CONVERSION TABLE

lighting lux level stantards

1 lx = 1 lm·m-2 = 1 cd·sr·m–2.

As with other SI units, SI prefixes can be used, for example a kilolux (klx) is 1,000 lux.

Illuminance Example

10-5 lux Light from Sirius, the brightest star in the night sky[2]

10-4 lux Total starlight, overcast sky[2]

0.002 lux Moonless clear night sky with airglow[2]

0.01 lux Quarter moon

0.2 lux Design minimum for emergency lighting (AS2293).

0.27 lux Full moon on a clear night[2][3]

1 lux Full moon overhead at tropical latitudes[4]

3.4 lux Dark limit of civil twilight under a clear sky[5]

50 lux Family living room[6]

80 lux Hallway/toilet[7]

100 lux Very dark overcast day[2]

320 lux Recommended office lighting (Australia)[8]

400 lux Sunrise or sunset on a clear day. Well-lit office area.

500 lux Lighting level for an office according to the European law UNI EN12464.

1,000 lux Overcast day[2]; typical TV studio lighting.

10,000–25,000 lux Full daylight (not direct sun)[2]

32,000–130,000 lux Direct sunlight Unicode has a symbol for "lx":

(㏓), but this is just a legacy code to accommodate old code pages in certain Asian languages, and it is not recommended for use in any language today.

Lux versus lumen

The difference between the lux and the lumen is that the lux takes into account the area over which the luminous flux is spread. A flux of 1,000 lumens, concentrated into an area of one square metre, lights up that square metre with an illuminance of 1,000 lux. However, the same 1,000 lumens, spread out over ten square metres, produces a dimmer illuminance of only 100 lux.

Achieving an illuminance of 500 lux might be possible in a home kitchen with a single fluorescent light fixture with an output of 12,000 lumens. To light a factory floor with dozens of times the area of the kitchen would require dozens of such fixtures. Thus, lighting a larger area to the same level of lux requires a greater number of lumens.

Voltage drop

Single phase voltage drop:
Vd = 2K x L x I / Cm or Cm = 2K x L x I / Vd
For both examples: Vd = voltage drop, K= 12.9 for resistance for a copper conductor, L = length of circuit in ft., I = current or amps of the load, Cm = area of the conductor in Circular Mills.
Three phase voltage drop:
Vd = 1.73K x L x I / Cm or Cm = 1.73K x L x I / Vd
The first examples give you the voltage drop if you have the length of the conductor, the current draw of the load in amps and the size of the wire in Circular Mils.
The "or" examples give you the size of of the wire in Circular Mils if you have the length of the conductor, the current draw of the load in amps and the voltage drop you are considering.
I think that the NEC allows a 3% drop for feeders and a 5% drop for branch circuits, but I would have to confirm this in the handbook.
Find the voltage drop on a # 6 THWN copper, 3 wire, 120/240 Volt, single phase feeder circuit of 150 foot length having a 60 A load.
Use the formula above, and substitute the given values.
VD = (2 * 150' * .491 * 60) / 1000' = 8.838 Volts
The voltage drop is 8.838 Volts, we now have to check the % from the overall voltage.
% = (VD / V) * 100
Substituting values gives us: % = 8.838 Volts / 240 Volts = 0.0368 %
This falls above the 3 % max. allowed, so you would check to see if you can use a # 4 THWN copper. (check NEC Chapter 9 Table 8 - Conductor Properties - column- ohm / kft = 0.308)
Do the same as the above example, substituting the resistivity value for # 4 copper, and if the VD falls under the permitted 3 % range then use it!

