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21 Cards in this Set
- Front
- Back
Kh |
Watt hours constant Example, 1.8, 3.6 ,7.2 |
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Kr |
Dial multiplier, dial reading times the multiplier for actual kilowatt hours consumed |
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Rr |
Register ratio: registers drive gear revolutions compared to one revolution of the fastest dial on register (Exp. 13 8/9, 27 7/9) |
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Rs |
Staff reduction Number of disk revolutions to turn registers drive, one revolution, typically (1/00) |
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TF |
Transformer factor, transformer ratio |
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RF |
Rating factor, how many times the ct can operate over its base rating... |
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White dot |
Is always the X1 or H1 |
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6 major parts of a mechanical meter |
1.cover 2. Register 3.disk 4.frame 5.stator motor 6. Base |
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Meter covers |
Glass or polycarbonate |
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Nameplate information |
Who made it What kind it is Type (I-30) Kh( watt hours per revolution Tested amps Voltage Cycles Form Class |
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3 different registers |
Clock type, cyclometer(digits), &digital |
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Register drive gear meshes with? Rs |
Worm gear Typically 100:1 |
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Rr is 13 8/9 What does 13 8/9 stand for |
It will turn 13 8/9 times to turn the smallest number on register |
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Disk is made up of? |
2 like magnets on disk so it will float with no drag
Has rough edges so the magnetic field can turn disk
Anti creep holes drilled in disk so it will stop with no load |
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Motor(stator) is made up of |
Potential transformer(vt) Current transformer |
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Current thru current transformer had to go which way? |
Opposite |
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The dampening magnets |
Adjusts the amount of magnetism to adjust the speed of disk (calibrate the motor correctly) |
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Frame is made up of what material? |
Cast aluminum
Cast iron will become magnetized |
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The number of watthours represented by one revolution of the disk, determined by the design of the meter and not normally changed, also called disk constant |
Mechanical meter(Kh) |
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The number of watt hours represented by one increment... Pulse period Or one complete crawl of the pulses (dots) |
Electric meter (Kh or kt) |
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3 types of meter bases |
A base S or socket type K type or bolt in. Base
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