TRANFOVIA(NINGBO) EQUIPMENT TECHNOLOGY CO.,LTD

Transformer Vapour Phase Drying Equipment

Vapour phase drying equipment for UHV transformers, mutual inductors and capacitor bushings, with VPD-250 to VPD-600 power configurations and process traceability.

Vapour Phase Drying Equipment for Power Transformers

The TRANFOVIA Vapour Phase Drying Equipment is designed for insulation drying of ultra-high-voltage transformers, mutual inductors and capacitor bushings. A vapour-phase working medium provides high latent heat for uniform, thorough drying, while an external evaporator can support independent distillation and complete process records support production traceability.

Applications

This Vapour Phase Drying System is intended for manufacturers processing large high-voltage electrical products where the insulation system requires uniform, thorough drying. It is particularly aligned with ultra-high-voltage transformer production, mutual inductors and capacitor bushings. Buyers should select the system around product dimensions, drying-tank layout, evaporator and condenser power level, distillation arrangement and process-recording requirements.

Main Features

  • High latent-heat working medium

Vapour is used as the heat-transfer medium, giving the process a high heat-carrying capability for transformer insulation drying.

  • Uniform and thorough drying

The process is designed for uniform drying across the product, supporting shorter drying cycles and higher process efficiency.

  • Cleaning effect during processing

The vapour phase itself has cleaning properties and can be used when secondary products require treatment.

  • Independent distillation option

An external evaporator enables independent distillation, separating this system from simpler hot-air vacuum drying arrangements.

  • Traceable production process

The system records production process parameters for later review and traceability.

VPD Model Range and Power Configuration

Model Evaporator Main Condenser Drying Tank
VPD-250 250 kW 200 kW Square horizontal; size customized
VPD-300 300 kW 250 kW Square horizontal; size customized
VPD-400 400 kW 300 kW Square horizontal; size customized
VPD-500 500 kW 400 kW Square horizontal; size customized
VPD-600 600 kW 500 kW Square horizontal; size customized

The listed tank uses a square horizontal structure with a stated -0.1 to 0 MPa value; final tank dimensions are project-specific.

Vapour Phase Drying vs. Vacuum Drying Equipment

Selection Point Vapour Phase Drying Vacuum Drying Equipment
Heating approach Vapour working medium with high latent heat Hot-air circulation; optional enhanced heating plates
Typical product focus UHV transformers, mutual inductors, capacitor bushings Oil-immersed transformers, capacitors, motors
Distinctive option External evaporator for independent distillation Optional micro-water measurement and terahertz heating plates
Choose when A dedicated VPD process is required A general transformer vacuum drying plant is required

Choose vapour phase drying when the project requires vapour-phase heat transfer, independent distillation and a VPD power configuration matched to large high-voltage products. Choose the separate transformer vacuum drying system when the process is based on hot-air circulation, optional water-output monitoring or enhanced heating plates.

FAQ

  1. What is vapour phase drying equipment used for?

It is used for drying insulation systems in ultra-high-voltage transformers, mutual inductors and capacitor bushings using vapour as the working medium.

  1. What is the difference between VPD equipment and a vacuum drying plant?

VPD uses a vapour-phase working medium and can include an external evaporator for independent distillation. The separate vacuum drying equipment uses hot-air circulation and optional moisture monitoring or enhanced heating plates.

  1. Which VPD models are available?

The listed range includes VPD-250, VPD-300, VPD-400, VPD-500 and VPD-600, with evaporator power from 250 to 600 kW.

  1. Is the drying tank size fixed?

No. The tank is listed as a square horizontal structure and its size is customized to the customer project.

  1. What information is needed for a quotation?

Provide product type, maximum dimensions, loading quantity, required cycle, preferred VPD power level, plant utilities, tank layout and traceability requirements.

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