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Vacuum Pressure Impregnated Transformer
Brand: WISHPOWER
Standard: GB/T10228-1997、GB6450-1986、IEC726
High Voltage: 35,10(10.5,6.3,6)kV
Low Voltage: 0.4kV
Vector Group: Yyn0, Dyn11
Insulation Level: LI75AC35/AC3 LI170AC70/AC3
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DESCRIPTION

Specification

Rated capacity (kVA) Voltage Combination (kV) Connection Symbol Level 1 Energy Efficiency Loss Type 13 (W) Level 2 Energy Efficiency Loss Type 13 (W) Level 3 Energy Efficiency Loss Type 13 (W) Loss Type 11 (W) No-Load Current (%) Impedance (%) Gauge (mm)
HV LV No Load On Load No Load On Load No Load On Load No Load On Load
30 6 6.3 6.6 10 11±5% or ±2*2.5% 0.4 Dyn11 or Yyn0 105 640 130 640 150 710 205 780 2 4 400×300
50 155 900 185 900 215 1000 285 1120 1.8 400×350
80 210 1240 250 1240 295 1380 380 1550 1.6 400×315
100 230 1415 270 1415 320 1570 410 1800 1.6 550×820
125 270 1665 320 1665 375 1850 470 2100 4.2 550×820
160 310 1915 365 1915 430 2130 550 2450 4.2 550×820
200 360 2275 420 2275 495 2530 650 2850 4 550×820
250 415 2485 490 2485 575 2760 740 3250 4 660×820
315 510 3125 600 3125 705 3470 880 3900 1 660×820
400 570 3590 665 3590 785 3990 1000 4600 0.9 660×820
500 670 4390 790 4390 930 4880 1180 5470 0.9 660×820
630 775 5290 910 5290 1070 5880 1350 6500 0.8 660×820
630 750 5365 885 5365 1040 5960 1300 6700 0.8 6 660×820
800 875 6265 1035 6265 1215 6960 1540 7800 0.8 820×820
1000 1020 7315 1205 7315 1415 8130 1750 9250 0.8 820×820
1250 1205 8720 1420 8720 1670 9690 2030 11000 0.7 820×1020
1600 1415 10555 1665 10555 1960 11730 2700 13500 0.6 820×1020
2000 1760 13005 2075 13005 2440 14450 3000 16200 0.5 1070×1070
2500 2080 15445 2450 15445 2880 17170 3500 19500 0.5 1070×1070

The table above is just one of our product parameters. If you want more information, please get in touch with info@wishpower.net

 

What is the Vacuum Pressure Impregnated Transformer?

Vacuum Pressure Impregnated (VPI) Transformer stands as an electrical transformer design that receives thorough manufacturing treatment to boost its insulation abilities and total operational performance. Transformer windings receive insulation resin treatment through an application of vacuum pressure in the VPI manufacturing process. The impregnation of windings occurs while under vacuum to eliminate air and moisture which guarantees void-free and contaminant-free insulation. The resin penetrates every gap of insulation material through pressurized force after the vacuum stage which results in solid uniform coverage. The transformer’s dielectric strength along with resistance to electrical stresses and durability rate witness substantial enhancement through this method. Through VPI the process successfully minimizes the generation of damaging partial discharges. The construction method produces transformers that exhibit superior heat dissipation and enhanced reliability properties as well as better protection against moisture and pollutants in environmental conditions.

 

Why Vacuum Pressure Impregnated?

  1. Improved Insulation Quality:

Vacuum Pressure Impregnated(VPI) application completes the saturation of insulating resin through all windings which fills every air space between coils. A securely bound insulation layer forms due to VPI because it creates uniformity which helps maintain reliable electrical performance and prevents breakdowns.

  1. Enhanced Dielectric Strength:

The transformer’s dielectric strength substantially increases when windings have their moisture along with air removed thoroughly and fill their spaces with resin. The insulation provides the transformer with a better ability to handle elevated voltage levels together with intense electrical loads while staying safe.

  1. Prevention of Partial Discharges:

Partial discharges occur in two ways during transformer operation: first in air gaps within the winding insulation and second when water vapor forms between these gaps. Both degrade the transformer insulation and shorten its operational life. The insulation layer becomes void-free during VPI processing thereby eliminating all associated risks.

  1. Resistance to Environmental Factors:

Transformers that receive VPI become more resistant to environmental elements such as moisture and dust along with pollutants. The transformer’s durability together with reliability increases due to these enhancements especially in situations where transformers experience extreme climate changes or corrosive substances.

  1. Better Thermal Performance:

VPI resin operates with enhanced thermal conductivity than traditional insulation materials used in the industry. The transformer can eliminate heat more effectively through this process which stops it from overheating while also reducing failure risk from high operating temperatures.

  1. Longer Transformer Life:

The lifetime of transformers extends due to improved insulation as well as enhanced dielectric strength and environmental factor resistance together. VPI-treatment of transformers creates systems that fail less frequently which results in lower maintenance expenses and longer operational duration.

 

Application

  1. Power Generation Plants:

VPI transformers operate in power generation stations through their capacity to deliver stability during high electrical load conditions. The combination of enhanced durability characteristics enables VPI-treated transformers to work effectively for generator step-up transformers since power output reliability is crucial.

  1. Oil and Gas Industry:

Different equipment needs electrical power in hazardous areas of oil and gas facilities through this transformer type. These transformers provide exceptional resistance to moisture and survive corrosive elements as well as severe environmental conditions so they serve perfectly in offshore operations and isolated energy locations.

  1. Renewable Energy Systems:

Such transformers serve important functions within renewable power systems which include wind farms together with solar power plants that need protection against rough outdoor conditions. Long-term operation together with reduced maintenance needs results from the transformer’s ability to fight moisture and environmental pollutants.

  1. Railway Systems:

These transformers function in traction substations along with railway infrastructure because reliability requirements guarantee uninterrupted train power. These transformers excel when exposed to vibrations together with extremes in environmental conditions and heavy electrical load requirements since they maintain superb operational uptime for rail systems.

  1. Industrial Facilities and Manufacturing Plants:

Largest manufacturing plants use VPI transformers for supplying electric power to various operational equipment that needs steady access to electricity. The improved heat resistance of VPI transformers along with better insulation capabilities enables them to reduce downtime suffered through electrical breakdowns.

  1. Mining Operations:

The application of Vacuum Pressure Impregnated Transformers ensures power supply services to equipment working in soil mines through tunnels and shafts due to their ability to protect against environmental damage and mechanical stress. These transformers demonstrate dependable performance together with sturdy design which enables their use in inaccessible mining areas.

 

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