Cold Weather Catalog - Chromalox Precision Heat and Control

Heating CableSRM/ESelf-RegulatingMedium TemperatureDE C B A• Self-Regulating, Energy Efficient• 14 AWG Buss Wire• Circuit Lengths to 780 Feet• Process TemperatureMaintenance to 302°F (150°C)• Maximum Continuous ExposureTemperature, Power Off, 420°F(215°C)• Industrial Process MaintenanceApplications• Industrial Freeze ProtectionApplications• Freeze Protection of FireProtection System Piping• Steam Cleanable on ProcessEquipment Up to 300 PSIG• 3, 5, 8, 10, 15 and 20 W/Ft.• 120 and 208 - 277 Volt FromStock• Approximate Size 1/2"W x 1/4"H• Minimum Bend Radius 1-1/2"• For Use on Metallic Pipes OnlyDescriptionChromalox SRM/E self-regulating heatingcable provides safe, reliable heat tracingfor process temperature maintenance andfreeze protection of pipes, valves, tanks andsimilar applications. Constructed of industrialgrade 14 AWG buss wire with metal braidand optional overjacketing, SRM/E ensuresoperating integrity in most hostile industrialenvironments. The 420°F (215°C) maximumexposure temperature rating allows steamcleaning of process equipment with up to 300psig steam.Enhanced Features• Industrial Grade, 14 gauge buss wire hashigher current capacity, allowing longercircuit lengths up to 780 feet.• Superior matrix to buss wire bonding ensuresoverall operating integrity and performance.Cut to Lengthin FieldCan beOverlapped• High output, 20 W/Ft. heating cable.• All ratings are available from stock.Features• Energy effi cient, self-regulating SRM/E usesless energy when less heat is required.• Easy to install, SRM/E can be cut to anylength (up to max. circuit length) in the fi eld.• Field splices can be performed easily in minuteswith no scrap or wasted cold sections.• With lower installed cost than steam tracing,SRM/E features less maintenance expenseand downtime.• SRM/E can be overlapped without burnout,which simplifi es heat tracing of in-line processequipment such as valves, elbows andpumps.• Because SRM/E is self-regulating, overtemperatureconditions are minimized.• Chromalox termination, splice, tee and endseal kits reduce installation time.ConstructionA Twin 14 AWG Copper Buss Wires —Provide reliable electrical currentcapability.B Semiconductive Polymer Core Matrix —“Self-Regulating” component of the cable,its electrical resistance varies withtemperature. As process temperaturedrops, the core’s heat output increases;as process temperature rises, the heatoutput decreases.C High Temperature Fluoropolymer Jacket— Flame retardant, electrically insulatesthe matrix and provides corrosionresistance.D Metallic Braid — Provides additionalmechanical protection in any environmentand a positive ground path.Maintains up to302°FWithstands up to420°FMedium TemperatureEOutputTemperatureSelf RegulatingOutputHigh Temperature FluoropolymerOverjacket (optional) — Corrosionresistant, fl ame retardant overjacket ishighly effective in hostile, aqueous andchemically active environments. It alsoprotects against abrasion and impactdamage.ApprovalsATEX and IECEX Exe IIGb, Factory Mutual(FM) Approved for ordinary areas. UL Listed,CSA Certifi ed for ordinary areas. UL listed forfreeze protection of fi re protection systempiping. FM Approved for hazardous (classifi ed)areas when used with U Series, DL and ELaccessories:• Class I, Div. 2, Groups B, C, D (gases,vapors)• Class II, Div. 2, Groups F, G (combustibledust)• Class III, Div. 2 (easily ignitable fi bers andfi lings)• 3, 5 and 8 Watt Rated T3 Temperature Class• 10, 15 and 20 Watt Rated T2DTemperature ClassCSA Certifi ed for hazardous (classifi ed) areaswhen used with DL accessories:• Class I, Div. 2, Groups A, B, C, D• Class II, Div. 2, Groups F, G• Rated T3 1 Temperature Class.• ATEX and IECEX Exe IIGb• IIG Exe IINote 1 Exception — Cable Surface Temperatureshall not exceed 190°C in Class II, Div. 2,Group F; 165°C in Class II, Div. 2, Group G.88