic. Triplen harmonics will all be filtered by a zig zag winding connection.
What does 0° phase shift and -30° phase shift mean?
The phase shiftment is the electrical angle between the voltage (or current) at the secondary side of the transformer with respect the primary side, at same phase. Any deeper explanation will begin to cause drowsiness, but here is what you need to know about phase shiftment. GE offers two versions of harmonic mitigating and ultraefficient harmonic mitigating transformers: 0° phase shift and -30° phase shift.
Load Type Characteristic harmonics
Single phase electronic loads such as PCs 3, 5, 7, 9, 11, 13, 15, 17 Three phase electronic loads such as small variable frequency drives (Six pulse) 5, 7, 11, 13, 17 Three phase electronic loads such as large variable frequency drives (Twelve pulse) 11, 13 Transformer saturation 3, 5, 7 Electric arc furnaces and welders 5, 7 Saturable core reactors 3, 5, 7

Detailed drawings are available upon request.
Email:sales@jvcelectric.com
Contact No: 416-285-7555