Book's Contents:
1. Electrical measurements
1.1 Why is it important to measure?
1.2 Applicational contexts
1.3 Problems connected with energy networks
1.4 Reducing consumption
1.5 Table of charges
1.6 Absorption peaks
1.7 Dividing consumption
1.8 Power Factor Correction and Maintenance
1.9 Remote and historical reading of information
2. Technical reference standards
2.1 IEC standards
2.2 MID Directive
3. Measuring instruments
3.1 Analogue instruments
3.2 Digital instruments
3.3 Measurement errors and accuracy ratings
3.4 Comparison between the two categories of instrument:
advantages and limits
4. Direct and indirect measurements: CTs, VTs, converters and accessories
4.1 Direct measurements
4.2 Indirect measurements
4.3 Shunts for direct current
4.4 Converters and accessories
5. Overview of ABB range
5.1 Analogue instruments
5.1.1 DIN rail analogue instruments
5.1.2 Analogue instruments on front of panel
5.1.3 Advantages
5.2 Digital instruments
5.2.1 DIN rail digital instruments
5.2.2 Analogue instruments on front of panel
5.2.3 DMTME multimeters
5.2.4 MTME and ANR network analysers
5.2.5 Temperature measuring units
5.2.6 Electronic energy meters
5.3 Accessories for measuring instruments
5.3.1 Serial communication adapters
5.3.2 Current transformers
5.3.3 Voltage transformers
5.3.4 Shunts for direct current
6. The measurements
6.1 TRMS Measurements
6.1.1 Linear loads
6.1.2 Non linear loads
6.1.3 Problems connected with TRMS measurements
6.2 Harmonic distorsion and THD
6.3 Cosfì (cosϕ) and power factor (PF)
6.4 Practical tips for installing a good measuring system
7. Digital communication
7.1 Communication protocols
7.1.1 The physical layer
7.1.2 The connection layer
7.1.3 The applicational layer
7.1.4 Compatibility between levels
7.2 Supervision of electrical distribution plants
7.3 The Modbus RS-485 network
7.3.1 Rules for correct cabling
7.3.2 The operation of the Modbus system
8. Applicational examples of network analysers
8.1 Nominal voltage (phase/neutral) and linked voltage
(phase/phase) as true effective TRMS value
8.2 Current as true effective TRMS value
on the three phases and on neutral
8.3 Power factor (cosϕ)
8.4 Active power
8.5 Harmonic distortion rate (HDR) up to 31 th harmonic displayed graphically and as a percentage value
8.6 Harmonic distortion up to 31th harmonic displayed
graphically and as a percentage value
8.7 Active energy consumed and generated with subdivision of the count into total counters and according to settable times of day
9. Annex
9.1 Measurements Glossary
