Thursday, August 29, 2013

Schneider Electric - Low voltage switchboards Quality inspection guide

 

1. Introduction to quality inspection

1.1. Justification for quality inspection 4

1.2. Quality inspection function 5

1.3. Quality inspection responsibility 5

1.4. Quality inspector’s profile 5

1.5. Necessary documents 5

1.6. Required human resources 5

1.7. Inspection diagram 6

2. Incoming delivery inspection

2.1. Justification for the incoming inspection 8

2.2. Procedures 9

3. In-process inspection

3.1. Inspection during manufacturing 10

3.2. Justification for the inspection

during the manufacturing stage 10

3.3. Process 11

3.4. Means 11

4. Final inspection

4.1. Final inspection process 12

4.2. Operating rules 13

4.3. Non-conformity treatment process 14

4.4. Conformity declaration 15

5. Summary of tasks after final inspection stage

5.1. Customer acceptance before installation 16

5.2. Installation 16

5.3. Commissioning 16

 

DOWNLOAD :

 

http://www2.schneider-electric.com/documents/panelbuilders/en/shared/project-management/DESWED101005EN-web.pdf

Wednesday, August 28, 2013

Basics of Circuit Breakers (Rockwell Automation)

Basics of Circuit Breakers

Content:

1. Design, function and types of

circuit breakers 1.1

1.1. Summary 1.1

1.2. Types of switches 1.2

1.2.1. Manual motor starter and protector or

circuit breaker with motor protective characteristics 1.2

1.2.2. Circuit breaker 1.2

1.2.3. Load break switch 1.6

1.2.4. Disconnector 1.6

1.2.5. Main switch 1.7

1.2.6. Emergency OFF-switch 1.8

1.2.7. Summary: Circuit breaker as load break switch 1.8

1.3. Design of a circuit breaker 1.9

1.3.1. The current path of the circuit breaker 1.9

1.3.2. Thermal overload release 1.10

1.3.3. Electromagnetic overcurrent release 1.10

1.3.4. Main contact system 1.12

1.3.5. Auxiliary contacts 1.15

1.3.6. Operating mechanism 1.15

1.4. Functions of a circuit breaker 1.15

1.4.1. Interrupting short-circuit current 1.16

1.4.2. Reliable protection of motors 1.17

1.4.3. Protection of leads and its optimum utilisation 1.18

1.4.4. Protection of installations 1.19

1.4.5. Integration in the control circuit 1.19

1.4.6. Switching under normal service conditions 1.20

1.4.7. Disconnecting function 1.20

1.4.8. Locking out with a padlock 1.20

2. Circuit breaker technology 2.1

2.1. Summary 2.1

2.2. Short-circuit current in supply systems 2.2

2.2.1. Types of short-circuit 2.2

2.2.2. The peak value of the short-circuit current 2.3

2.2.3. Calculation of the short-circuit current close to the transformer 2.4

2.2.4. Calculation of the short-circuit current in radial supply systems 2.7

2.2.5. Dynamic stress on the connecting leads

in the case of a short-circuit 2.16

2.3. Short-circuit protection 2.18

2.3.1. The principle of current limitation 2.18

2.3.2. Breaking capacity 2.26

2.3.3. Electrical life (durability) of

circuit breakers 2.26

2.4. Short-circuit co-ordination 2.28

2.4.1. Definitions in accordance with

the IEC 947-4-1 2.28

2.4.2. Conclusions drawn from the

definitions for the user 2.28

2.4.3. Physical significance of the short-circuit

co-ordination 2.30

2.4.4. Requirements of a circuit breaker for a simple

co-ordination of type "2" 2.33

3. Fields of application of circuit breakers 3.1

3.1. General procedure for the selection of

correctly rated circuit breakers 3.1

3.2. Circuit breakers for motor protection 3.2

3.2.1. Protection of motors with direct-on-line starting 3.3

