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E
Electrical Conversions
It is often necessary take certain electrical values (such as volts, amps, and
watts) and convert them into other electrical values (such as kW, kVA and
Btu). These values are used to calculate overall power, heating, and cooling
requirements for customer sites.
This appendix describes how to take basic electrical values and convert them
into these other types of electrical values.
Note:
Not all of these are conversions, but formulas where using any two
known values allow you to calculate a third.
Symbolic
To Find Volts, Watts, and Amperes
When Watts and Amperes are known:
Watts divided by Amps =
Volts
or W
÷
A = V
When Amps and Volts are known:
Amps multiplied by Volts =
Watts
or A
x
V = W
When Watts and Volts are known:
Watts divided by Volts =
Amps
or W
÷
V = A
For example:
Given the following values you can use any two values to
calculate a third Watts = 2400 (2.4 kW), Volts = 120, Amps = 20.
2.4 kW
÷
20 A = 120 V
120 V
x
20 A = 2,400 W (or 2.4 kW)
2,400 W
÷
120 V = 20 A
A
= Amperes (Amps)
PF
= Power Factor
Btu
= British Thermal Unit
V
= Volts
kVA
= Kilovolt-amperes
VA
= Volt-amperes
kW
= Kilowatts
W
= Watts
Содержание StorageTek StreamLine SL8500
Страница 4: ...Summary of Changes iv SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 12: ...Contents xii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 18: ...Tables xviii SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 76: ...Introduction 56 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 97: ...E24254 01 Chapter 3 Site Survey Forms 77 Site Survey Forms Figure 21 Content Management Plan ...
Страница 98: ...Site Survey Forms 78 SL8500 Systems Assurance Guide July 2011 E24254 01 Figure 21 Content Management Plan ...
Страница 137: ...E24254 01 Chapter 4 Site Preparation 117 Site Preparation ...
Страница 138: ...Site Preparation 118 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 163: ...E24254 01 Appendix A Content Management 141 Content Management Figure 47 Content Management Work Sheets ...
Страница 164: ...Content Management 142 SL8500 Systems Assurance Guide July 2011 E24254 01 Figure 47 Content Management Work Sheets ...
Страница 198: ...Electrical Conversions 176 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 206: ...Comparisons 184 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 233: ...E24254 01 Appendix H Partitioning 211 Partitioning Make copies as necessary ...
Страница 240: ...Partitioning 218 SL8500 Systems Assurance Guide July 2011 E24254 01 ...
Страница 251: ...E24254 01 Appendix J Work Sheets 229 Work Sheets Figure 73 Content Management Work Sheet ...
Страница 276: ...Index 254 SL8500 Systems Assurance Guide June 2011 E24254 01 ...
Страница 277: ......
Страница 278: ...Oracle Corporation Worldwide Headquarters 500 Oracle Parkway Redwood Shores CA 94065 U S A ...