FFXI Haven - #1.
3-7. Infrared inspections of substations. All matter emits infrared rays in proportion to its temperature. a. Method. An infrared detecting device can be used to determine loose connections, overloading of conductors, localized overheating in equipment, or similar conditions before they become serious. Some equipment is sensitive to a fraction of a degree. Infrared inspection can be done from a distance, since contact with the item being measured is not required. Substation equipment, such as bare bus, disconnect switches, and connections, can be checked without being de-energized. The inspection is made by aiming the infrared detector at various areas of the substation and noting where the hot spots are.
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TM 5-684/NAVFAC MO-200/AFJMAN 32-1082
b.Equipment. Several types of infrared detectors are available. These vary from a simple hand-held instrument similar to a gun, through which the operator can detect hot spots and note their locations, to complex equipment requiring qualified operators and product photographs as a permanent record of the area being checked. The simpler detectors are usually sold outright, while the complex items are usually used by infrared detection services which contract to do the work. Having an instrument readily available can be justified for a large installation with several substations, while a contract to have a survey performed would probably be better for a small installation. Easy Access To All Pages 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 |
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