H1: ANSI 52 Series Insulator Comparison — Porcelain Suspension Insulators for Transmission Lines
The ANSI 52 Series comprises porcelain disc suspension insulators manufactured in accordance with ANSI C29.2 standards, designed for supporting and insulating conductors in overhead transmission and distribution lines. The series covers mechanical strength grades from 45kN to 160kN, with diameters ranging from 108mm to 280mm, making them suitable for a wide variety of line voltages and environmental conditions. This comparison covers models 52‑1 through 52‑10 (excluding 52‑7, 52‑11, and 52‑12) and provides a side‑by‑side technical overview for proper selection.
Model Cross-Reference: The table includes corresponding manufacturer type designations (e.g., XP-4.5C-M, XP-7-M, XP-11-M, XP-16-M) for easy identification across different suppliers.
H2: ANSI 52 Series Insulator — Full Technical Specifications
| ANSI Class | Fig. | D /mm | H /mm | Leakage /mm | Puncture (kV) | Dry (kV) | Wet (kV) | Pos. CIFO (kV) | Neg. CIFO (kV) | RIV Test (kV) | Max RIV (μV) | M&E (kN) | Tension (kN) | Impact (N·m) | Weight (kg) |
| 52-1 | 1 | 165 | 140 | 178 | 80 | 60 | 30 | 100 | 100 | 7.5 | 50 | 45 | 22 | 5 | 2.5 |
| 52-2 | 2 | 190.5 | 146 | 210 | 80 | 65 | 35 | 115 | 115 | 7.5 | 50 | 70 | 35.5 | 6 | 3.9 |
| 52-3 | 3 | 254 | 146 | 292 | 110 | 80 | 50 | 125 | 130 | 10 | 50 | 70 | 35.5 | 6 | 4.6 |
| 52-4 | 4 | 254 | 146 | 292 | 110 | 80 | 50 | 125 | 130 | 10 | 50 | 70 | 35.5 | 6 | 4.9 |
| 52-5 | 3 | 254 | 146 | 292 | 110 | 80 | 50 | 125 | 130 | 10 | 50 | 111 | 55.5 | 7 | 5.6 |
| 52-6 | 4 | 254 | 146 | 292 | 110 | 80 | 50 | 125 | 130 | 10 | 50 | 111 | 55.5 | 7 | 5.9 |
| 52-8 | 3 | 254 | 146 | 320 | 110 | 80 | 50 | 125 | 130 | 10 | 50 | 160 | 80 | 10 | 6.9 |
| 52-9 | 5 | 108 | 160 | 171 | 80 | 60 | 30 | 125 | 90 | 7.5 | 50 | 45 | 22 | 5 | 2.6 |
| 52-10 | 1 | 280 | 165 | 280 | 110 | 80 | 50 | 100 | 130 | 10 | 50 | 160 | 80 | 10 | 7.2 |
All models: Standard ANSI C29.2 | Ball & Socket coupling | Glaze: Brown / Gray
H2: ANSI 52 Series Insulator Material & Construction (Common to All Models)
Every unit of the ANSI 52 Series is manufactured from high-grade electrical porcelain, crafted from clay, quartz or alumina, and feldspar, with a smooth glaze coating to shed water. The insulators are designed to be assembled into strings for transmission line applications. Coupling type is ball & socket with hot-dip galvanized iron fittings. Both brown and gray glaze colors are available. For more on porcelain manufacturing standards, visit the International Electrotechnical Commission (IEC).
H2: ANSI 52 Series Insulator Applications & Installation
ANSI 52 Series suspension insulators are widely used in overhead transmission and distribution lines, primarily in the Americas market. Typical applications include:
- Suspension insulator strings for transmission lines
- Strain insulator strings at dead-end towers
- Ball & socket assembly configurations
The insulators are typically used in multi‑unit strings to achieve required voltage ratings. Explore our full range of suspension insulators and transmission hardware for more options.
H2: ANSI 52 Series Insulator Quality & Performance Advantages
Porcelain suspension insulators offer excellent resistance to UV radiation, bird pecking, and scratch damage, with long service life under normal operating conditions. Full testing procedures are detailed in ANSI C29.2, published by NEMA.
Each unit undergoes routine electrical and mechanical testing, including visual inspection, dimensional checks, mechanical load tests, and high-voltage withstand tests. Design tests — such as dry flashover, wet flashover, critical impulse flashover, radio influence voltage, and thermal shock — are performed per ANSI C29.2 standards on new designs. Full test reports and traceability records are provided for each batch. For installation guidance, refer to our insulator string assembly guide.
H2: ANSI 52 Series Insulator Selection Recommendations
| Application Voltage | Recommended Model(s) | Key Selection Criteria |
| Low voltage distribution | 52-1, 52-9 | Light weight, compact size, economical |
| Medium voltage (up to 69kV) | 52-3, 52-4, 52-5, 52-6 | Moderate strength, 292mm creepage |
| High pollution areas | 52-8 | Extended creepage (320mm) for improved performance |
| High voltage (69–138kV) | 52-8, 52-10 | High strength (160kN), large diameter |
| Severe industrial/coastal | 52-10 | Maximum diameter (280mm), highest strength |
For detailed datasheets, CAD drawings, or competitive pricing on any ANSI 52 Series Insulator, please contact our sales team via the inquiry form below. We also offer OEM services and free technical consultation for transmission line design.
