290
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chapter
Memorandum
Presentation:
• Fundamental laws which reign in the electrical and
mechanical universe.
• Tables of the main quantities and constants.
• Measurement units and symbols, and conversion
tables with common units.
• Neutral regimes.
Summary
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291
1
2
3
4
5
6
7
8
9
10
11
12
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M.1 Quantities and units of measurement
292
M.2 Average full-load currents of asynchronous squirrel cage motors
293
M.3 Electrical formulae
294
M.4 Calculation of starting resistances
296
M.5 Mechanical formulae
297
M.6 Fundamental formulae
298
M.7 Neutral connections
299
M.8 Driving machines
300
M.9 Conversion tables for standard units
302
M.1
Quantities and units of measurement
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292
M.1
Quantities and units of measurement
M.2
Average full-load currents of
asynchronous squirrel cage motors
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293
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M.2
Average full-load currents of asynchronous squirrel cage motors
M.3
Electrical formulae
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294
M.3
Electrical formulae
M.3
Electrical formulae
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Ohm’s Law
Circuits comprising resistance and reactance
Different types of resistive circuits
SYMBOLS
U = Voltage in volts
I = Current in amperes
R = Resistance in ohms
P = Power in watts
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M.4
Calculation of starting resistances
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M.4
Calculation of starting resistances
M.5 Mechanical formulae
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297
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M.5 Mechanical formulae
M.6
Fundamental formulae
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298
M.6
Fundamental formulae
M.7
Neutral connections
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M.7
Neutral connections
M.8
Driving machines
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M.8
Driving machines
M.8
Driving machines
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301
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M.9
Conversion tables for standard units
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302
M.9
Conversion tables for standard units
M.9
Conversion tables for standard units
M. Memorandum
303
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