Example (2) using VD = (2 * L * K * I) / CM
Find the voltage drop on a # 4 THWN copper, 3 wire, 120/240 Volt, single phase feeder circuit of 200 foot length having a 50 A load.
Use the formula above, and substitute the given values.
Use 12 for the resistivity constant for copper
VD = (2 * 200' * 12 * 50) / 41740 = 5.75 Volts
The voltage drop is 5.75 Volts, we now have to check the % from the overall voltage.
% = (VD / V) * 100
Substituting values gives us: % = 5.75 Volts / 240 Volts = 0.0239 %
This falls under the 3 % max. allowed, so you can use it!
Calculating Voltage Drop - 3 Phase
When calculating the voltage drop in 3 phase circuits, do the same as in the single phase but the voltage drop must be multiplied by 0.866. Basically the voltage drop between any two phases conductors is multiplied by (1.732 / 2) = 0.866.
Example
Find the voltage drop and size THWN copper, 120/208 Volt, 3 phase feeder circuit of 200 foot length having a 150 Amp load.
Try 3/O copper with resistivity of 0.0766
Step (1)
VD = (2 * L * R * I ) / 1000 ft = (2 * 200 * 0.0766 * 150) / 1000 ft = 4.596 VD
Step (2) as per 215-2(b)
VD = 4.596 * .866 = 3.98
Step (3)
208 Volts * 3 % = 6.24 Volts (max. allowed)
So, the VD = 3.98 Volts which is below the 6.24 Volts allowed.
Even though this size wire would work, try the next lower size wire to see if that would also work.
The reason is that if you can do the job with a smaller size wire, it will cost you less in supplies and leave you with more profit. (Check the 2/0 copper!)

INDIAN STANDARDS

LIST OF APPLICABLE ELECTRICAL STANDARDS
The relevant applicable standards Indian as well the international are listed below. In case the bidder offers the product of international make then the product shall confirm to the corresponding international standards viz. IEEE/IEC/NEMA etc. Or alternatively the product offered should confirm to Indian Standard.
A. INDIAN STANDARDS
1. General Requirements :
IS – 732 - Code of practice for electrical wiring installations ( System voltage not extending 650 volts )
IS – 900 - Code of practice for installation and maintenance of Induction Motors
IS – 1271- Classification of insulting materials for electrical machinery and apparatus in relation to their thermal stability in service
IS – 1646 - Code of practice for fire safety of buildings (general) Electrical Installations
IS – 1866 - Code of practice for maintenance of insulating oil.
IS – 1882 - Code of practice for outdoor installation of public address systems.
IS – 1886- Code of practice for installation and maintenance of Transformers
IS – 1913- General and safety requirements of electric lighting fittings
IS – 2032- Graphical symbols used in electric technology.
IS – 2165- Guide for insulation coordination
IS – 2274- Code of practice for electrical wiring installations (System voltage exceeding 658 volts)
IS – 2309- Code of practice for the protection of buildings and Allied structures against lightning.
IS – 3034 - Code of practice for fire safety of industrial buildings – Electrical generating and distributing stations.
IS – 3043 - Code of practice for earthing
IS-3072 - Part -1 Code of practice for installation and maintenance of switchgear (System voltage not exceeding 1000 volts)
IS – 3106 - Code of practice for selection, installation and maintenance of fuses (voltage not exceeding 650 volts)
IS – 3638 - Application guide for gas-operated relays.
IS – 3646 - Code of practice for interior illumination.
IS – 3716 - Application guide for insulation coordination – Equipment located in hazardous situations.
IS – 3842 - Application guide for electrical relays for AC system.
IS – 4004 - Application guide for non-linear resisted type lightning arrestors for AC system
IS – 4146 - Application guide for voltage transformers.
IS – 4201- Application guide for current transformers.
IS – 5571- Guide for selection of electrical equipment in hazardous area.
IS – 5572 - Classification of hazardous areas for electrical installations.
IS – 5780 - Intrinsically safe electrical apparatus and circuits.
IS – 5908- Method of measurement of electrical installations in buildings.


A. EQUIPMENT
1. Switchgear
(a) General :
IS – 375 - Marking and arrangement for switchgear bus-bars, main connections and auxiliary winding.
IS – 694 - Part 1 PVC insulated cables ( for voltages up to 100v) with copper conductors.
IS – 1248 - Direct acting electrical indicating instruments.
IS – 2147 - Degrees of protection provided for enclosures for low voltage switchgear and control gear.
IS – 2208 - HRC cartridge fuse links up to 650 V.
IS – 2705 - Part I, II & III – Current transformers.
IS – 3156 - Part I, II & III – Voltage transformers.
IS – 3202- Code of practice for climate proofing of electrical equipment.
IS – 3231 - Electrical relays of power system protection.
IS – 4047- Heavy duty air break switches and composite units of air-break switches and fuses for voltages not exceeding 1000 volts.
IS – 4237 - General requirements for switchgear and control gear for voltages not exceeding 1000V.
IS – 5987 - Code of practice for selection of switches (voltage not exceeding 1000V)

