Nomal Type Suspension Insulators
01
52-2 Disc Suspension Porcelain Insulator
video
product description
Standard: ANSI C29.2 (American National Standard for suspension insulators)
Type: Cap-and-pin design (disc suspension)
Mechanical Rating: 52 kN (≈11,700 lbf) ultimate tensile strength
Electrical Characteristics:
Dry flashover: 110 kV
Wet flashover: 80 kV
Impulse withstand: 150 kV
Dimensions:
Diameter: ≈254 mm (10")
Height: ≈146 mm (5.75")
Creepage distance: ≈305 mm (12")
Material: High-strength alumina porcelain with smooth glaze
Coupling: Standard 12mm ball-and-socket
Primary Applications
69-138 kV transmission lines (typically 4-8 discs per string)
Distribution-level dead-end applications
Substation bus supports
Industrial power line installations
Areas with moderate pollution levels
Performance Advantages
Mechanical Reliability
1.Proven 52 kN rating withstands heavy conductor loads (ACSR, AAAC)
2. Robust design handles wind/ice loading in most climates
Electrical Performance
1.Consistent dielectric properties across temperature ranges (-40°C to +60°C)
2.Excellent puncture resistance
features
Durability Features
Porcelain body resists:
1.UV degradation
2.Corona effects
3.Thermal cycling stresses
Galvanized steel hardware resists corrosion
1.Maintenance Benefits
2.Easy visual inspection for damage
3.Simple replacement of individual discs
4.Cleaning possible with standard methods
String Design Considerations
Typical Configurations:
69 kV: 4-5 discs, 115 kV: 7-8 discs, 138 kV: 8-9 discs
Pollution Applications:
Add 1-2 extra discs for:
Coastal areas
Industrial zones
Desert environments
specification
| Ball and socket type suspension porcelain insulators( IEC Class ) | ||
| Type | XP-70 | |
| IEC Class | Apr-52 | |
| Coupling size | 16 | |
| Dimensions | ||
| Diameter(D) | mm | 255 |
| Spacing(H) | mm | 146 |
| Leakage distance | mm | 320 |
| Mechanical Values | ||
| Combined M&E strength | kn | 70 |
| Impact strength | N.m | 6 |
| Routine proof test load | kn | 35 |
| Electrical Values | ||
| power frequency dry withstand voltage | kv | 70 |
| power frequency wet withstand voltage | kv | 40 |
| Dry lightning impulse withstand voltage | kv | 100 |
| Power frequency puncture voltage | kv | 110 |
| Radio influence Voltage Data | ||
| Test voltage RMS to ground | kv | 10 |
| Maximum RIV at 1000kHz | μv | 50 |
| Packing and Shipping Data | ||
| Net weight,approximate | kg | 4.7 |
| Color | Brown | |
