HTLS Overhead Conductor Greases (High-Temperature Low-Sag) are specialized, high-performance, non-conductive filling/lubricating compounds designed exclusively for HTLS overhead power conductors (e.g., ACSS, Gap-type, ACCC, ACCR). They operate at far higher temperatures than standard ACSR/OPGW greases and enable HTLS conductors to run at 150–250°C with minimal sag, while protecting internal components.
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Core Purpose & Key Functions
- Extreme high-temperature stability: No dripping, oil separation, or hardening at 150–250°C (critical for HTLS’s high-current operation).
- Galvanic & corrosion protection: Seals moisture/salt/industrial pollutants; prevents corrosion between dissimilar metals (aluminum alloy, steel, composite cores).
- Inter-strand lubrication & anti-wear: Reduces fretting, vibration fatigue, and strand damage under wind/ice/thermal cycling.
- Gap filling & water blocking: Fills inter-strand gaps and (in Gap-type HTLS) the central thermal expansion gap to block water and stabilize structure.
- Thermal & oxidative resistance: Resists breakdown under long-term high heat and UV exposure.
- Electrical compatibility: Non-conductive, does not affect current-carrying or grounding performance.
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Features and Benefits
》Minimizes oil bleed during normal operation and post – fault conditions of transmission lines.
》Provides superior corrosion protection for conductors in diverse environments, including coastal high – salt zones, heavy industrial pollution areas, and high – humidity and heat regions.
》Tailored formulations cover full temperature range from ambient to 240°C for transmission line operations.
》High – temperature specialized synthetic grease resists oil separation and stays stable under extreme heat.
》It has exceptional low – temperature stability, preventing cracking down to – 60°C.
》With outstanding oxidation resistance and anti – aging properties, it extends service life.》Complies with GB/T 36292 – 2018, BS EN 50326 – 2002, and IEC 61394 – 2011 standards.
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Technical Data
| Items | OPS20A120 | OPS40A120 | OPS20A180 | OPS40A180 | OPS60A180 | OPS40A240 |
| Description | 20A120 | 40A120 | 20A180 | 40A180 | 60A180 | 40A240 |
| Max. Temp. Rating | 120°C | 120°C | 180°C | 180°C | 180°C | 240°C |
| Min. Temp. Rating | 20°C | 40°C | 20°C | 40°C | 60°C | 40°C |
| Drop Point | >280°C | >280°C | >300°C | >300°C | >300°C | >330°C |
| Application | ACSR&OPGW | ACSR&OPGW | ACSR&OPGW | ACSR&OPGW | OPGW | HTLS |
| EN 50326 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
| IEC 61394 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
| IGB/T 36292 Compliant | Yes | Yes | Yes | Yes | Yes | Yes |