(b) 6.6 KV
IS – 335 - Insulating oil for transformers and switchgear.
IS – 2516 –Part 1 - Sec.2 Alternating current circuit breakers – Requirements and tests for voltage ranges 1000 to 11000 volts.
IS – 3427 - Metal enclosed switchgear and controlgear for voltages above 1000 V but not exceeding 11000 V.

(c) 415 Volts :
IS – 722 - AC electricity meters.
IS – 1951- PVC sleeving for electrical purposes.
IS – 2516 - Part 1- sec.1
Part II/Sec.2- AC circuit breakers – requirements and tests for voltages not exceeding 1000 V.
IS – 2419 - Dimensions of electrical indicating instruments.
BS – 4752 - Circuit breakers of rated voltage up to and including 1000 volts and 1200 volts dc.
BS – 6231 - PVC insulated cables for switchgear wiring.
IEC – 157 - Low voltage distribution switchgear circuit breakers.

(d) M.C.C. :
IS – 1554 -Part I PVC insulated (heavy duty) electric cables for working voltages up to and including 1100 volts.
IS – 1822 - AC motor starters of voltage not exceeding 1000 volts.
IS – 2959 - AC contactors of voltage not exceeding 1000 V.
IS – 3961-Part II Recommended current ratings for PVC insulated and PVC sheathed cables.
IS – 5124 - Code of practice for installation and maintenance of AC induction motor starters (voltage not exceeding 1000V).
IS – 2959 - AC contactors of voltage not exceeding 1000 V.

(e) Invertors :
IS – 391 - Mains transformers for electronic equipment.

2. Transformers :
IS – 335 - Insulating oil for transformers and switchgear.
IS – 2026 - Power transformers.
IS – 2099 - High voltage porcelain bushings.
IS – 3070 - Lightning arrestors for AC systems.
IS – 3637 - Gas operated relays.
IS – 3639 - Fittings and accessories for power transformers

3. Motors :
IS – 325 - Three phase induction motors.
IS – 4691- Degrees of protection provided by enclosures for rotating electrical machinery.
IS – 4722 - Rotating electrical machines

4. Batteries :
IS – 1652 - Stationery cells and batteries, lead-acid type (with plants positive plates).
BS – 440 - Stationery batteries

5. Cables :
IS – 1554 -Part I & II PVC insulated (heavy duty) electric cables for working voltages up to and including 1100 volts and for upto 33 KV.
IS – 1753 - Aluminium conductors for insulated cables.
IS – 3961 - Part II – Recommended current ratings for cables.
IS – 3975 - Mild steel wires, strips and tapes for armouring cables.
IS – 5819 - Recommended short-circuit ratings of high voltage cables.
IS – 5831 - PVC insulation and sheaths of electric cables

