44 resultater (0,29506 sekunder)

Mærke

Butik

Pris (EUR)

Nulstil filter

Produkter
Fra
Butikker

Bonding Systems and Equipment - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Physical Plant Equipment Fundamentals - Kenneth L. Petrocelly - Bog - River Publishers - Plusbog.dk

Grounding Electrical Distribution Systems - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Grounding Electrical Distribution Systems - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

The first concern and the most important reason for proper grounding techniques are to protect people from the effects of ground-faults and lightning. Creating an effective ground-fault current path to assure the operation of overcurrent protective devices on solidly grounded systems and to limit the voltage-rise on equipment frames during fault condition is of paramount importance. The next concern is building and equipment protection. In this case, providing low impedance bonding and grounding paths between the system source, the electrical service and downstream equipment will serve to limit hazardous voltages due to faults and especially, lightning, A low resistance-to-ground system will serve to limit the voltage rise on systems and equipment. But of equal importance is the length of the grounding electrode conductor. It is critical to limit the length of this conductor due to the increased impedance of lightning currents. And finally, a properly installed grounding system will minimize the effects of electrical noise on sensitive circuits and stabilize the voltage-to-ground during normal operation. This volume has extensive information on grounding electrical systems and equipment. This information includes the following topics: - System Grounding - Equipment Grounding - Bonding - The Grounding Electrode System - Solidly Grounded Systems - Impedance Grounded Systems - Grounding Separately-Derived Systems - Calculating Ground-Fault Currents - Conductor Insulation Withstand Ratings - Conductor Fusing or Melting Currents - Functional Grounding - Lightning Protection Readership: Anyone involved with designing a proper grounding system that will serve to protect people and equipment from the effects of ground faults and lightning. And to design a proper grounding system for special applications, including Solar and Wind Powered Systems.

DKK 948.00
1

Grounding Electrical Distribution Systems - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Grounding Electrical Distribution Systems - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

The first concern and the most important reason for proper grounding techniques are to protect people from the effects of ground-faults and lightning. Creating an effective ground-fault current path to assure the operation of overcurrent protective devices on solidly grounded systems and to limit the voltage-rise on equipment frames during fault condition is of paramount importance. The next concern is building and equipment protection. In this case, providing low impedance bonding and grounding paths between the system source, the electrical service and downstream equipment will serve to limit hazardous voltages due to faults and especially, lightning, A low resistance-to-ground system will serve to limit the voltage rise on systems and equipment. But of equal importance is the length of the grounding electrode conductor. It is critical to limit the length of this conductor due to the increased impedance of lightning currents. And finally, a properly installed grounding system will minimize the effects of electrical noise on sensitive circuits and stabilize the voltage-to-ground during normal operation. This volume has extensive information on grounding electrical systems and equipment. This information includes the following topics: - System Grounding - Equipment Grounding - Bonding - The Grounding Electrode System - Solidly Grounded Systems - Impedance Grounded Systems - Grounding Separately-Derived Systems - Calculating Ground-Fault Currents - Conductor Insulation Withstand Ratings - Conductor Fusing or Melting Currents - Functional Grounding - Lightning Protection Readership: Anyone involved with designing a proper grounding system that will serve to protect people and equipment from the effects of ground faults and lightning. And to design a proper grounding system for special applications, including Solar and Wind Powered Systems.

DKK 457.00
1

Data Driven Energy Centered Maintenance - Fadi Alshakhshir - Bog - River Publishers - Plusbog.dk

Data Driven Energy Centered Maintenance - Fadi Alshakhshir - Bog - River Publishers - Plusbog.dk

