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What is an aM fuse?
An aM fuse is usually an industrial fuse with an operating characteristic designed to protect inductive loads e.g. motors. Using a general purpose 'gG' fuse in such an application could lead to nuisance operation because the fuse cannot withstand the initial start-up surge.
What is the difference between gG fuse and gM fuse?
The main differences between domestic and industrial fuses are the nominalvoltage and current levels (which require much larger physical dimensions) andtheir fault-current breaking capabilities. Type gG fuse-links are often used for theprotection of motor circuits, which is possible when their characteristics are capableof withstanding the motor-starting current without deterioration.A more recent development has been the adoption by the IEC of a fuse-type gM formotor protection, designed to cover starting, and short-circuit conditions. This type offuse is more popular in some countries than in others, but at the present time theaM fuse in combination with a thermal overload relay is more-widely used.A gM fuse-link, which has a dual rating is characterized by two current values. Thefirst value In denotes both the rated current of the fuse-link and the rated current ofthe fuseholder; the second value Ich denotes the time-current characteristic of thefuse-link as defined by the gates in Tables II, III and VI of IEC 60269-1.These two ratings are separated by a letter which defines the applications.For example: In M Ich denotes a fuse intended to be used for protection ofmotor circuits and having the characteristic G. The first value In corresponds tothe maximum continuous current for the whole fuse and the second value Ichcorresponds to the G characteristic of the fuse link. For further details see note at theend of sub-clause 2.1.An aM fuse-link is characterized by one current value In and time-currentcharacteristic as shown in Figure H14 next page.Important: Some national standards use a gI (industrial) type fuse, similar in all mainessentails to type gG fuses.Type gI fuses should never be used, however, in domestic and similar installations.vu_ld
What is DO and HG fuse?
H.G. Fuse - Horn Gap Fuse D.O.Fuse - Drop Out Fuse
How do you identify if an English Electric HRC fuse CSA C22.2 No. 106 is type J?
Usually the type of fuse is encoded into the fuse number. For example a English Electric fuse C20J, the C represents that the fuse is a cartridge type, the 20 is the amperage of the fuse and the J represents the speed of the fuse. Also the J states that the fuse is a type J fuse.
What is ling carry adder?
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