6. Altornators :
IS – 7132 - 1973 Guide for testing synchronous machines
IS – 5422 - 1996 Turbine type generators
IS – 7306 - 1974 Methods for determining synchronous machine quantities from tests.
IEC 60028 Ed. - 2.0 b: 1925 International standard of resistance for copper
IEC 60034-1 Ed.11.0 b:2004 Rotating electrical machines – Part 1 : Rating and performance
IEC 60034-11 Ed.2.0 b: 2004 Rotating electrical machines – Part 11 : Thermal protection.
IEC 60034-12 - Ed.2.0 b: 2002 Rotating electrical machines – Part 12 : Starting performance of single-speed three-phase cage induction motors.
IEC 60034-14 -Ed.3.0 b:2003 “Rotating electrical machines – Part 14 : Mechanical vibration of certain machines with shaft heights 56 mm Higher – Measurement, evaluation and limits of vibration severity.
IEC 60034-15 - Ed.2.0 b : 1995 Rotating electrical machines – Part 15 : Impulse voltage withstand levels of rotating a.c.machines with form-wound stator coils.
IEC 60034-16-1 - Ed.1.0 b:1991 Rotating electrical machines – Part 16 : Excitation systems for synchronous machines – Chapter 1 : Definitions.
IEC 60034-18-1 Ed.1.0 b : 1992 Rotation electrical machines – Part 18 : Functional evaluation of insulation systems – Section 1 : General guidelines & Section 21 : Test procedures.
IEC 60034-18-31 Ed 1.0 b : 1992 Rotating electrical machines – Part 18 : Functional evaluation of insulation systems – Section 31 : Test procedures for form-wound windings – Thermal evaluation and classification of insulation systems used in machines up to and including 50 MVA and 15 kV
IEC 60034-2 Ed.3.0 b : 1972 Rotating electrical machines Part 2 : Methods for determining l losses and efficiency of rotating electrical machinery from tests (excluding machines for traction vehicles)
IEC 60034-2A Ed. 1.0 b : 1974 Rotating electrical machines – Part 2 : Methods for determining Losses and efficiency of rotating electrical machinery form tests (excluding machines for traction vehicles) – First supplement : Measurement of losses by the calorimetric method.
IEC 60034-3 Ed. 5.0 b : 2005 Rotating electrical machines – Part 3 : Specific requirements for cylindrical rotor synchronous machines
IEC 60034-4 Ed.2.0 b : 1985 Rotating electrical machines – Part 4 : Methods for determining synchronous machine quantities from tests.
IEC 60034-5 Ed 4.0 b : 2000 Rotating electrical machines – Part 5 : Degrees of protection provided by the integral design of rotating electrical machines (IP code) – Classification.
IEC 60034-6 Ed.2.0 b : 1991 Rotating electrical machines – Part 6 : Methods of cooling (IC code).
IEC 60076-1 Ed.2.1 b : 2000 Power transformers – Part 1 : General
IEC 60076-11 Ed.1.0 b : 2004 Power transformers – Part 11 : Dry-type transformers
IEC 60076-2 Ed.2.0 b: 1993 Power transformers – Part 2 : Temperature rise
IEC 60076-8 Ed.1.0 b:1997 Power transformers – Part 8 : Application guide
IEC 60079-0 Ed.4.0 b:2004 Electrical apparatus for explosive gas atmospheres – Part 0 : General requirements
IEC 60079-10 Ed.4.0 b:2004 Electrical apparatus for explosive gas atmospheres – Part 10 : Classification of hazardous areas
IEC 60086-1 Ed.9.0 en:2000 Primary batteries – Part 1: General
IEC GUIDE III Selection of Rotating Machinery
IEC/TS 60034-16 Power Transformer – General, Selection, Testing etc.
IEC- 62026 Low Voltage Switchgear
IEC-62040 Uninterrupted Power Supplies
IEC-60502 Power Cables Upto 30 Kv-General Requirement, Selection
IEC-60287 Power Cables – Testing
IEC-60255 Requirements For Protective Relays

