• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/21

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

21 Cards in this Set

  • Front
  • Back

Kh

Watt hours constant


Example, 1.8, 3.6 ,7.2

Kr

Dial multiplier, dial reading times the multiplier for actual kilowatt hours consumed

Rr

Register ratio: registers drive gear revolutions compared to one revolution of the fastest dial on register


(Exp. 13 8/9, 27 7/9)

Rs

Staff reduction


Number of disk revolutions to turn registers drive, one revolution, typically (1/00)

TF

Transformer factor, transformer ratio

RF

Rating factor, how many times the ct can operate over its base rating...

White dot

Is always the X1 or H1

6 major parts of a mechanical meter

1.cover


2. Register


3.disk


4.frame


5.stator motor


6. Base

Meter covers

Glass or polycarbonate

Nameplate information

Who made it


What kind it is


Type (I-30)


Kh( watt hours per revolution


Tested amps


Voltage


Cycles


Form


Class

3 different registers

Clock type, cyclometer(digits), &digital

Register drive gear meshes with? Rs

Worm gear


Typically 100:1

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

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

Motor(stator) is made up of

Potential transformer(vt)


Current transformer

Current thru current transformer had to go which way?

Opposite

The dampening magnets

Adjusts the amount of magnetism to adjust the speed of disk (calibrate the motor correctly)

Frame is made up of what material?

Cast aluminum



Cast iron will become magnetized

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)

The number of watt hours represented by one increment... Pulse period


Or one complete crawl of the pulses (dots)

Electric meter (Kh or kt)

3 types of meter bases

A base


S or socket type


K type or bolt in. Base