Products

Synthetic MIDEL 7131 Transformer Oil Purification Machine Application

It is specifically engineered to process and restore the quality of synthetic ester insulating fluids used in modern power and distribution transformers. Unlike conventional mineral oil purification systems, this equipment is designed to handle the unique physical and chemical characteristics of MIDEL 7131 synthetic ester fluid, ensuring maximum dielectric performance while preserving the fluid’s fire-safe and biodegradable properties. MIDEL 7131 is widely used because of its high fire point, excellent moisture tolerance, low-temperature performance, and oxidation stability, making it suitable for applications including indoor substations, renewable energy systems, railways, offshore platforms, and transformers operating above 400 kV

HOPU Ester Transformer Oil Flushing and Purification Skid

The purification system employs advanced vacuum dehydration, multi-stage precision filtration, degassing, and particulate removal technologies to effectively eliminate dissolved water, free water, gases, solid contaminants, and oxidation by-products without altering the chemical composition of the synthetic ester. By maintaining low moisture content and high dielectric strength, the machine helps extend transformer insulation life, improve operational reliability, reduce failure risks, and minimize maintenance costs.

HOPU ester transformer oil purifier Key Features

* Specifically designed for Synthetic MIDEL 7131 ester transformer fluid

* High-efficiency vacuum dehydration and degassing technology

* Multi-stage precision filtration for micron-level particle removal

* Preserves ester fluid properties and dielectric performance

* PLC automatic control with optional IoT remote monitoring

* Low operating cost, energy-efficient design, and continuous online operation

* Suitable for new transformer oil treatment, oil regeneration, and retrofilling 

This synthetic Midel Ester 7131 transformer oil purification machine  is a professional, high-precision fluid treatment equipment specially developed for Shell MIDEL 7131 synthetic ester dielectric fluid, complying with IEC 61099 and ASTM D8240 international industry standards. Differentiated from conventional mineral transformer oil purifiers, this device is optimized for the unique physical and chemical properties of Midel 7131 synthetic ester oil—including ultra-high fire point (>300℃), excellent oxidation stability, low-temperature fluidity (pour point -56℃), and biodegradable characteristics. It is dedicated to removing moisture, dissolved gases, particulate impurities, acidic substances and aging metabolites from contaminated Midel 7131 ester oil, efficiently restoring the dielectric strength, insulation performance and operational stability of the synthetic ester fluid, and meeting the strict fluid purification requirements of high-voltage power transformers up to 433kV and above.