Product Overview
The BZ3-35 bending plate is a busbar support and insulating connection component designed for ABB-standard 35 kV high-voltage electrical equipment. With a standard width of 120 mm, it is mainly used in switchgear, busbar bridges, and related equipment to support and secure busbars at a 90-degree angle.
The product provides mechanical support and electrical insulation, helping maintain the structural stability and electrical safety of the power system.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | BZ3-35 |
| Applicable Standard | ABB 35 kV electrical equipment configuration |
| Width | 120 mm |
| Rated Voltage | 35 kV |
| Material | High-strength insulating composite material, DMC/SMC, or cast aluminium with an insulating coating |
| Surface Treatment | Insulating coating or epoxy resin dip coating |
| Operating Temperature Range | -40°C to +105°C |
| Insulation Class | Class F |
| Mechanical Bending Strength | ≥25 kN |
| Flame-Retardant Rating | UL94 V-0 |
| Environmental Resistance | UV-resistant, moisture-resistant, and corrosion-resistant |
Product Features
Compatible with ABB 35 kV Equipment
The product is designed to match the mounting dimensions of ABB-standard 35 kV switchgear, busbar bridges, and related electrical equipment. It can be installed directly without additional machining or structural modification.
High-Strength Insulating Structure
The high-performance insulating composite material effectively separates the busbar from the switchgear enclosure, helping prevent electrical leakage and short circuits.
Its high mechanical strength allows it to withstand the electrodynamic forces generated under short-circuit conditions.
90-Degree Busbar Routing
The L-shaped structure supports and secures the busbar at a 90-degree angle. This design helps optimize the internal layout of the switchgear and improves busbar routing efficiency.
Lightweight and Durable
The one-piece moulded structure is lightweight and easy to install. It also provides reliable resistance to ageing, corrosion, high temperatures, and low temperatures, supporting a long service life.
Safe Structural Design
The insulating surface treatment and rounded edges help prevent damage to the busbar and reduce the risk of injury to installation personnel. The design meets the applicable safety requirements for high-voltage electrical equipment.
Applications
- Suitable for busbar routing and support in ABB 35 kV high-voltage switchgear, busbar bridges, and power distribution equipment.
- Used for the 90-degree fixing and support of rectangular copper or aluminium busbars.
- Helps maintain the required phase-to-phase and phase-to-earth insulation distances.
- Provides mechanical stability for busbar systems.
- Widely used in substations, power plants, industrial power distribution systems, and other medium- and high-voltage electrical installations.
Operating Conditions
Environmental Conditions
- Ambient temperature: -40°C to +40°C.
- For special operating conditions, the temperature range can be extended to -40°C to +105°C.
- Installation altitude: no more than 2,000 m. Derating may be required above 2,000 m.
- Relative humidity: no more than 95% at 25°C.
- Condensation and corrosive gases are not permitted.
- The installation location should be well ventilated and free from severe vibration, flammable substances, and explosive materials.
Electrical Conditions
- Rated voltage: 35 kV.
- Applicable busbar size: suitable for copper or aluminium busbars with a width of 120 mm.
- Short-circuit withstand capability: capable of withstanding electrodynamic forces corresponding to a short-time current rating of 31.5 kA for 4 seconds.
Installation Requirements
- Before installation, clean the surfaces of the bend support and busbar to remove oil, dust, and other contaminants.
- Use suitable bolts for fastening. The tightening torque must comply with the equipment installation requirements.
- Avoid excessive or insufficient tightening, which may cause mechanical damage, looseness, or poor connection.
- After installation, check the insulation distance between the busbar and the bend support to ensure compliance with the electrical clearance requirements of a 35 kV system.
- Avoid exposed installation in humid or corrosive environments.
- A suitable protective enclosure must be provided if the product is used outdoors.
Precautions
- Do not operate the product above its rated voltage or current, as this may cause insulation breakdown or mechanical failure.
- Protect the product from impact and compression during transportation and storage to prevent cracking or deformation.
- Regularly inspect the surface insulating layer. Replace the product immediately if coating damage, cracking, or other structural defects are found.
- Installation and maintenance must be carried out by qualified electrical personnel in accordance with applicable electrical safety procedures.
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