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© Siemens AG 2007<br />
BD2 <strong>System</strong> — <strong>160</strong> ... 1250 A<br />
Degrees of protection for busbar trunking systems<br />
Room types according to<br />
DIN VDE 0100 (IEC 60364)<br />
Closed electrical operating areas<br />
Electrical operating areas<br />
Dry areas and rooms<br />
Damp and wet areas and rooms<br />
Designation of the degree of protection<br />
according to IEC/EN 60529<br />
IP10<br />
IP20<br />
IP20<br />
IP20<br />
Degrees of protection of electrical equipment according to IEC/EN 60529<br />
Engineering information<br />
Usage in operating areas exposed to a fire hazard<br />
In operating areas exposed to a fire hazard, IEC 60364-7-72 and<br />
DIN VDE 0100-720 paces enhanced demands on the degree of<br />
protection of electrical equipment. The demands for busbar<br />
trunking systems are:<br />
• for a fire hazard from dust and/or fibers: degree of protection<br />
IP5X<br />
• for a fire hazard from readily flammable materials apart from<br />
dust and/or fibers: degree of protection IP4X<br />
The BD2A/BD2C busbar trunking systems meet these demands.<br />
They are therefore suitable for applications in this area.<br />
Degree of 1st figure<br />
2nd figure<br />
protection<br />
Protection against direct contact Protection against solid foreign bodies and dust Protection against ingress of liquid<br />
IP00 No special protection No special protection No special protection<br />
IP20 Against finger contact Against solid bodies ≥∅ 12.5 mm No special protection<br />
IP34 Against tools Against solid bodies ≥∅ 2.5 mm No damage caused by splashwater<br />
IP41 Against wire Against solid bodies ≥∅ 1 mm No damage caused by vertically dripping water<br />
(vertical drops)<br />
IP43 Against wire Against solid bodies ≥∅ 1 mm No damaged caused by spraywater<br />
IP54 Against wire Against hazardous dust deposits inside<br />
No damage caused by splashwater<br />
(dust-tight)<br />
IP55 Against wire Against hazardous dust deposits inside<br />
No damage caused by hose-water<br />
(dust-tight)<br />
IP65 Against wire Against penetration of dust (dust-tight) No damage caused by hose-water<br />
IP66 Against wire Against penetration of dust (dust-tight) In the event of temporary immersion, ingress of water<br />
will have no harmful effects (water jet)<br />
IP67 Against wire Against penetration of dust (dust-tight) Water may not ingress in harmful quantities during<br />
immersion (temporary immersion)<br />
IP68 Against wire Against penetration of dust (dust-tight) Water may not ingress in harmful quantities during<br />
immersion for indefinite periods<br />
(continuous immersion)<br />
Protection against direct contact according to EN 50274<br />
These regulations apply for the design of electrical equipment<br />
and its installation in electrical installations with rated voltages<br />
up to 1000 V AC or 1500 V DC – regarding protection against<br />
direct contact, where there are actuators (pushbuttons, toggle<br />
levers etc.) located in the direct vicinity of parts which are live or<br />
dangerous to touch.<br />
"Finger-safe" relates only to the operating device (actuator) and<br />
only in the normal direction of actuation. A distance of at least<br />
r = 30 mm in radius from the center point of the device to any live<br />
parts must be ensured.<br />
The degree of protection IP20 is a more enhanced protection<br />
against direct contact than "finger-safe". It constitutes protection<br />
against direct contact with electrical equipment from all directions.<br />
Devices with "finger-safe" protection against direct contact<br />
and degree of protection IP00 can be assigned with additional<br />
protection against direct contact by shrouding if required.<br />
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Siemens LV 70 · 2006<br />
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