LVD - electric safety

LVD (The Low Voltage Directive 2014/35/EU) which mandates that electrical and electrical equipment within certain voltage limits eliminates health and safety risks. Specifically, it is a device operating with an input or output voltage between:

• 50-1000 V AC
• 75-1500 V DC

The Directive covers a wide range of products for both professional and home use.¨

WHAT IS TESTED:

• Within the scope of LVD, the Engineering Test Institute offers the measurement of:
• Electrical parts of manufacturing machines
• Electrical parts of heating equipment
• Electrical parts of automation equipment and elements
• Electrical laboratory, scientific and optical instruments
• Selected electrical appliances for household and similar use
• Office equipment and data processing equipment
• Medical devices, including electrical instruments and equipment
• Vibration tests
• Tests of proximity safety devices in machines with straight-line working movement
• Tests of ingress protection of electrical equipment
• Electrical welding sources
• Calculations of the safety integrity level (SIL)
• Other electrical engineering installations

WHAT IS ASSESSED:

• Basic tests - leakage currents, continuity of protective circuits, IP xx ingress protection, protection against contact with live parts, etc.
• Technical documentation (operating and maintenance instructions, electrical wiring diagrams)

MOST FREQUENT PROBLEMS:

• Shortcomings in the technical documentation
• Accessible live parts - insufficient insulation, IP xx ingress protection ...

STANDARDS:

• ČSN EN 60335-1 ed.3:2012 Electrical appliances for domestic use and similar purposes. Safety.  General requirements
• ČSN EN 60204-1 ed. 2.2007 Safety of machinery. Electrical equipment installed in machinery. General requirements
• ČSN EN 61010-1 ed. 2:2011 Safety requirements for electrical equipment for measurement, control and laboratory use. General requirements
• ČSN EN 60730-1 ed.2:2001 Automatic electrical controls for household and similar use. General requirements
• ČSN EN 60950-1 ed. 2:2006 Information technology equipment. Safety.  General requirements and others