The most common equipment protected by increased safety are transformers, motors, luminaires, cells, batteries, terminals and wires. It is not appropriate for electronic components or sparking devices such as switches. Increased Safety relies upon a dust/water tight enclosure to avoid tracking across live circuits. A large number of manufacturers produce increased safety enclosures, terminals and junction boxes.
Important Design Parameters
- Uninsulated, live components are subject to special protective requirements. Air and creepage gaps are wider than is generally the case in industry. Special conditions apply to the required IP enclosure protection.
- More stringent requirements apply to windings; mechanical strength, insulation, and resistance to high temperatures. Minimum cross sections are stipulated for winding wire, the impregnation and reinforcement of coils, and thermal monitoring devices.
Applications
Installation material such as Marshalling and junction boxes, terminal compartments for heating systems, batteries, transformers, ballast, and squirrel cage motors.
Increased Safety (Ex e) – EN 60079-7
The most common equipment protected by increased safety are transformers, motors, luminaires, cells, batteries, terminals and wires. It is not appropriate for electronic components or sparking devices such as switches. Increased Safety relies upon a dust/water tight enclosure to avoid tracking across live circuits. A large number of manufacturers produce increased safety enclosures, terminals and junction boxes.
