Product Description
The "Combi Unit" manufactured by Yueqing Jasco is designed and produced in strict accordance with international IEC standards. It integrates a fuse unit with a gapless zinc-oxide surge arrester, creating a pole-mounted device specifically engineered for 11kV and 33kV overhead distribution networks.
The "Combi Unit" fuse assembly comprises a silicone rubber insulator, a UV-resistant epoxy-fiberglass arc-extinguishing fuse tube, and silver-plated copper components. Upon a fault, the fuse tube automatically drops out to create a visible break, facilitating safe inspection and ensuring the safety of maintenance personnel.
The mounting bracket features a hot-dip galvanized finish and a reinforced design, enabling it to withstand high wind loads and ensuring long-term mechanical durability; the support bracket utilizes a structure consisting of a fiberglass core rod encapsulated in silicone rubber, offering exceptional mechanical bending strength. The "Combi Unit" remains unaffected by harsh outdoor environments - such as those with salt spray, high temperatures, high humidity, or heavy pollution - and offers customizable parameters to suit specific application scenarios, including high-altitude installations.
This integrated system replaces traditional discrete components, thereby simplifying transformer installation design and providing comprehensive protection for pole-mounted distribution transformers against short circuits, overloads, lightning strikes, and voltage surges. The fuse-arrester combination unit undergoes rigorous factory testing and comes with third-party test reports that meet the requirements for international tenders and on-site acceptance.
Technical Data Sheet
|
Item |
11 (11 kV Combi Unit) |
33 (33 kV Combi Unit) |
|
Nominal System Voltage |
11 kV |
33 kV |
|
Rated Equipment Voltage |
12 kV |
36 kV |
|
Rated Frequency |
50 Hz |
50 Hz |
|
Rated Fuse Current |
100 A |
100 A |
|
Rated Short‑circuit Breaking Current of Fuse |
8 kA |
Customized as per client's requirement |
|
MCOV of Surge Arrester |
9.6 kV |
Customized according to system requirement |
|
Creepage Distance of Post Insulator |
≥384 mm |
≥1152 mm |
|
Lightning Impulse Withstand Voltage |
95 kV |
≥200 kV |
|
Bending Failure Load of Post Insulator |
≥5 kN |
≥5 kN |
|
Thickness of Galvanized Coating for Support Frame |
70‑100 μm |
70‑100 μm |
|
Maximum Applicable Altitude |
1800 m |
1800 m |
|
Applicable Pollution Class |
Up to Class IV |
Up to Class IV |
|
Design Service Life |
20‑30 years |
20‑30 years |
|
Mounting Method |
Pole‑mounted |
Pole‑mounted |
|
Key Configuration |
Drop‑out fuse + ZnO arrester, mechanical interlock, arrester disconnector & fault indicator, silver‑plated copper contacts |
Drop‑out fuse + ZnO arrester, mechanical interlock, arrester disconnector & fault indicator, silver‑plated copper contacts |
|
Applicable Standards |
IEC 60099‑4, IEC 60282‑2, IEC 60815, IEC 60076, ISO 1461 |
IEC 60099‑4, IEC 60282‑2, IEC 60815, IEC 60076, ISO 1461 |
Product Advantage
The integrated design saves space, reduces installation and implementation time, and lowers costs.
Dual protection: Features integrated protection against short circuits, overloads, and overcurrents, ensuring comprehensive protection for distribution transformers and minimizing the risk of equipment failure.
Utilizes silver-plated contacts, silicone rubber insulation, and corrosion-resistant metal components; offers excellent weather and corrosion resistance, ensuring stable operation and reducing long-term maintenance costs.
Suitable for environments with Pollution Level IV and altitudes up to 1,800 meters; customized solutions are available for higher altitudes and specific rated current requirements.
Factory-direct supply options include neutral packaging and custom branding; supports consolidated shipping with other power distribution equipment.
Operating Environment Conditions
1. Ambient temperature: -40°C to +40°C
2. Altitude: ≤1800m (customizable for higher altitudes)
3. Maximum wind speed: ≤35m/s
4. Pollution level: Up to Class IV
5. Free from severe vibration, explosive hazards, and highly corrosive media.
FAQ
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