What is the Low Voltage Directive (LVD)?

The Low Voltage Directive (2014/35/EU) is one of the key European Union regulations governing the safety of electrical equipment designed to operate within specific voltage limits. Its primary objective is to ensure that electrical products are safe for users, domestic animals, and property while facilitating their free movement within the European Economic Area (EEA).

Scope

The Low Voltage Directive applies to electrical equipment operating within the following voltage ranges:

• 50 V – 1000 V AC (Alternating Current)
• 75 V – 1500 V DC (Direct Current)

A wide range of electrical and electronic products within these voltage limits must comply with the LVD requirements in order to bear the CE marking.

Essential Safety Requirements

Under the Directive, products are expected to provide protection against the following hazards:

• Risk of electric shock
• Excessive temperature and burn hazards
• Fire hazards
• Mechanical hazards
• Hazards caused by electric arcs and sparks
• Risks associated with inadequate insulation and leakage current
• Safety risks arising from external environmental influences

Conformity Assessment

To demonstrate compliance with the LVD requirements, manufacturers are required to:

• Perform a risk assessment.
• Conduct testing and evaluations according to the applicable harmonized standards.
• Prepare technical documentation.
• Issue an EU Declaration of Conformity (DoC).
• Affix the CE marking to the product.

Commonly Applied Standards

The following standards are widely used during conformity assessments under the Low Voltage Directive:

• TS EN IEC 62368-1
• TS EN 61010-1
• TS EN 60335-1
• TS EN 60204-1
• TS EN 60601-1

Main Tests Performed Under the LVD

Depending on the type of product, the following tests may be performed:

• Dielectric withstand (Hipot) test
• Insulation resistance test
• Protective earth continuity test
• Leakage current measurements
• Temperature rise tests
• Abnormal operation tests
• Mechanical strength tests
• Humidity conditioning tests
• Clearance and creepage distance evaluations

The Low Voltage Directive is one of the fundamental CE regulations ensuring the safety of electrical equipment placed on the European market. From the product design stage onward, conducting risk assessments, applying the appropriate harmonized standards, and performing the required safety tests form the foundation of LVD compliance. For equipment powered directly from the AC mains or generating hazardous voltage levels, full compliance with the LVD requirements is essential to ensure both legal conformity and user safety.