Surge arrester
A surge arrester is a critical protective device used in power line construction to safeguard electrical equipment and overhead distribution systems from transient overvoltages caused by lightning strikes and switching operations. Installed between the line and ground, it limits surge voltage by rapidly diverting excess energy to earth, thereby maintaining system insulation integrity and improving network reliability.
Key Features
- High Energy Absorption: Efficiently dissipates lightning and switching surge energy without thermal failure
- Metal Oxide Varistor (MOV) Technology: Provides fast response time and superior non-linear voltage-current characteristics
- Excellent Residual Voltage Performance: Ensures effective clamping of overvoltages to safe levels
- Weather and Pollution Resistant Housing: Polymer or porcelain designs suitable for harsh outdoor environments
- Maintenance-Free Operation: Long service life with stable electrical performance
- Wide Voltage Range Compatibility: Suitable for distribution and sub-transmission power lines
- Enhanced System Reliability: Reduces outage frequency and protects transformers, insulators, and conductors
Product Details
General
| Application | Distribution |
| Bracket Type | NEMA 4×5 Crossarm Bracket |
| Cantilever Bending Strength – Max. | 45 Nm |
| Color | Gray |
| Material | ESP™ Polymer Housing |
| Mounting Position | Upright |
| Type | Distribution |
Dimensions
| Height | 20.8 in (528.32 mm) |
| Stud Type | 3/8-16 |
Electrical Ratings
| Creep and Leakage Distance | 46.2 in (1173 mm) |
| Current – Low Current Long Duration (LCLD) Test | 75 A |
| Duty Cycle | 36 kV |
| Frequency Rating | 48-62 Hz |
| MCOV | 29 kV |
| Maximum .5 Microsecond Discharge Volts @ Classifying Current | 119.3 kV |
| Maximum Discharge Voltage | 94.4 kV @ 1.5 kA 100.5 kV @ 3 kA 107.2 kV @ 5 kA 120.7 kV @ 10 kA 139.4 kV @ 20 kA 202 kV @ 40 kA |
| Maximum Switching Surge Protective Level @ 500A | 84.5 kV |
| Pressure Relief Capability-Symmetrical rms (kA) | 15 |
| Time – Low Current Long Duration (LCLD) Test | 2000 µs |
Certifications and Compliance
| Industry Standard(s) | IEC |
Resources and Downloads
| Specifications | Download PDF |
| Technical Drawings | N/A |