Chapter A General rules of electrical installation design
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Chapter A General rules of electrical installation design

Chapter A General rules of electrical installation design

Chapter A General rules of electrical installation design

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J<br />

K<br />

L<br />

M<br />

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<strong>General</strong> contents<br />

Protection against voltage surges in LV<br />

1 <strong>General</strong> J2<br />

2 Overvoltage protection devices J6<br />

3 Standards J11<br />

4 Choosing a protection device J14<br />

Energy Efficiency in <strong>electrical</strong> distribution<br />

1 Introduction K2<br />

2 Energy efficiency and electricity K3<br />

3 One process, several players K5<br />

4 From <strong>electrical</strong> measurement to <strong>electrical</strong> information K10<br />

5 Communication and Information System K16<br />

Power factor correction and harmonic filtering<br />

1 Reactive energy and power factor L2<br />

2 Why to improve the power factor? L5<br />

3 How to improve the power factor? L7<br />

4 Where to install power correction capacitors? L10<br />

5 How to decide the optimum level <strong>of</strong> compensation? L12<br />

6 Compensation at the terminals <strong>of</strong> a transformer L15<br />

7 Power factor correction <strong>of</strong> induction motors L18<br />

8 Example <strong>of</strong> an <strong>installation</strong> before and after power factor correction L20<br />

9 The effects <strong>of</strong> harmonics L21<br />

10 Implementation <strong>of</strong> capacitor banks L24<br />

Harmonic management<br />

1 The problem: M2<br />

Why is it necessary to detect and eliminate harmonics?<br />

2 Standards M3<br />

3 <strong>General</strong> M4<br />

4 Main effects <strong>of</strong> harmonics in <strong>installation</strong>s M6<br />

5 Essential indicators <strong>of</strong> harmonic distortion and M11<br />

measurement principles<br />

6 Measuring the indicators M14<br />

7 Detection devices M16<br />

8 Solutions to attenuate harmonics M17<br />

Characteristics <strong>of</strong> particular sources and loads<br />

1 Protection <strong>of</strong> a LV generator set and the downstream circuits N2<br />

2 Uninterruptible Power Supply Units (UPS) N11<br />

3 Protection <strong>of</strong> LV/LV transformers N24<br />

4 Lighting circuits N27<br />

5 Asynchronous motors N42<br />

Residential and other special locations<br />

1 Residential and similar premises P2<br />

2 Bathrooms and showers P8<br />

3 Recommendations applicable to special <strong>installation</strong>s and locations P12<br />

EMC guidelines<br />

1 Electrical distribution Q2<br />

2 Earthing principles and structures Q3<br />

3 Implementation Q5<br />

4 Coupling mechanism and counter-measures Q14<br />

5 Wiring recommendations Q20<br />

Schneider Electric - Electrical <strong>installation</strong> guide 2008

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