R28-R/B red and black color is anti tracking mastic, used to seal and insulate lugs in MV terminations, as well as other metal parts in joints and terminations, ensures a watertight seal, excellent electrical properties.
| Property |
Typical data |
| Tensile strength (Mpa) |
0.5 |
| Elongation at break (%) |
900 |
| Volume resistivity (Ω/mm) |
1×1015 |
| Dielectric strength |
15 |
R28-Y yellow color is stress control, void filling mastic, used at the connectors and screen cut on MV cable when installing joints or terminations, oil resistant, suitable for paper insulated cables.
| Property |
Typical data |
| Tensile strength (Mpa) |
≥1 |
| Elongation at break (%) |
900 |
| Volume resistivity (Ω/mm) |
1×1011 |
| Dielectric strength |
15 |
R28-W white color is butyl rubber self amalgamating sealing mastic, UV resistant, excellent electrical properties, creates a perfectly watertight seal around connectors and armouring.
| Property |
Typical data |
| Tensile strength (Mpa) |
0.5 |
| Elongation at break (%) |
900 |
| Volume resistivity (Ω/mm) |
1×1014 |
| Dielectric strength |
15 |
Founded in 1985. Its products cover power transmission and distribution material products such as power fittings, cable accessories, insulators, copper and aluminum materials, and also transmission and distribution equipment products such as circuit breakers on primary and secondary fusion columns, disconnectors, fuses, and arresters. it is a power transmission and distribution system service provider integrating R&D, manufacturing, sales and services. The company is shortlisted as a Class A supplier of State Grid, China Southern Power Grid, and Inner Mongolia Electric Power.
Yonggu Electric Power Fittings Laboratory is a nationally accredited laboratory by CNAS. The scope of accreditation involves nearly 80 national standards and 110 testing items, covering nine categories of power fittings. The laboratory has a total area of more than 3,500 square meters, and has introduced German Spectrometer, FEI scanning electron microscope, X-ray digital imaging detection system, optical image detection system, 600kN horizontal tensile testing machine, 300kN vertical tensile testing machine, microcomputer digital display automatic sample injection analyzer, 4000A temperature rise thermal cycle test equipment, 50kV AC high voltage testing machine, metallographic microscope and handheld XRF analyzer, Fourier transform infrared spectrometer and a series of advanced detection equipment.
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