DFMHUB

Diagonal Clamp

Trusted experts in Earthing and Lightning Protection Systems since 2005.

Diagonal Clamp ARK Make by DFMHUB | Structural Lightning Protection Clamp for India

Lightning protection systems (LPS) are only as reliable as their mechanical and electrical continuity across structural members. The Diagonal Clamp ARK Make by DFMHUB is a precision-engineered component designed to ensure permanent, low-resistance bonding between diagonal, cross, and angular structural members in lightning protection and earthing systems.

Used extensively in steel structures, lattice towers, industrial sheds, substations, solar plants, and infrastructure projects, this diagonal clamp provides mechanically secure and electrically stable interconnection, even under India’s harsh environmental and electrical stress conditions.

Designed and manufactured in India, ARK diagonal clamps are optimized for high lightning current flow, corrosion resistance, and long service life, aligning with IEC 62305 lightning protection principles and Indian site realities.


What Is a Diagonal Clamp in a Lightning Protection System?

A diagonal clamp is a structural bonding component used to:

  • Electrically interconnect diagonal steel members, bracings, angles, or cross beams

  • Maintain equipotential bonding across metallic structures

  • Ensure continuous lightning current path from air termination to earth termination

  • Prevent dangerous side-flashing, arcing, or potential rise at structural joints

In structural lightning protection systems, especially where conductors cannot be routed linearly, diagonal clamps become critical to maintain electrical integrity.


Why Diagonal Clamps Are Critical in Indian Lightning Protection Projects

India experiences:

  • High lightning density zones (Odisha, West Bengal, Assam, Maharashtra, Kerala)

  • High soil resistivity variations

  • Extreme humidity, monsoon exposure, and coastal corrosion

  • Large steel-intensive infrastructure growth

Under these conditions, poor-quality clamps lead to:

  • Increased contact resistance

  • Corrosion-induced failures

  • Mechanical loosening under vibration

  • Non-compliance with IEC risk assessment outcomes

The ARK Make Diagonal Clamp by DFMHUB is engineered specifically to address these challenges.


Diagonal Clamp ARK Make – Product Overview

ParameterSpecification
Product NameDiagonal Clamp
BrandARK Make
ManufacturerDFMHUB
ApplicationStructural lightning protection & bonding
Compatible ConductorsGI strip, GI wire, copper strip/wire
Structural MembersAngles, flats, round steel, diagonal bracings
Finish OptionsHot Dip Galvanized / Copper Bonded
InstallationBolt-on, no welding required
Designed ForIndian climatic & electrical conditions

Engineering Design Philosophy – ARK Make by DFMHUB

1. Electrical Performance Design

  • Large metal-to-metal contact surface

  • Optimized current flow path to handle lightning impulse currents

  • Maintains low contact resistance over life cycle

2. Mechanical Integrity

  • High tensile fasteners

  • Anti-slip jaw geometry

  • Vibration-resistant locking arrangement

  • Suitable for dynamic loads in towers and sheds

3. Environmental Durability

  • Hot Dip Galvanization as per Indian exposure classes

  • Optional copper-bonded variants for aggressive soil or coastal zones

  • Designed to withstand monsoon cycles, UV exposure, and pollution


Component-Wise Breakdown – Diagonal Clamp Assembly

ComponentMaterialFunction
Clamp BodyHigh-grade mild steelStructural bonding & load transfer
FastenersGalvanized high tensile steelSecure mechanical locking
Contact SurfaceMachined or serratedReduces contact resistance
Protective FinishHDG / Copper BondedCorrosion resistance

Step-by-Step Installation Methodology

  1. Identify bonding points between diagonal or cross structural members

  2. Clean contact surfaces to remove paint, rust, or grease

  3. Position the diagonal clamp ensuring full surface contact

  4. Insert and tighten fasteners to specified torque

  5. Verify electrical continuity using resistance measurement

  6. Document installation as part of lightning protection compliance records

This methodology aligns with IEC 62305 best practices for structural bonding.


Standards & Compliance

International Electrotechnical Commission guidelines form the foundation of ARK Make design philosophy.

Standards Compliance Table

StandardDescriptionRelevance
IEC 62305Lightning ProtectionStructural bonding
IS/IEC PrinciplesIndian adoptionCompliance-ready design
ISO 9001Manufacturing QualityProcess consistency
Internal DFMHUB QABatch testingProduct traceability

Testing & Quality Assurance

Each batch of ARK Make Diagonal Clamps undergoes:

  • Dimensional verification

  • Coating thickness testing

  • Mechanical load testing

  • Visual inspection for defects

  • Random electrical continuity checks

This ensures predictable performance in high-risk lightning zones.


Industry-Wise Applications in India

Infrastructure & Transport

  • Metro rail structures

  • Bridges & flyovers

  • Airports & terminals

Power & Energy

  • Solar PV plants

  • Wind turbine towers

  • Substations & transmission yards

Industrial Facilities

  • Refineries & chemical plants

  • Steel plants

  • Warehouses & logistics parks

Commercial & Institutional

  • Data centers

  • Hospitals

  • IT parks & high-rise buildings


Manufacturer vs Trader – Why ARK Make by DFMHUB

AspectDFMHUB (Manufacturer)Trader
Design ControlIn-house engineeringNone
CustomizationProject-specificLimited
Quality AssuranceBatch-testedSupplier-dependent
Technical SupportEngineering-ledSales-only
Compliance DocumentationAvailableOften missing

Services & Technical Support by DFMHUB

  • Lightning protection system consulting

  • Component selection & BOQ support

  • Custom clamp design for special structures

  • Site application guidance

  • Documentation for audits & approvals


Frequently Asked Questions (FAQs)

1. What is the purpose of a diagonal clamp in lightning protection?

It ensures electrical continuity between diagonal or cross structural members, preventing side-flashing.

2. Is welding required for installation?

No. ARK diagonal clamps are bolt-on, ensuring maintainability and compliance.

3. Can it be used with copper conductors?

Yes, compatible variants are available for copper and GI conductors.

4. Is it suitable for coastal Indian environments?

Yes, with hot dip galvanized or copper-bonded finish.

5. Does it comply with IEC 62305?

It is designed in alignment with IEC 62305 structural bonding principles.

6. What maintenance is required?

Minimal; periodic visual inspection is sufficient.

7. Can DFMHUB customize clamp sizes?

Yes, project-specific customization is available.

8. Is it suitable for solar plant structures?

Absolutely. Widely used in utility-scale solar projects.

9. What documentation is provided?

Technical datasheets, QA reports, and compliance references.