--- title: "Redeco: ATG power supply module service | Citia" description: "The team repaired the power supply of an Endress+Hauser ATG that had gone completely dead after a voltage surge from a lightning strike." url: https://citia-engineering.com/en/projects/redeco-atg-power-supply-module-service language: en updated: 2026-08-04 type: project site: Citia Engineering Indonesia --- # Redeco: ATG power supply module service The team repaired the power supply of an Endress+Hauser ATG that had gone completely dead after a voltage surge from a lightning strike. Inspection showed a blown fuse and a damaged varistor. | Field | Value | | --- | --- | | Year | 2025 | | Location | Cilegon, Banten | | Status | Finished | | Work types | Instrumentation | | Updated | 2026-08-04 | ## About this work ### Power supply repair for Endress+Hauser ATG #### Overview This work restored the **power supply of an Endress+Hauser Automatic Tank Gauge (ATG)** that went completely dead after a lightning strike. With the power supply down, the ATG unit received no power, so tank monitoring could not work normally. The scope covered inspecting the power supply circuit for damage, replacing the damaged protection components, function testing and reinstalling the unit. #### Challenges The inspection found that the voltage surge had damaged several protection components in the power supply circuit: - The fuse was blown, so the power supply to the circuit stopped. - The varistor was damaged by the voltage surge. - The power supply was completely dead and had to be checked to confirm no further damage to other components. - The repair had to make sure the power supply output voltage was stable again and safe for the ATG to use. #### Solutions The repair steps were: 1. Visual inspection and electrical checks of the power supply circuit. 2. Replaced the blown fuse with a new fuse to the circuit specification. 3. Replaced the varistor damaged by the voltage surge. 4. Checked the tracks and other components to confirm there was no short circuit or further damage. 5. Tested the input and output voltage of the power supply. 6. Function tested the unit and reinstalled the power supply in the ATG system. After the fuse and varistor were replaced and testing was complete, the power supply worked again and supplied power to the ATG. #### Lessons learned This damage shows that a lightning strike or voltage surge can make the protection components of a power supply fail and leave the ATG completely dead. The fuse and varistor limit the effect of a fault before it reaches the main circuit. To reduce the risk of repeat damage, check the grounding, lightning protection and surge protection on both the power and communication lines. Regular checks of the power supply and its protection components are also needed, so signs of damage are found before the ATG system stops working. ## Contact - Company: PT Citia Engineering Indonesia - Email: services@citiaengineering.com - Telephone: +62 21 278 20286 - Office: Jl. Kaimun Jaya No. 1, Cilandak Barat, Jakarta Selatan, DKI Jakarta 12430, Indonesia [Contact Citia](https://citia-engineering.com/en/contact.md) ## Structured data (JSON-LD) ```json { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://citia-engineering.com/#organization", "name": "Citia Engineering Indonesia", "legalName": "PT Citia Engineering Indonesia", "alternateName": "Citia", "url": "https://citia-engineering.com", "logo": { "@type": "ImageObject", "url": "https://citia-engineering.com/media/citia-logo.png", "width": 950, "height": 328 }, "description": "Citia is an engineering and system integration company in Jakarta. 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