Product Features
- Electrical and Protection Performance
- Utilizes high-performance zinc oxide resistor blocks featuring excellent voltage-ampere characteristics, low residual voltage, and high current-handling capacity. It effectively limits lightning overvoltages and switching overvoltages within 10kV systems, thereby protecting the insulation of cables and power distribution equipment from damage.
- Boasts a rapid response speed, activating instantaneously the moment an overvoltage occurs to promptly discharge lightning currents. This prevents overvoltages from intruding into cable terminations, ensuring stable and reliable protection performance.
- Exhibits superior non-linear voltage-ampere characteristics; leakage current is minimal under normal operating voltages, resulting in low power consumption. Under overvoltage conditions, it conducts rapidly; once the surge current has been discharged, it automatically reverts to its insulating state, requiring no maintenance.
- Structural and Safety Features
- Features a seamless, gap-free integral silicone rubber composite housing that offers excellent sealing performance. This effectively prevents the ingress of moisture and contaminants into the interior, safeguarding the resistor blocks from moisture-induced damage.
- Adopts an integrated, modular structural design with built-in cable leads, facilitating convenient installation. It connects directly to cable terminations and power distribution equipment without the need for additional auxiliary devices, making it ideally suited for installation at cable outlet terminals.
- Incorporates a self-positioning, anti-dislodgement mechanism that automatically locks the interface once properly seated, preventing loosening or detachment during operation. The cable leads possess high dielectric strength, eliminating the risk of electric shock during operation and ensuring the safety of maintenance personnel.
- Features a gapless design that prevents follow-on currents during operation. This eliminates the risks of explosion or fire associated with power-frequency follow-on currents, ensuring a high level of safety.
- Environmental and Weather Resistance
- Exhibits excellent weather resistance, capable of operating within a wide temperature range of -40°C to +90°C. At both high and low extremes, the insulating properties of the silicone rubber housing and cable leads remain undiminished, with no risk of cracking or embrittlement, making it suitable for a variety of indoor and outdoor environments.
- Offers superior resistance to moisture, water, contamination, and salt spray, boasting an IP67 protection rating. It operates stably over long periods in harsh environments—including those with high humidity, dust, or salt spray—remaining impervious to the corrosive effects of rain and condensation.
- Resists aging, UV radiation, and ozone corrosion, offering a service life of over 20 years. Its maintenance-free operation helps reduce long-term maintenance and operational costs. 4. Mechanical and Compatibility Characteristics
- Possesses high mechanical strength, as well as resistance to impact and vibration; capable of withstanding the mechanical stresses encountered during transportation, installation, and operation without risk of deformation or damage, and rated for a seismic intensity level of 8.
- Compatible with the cable outgoing terminals of 10kV power distribution systems; suitable for installation in various equipment—including cable terminations, switchgear, cable branch boxes, and compact substations—offering exceptional versatility.
- Compact in size and lightweight; features customizable cable lead lengths, facilitating convenient installation that requires no complex procedures.
Technical Parameters
| Application Type | Surge Arrester Model | Rated Voltage of Arrester (kV) | System Nominal Voltage (kV) | Continuous Operating Voltage (kV) | DC 1mA Reference Voltage (kV) | Maximum Residual Voltage (kV, Peak) | 2000μs Square Wave Current Capacity (A) | 4/10 High Current Withstand Capability (kA) | Leakage Current at 0.75× DC Reference Voltage (μA) | Creepage Distance (mm) | Dimensions (mm) | Terminal Specification |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Distribution Type S | HY(YH)5WS-12.7/50Q | 12.7 | 10 | 6.6 | ≥25 | Steep wave: 57.5, Lightning: 50, Switching: 42.5 | 75 | 65 | ≤50 | 155 | Φ85×210 (main body), cable length 300 | M10 |
| Distribution Type S | HY(YH)5WS-17/50Q | 17 | 10 | 13.6 | ≥25 | Steep wave: 57.5, Lightning: 50, Switching: 42.5 | 75 | 65 | ≤50 | 155 | Φ85×210 (main body), cable length 300 | M10 |
| Power Station Type Z | HY(YH)5WZ-12.7/45Q | 12.7 | 10 | 6.6 | ≥24 | Steep wave: 51.8, Lightning: 45, Switching: 38.2 | 150 | 65 | ≤50 | 225 | Φ95×215 (main body), cable length 300 | M10 |
| Power Station Type Z | HY(YH)5WZ-17/45Q | 17 | 10 | 13.6 | ≥24 | Steep wave: 51.8, Lightning: 45, Switching: 38.2 | 150 | 65 | ≤50 | 225 | Φ95×215 (main body), cable length 300 | M10 |