3.2.2. Protection of motors with star-delta starting 3.4

3.2.3. Protection during heavy-duty starting 3.8

3.2.4. Circuit breaker with a motor protective

device connected downstream 3.8

3.2.5. Protection of motors in explosive environments 3.12

3.2.6. Protection of motors with phase controlled

starting (soft starter) 3.13

3.2.7. Protection of frequency controlled motors

(frequency converter) 3.14

3.3. Circuit breakers for the protection of

connecting leads and for group protection 3.16

3.3.1. Protection of the connecting leads 3.16

3.3.2. Group protection 3.16

3.4. Circuit breakers for capacitors 3.17

3.5. Circuit breakers for transformers 3.18

3.5.1. Protection of transformer: primary side 3.18

3.5.2. Protection of transformer: secondary side 3.18

3.6. Circuit breakers for generators 3.18

3.7. Circuit breakers for special supply frequencies 3.19

3.7.1. Breaking capacity at frequencies below 50/60Hz 3.19

3.7.2. Breaking capacity at frequencies above 50/60Hz 3.20

3.8. Interruption of direct current 3.20

3.9. Breaking capacity at higher supply voltages 3.21

3.10. Selectivity (discrimination) 3.21

3.10.1. Selectivity between circuit breakers 3.21

3.10.2. Selectivity between circuit breaker and fuse 3.24

3.10.3. Selectivity between fuses 3.25

4. Arguments in favor of the circuit breaker 4.1

4.1. Summary 4.1

4.2. Comparison of the functions:

circuit breaker / fuse 4.2

4.2.1. Time-current characteristics 4.2

4.2.2. Comparison of Joule-integrals 4.3

4.2.3. Comparison of the ultimative tripping current 4.4

4.2.4. Table of comparison 4.4

4.3. Arguments in favour of the circuit breaker 4.6

4.3.1. Prevention of accidents with the help of

circuit breakers 4.6

4.3.2. Ready to be switched on again without delay 4.8

4.3.3. All pole interruption 4.9

4.3.4. No ageing 4.9

4.3.5. Reduction of the conductor cross-section 4.10

4.3.6. Simplified planning of installations 4.14

4.3.7. Reduction of costs of installations and

optional costs 4.14

iii

Circuit

DOWNLOAD EBOOK:

http://literature.rockwellautomation.com/idc/groups/literature/documents/wp/140m-wp001_-en-p.pdf

Tuesday, August 6, 2013

Franchised Panel Builder Hand-Book (Gulf Countries)

Franchised Panel Builders Hand Book

 

Index

Chapter Content

PREFACE

2. TYPICAL ORGANIZATION & FACTORY LAYOUT

3. TENDERING

4. ORDER PROCESS, DESIGN & ENGINEERING

5. MATERIAL & PRODUCTION PLANNING

6. PRODUCTION

7. INSPECTION & QUALITY CONTROL

8. PACKING

9. SITE-TESTING & COMMISSIONING

10.USEFUL INFORMATION

 

DOWNLOAD :

http://www.docstoc.com/docs/35171459/19765547-Franchised-Panel-Builder-Hand-Book

 

Friday, August 2, 2013

Trade of Electrician Standards Based Apprenticeship (COURSE NOTES)

Created by Eugene Trindles - Cork TC

Revision 1 April 2000 by

Eugene Trindles - Cork TC

Chris Ludlow - Sligo TC

Charlie Walsh – Athlone TC

Revision 2 Nov. 2002 by

Eugene Trindles - Cork TC

Chris Ludlow – Dundalk TC

Revision 3 May 2006 by

Chris Ludlow – Dundalk TC

Revision 4. Feb 2008 By

Chris Ludlow - Dundalk TC

Revision 5. July 2009 By

Chris Ludlow - Dundalk TC

Revision 6. October 2009 By

Chris Ludlow - Dundalk TC

 

Compiled by Liam Carroll – Certification & Standards

 

Published by

 

FÁS - Training and Employment Authority

P.O. Box 456

27-33 Upper Baggot Street

Dublin 4

Ireland

© FÁS - 2009

 

DOWNLOAD :

http://www.gobookee.net/trade-of-electrician-course-notes/

http://www.ecollege.ie