产品概述
WB-35Q/60 3AV3 绝缘安装支架 是一种用于35千伏高压的绝缘结构部件 switchgear3VA 系列断路器及相关组件。
It is mainly installed in critical areas such as busbar compartments and contact box assemblies. By optimizing electric field distribution and increasing the creepage distance, the component helps maintain safe and stable operation of high-voltage electrical equipment under demanding operating conditions.
Manufactured as an integrated component from high-strength insulating material, it provides both mechanical support and electrical insulation.
技术规格
| 参数 | 技术规格 |
|---|---|
| 模型 | WB-35Q/60 3AV3 |
| 额定电压 | 35千伏 |
| 绝缘材料 | Epoxy resin or unsaturated polyester resin, including DMC/SMC |
| 阻燃等级 | V-0 according to GB/T 2408 |
| 热等级 | Class F, 155°C |
| 表面处理 | Red insulating coating with arc resistance and tracking resistance |
| 抗压强度 | ≥120 MPa |
| 弯曲强度 | ≥80 MPa |
| 爬电距离 | ≥390 mm, meeting the insulation coordination requirements of 35 kV systems |
| 兼容设备 | 35 kV high-voltage switchgear, 3VA series circuit breakers, and compatible contact box assemblies |
产品特点
Excellent Insulation Performance
The component is manufactured from high-purity insulating material, helping block phase-to-phase and phase-to-earth discharge paths. This improves the insulation margin and operating safety of the electrical system.
Reliable Structural Strength
The one-piece moulded construction provides strong resistance to impact, deformation, and mechanical stress. It can withstand the mechanical loads generated during switchgear assembly, transportation, installation, and long-term operation.
Optimized Electric Field Distribution
Curved transitions and chamfered structures help reduce electric field concentration around edges and transition areas. This design lowers the risk of partial discharge and supports stable insulation performance.
强大的环境适应性
The insulating bending plate offers resistance to high and low temperatures, humidity, ageing, and chemical corrosion. It is suitable for indoor high-voltage electrical environments with demanding operating conditions.
安装便捷
Preformed mounting holes are designed to match compatible switchgear and circuit breaker assemblies. This supports accurate positioning, efficient installation, and convenient maintenance.
Long Service Life
The selected insulating materials provide good resistance to electrical ageing, thermal ageing, and environmental deterioration. Stable long-term performance helps reduce replacement frequency and maintenance costs.
应用
The WB-35Q/60 3AV3 Insulating Bending Plate can be used in the following applications:
- Busbar compartments of 35 kV indoor high-voltage switchgear
- Cable compartments and contact box assemblies
- Insulating support and arc-separation structures
- Insulating transition connections between operating mechanisms and switchgear enclosures
- 3VA series circuit breakers and compatible circuit breaker assemblies
- Custom applications involving verticality inspection or machining fixture assistance
- High-voltage power distribution systems for utilities and industrial facilities
- Rail transit power distribution systems
- Data centre power supply and distribution systems
- Industrial and commercial power distribution equipment
操作条件
环境条件
| Condition | Requirement |
|---|---|
| 环境温度 | -40°C 至 +85°C |
| 相对湿度 | ≤95%, non-condensing |
| Installation Altitude | ≤3,000 m |
| Installation Type | Indoor installation |
| Storage Temperature | -10°C to +40°C |
For installations above 3,000 metres, insulation coordination and equipment derating requirements should be evaluated according to the specific application.
The installation environment should be free from corrosive gases, flammable or explosive substances, and severe dust contamination. The product should be protected from direct sunlight, rain, and prolonged exposure to moisture.
电气状况
- Rated system voltage: 35 kV
- Power-frequency withstand performance should comply with the applicable requirements of GB/T 11022 and GB/T 3906
- The product must not be used in systems exceeding its specified voltage level
- Required insulation clearances and creepage distances must be maintained after installation
- The component should be installed only in electrical assemblies for which its dimensions and insulation performance have been verified
安装要求
Before installation, clean the entire surface of the component. Make sure it is free from oil, dust, metal particles, moisture, cracks, and other mechanical damage.
Position the component strictly according to the equipment drawings. All mounting holes must be aligned accurately with the corresponding holes in the switchgear or circuit breaker assembly.
Tighten the fasteners according to the specified torque requirements. Excessive tightening may damage the insulating material, while insufficient tightening may cause movement or vibration during operation.
After installation, check all electrical clearances and creepage distances to ensure that they meet the safety requirements of the 35 kV system.
Avoid long-term storage in humid or corrosive environments. The product should remain clean, dry, and properly protected before installation.
Inspection and Maintenance
Routine Inspection
Regularly inspect the surface for:
- Cracks or mechanical damage
- Deformation
- Carbonization
- Electrical tracking marks
- Partial discharge traces
- Coating deterioration
- Contamination or moisture accumulation
- Loose mounting fasteners
Clean the surface using a dry, soft, lint-free cloth. Do not use abrasive tools or corrosive cleaning agents that may damage the insulating surface.
Replacement Conditions
Stop using the component and replace it immediately if any of the following conditions are found:
- Visible cracks
- Severe deformation
- Carbonized areas
- Electrical tracking marks
- Arc damage
- Significant surface erosion
- Reduced mechanical stability
- Abnormal partial discharge
- Failure to maintain the required insulation clearance
Damaged insulating components must not be repaired through unauthorized drilling, filling, grinding, or structural modification.
安全注意事项
Do not modify the structure, drill additional holes, or machine the product without technical approval. Unauthorized modification may reduce its mechanical strength, creepage distance, and insulation performance.
Protect the product during transportation and handling. Avoid impact, compression, dropping, and improper stacking, as these may cause hidden cracks or permanent deformation.
Keep the component away from open flames, welding sparks, and direct high-temperature heat sources.
Installation, inspection, and maintenance must be carried out by qualified electrical personnel. All work must comply with applicable high-voltage electrical safety procedures.
Before maintenance, isolate the equipment from all power sources, verify that it is de-energized, discharge any residual voltage, and apply the required grounding and safety measures.
