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CSA.304 Transformer Oil Corrosive Sulphur Analyzer

The CSA.304 Transformer Oil Corrosive Sulphur Analyser is designed in accordance with SH/T0304-1999 – Electrical Insulating Oil Corrosive Sulphur Test Method – and supports analysis per ASTM D1275-15.

It is used for qualitative determination of corrosive sulphur in transformer oil by detecting both free sulphur and corrosive sulphur impurities. These contaminants can cause significant damage when transformer oil contacts copper or other reactive metals.

The CSA.304 ensures reliable classification of transformer oil quality by replicating corrosive conditions and comparing results against copper strip corrosion standards.

Key Features

  • Detects free sulphur and corrosive sulphur content in transformer oils

  • Accurate microcomputer-controlled heating with precision monitoring

  • Equipped with copper corrosion detector for reliable classification (optional)

  • Stainless steel interior with reinforced insulation ensures durability and safety

  • Large double-glass window for real-time observation

  • Vertical forced convection ensures even heating throughout chamber

  • Automatic protection functions: over-temperature, fan stop switch, and safety cut-off

Technical Specifications

  • Temperature range: RT +10℃ to 200℃

  • Constant temperature fluctuation: ±1℃

  • Temperature resolution: 0.1℃

  • Heating rate: 1.0–3.0℃/min

  • Timing range: 1–9999 min

  • Electrolytic copper: purity 99.9%, thickness 0.125–0.250 mm

  • Power supply: AC 220V, 50Hz

  • Workroom size: 340 × 270 × 325 mm

  • Overall size: 630 × 515 × 505 mm

  • Construction: Inner chamber of mirror stainless steel (argon arc welded), outer shell of high-quality steel plate with plastic spray coating

  • Observation window: Double tempered glass for monitoring workroom status

  • Type: Vertical forced convection for uniform temperature distribution

  • Temperature controller: Digital display, microcomputer-controlled (precision 0.1℃)

  • Safety: Independent temperature limiting alarm system with auto cut-off

  • Insulation system: High-performance glass fibre and high-temperature-resistant materials to reduce heat conduction

  • Hot air circulation system: Imported fans and advanced duct design for stable high-temperature operation

Measuring Functions

  • Determination of corrosive sulphur index

  • Transformer oil quality control

  • Sulphur content detection

  • Classification of oils as corrosive or non-corrosive in compliance with GB/T 5096 standards

Oil Classification Reference

  • Corrosive: Specimen shows black, dark brown, graphite-like, lacquered black, or exfoliated appearance

  • Non-Corrosive: Specimen shows orange, red, purple, blue, multi-colour patterns (e.g., red/green "Blue Peacock"), brass or gold shades, but no greying

  • Non-corrosive: Equivalent to Grades 1–3 in GB/T 5096

  • Corrosive: Equivalent to Grade 4 in GB/T 5096

Note: For improved accuracy, classification can be confirmed using an imported copper corrosion standard colour card.

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