AUTOCAD SHORTCUT KEYS

Shortcut Command
ALT+F8 VBA Run
ALT+F11 VBA Editor
CTRL+1 Properties Palette
CTRL+2 DesignCenter Palette
CTRL+3 Tool Palette
CTRL+4 Sheet Set Manager Palette
CTRL+5 Info Palette
CTRL+6 DBConnect Manager
CTRL+7 Markup Set Manager Palette
CTRL+A Selects objects in drawing
CTRL+B Toggles Snap
CTRL+C Copies objects to Clipboard
CTRL+SHFT+C Copies objects to Clipboard with Base Point
CTRL+D Toggles coordinate display
CTRL+E Cycles through isometric planes
CTRL+F Toggles running object snaps
CTRL+G Toggles Grid
CTRL+H Toggles PICKSTYLE on/off
CTRL+J Executes last command
CTRL+K Hyperlink
CTRL+L Toggles Ortho mode
CTRL+M (No action)
CTRL+N Creates a new drawing
CTRL+O Opens existing drawing
CTRL+P Prints current drawing
CTRL+Q Exit
CTRL+R Cycles layout viewports
CTRL+S Saves current drawing
CTRL+SHFT+S Saveas
CTRL+T Toggles Tablet mode
CTRL+V Pastes data from Clipboard
CTRL+SHFT+V Pastes data from Clipboard as Block
CTRL+X Cuts objects to Clipboard
CTRL+Y Repeats last action
CTRL+Z Reverses last action
CTRL+[ Cancels current command
CTRL+\ Cancels current command
F1 Displays Help
F2 Toggles text window on/off
F3 Toggles OSNAP
F4 Toggles TABMODE
F5 Toggles ISOPLANE
F6 Toggles COORDS
F7 Toggles GRIDMODE
F8 Toggles ORTHO MODE
F9 Toggles SNAP MODE
F10 Toggles POLAR
F11 Toggles OTRACK
3A *3DARRAY
3DO *3DORBIT
3F *3DFACE
3P *3DPOLY
A *ARC
AC *BACTION
ADC *ADCENTER
AA *AREA
AL *ALIGN
AP *APPLOAD
AR *ARRAY
-AR *-ARRAY
ATT *ATTDEF
-ATT *-ATTDEF
ATE *ATTEDIT
-ATE *-ATTEDIT
ATTE *-ATTEDIT
B *BLOCK
-B *-BLOCK
BC *BCLOSE
BE *BEDIT
BH *HATCH
BO *BOUNDARY
-BO *-BOUNDARY
BR *BREAK
BS *BSAVE
C *CIRCLE
CH *PROPERTIES
-CH *CHANGE
CHA *CHAMFER
CHK *CHECKSTANDARDS
CLI *COMMANDLINE
COL *COLOR
COLOUR *COLOR
CO *COPY
CP *COPY
CT *CTABLESTYLE
D *DIMSTYLE
DAL *DIMALIGNED
DAN *DIMANGULAR
DAR *DIMARC
JOG *DIMJOGGED
DBA *DIMBASELINE
DBC *DBCONNECT
DC *ADCENTER
DCE *DIMCENTER
DCENTER *ADCENTER
DCO *DIMCONTINUE
DDA *DIMDISASSOCIATE
DDI *DIMDIAMETER
DED *DIMEDIT
DI *DIST
DIV *DIVIDE
DJO *DIMJOGGED
DLI *DIMLINEAR
DO *DONUT
DOR *DIMORDINATE
DOV *DIMOVERRIDE
DR *DRAWORDER
DRA *DIMRADIUS
DRE *DIMREASSOCIATE
DRM *DRAWINGRECOVERY
DS *DSETTINGS
DST *DIMSTYLE
DT *TEXT
DV *DVIEW
E *ERASE
ED *DDEDIT
EL *ELLIPSE
EX *EXTEND
EXIT *QUIT
EXP *EXPORT
EXT *EXTRUDE
F *FILLET
FI *FILTER
G *GROUP
-G *-GROUP
GD *GRADIENT
GR *DDGRIPS
H *HATCH
-H *-HATCH
HE *HATCHEDIT
HI *HIDE
I *INSERT
-I *-INSERT
IAD *IMAGEADJUST
IAT *IMAGEATTACH
ICL *IMAGECLIP
IM *IMAGE
-IM *-IMAGE
IMP *IMPORT