Over recent years, many new technologies have been introduced to drive the digital transformation in the building maintenance industry. The current trend in digital evolution involves data-driven decision making which opens new opportunities for an energy centered maintenance model. Artificial Intelligence and Machine Learning are helping the maintenance team to get to the next level of maintenance intelligence to provide real-time early warning of abnormal equipment performance. This edition follows the same methodology as the First. It provides detailed descriptions of the latest technologies associated with Artificial Intelligence and Machine Learning which enable data-driven decision-making processes about the equipment’s operation and maintenance. Technical topics discussed in the book include: - Different Maintenance Types and The Need for Energy Centered Maintenance - The Centered Maintenance Model - Energy Centered Maintenance Process - Measures of Equipment and Maintenance Efficiency and Effectiveness - Data-Driven Energy Centered Maintenance Model: - - Digitally Enabled Energy Centered Maintenance Tasks - Artificial Intelligence and Machine Learning in Energy Centered Maintenance - Model Capabilities and Analytics Rules - Building Management System Schematics The book contains a detailed description of the digital transformation process of most of the maintenance inspection tasks as they move away from being manually triggered. The book is aimed at building operators as well as those building automation companies who are working continuously to digitalize building operation and maintenance procedures. The benefits are reductions in the equipment failure rate, improvements in equipment reliability, increases in equipment efficiency and extended equipment lifespan.

DKK 588.00
1

The NEC and You Perfect Together - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Advanced Concepts for Renewable Energy Supply of Data Centres - - Bog - River Publishers - Plusbog.dk

Advanced Concepts for Renewable Energy Supply of Data Centres - - Bog - River Publishers - Plusbog.dk

The rapid increase of cloud computing, high performance computing (HPC) and the vast growth in Internet and Social Media use have aroused the interest in energy consumption and the carbon footprint of Data Centres. Data Centres primarily contain electronic equipment used for data processing (servers), data storage (storage equipment), and communications (network equipment). Collectively, this equipment processes, stores, and transmits digital information and is known as information technology (IT) equipment. Advanced Concepts for Renewable Energy Supply of Data Centres introduces a number of technical solutions for the supply of power and cooling energy into Data Centres with enhanced utilisation of renewable energy sources in order to achieve low energy Data Centres. Because of the high energy density nature of these unique infrastructures, it is essential to implement energy efficiency measures and reduce consumption before introducing any renewable energy source. A holistic approach is used with the objective of integrating many technical solutions such as management of the IT (Information Technology) load, efficient electrical supply to the IT systems, Low-Ex air-conditioning systems, interaction with district heating and cooling networks, re-use of heat, free cooling (air, seawater, groundwater), optimal use of heat and cold storage, electrical storage and integration in smart grids. This book is therefore a catalogue of advanced technical concepts that could be integrated into Data Centres portfolio in order to increase the overall efficiency and the share of renewable energies in power and cooling supply. Based on dynamic energy models implemented in TRNSYS some concepts are deeply evaluated through yearly simulations. The results of the simulation are illustrated with Sankey charts, where the energy flows per year within the subsystems of each concept for a selected scenario are shown, and graphs showing the results of parametric analysis. A set of environmental metrics (as the non-renewable primary energy) and financial metrics (CAPEX and OPEX) as well of energy efficiency metrics like the well-known PUE, are described and used to evaluate the different technical concepts.

DKK 363.00
1

Advanced Concepts for Renewable Energy Supply of Data Centres - - Bog - River Publishers - Plusbog.dk

Advanced Concepts for Renewable Energy Supply of Data Centres - - Bog - River Publishers - Plusbog.dk

The rapid increase of cloud computing, high performance computing (HPC) and the vast growth in Internet and Social Media use have aroused the interest in energy consumption and the carbon footprint of Data Centres. Data Centres primarily contain electronic equipment used for data processing (servers), data storage (storage equipment), and communications (network equipment). Collectively, this equipment processes, stores, and transmits digital information and is known as information technology (IT) equipment. Advanced Concepts for Renewable Energy Supply of Data Centres introduces a number of technical solutions for the supply of power and cooling energy into Data Centres with enhanced utilisation of renewable energy sources in order to achieve low energy Data Centres. Because of the high energy density nature of these unique infrastructures, it is essential to implement energy efficiency measures and reduce consumption before introducing any renewable energy source. A holistic approach is used with the objective of integrating many technical solutions such as management of the IT (Information Technology) load, efficient electrical supply to the IT systems, Low-Ex air-conditioning systems, interaction with district heating and cooling networks, re-use of heat, free cooling (air, seawater, groundwater), optimal use of heat and cold storage, electrical storage and integration in smart grids. This book is therefore a catalogue of advanced technical concepts that could be integrated into Data Centres portfolio in order to increase the overall efficiency and the share of renewable energies in power and cooling supply. Based on dynamic energy models implemented in TRNSYS some concepts are deeply evaluated through yearly simulations. The results of the simulation are illustrated with Sankey charts, where the energy flows per year within the subsystems of each concept for a selected scenario are shown, and graphs showing the results of parametric analysis. A set of environmental metrics (as the non-renewable primary energy) and financial metrics (CAPEX and OPEX) as well of energy efficiency metrics like the well-known PUE, are described and used to evaluate the different technical concepts.

