General rules of electrical installation design

THE UNIVERSITY OF TECHNICAL EDUCATION
THE UNIVERSITY OF TECHNICAL EDUCATION
HO CHI MINH CITY
HO CHI MINH CITY
FACULTY OF ELECTRICAL
FACULTY OF ELECTRICAL
& ELECTRONICS
& ELECTRONICS
ENGINEERING
ENGINEERING
DIVISION OF INDUSTRIAL ELECTRICSITY
DIVISION OF INDUSTRIAL ELECTRICSITY
Subject : General rules of electrical installation design
Subject : General rules of electrical installation design


Name : Nguyễn Thanh Sơn
Name : Nguyễn Thanh Sơn


ID:05102103
ID:05102103
Ho Chi Minh City 2/21/2009
Ho Chi Minh City 2/21/2009
Objective and content
Objective and content
-Objective :
After I finished this subject ,every body can understand more
detail of electrical installation design and I have an good job when I
graduated.
-Content :

+
+Definition of voltage ranges
+Standards
+Quality and safety of an electrical installation
+Initial testing of an installation
+Periodic check-testing of an installation
+Environment
Definition of voltage ranges
Definition of voltage ranges
IEC voltage standards and recommendations
The nominal voltage of existing 220/380 V and 240/415 V systems shall
evolve toward the recommended value of 230/400 V.
-First step, 220/380 V systems →230/400 V (+6%,-10%) and
240/415 V systems → 230/400 V (+10%,-6%).
-At the end of this transition period, 230/400 V systems (±10%)
should have been achieved.
-Apply also for 380/660 →400/690 V
Standards
Standards
This Guide is based on relevant IEC standards, in
particular IEC 60364.
-IEC 60364-4-41 - Protection for safety - Protection against electric
shock
-IEC 60364-4-42 - Protection for safety - Protection against thermal
effects.
-IEC 60947-1 Low-voltage switchgear and control gear - General
rules
-IEC 60947-2 Low-voltage switchgear and control gear - Circuit-

breakers.
-IEC 60479-1 Effects of current on human beings and livestock - General
aspects…etc.
Quality and safety of an electrical installation
Quality and safety of an electrical installation
-Quality and safety will be assured only if:
+The initial checking of conformity of the electrical installation with
the standard and regulation has been achieved .
+ The electrical equipment comply with standards.
+The periodic checking of the installation recommended by the
equipment manufacturer is respected.