UL 913-2013 pdf download

UL 913-2013 pdf download.Intrinsically Safe Apparatus and Associated Apparatus for Use in Class l, ll, and lIll,Division 1,Hazardous (Classified) Locations.
6) The maximum rms ac or dc Urn that can be applied to terminals of non-intrinsically sate apparatus or associated apparatus.
10.3 Terminals, terminal boxes, and plugs and receptacles for connection to intrinsically safe circuits shall be clearly identified and clearly distinguishable. If color only is used to cornply with this requirement, the color shall be light blue.
10.4 Battery-powered apparatus shall be marked as follows:
a) A caution statement to indicate the type. size, and voltage of batteries to be used, or indicate the specific battery by manufacturer and model number or equivalent to be used.
b) In addition, for battery assemblies with two or more replaceable batteries, the apparatus shall be marked with the following warning or equivalent:
“Warning’ To reduce the risk of explosion do not mix old batteries with used batteries, or mix batteries from different manufacturers.
C) It the batteries used are not intrinsically safe, the apparatus shall be marked with the following or equivalent:
“Warning’ To reduce the risk of ignition of a flammable or explosive atmosphere, batteries must be changed only in a location known to be non-hazardous.”
10.5 Apparatus or battery packs provided with external contacts for recharging the batteries shall be marked with the following, or equivalent: “CAUTION: To reduce the risk of explosion, recharge the batteries outside of the hazardous location.”
Exception: Apparatus or battery packs investigated and found acceptable for recharging in the hazardous location need not be provided with this marking. In this case, the batter, charger shall be investigated and the marking shall specify the acceptable charger.
11 Zone Equivalency Markings
11.1 Zone 20, Group lilA
11.1.1 Intrinsically safe apparatus that complies with all the applicable requirements for Class Ill hazardous (classified) locations in accordance with 6.2.1 may additionally or alternatively be marked for use in Zone 20, Group lilA.
11.1.2 Associated apparatus that provides intrinsically safe circuits that comply with all the applicable requirements for Class Ill hazardous (classified) locations in accordance with 6.2.1 may additionally or alternatively be marked as providing intrinsically safe circuits for use in Zone 20, Group IIIA.
11.2 Zone 20, Group IIIB
11.2.1 Intrinsically safe apparatus that complies with all the applicable requirements for Class II, Group F, Group G or both Groups F and G hazardous (classified) locations in accordance with 6.3.1 may additionally or alternatively be marked for use in Zone 20, Group lllB.
11.2.2 Associated apparatus that provides intrinsically safe circuits that comply with all the applicable requirements for Class II, Group F, Group G or both Groups F and G hazardous (classified) locations in accordance with 6.3.1 may additionally or alternatively be marked as providing intrinsically sate circuits for use in Zone 20, Group IlIB.
11.2.3 Apparatus marked for Group IIIB is not prohibited from also being marked for Group lilA.
11.3 Zone 20, Group 1IIC
11.3.1 Intrinsically sate apparatus that complies with all the applicable requirements for Class II. Group E hazardous (classified) locations in accordance with 6.4.1 may additionally or alternatively be marked for use in Zone 20, Group IIIC.
11.3.2 Associated apparatus that provides intrinsically safe circuits that comply with all the applicable requirements in Class II, Group E hazardous (classified) locations in accordance with 6.4.1 may additionally or alternatively be marked as providing intrinsically safe circuits for use in Zone 20, Group ilIC.
11.3.3 Apparatus marked for Group INC is not prohibited from also being marked for Group lilA, Group IlIB, or both Groups lIlA and lIB.