Model Specifications: DB-0770-170.
Dimensions: Length × Width × Thickness: 77mm × 70mm × 1.7mm.
Material: Q235 carbon steel.
Surface Treatment: Hot-dip galvanized.
Hole Design: Includes a "0" reference hole and adjustment holes 1-5, which together provide a five-position adjustment range from L1 to L5. Applicable Scope: 10kV voltage level conductor connections, suitable for substations, overhead lines, and other applications.
The DB-0770-170 adjusting plate is a critical component in power transmission systems, enabling precise adjustment of insulator string and conductor lengths while ensuring structural integrity and electrical continuity. Multiple bolt hole positions can be adjusted by ±50 mm, allowing fine-tuning of tension distribution within an insulator string or conductor span.
The DB-0770-170 adjusting plate is a critical component in power transmission systems, enabling precise adjustment of insulator string and conductor lengths while ensuring structural integrity and electrical continuity. Multiple bolt hole positions can be adjusted by ±50 mm, allowing fine-tuning of tension distribution within an insulator string or conductor span. Manufactured from Q235B structural steel with a tensile strength of ≥500 MPa, the plate ensures resistance to fatigue and environmental stresses. The standard DB-0770-170 adjusting plate measures 350 mm in length, 30 mm in width, and 8 mm in thickness, weighing approximately 1.7 kg, making it ideal for use at high altitudes or in confined spaces.
The DB-0770-170 adjusting plate is primarily used in the following scenarios:
High-voltage transmission lines
For connecting insulator strings and adjusting conductor tension in 110kV–750kV lines;
Substations
Connecting busbars and equipment within substations, ensuring electrical connectivity with a contact resistance ≤ 1.2 times the conductor resistance;
Extreme environments
Suitable for use in high-altitude environments, with structural reinforcement measures to offset reduced air density and increased UV exposure, making it suitable even for altitudes up to 4,500 meters.
How is the widely used DB-0770-170 adjusting plate manufactured?
Material Preparation
30mm wide by 8mm thick steel. Clean the surface and grind the edges to remove burrs and sharp corners to reduce stress concentration.
Forming
Press the sheet metal into shape using a hydraulic press and drill holes. M16 bolt holes are approximately 18mm.
Hot-Dip Galvanizing
Pickle the formed adjustment plate in 15% H₂SO₄ at 60-70°C for 10-15 minutes. Then, flux it in a ZnCl₂/NH₄Cl solution. Then, bath it in a 99.99% pure zinc bath at 450–480°C for 15 minutes to form a 30-50μm zinc layer. Ultrasonic agitation is used in a zinc bath at 480–520°C to achieve a zinc layer thickness of 86–100μm.
Quality Inspection
Load and fatigue resistance tests are conducted. Products are shipped only if they meet the requirements.
Why purchase the DB-0770-170 adjusting plate from us?
Strict Raw Material Quality Control
We carefully select raw materials, ensuring they are rust-resistant, durable, and durable.
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Strict Production Standards
Our years of experience ensure not only a comprehensive product range but also standardized production processes, ensuring reliable products for every user.
02
Stable Performance
Galvanized for resistance to acids and alkalis, corrosion, and consistent quality.
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Customizable Production
We offer a wide range of specifications and can customize our products to meet every customer's needs.
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