1. Core detection function

Used for qualitative/quantitative detection of corrosive sulfur, free sulfur, and active sulfide content in mineral insulating oils such as transformer oil and instrument transformer oil. According to standards such as SH/T 0304, ASTM D1275, and IEC 62535, by simulating equipment operating temperature and environment, and conducting copper strip/copper wire corrosion tests, the corrosion risk of the oil to copper windings and metal components is determined.

2. Equipment safety protection

Corrosive sulfur reacts with copper to form cuprous sulfide, which deposits on the surface of windings and insulating paper, leading to insulation aging, winding short circuits, poor contact, localized overheating, and even sudden transformer failures. The instrument detects potential hazards in advance, avoiding unplanned power outages and major equipment damage, and ensuring the long-term safe operation of oil-filled electrical equipment.

3. Oil quality control

New oil inspection: Inspect whether the newly purchased insulating oil contains corrosive sulfur, and prevent the use of unqualified oil products.

Operating oil monitoring: Regularly sample oil samples in service, track changes in corrosive sulfur, assess the degree of oil quality deterioration, and guide oil filtering, oil changing, or the addition of corrosion inhibitors.

Fault tracing: After a winding corrosion fault occurs, the cause of sulfur corrosion is traced through oil sample testing, providing a basis for maintenance and anti-corrosion plans.

4. Standard compliance and operation and maintenance support

The test data meets the requirements of the power industry's handover and preventive testing procedures, and is an essential testing item for transformer grid access acceptance, regular maintenance, and condition assessment. It provides objective and repeatable oil quality safety data for power companies, operation and maintenance units, and equipment manufacturers, supporting equipment lifecycle management.