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Blog

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Retrofitting Online DGA on an Energized Transformer: A Practical Field Guide

August 22, 2026

Retrofit online DGA on an energized transformer: closed-loop oil circuit, no oil consumption or flow disturbance, live-install safety, and a 1-3 month trial.

Industrial Transformer DGA: Protecting Steel, Petrochemical & Data Center Power

August 22, 2026

Industrial main transformers face outage losses far above asset value. Learn how online DGA and managed monitoring protect continuous production.

Renewable Energy Substation DGA: Monitoring Wind, Solar & Storage Step-Up Stations

August 22, 2026

Renewable energy substation DGA for wind, solar, and storage step-up units at unmanned sites: no-consumable L-PAS with MODBUS, 104, MQTT, and cloud.

DGA Monitoring at Nuclear Power Plants: Reliability, Traceability, Integration

August 22, 2026

Nuclear power plant DGA must meet QA, metrological traceability, and integration needs. Learn how online DGA complements periodic offline sampling.

Hydropower Transformer DGA: Cost-Effective Monitoring Across Multiple GSUs

August 22, 2026

Hydropower transformer DGA monitors multiple GSUs cost-effectively: one-to-many shared-analyzer economics, cross-contamination control, and flush timing.

HVDC Converter Transformer DGA: Monitoring Under DC Bias and Load Stress

August 22, 2026

HVDC converter transformer DGA under DC bias, harmonics, and load stress: IEC 61850 integration, safety-code compliance, and EMI-tolerant L-PAS.

DGA Monitoring for 1000 kV UHV Transformers: Catching Discharge Faults at the ppm Level

August 22, 2026

1000 kV UHV transformer DGA catches discharge faults at ppm level. Learn why sub-ppm acetylene detection limits, EMC tolerance, and fiber-optic links matter.

Cybersecurity for Substation Monitoring: IEC 62443 in Practice

August 21, 2026

IEC 62443 in practice for online DGA: zones and conduits, least privilege, TLS encryption, firmware signing, audit logging, and data governance that preserves trends.

DGA Monitor Communication Protocols: MODBUS, IEC 61850, IEC 104, DNP3 & MQTT

August 21, 2026

Choose the right DGA monitor communication protocol for each substation scenario: MODBUS RTU/TCP, IEC 61850 MMS/GOOSE, IEC 104, DNP3.0, RS485 and MQTT.

T63 Response Time Explained: How Fast an Online DGA Monitor Sees a Fault

August 21, 2026

T63 response time tells you how fast an online DGA monitor sees a fault. Learn what sets it, how equilibration time differs from measurement cycle, and when fast matters.

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PAS DGA

Precision dissolved gas analysis monitors for power transformers. Manufactured by Shenzhen Feso Automation Technology Co., Ltd, Shenzhen, China. International sales by VA Technology Co., Ltd, Hong Kong. ISO 9001 certified.

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