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Porcelain insulators are insulators made of electrical ceramics as insulation components. Electrical ceramics are baked from quartz, feldspar, and clay as raw materials. The surface of porcelain insulators is usually covered with porcelain glaze to improve their mechanical strength, prevent water infiltration, and increase surface smoothness.
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Porcelain insulators have been used in electrical networks for decades due to their stable insulation characteristics and long service history. They play an essential role in separating energized conductors from grounded structures while supporting mechanical loads generated by the line.
The Reacon Porcelain Insulator is designed for overhead distribution and transmission applications where dependable insulation performance is required. Manufactured from electrical-grade ceramic materials, the insulator provides a combination of dielectric strength and mechanical durability suitable for outdoor power systems.
Its construction allows operation in a variety of environmental conditions commonly encountered in utility infrastructure projects.
Electrical-grade porcelain construction
Suitable for overhead line applications
Stable insulation performance
Good resistance to environmental exposure
Designed for outdoor installation
Supports conductor positioning and isolation
Compatible with utility network requirements
Long service life in power system applications
This product is widely used in:
Overhead distribution lines
Power transmission systems
Utility pole installations
Electrical substations
Rural electrification projects
Industrial power networks
Although composite insulators have become common in many projects, porcelain insulators continue to be selected for numerous utility applications due to their established performance record.
Proven long-term field experience
Consistent insulation properties
Resistance to ultraviolet exposure
Reliable operation across a wide temperature range
These characteristics make porcelain insulators a practical option for many overhead electrical systems.
High-purity ceramic raw materials
High-temperature firing for consistent quality
Strict electrical and mechanical testing
Inspection for cracks, glaze defects, and dimensional accuracy
Final quality inspection before delivery
| Product Name | Porcelain Insulator |
| Material | Electrical Grade Porcelain |
| Application | Overhead Distribution and Transmission Lines |
| Installation | Outdoor |
| Function | Electrical Insulation and Conductor Support |
| Service Environment | Utility Power Systems |
| OEM Service | Available |
Reacon supplies electrical insulation products, transmission hardware, and utility line accessories for power infrastructure projects worldwide. We support customized manufacturing based on technical drawings, project specifications, and customer requirements.
ANSI Class | 52-1 | 52-2 | 52-3 | 52-4 | 52-5 | 52-6 | 52-8 | 52-9 | 52-10 | ||
IEC Class | XP-45C | XP-70C | XP-70 | XP-70C | XP-110 | XP-110C | XP-160 | XP-45C | XP-160C | ||
Fig No. | 1 | 2 | 3 | 4 | 3 | 4 | 3 | 5 | 4 | ||
Main DemensionS/MM | (H)Unit Spacing/MM | 140 | 160 | 155 | |||||||
(D)Disc Diameter/MM | 165 | 190.5 | 254 | 254 | 254 | 254 | 254 | 108 | 280 | ||
Leakage Distance/MM | 178 | 210 | 292 | 292 | 292 | 292 | 320 | 171 | 280 | ||
Power-frequency Punc- | 80 | 90 | 110 | 110 | 110 | 110 | 110 | 80 | 110 | ||
Average Flashover Voltage | Power Frequency | Dry/KV | 60 | 65 | 80 | 80 | 80 | 80 | 80 | 80 | 80 |
Wet/KV | 30 | 35 | 50 | 50 | 50 | 50 | 50 | 30 | 50 | ||
Critical Impulse | Positive/KV | 100 | 115 | 125 | 125 | 125 | 125 | 125 | 125 | 100 | |
Negative/KV | 100 | 115 | 130 | 130 | 130 | 130 | 130 | 90 | 130 | ||
Combined M &E Strength/KN | 45 | 70 | 70 | 70 | 111 | 111 | 160 | 45 | 160 | ||
Impact Failing Load/N M | 5 | 6 | 6 | 6 | 7 | 7 | 10 | 5 | 10 | ||
Routine Tension Load/KN | 22 | 35.5 | 35.5 | 35.5 | 55.5 | 55.5 | 80 | 22 | 80 | ||
R.I.V Date | Test Voltage To Ground/KV | 7.5 | 7.5 | 10 | 10 | 10 | 10 | 10 | 7.5 | 10 | |
Max R.I.V at 1000KHZ/μV | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | 50 | ||
Weight/KG | 2.5 | 3.9 | 4.6 | 4.9 | 5.6 | 5.9 | 6.9 | 2.6 | 7.2 | ||
Q1: What is a porcelain insulator used for?
A1: It is used to electrically isolate conductors from supporting structures while providing mechanical support in overhead power systems.
Q2: Why are porcelain insulators still widely used?
A2: Porcelain offers stable insulation performance and has a long history of reliable service in electrical networks.
Q3: Can this insulator be used outdoors?
A3: Yes. It is designed specifically for outdoor utility and transmission line applications.
Q4: Is customization available?
A4: Yes. Reacon can provide customized dimensions, fittings, and specifications according to project requirements.
Q5: What industries commonly use porcelain insulators?
A5: Utility companies, transmission operators, distribution networks, and industrial power facilities commonly use porcelain insulators.
