Maintenance for medium voltage systems

Maintenance of inverter system for medium voltage motor at POSCO YAMATO VINA factory 8/2025

With the goal of ensuring stable and reliable system operation, maintenance, inspection and replacement of spare parts are inevitable. With our professional team, we have provided this service many times for POSCO YAMATO VINA factory.

Maintenance work content

• Panel & Electrical Check

Cleaning and inspection inside control panels

Electrical examination and functional testing

• Drive System Maintenance

Visual inspection and cleaning of inverter stacks (sample pull-out)

Measurement of snubber capacitor capacity

• Component Replacement

Replacement of cooling fans, power supply units, air filters

Replacement of control circuit fuses and backup electrolytic capacitors

• Cooling System Inspection

Check pure water cooling unit: flow, conductivity, water level, and overall condition

• Trial Run

Independent motor running test

General trial run to confirm system readiness

A few words about our services

Medium voltage equipment is usually designed to operate for 15 ~ 20 years, and to ensure stability and reliability during that period, maintenance and inspection are mandatory, some parts may still operate normally without damage, however it has expired and needs to be replaced so that the whole system can be stable and reliable, at THIEN TRUONG with a team of experienced engineers, we will base on the actual situation and the wishes of the customer, and give the most suitable maintenance plan, the trust of a big partner like POSCO YAMATO when cooperating with us for many years for maintenance services for their system is the clearest proof, if you need any advice, do not hesitate to contact us or leave your information