FFXI Haven - #1.
socket before inserting the socket into the receptacle. If the socket is replaced before putting the lamp in it, the film cutout will puncture. Never re-use a punctured film disk. Paper, cardboard, or other insulation should never be used as a substitute for the film cutout. 6-15. Series type lighting power supply equipment. The main item of power supply equipment is the constant-current transformer to supply the series circuit power. The other item is the insulating transformer, whose main purpose is to isolate each luminaire to prevent an open circuit when a lamp burns out. a.Constant-current transformers. The transformer (usually called a regulator) has a movable secondary winding that automatically changes position to provide a constant-current output for any varying load impedance, within its rating, when supplied from an approximately constant-voltage source. The balance point between coil weight and magnetic force may be adjusted to provide the desired output current. Most existing constant-current transformers are oil-insulated; but dry type units, which are not much larger, are available and should be considered for replacement of failed oil-insulated units whenever possible. (1)Loading. Constant-current regulators should be loaded as near to 100 percent as possible. It is generally accepted that overheating will not be caused by any load between 50 percent and 100 percent of rated kW. Regulators, unlike transformers, are rated in kW, not kVA. (2)Operation. 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 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 |
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