IN *INTERSECT
INF *INTERFERE
IO *INSERTOBJ
J *JOIN
L *LINE
LA *LAYER
-LA *-LAYER
LE *QLEADER
LEN *LENGTHEN
LI *LIST
LINEWEIGHT *LWEIGHT
LO *-LAYOUT
LS *LIST
LT *LINETYPE
-LT *-LINETYPE
LTYPE *LINETYPE
-LTYPE *-LINETYPE
LTS *LTSCALE
LW *LWEIGHT
M *MOVE
MA *MATCHPROP
ME *MEASURE
MI *MIRROR
ML *MLINE
MO *PROPERTIES
MS *MSPACE
MSM *MARKUP
MT *MTEXT
MV *MVIEW
O *OFFSET
OP *OPTIONS
ORBIT *3DORBIT
OS *OSNAP
-OS *-OSNAP
P *PAN
-P *-PAN
PA *PASTESPEC
PARAM *BPARAMETER
PARTIALOPEN *-PARTIALOPEN
PE *PEDIT
PL *PLINE
PO *POINT
POL *POLYGON
PR *PROPERTIES
PRCLOSE *PROPERTIESCLOSE
PROPS *PROPERTIES
PRE *PREVIEW
PRINT *PLOT
PS *PSPACE
PTW *PUBLISHTOWEB
PU *PURGE
-PU *-PURGE
QC *QUICKCALC
R *REDRAW
RA *REDRAWALL
RE *REGEN
REA *REGENALL
REC *RECTANG
REG *REGION
REN *RENAME
-REN *-RENAME
REV *REVOLVE
RO *ROTATE
RPR *RPREF
RR *RENDER
S *STRETCH
SC *SCALE
SCR *SCRIPT
SE *DSETTINGS
SEC *SECTION
SET *SETVAR
SHA *SHADEMODE
SL *SLICE
SN *SNAP
SO *SOLID
SP *SPELL
SPL *SPLINE
SPE *SPLINEDIT
SSM *SHEETSET
ST *STYLE
STA *STANDARDS
SU *SUBTRACT
T *MTEXT
-T *-MTEXT
TA *TABLET
TB *TABLE
TH *THICKNESS
TI *TILEMODE
TO *TOOLBAR
TOL *TOLERANCE
TOR *TORUS
TP *TOOLPALETTES
TR *TRIM
TS *TABLESTYLE
UC *UCSMAN
UN *UNITS
-UN *-UNITS
UNI *UNION
V *VIEW
-V *-VIEW
VP *DDVPOINT
-VP *VPOINT
VS *BVSTATE
W *WBLOCK
-W *-WBLOCK
WE *WEDGE
X *EXPLODE
XA *XATTACH
XB *XBIND
-XB *-XBIND
XC *XCLIP
XL *XLINE
XR *XREF
-XR *-XREF
Z *ZOOM
AV *DSVIEWER
CP *COPY
DIMALI *DIMALIGNED
DIMANG *DIMANGULAR
DIMBASE *DIMBASELINE
DIMCONT *DIMCONTINUE
DIMDIA *DIMDIAMETER
DIMED *DIMEDIT
DIMTED *DIMTEDIT
DIMLIN *DIMLINEAR
DIMORD *DIMORDINATE
DIMRAD *DIMRADIUS
DIMSTY *DIMSTYLE
DIMOVER *DIMOVERRIDE
LEAD *LEADER
TM *TILEMODE
SAVEURL *SAVE
OPENURL *OPEN
INSERTURL *INSERT
AAD *DBCONNECT
AEX *DBCONNECT
ALI *DBCONNECT
ASQ *DBCONNECT
ARO *DBCONNECT
ASE *DBCONNECT
DDATTDEF *ATTDEF
DDATTEXT *ATTEXT
DDCHPROP *PROPERTIES
DDCOLOR *COLOR
DDLMODES *LAYER
DDLTYPE *LINETYPE
DDMODIFY *PROPERTIES
DDOSNAP *OSNAP
DDUCS *UCS
ACADBLOCKDIALOG *BLOCK
ACADWBLOCKDIALOG *WBLOCK
ADCENTER *ADCENTER
BMAKE *BLOCK
BMOD *BLOCK
BPOLY *BOUNDARY
CONTENT *ADCENTER
DDATTE *ATTEDIT
DDIM *DIMSTYLE
DDINSERT *INSERT
DDPLOTSTAMP *PLOTSTAMP
DDRMODES *DSETTINGS
DDSTYLE *STYLE
DDUCS *UCSMAN
DDUCSP *UCSMAN
DDUNITS *UNITS
DDVIEW *VIEW
DIMHORIZONTAL *DIMLINEAR
DIMROTATED *DIMLINEAR
DIMVERTICAL *DIMLINEAR
DOUGHNUT *DONUT
DTEXT *TEXT
DWFOUT *PLOT
DXFIN *OPEN
DXFOUT *SAVEAS
PAINTER *MATCHPROP
PREFERENCES *OPTIONS
RECTANGLE *RECTANG
SHADE *SHADEMODE
VIEWPORTS *VPORTS

