Parker Lucifer - Coeva

8700/GB3.7 Intrinsically safe electrical parts “i”:Intrinsic safetyA system or an element of a system in an hazardous area is intrinsically safe when in any circumstance no explosion canbe caused by either a spark or other heat source. The power level of an intrinsically safe electrical system is thereforeextremely low.ApplicationIntrinsically safe valves are recommended or even compulsory where the highest safety level against explosions isrequired: chemical industry, refineries, mines, on-and off-shore platforms, etc. In addition to the «intrinsic safety»characteristic, a remarkable low power consumption is needed to control such valves. They can be triggered directly froman electronic circuit such as in a computerised system as they require neither relay nor amplifier.Safety barriersEach electrical apparatus, e.g. solenoid valves within the hazardous area must be further protected by safety barriers.Lucifer solenoid operators are compatible with commercially available safety barriers (see guidance chart page 39 to 44).In order to determine whether a barrier is compatible, one must be fully aware of its electrical characteristics.Minimum voltage calculations for proper valve functioning must be made with the total resistance value of barrier, coil (hot) andwiring (total length), and with the maximum ambient temperature.Electrical suplyParker Lucifer intrinsically electrical parts may only be fed from:•Certified I.S, power supplies or• Through an adequate intrinsic safe safety barrier• Through intrinsically safe Remote I/OInstallation sketch34 Parker Lucifer SA362 Fluid Parker Control Lucifer Division SA EuropeCH-1227 Fluid Control Carouge-GenèveDivision EuropeCH-1227 Carouge-Genève