IEC 60364 Electrical Installations for Buildings

IEC 60364 Electrical Installations for Buildings is the International Electro technical Commission's international standard on electrical installations of buildings. This standard is an attempt to harmonize national wiring standards in an IEC standard. The latest versions of many European wiring regulations (e.g., BS 7671 in the UK) follow the section structure of IEC 60364 very closely, but contain additional language to cater for historic national practice and to simplify field use and determination of compliance by electrical tradesmen and inspectors. National codes and site guides are meant to attain the common objectives of IEC 60364, and provide rules in a form that allows for guidance of persons installing and inspecting electrical systems.

The standard has several parts:

 

Part 1: Fundamental principles, assessment of general characteristics, definitions

Part 4: Protection for safety

Section 41: Protection against electric shock

Section 42: Protection against thermal effects

Section 43: Protection against overcurrent

Section 44: Protection against voltage disturbances and electromagnetic disturbances

Part 5: Selection and erection of electrical equipment

Section 51: Common rules

Section 52: Wiring systems

Section 53: Isolation, switching and control

Section 54: Earthing arrangements, protective conductors and protective bonding conductors

Section 55: Other equipment

Section 56: Safety services

Part 6: Verification

Part 7: Requirements for special installations or locations

Section 701: Electrical installations in bathrooms

Section 702: Swimming pools and other basins

Section 703: Rooms and cabins containing sauna heaters

Section 704: Construction and demolition site installations

Section 705: Electrical installations of agricultural and horticultural premises

Section 706: Restrictive conductive locations

Section 708: Electrical installations in caravan parks and caravans

Section 709: Marinas and pleasure craft

Section 710: Medical locations

Section 712: Solar photovoltaic (PV) power supply systems

Section 713: Furniture

Section 714: External lighting

Section 715: Extra-low-voltage lighting installations

Section 717: Mobile or transportable units

Section 740: Temporary electrical installations for structures, amusement devices and booths at fairgrounds, amusement parks and circuses

 

Wikipedia

The OSHA electrical standards

DOWNLOAD :

 

https://www.osha.gov/dte/library/electrical/electrical.pdf

Regulations for the Installation of Electrical Wiring, Electrical Equipment and Air Conditioning Equipment (Qatar General Electricity & Water Corporation "KAHRAMAA")

 

DOWNLOAD :

http://www.km.com.qa/sitecollectiondocuments/service%20regulations/en/regulationsfortheinstallationofelectricalwiringele.pdf

Electronic starters and variable speed drives Schneider-electric Cahier technique no. 208

DOWNLOAD :

http://www2.schneider-electric.com/documents/technical-publications/en/shared/automation/automation-information-networks/ect208.pdf

Electric Motors and Variable Speed Drives

 

DOWNLOAD :

 

http://www.cemep.org/fileadmin/downloads/CEMEP_Motors_and_VSD.pdf

ABB Guide to variable speed drives

DOWNLOAD :

http://www05.abb.com/global/scot/scot201.nsf/veritydisplay/d3c711ec2acddb18c125788f002cf5da/$file/ABB_Technical_guide_No_4_REVC.pdf

 

Electrical Switchboard Routine Tests

Physical Check

·         Visual check for any physical damages on the enclosures, paint removal and breakage on components

·         Paint shade as per the approved drawings.

·         Cable feeding provisions

·         General layout of the panel.

·         Check whether all the components are fitted.

·         Check for the Labels and nomenclature

·         Size of Bus bars

Dimensional Check

·         Over all dimensions with approved drawings.

·         List of components its layouts

·         Labels descriptions

Wiring and Control Circuit Check

·         Instrument panel wiring.

·         Control circuit wiring.

·         Power wiring.

·         Protective circuits

·         Rating of breakers

·         Rated voltage of all components

·         Rating of Fuses

Mechanical Operations

·         ON/OFF operations of the circuit breakers by manually.

·         Draw out operations of the withdrawable breakers

·         Breaker interlocking mechanism

·         Electronic protection device of the breakers

·         Operations of the control components like control switches, limit switches etc.

·         Operations of the door interlocking mechanism.

Electrical Operations

·         Electrical ON/OFF operations of the circuit breakers.

·         Electrical functioning of Starters.

·         Operations of components, contactors, control relays, push buttons, indications lamps etc.

·         Checking of electrical interlocking and sequences.

·         Checking of instruments

·         Checking additional protection relays as Ground Fault & Earth Leakage

Torque Test

·         Check all joints of electrical current carrying parts to ensure the tightness by torque range

·         Bus bar joints

·         Breaker terminals

Insulation Resistance Test

·         To check the protective measure of the insulation value

·         To check the continuity of the circuits.

Dielectric Test

Dielectric Test is conducted as per IEC on the power circuits (excluding controls, instruments and electronic components etc.) The test voltage 2.5KV is applied for a period of 1 min. in between

·         1. Phase and phase

·         2. Phase and neutral

·         3. Phase, neutral and earth