IEC STANDARDS

IEC 60038 -Standard voltages
IEC 60076-2 Power transformers - Temperature rise
IEC 60076-3 Power transformers - Insulation levels, dielectric tests and external clearances in air
IEC 60076-5 Power transformers - Ability to withstand short-circuit
IEC 60076-10 Power transformers - Determination of sound levels
IEC 60146 Semiconductor convertors - General requirements and line commutated convertors
IEC 60255 Electrical relays
IEC 60265-1 High-voltage switches - High-voltage switches for rated voltages above 1 kV and less than 52 kV
IEC 60269-1 Low-voltage fuses - General requirements
IEC 60269-2 Low-voltage fuses - Supplementary requirements for fuses for use by unskilled persons (fuses mainly for household and similar applications)
IEC 60282-1 High-voltage fuses - Current-limiting fuses
IEC 60287-1-1 Electric cables - Calculation of the current rating - Current rating equations (100% load factor) and calculation of losses - General
IEC 60364 Electrical installations of buildings
IEC 60364-1 Electrical installations of buildings - Fundamental principles
IEC 60364-4-41 Electrical installations of buildings - Protection for safety - Protection against electric shock
IEC 60364-4-42 Electrical installations of buildings - Protection for safety - Protection against thermal effects
IEC 60364-4-43 Electrical installations of buildings - Protection for safety - Protection against overcurrent
IEC 60364-4-44 Electrical installations of buildings - Protection for safety - Protection against electromagnetic and voltage disrurbance
IEC 60364-5-51 Electrical installations of buildings - Selection and erection of electrical equipment - Common rules
IEC 60364-5-52 Electrical installations of buildings - Selection and erection of electrical equipment - Wiring systems
IEC 60364-5-53 Electrical installations of buildings - Selection and erection of electrical equipment - Isolation, switching and control
IEC 60364-5-54 Electrical installations of buildings - Selection and erection of electrical equipment - Earthing arrangements
IEC 60364-5-55 Electrical installations of buildings - Selection and erection of electrical equipment - Other equipments
IEC 60364-6-61 Electrical installations of buildings - Verification and testing - Initial verification
IEC 60364-7-701 Electrical installations of buildings - Requirements for special installations or locations - Locations containing a bath tub or shower basin
IEC 60364-7-702 Electrical installations of buildings - Requirements for special installations or locations - Swimming pools and other basins
IEC 60364-7-703 Electrical installations of buildings - Requirements for special installations or locations - Locations containing sauna heaters
IEC 60364-7-704 Electrical installations of buildings - Requirements for special installations or locations - Construction and demolition site installations
IEC 60364-7-705 Electrical installations of buildings - Requirements for special installations or locations - Electrical installations of agricultural and horticultural premises
IEC 60364-7-706 Electrical installations of buildings - Requirements for special installations or locations - Restrictive conducting locations
IEC 60364-7-707 Electrical installations of buildings - Requirements for special installations or locations - Earthing requirements for the installation of data
processing equipment
IEC 60364-7-708 Electrical installations of buildings - Requirements for special installations or locations - Electrical installations in caravan parks and caravans
IEC 60364-7-709 Electrical installations of buildings - Requirements for special installations or locations - Marinas and pleasure craft
IEC 60364-7-710 Electrical installations of buildings - Requirements for special installations or locations - Medical locations
IEC 60364-7-711 Electrical installations of buildings - Requirements for special installations or locations - Exhibitions, shows and stands
IEC 60364-7-712 Electrical installations of buildings - Requirements for special installations or locations - Solar photovoltaic (PV) power supply systems
IEC 60364-7-713 Electrical installations of buildings - Requirements for special installations or locations - Furniture
IEC 60364-7-714 Electrical installations of buildings - Requirements for special installations or locations - External lighting installations
IEC 60364-7-715 Electrical installations of buildings - Requirements for special installations or locations - Extra-low-voltage lighting installations
IEC 60364-7-717 Electrical installations of buildings - Requirements for special installations or locations - Mobile or transportable units
