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The Low Voltage Porcelain Ceramic Insulator is engineered to provide secure insulation and mechanical support for electrical conductors in low-voltage distribution systems. Manufactured from high-strength fired porcelain, this ceramic insulator maintains electrical stability under varying climate conditions, including moisture, temperature fluctuation, and long-term UV exposure. Its compact structure and strong dielectric performance make it suitable for reliable low voltage power transmission, ensuring safety and operational continuity.
Excellent dielectric strength for enhanced insulation2.Brown or grey glazed
Weatherproof ceramic suitable for outdoor installation
Low maintenance and long operational lifespan
Strong surface glaze to resist cracking and contamination
Compatible with various low voltage distribution installations
The Low Voltage Porcelain Ceramic Insulator is widely used in:
Low voltage utility distribution lines – Provides secure insulation for overhead conductors.
Industrial and commercial electrical systems – Enhances reliability in stable low-voltage networks.
Rural and urban overhead power lines – Suitable for various installation environments.
Outdoor electrical infrastructure – Designed for exposure to long-term climate conditions.
| lass ANSI | Mian Demension in (mm) | lea- kage Dist-ance in (mm) | Min.Pin Length in (mm) | Cantilever Strength 1b(KN) | Average Flashover Voltage | Power Frequ-aency Pun- cture Volt-age KV | Radio influence Voltage | ||||||
| D (max) | H | h | Power Frequency | Critcal Impulse | Test Voltage To Ground KV | Max Riv At 1MHz V | |||||||
| Dry kv | Wet kv | Pos-itive kv | Nag-ative kv | ||||||||||
| 55-1 | 3 1/4 (83) | 3 1/2 (89) | 1 3/4 (44) | 4(102 | 4(102) | 3000(13) | 35 | 20 | 50 | 70 | 50 | 5 | 2500/ 50 |
| 55-2 | 3 3/4 (95) | 3 1/4 (83) | 1 1/2 (38) | 5(127) | 4(102) | 2500(11) | 50/45 | 25 | 75/ 70 | 95/ 85 | 70 | 5 | 2500/ 50 |
| 55-3 | 4 3/4 (121) | 3 3/4 (95) | 1 1/2 (38) | 7(178) | 5(127) | 2500(11) | 65/55 | 35/30 | 100/ 90 | 130/ 110 | 90 | 10 | 5500/ 50 |
| 55-4 | 5 1/2 (140) | 4 3/8 (111) | 1 3/4 (44) | 9(229) | 5(127) | 3000(13) | 70/65 | 40/35 | 110/ 105 | 140/ 130 | 95 | 10 | 5500/ 50 |
| 55-5 | 7 (178) | 4 7/8 (124) | 2(51) | 12(305) | 5(152) | 3000(13) | 85/80 | 45 | 140/ 130 | 170/ 150 | 115 | 15 | 800/ 100 |
Q1: What voltage range is this porcelain ceramic insulator used for?
A1：It is suitable for low voltage applications, typically below 1kV.
Q2: Can it be used in coastal or humid environments?
A2：Yes, the ceramic glaze surface provides strong moisture and corrosion resistance.
Q3: Does it require frequent maintenance?
A3：No, maintenance is minimal due to its stable ceramic structure.
Q4: Is mechanical strength sufficient for overhead installations?
A4：Yes, it supports tension and vibration in typical low-voltage systems.
