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Product features
High performance of weather aging resistance
For porelain insulator, the porcelain body connects with hardware fitting by cement
pouring, we use the (por-rok)ANCHORING cement manufactured by CGM INC from
USA. This kind of cement has rapid solidification, high mechanical strength, low
expansion coefficient and superior weather resistance.
For polymer insulator, the hardware fitting crimped onto fiberglass rod, material of housing and sheds manufacture of high-temperature Vulcanized Silicone Rubber, and the insulator moulded by one piece injection molding. It has good sealing performance and good performance of tracking and erosion resistance.
All ferrous parts processed by hot dip galvanized, its zinc coating more than 86u, it has
good corrosion resistance.
Product Advantages
• High-strength insulation suitable for 33kV primary networks
• Fast fault isolation to prevent transformer and line damage
• Drop-out design ensures clear visual disconnection
• Corrosion-resistant hardware for long outdoor service
• Compatible with different fuse links for flexible protection levels
• Excellent resistance to humidity, UV, contamination, and temperature changes
Application Scenarios
33kV Primary Distribution Feeders:Mounted on poles along the feeder; the fuse melts during faults, causing the fuse holder to drop and isolate the section.
Pole-Mounted Distribution Transformers:Installed on the transformer HV side to prevent damage from short circuits or overloads.
Branch Line/Tap Point Protection:Used at branch points; downstream faults trigger only the tap cutout, keeping the main line energized.
Industrial HV Outdoor Installations:Applied in outdoor HV supply circuits for pumps, switchgear, or plant distribution panels.
Rural Electrification and Long-Distance Lines:Distributed along long lines to improve reliability by quickly isolating faulted segments.
Quality Assurance
Each unit undergoes tests for power-frequency withstand voltage, mechanical endurance, contact resistance, temperature cycling, and fuse-link compatibility according to ASTM standards.
| Rated voltage(KV) | Rated current(A) | Rated interrupting current(KA) | Lightning impulse withstand voltage to ground (BIL KV) | Minimum power frequency withstand dry voltage to ground (KV) | Minimum creepage distance(mm) |
| 11-15 | 100/200 | 12 | 110 | 42 | 220 |
| 11-15 | 100/200 | 12 | 125 | 50 | 320 |
| 24-27 | 100/200 | 12 | 150 | 65 | 470 |
| 33-38 | 100/200 | 8 | 170 | 70 | 660 |
| 33-38 | 100/200 | 8 | 170 | 70 | 720 |
| 33-38 | 100/200 | 8 | 170 | 70 | 900 |
FAQ
Q1: What fuse links can be used?
A1: Standard 6A–200A links for 33kV distribution.
Q2: Does it support polymer or porcelain options?
A2: Yes, both types are available.
Q3: Is visual inspection easy after operation?
A3: Yes, the drop-out design provides a clear visible break.
