Ех i

What is the fundamental principle of intrinsically safe circuits (Ex i)?

• Preventing ignition by limiting electrical energy in equipment and wiring.

• Using explosion-proof enclosures to contain any potential explosions.

• Employing high-voltage and high-current circuits for rapid fault detection.

• Relying on inert gas purging to eliminate flammable atmospheres.

Which two types of equipment are commonly used in intrinsically safe circuits?

• Simple apparatus and explosion-proof enclosures.

• Associated apparatus and flameproof equipment.

• Simple apparatus and associated apparatus.

• Pressurized enclosures and oil immersion equipment.

Why is it crucial to inspect the entire intrinsically safe circuit, including the associated apparatus and grounding, rather than just the field device?

• To ensure all components are aesthetically pleasing and free from dust.

• Because associated apparatus and grounding also contribute to safety and must meet specific reliability and resistance requirements.

• To verify that all equipment is compatible with non-intrinsically safe systems.

• To confirm that the equipment is operating at its maximum current and voltage capacity.

Вам понравился видеоурок?

• Да

• Нет

What is the minimum required distance between intrinsically safe (IS) and non-intrinsically safe (Non-IS) terminals?

• 3 mm

• 6 mm

• 50 mm

• 100 mm

What is the primary color used to mark intrinsically safe circuits and cables?

• Red

• Yellow

• Blue

• Green