توضیحات
ماژول بریر برند Siemens مدل SB3
(Siemens Brand Barrier Module Model SB3)
Description
This barrier is needed for an intrinsically safe installation in explosion-hazard areas connected to the in-/output module.
This barrier restricts the electrical energy between non-intrinsically safe and intrinsically safe circuits.
The installation has to be done according to the national safety regulations.
The SB3 has to be mounted into the housing DCA1191 together with the Z3I410 installation set.
Always install safety barriers outside explosion-hazard areas.
For applications with Ex detectors
Safety barrier SB2 for direct connection to the collective detection line insert E3M080
Safety diode barrier SB3 with input/output module DC1192/FDCIO223/FDCI223/FDCI723
If fire detectors have to be installed in explosion-hazard areas, the wiring and equipment
must comply with the local national safety regulations.
Normally, fire detector circuits require very little current and for this application, the
explosion protection category ‘Intrinsic safety’ Ex i is suitable.
The standards which cover this are EN 50014 (EN 60079-0) and EN 50020 (EN 60079-11).
A safety barrier restricts the electrical energy between non-intrinsically safe and intrinsically safe circuits.
Safety barriers are designed to restrict electrical power to such a degree that electrical sparks cannot ignite a gas mixture.
Safety barriers SB2 and SB3 are approved for explosion protection category [Ex ia] IIC/IIB.
Only electrical equipment which complies with the local national regulations and intrinsically
safe protection category Ex ia or ib may be connected to the output of the safety barriers.
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