IEC 60364-7-740 Electrical installations of buildings - Requirements for special installations or locations - Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses
IEC 60427 High-voltage alternating current circuit-breakers
IEC 60439-1 Low-voltage switchgear and controlgear assemblies - Type-tested and partially type-tested assemblies
IEC 60439-2 Low-voltage switchgear and controlgear assemblies - Particular requirements for busbar trunking systems (busways)
IEC 60439-3 Low-voltage switchgear and controlgear assemblies - Particular requirements for low-voltage switchgear and controlgear assemblies intended to be installed in places where unskilled persons have access for their use - Distribution boards
IEC 60439-4 Low-voltage switchgear and controlgear assemblies - Particular requirements for assemblies for construction sites (ACS)
IEC 60446 Basic and safety principles for man-machine interface, marking and identification - Identification of conductors by colours or numerals
IEC 60439-5 Low-voltage switchgear and controlgear assemblies - Particular requirements for assemblies intended to be installed outdoors in public places - Cable distribution cabinets (CDCs)
IEC 60479-1 Effects of current on human beings and livestock - General aspects
IEC 60479-2 Effects of current on human beings and livestock - Special aspects
IEC 60479-3 Effects of current on human beings and livestock - Effects of currents passing through the body of livestock
IEC 60529 Degrees of protection provided by enclosures (IP code)
IEC 60644 Spécification for high-voltage fuse-links for motor circuit applications
IEC 60664 Insulation coordination for equipment within low-voltage systems
IEC 60715 Dimensions of low-voltage switchgear and controlgear. Standardized mounting on rails for mechanical support of electrical devices in switchgear and controlgear installations.
IEC 60724 Short-circuit temperature limits of electric cables with rated voltages of 1 kV (Um = 1.2 kV) and 3 kV (Um = 3.6 kV)
IEC 60755 General requirements for residual current operated protective devices
IEC 60787 Application guide for the selection of fuse-links of high-voltage fuses for transformer circuit application
IEC 60831 Shunt power capacitors of the self-healing type for AC systems having a rated voltage up to and including 1000 V - General - Performance, testing and rating - Safety requirements - Guide for installation and operation
IEC 60947-1 Low-voltage switchgear and controlgear - General rules
IEC 60947-2 Low-voltage switchgear and controlgear - Circuit-breakers
IEC 60947-3 Low-voltage switchgear and controlgear - Switches, disconnectors, switch-disconnectors and fuse-combination units
IEC 60947-4-1 Low-voltage switchgear and controlgear - Contactors and motor-starters - Electromechanical contactors and motor-starters
IEC 60947-6-1 Low-voltage switchgear and controlgear - Multiple function equipment - Automatic transfer switching equipment
IEC 61000 Electromagnetic compatibility (EMC)
IEC 61140 Protection against electric shocks - common aspects for installation and equipment
IEC 61557-1 Electrical safety in low-voltage distribution systems up to 1000 V AC and 1500 V DC - Equipment for testing, measuring or monitoring of protective measures - General requirements
IEC 61557-8 Electrical safety in low-voltage distribution systems up to 1000 V AC and 1500 V DC - Equipment for testing, measuring or monitoring of protective measures
IEC 61557-9 Electrical safety in low-voltage distribution systems up to 1000 V AC and 1500 V DC - Equipment for insulation fault location in IT systems
IEC 61557-12 Electrical safety in low-voltage distribution systems up to 1000 V AC and 1500 V DC - Equipment for testing, measuring or monitoring of protective measures. Performance measuring and monitoring devices (PMD)
IEC 61558-2-6 Safety of power transformers, power supply units and similar - Particular requirements for safety isolating transformers for general use
IEC 62271-1 Common specifications for high-voltage switchgear and controlgear standards
IEC 62271-100 High-voltage switchgear and controlgear - High-voltage alternating-current circuit-breakers
IEC 62271-102 High-voltage switchgear and controlgear - Alternating current disconnectors and earthing switches
IEC 62271-105 High-voltage switchgear and controlgear - Alternating current switch-fuse combinations
IEC 62271-200 High-voltage switchgear and controlgear - Alternating current metal-enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV
IEC 62271-202 High-voltage/low voltage prefabricated substations