Leonardo ENERGY
The Global Community for Sustainable Energy Professionals
Guide for electrical design engineers
Leonardo ENERGY has launched a new publication for electrical design engineers called “Guide for electrical design engineers”. Each chapter will study an electrical design case and present its methodical, step-by-step calculation method.
Chapter 1 : Designing an Uninterruptible Power Supply
A company specialized in uninterruptible
power supply systems developed and manufactured in 2006 a system comprising a
400kVA UPS unit.
The system was installed in a production
facility manufacturing food packaging equipment and foil, located in northern Poland
Chapter 2 : Centralised Reactive Power Compensation
In this guide, you will learn how to determine the maximum and minimum
compensator power in order to compensate reactive power in case of harmonic
pollution
Chapter 3: permissible level of voltage fluctuations for a motor
In this guide, a design engineer has to
advise his industrial customer who plans to connect a new induction motor to
the power supply system. Using the permissible level of voltage fluctuations,
his methodology is described.
Chapter 4 : voltage change during drive start
In this guide, a design engineer works on a converter drive design and
determines the voltage change coefficient during the drive start, compares it
to permissible levels and suggests solutions to have it
satisfying the limit
Chapter 5 : Mitigation of voltage unbalance
When the limit values of unbalance factor,
specified in standards are exceeded, the use of symmetrizatin systems is
required. A symmetrizator should not cause significant active power losses
during operation, it implies that the symmetrization process shall be carried
out by means of reactive elements (LC) or using active methods (power
electronic systems). In this step by step guide, you will learn how to solve
unbalance issues.
Chapter 6 : static FC/TCR compensator
Industrial facilities are a source of major
disturbance to power systems due to more and more large power loads being
installed that, apart from their good functional properties, are characterised
by negative impact on the quality of power.
Chapter 7: overload capacity of power transformers
This guide presents a methodology based on standard PN-IEC 60354
Chapter 8: emergency & UPS for Buildings - Sizing the source power
Prior to designing a power supply system
for a building or other structure, a designer carries out a detailed analysis
concerning the requirements for reliability of power supply of loads to be
installed in the designed building or facility.
Chapter 9 : measuring
earth resistance and continuity testing
Earth resistance is a key parameter in
determining the efficiency of earthing systems.
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Seems extensive
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