DKK 778.00
1

Efficient Electrical Systems Design Handbook - Albert Thumann - Bog - River Publishers - Plusbog.dk

Overcurrent Protection NEC Article 240 and Beyond - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Overcurrent Protection NEC Article 240 and Beyond - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

An overcurrent is caused by a short-circuit, ground-fault, or an overload. A short-circuit may be hundreds or even thousands of times above the normal operating current. This type of fault may be an arcing fault between ungrounded conductors or between an ungrounded conductor and a grounded (usually, a neutral) conductor, a line-to-line arcing fault may produce a current of 74% of a 3-phase bolted fault. A line-to-neutral arcing fault will be somewhat less. A line-to-line bolted fault, the equivalent, of the conductors bolted together, may be up to 100% of the available short-circuit current. A line-to-neutral bolted fault may be in excess of 100% of the 3-phase bolted fault at the source, but considerably less downstream. A ground-fault, that is, the equivalent of a connection between an ungrounded conductor and the equipment grounding system, will produce a current that may be 38% or higher of the 3-phase bolted fault current. These types of faults are typically arcing faults which normally are intermittent in nature. That is, they strike and restrike over time and may produce a short-circuit fault due to insulation damage. Once again, a line-to-equipment ground fault near the source may produce a fault current of over 100% of the 3-phase bolted fault, but considerably less downstream. An overload typically ranges from one to six times the normal current, and are normally caused by motor starting currents or transformer magnetizing currents. These conditions are of such short duration that the circuit components are not damaged. This book has a detailed analysis of these types of faults, along with explanations and examples of the various types of overcurrent protective devices to assure proper protection. This volume has extensive information on the application of overcurrent protection for conductors and equipment. The reader will be able to calculate fault currents as well as establishing the short-circuit withstand rating of conductor insulation and to determine the appropriate type of overcurrent devices based on circuit conditions. In addition, determining ground-fault currents for the purpose of selecting the proper size of equipment grounding conductors to establish an effective ground-fault current path is discussed in detail. Readership - Anyone involved with the design of overcurrent protection for electrical distribution systems from the system source to the electrical utilization equipment. The emphasis is placed on the design of the overcurrent protection for specific installations to assure proper protection for the circuit components regardless of the type of fault encountered.

DKK 967.00
1

Overcurrent Protection NEC Article 240 and Beyond - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Overcurrent Protection NEC Article 240 and Beyond - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

An overcurrent is caused by a short-circuit, ground-fault, or an overload. A short-circuit may be hundreds or even thousands of times above the normal operating current. This type of fault may be an arcing fault between ungrounded conductors or between an ungrounded conductor and a grounded (usually, a neutral) conductor, a line-to-line arcing fault may produce a current of 74% of a 3-phase bolted fault. A line-to-neutral arcing fault will be somewhat less. A line-to-line bolted fault, the equivalent, of the conductors bolted together, may be up to 100% of the available short-circuit current. A line-to-neutral bolted fault may be in excess of 100% of the 3-phase bolted fault at the source, but considerably less downstream. A ground-fault, that is, the equivalent of a connection between an ungrounded conductor and the equipment grounding system, will produce a current that may be 38% or higher of the 3-phase bolted fault current. These types of faults are typically arcing faults which normally are intermittent in nature. That is, they strike and restrike over time and may produce a short-circuit fault due to insulation damage. Once again, a line-to-equipment ground fault near the source may produce a fault current of over 100% of the 3-phase bolted fault, but considerably less downstream. An overload typically ranges from one to six times the normal current, and are normally caused by motor starting currents or transformer magnetizing currents. These conditions are of such short duration that the circuit components are not damaged. This book has a detailed analysis of these types of faults, along with explanations and examples of the various types of overcurrent protective devices to assure proper protection. This volume has extensive information on the application of overcurrent protection for conductors and equipment. The reader will be able to calculate fault currents as well as establishing the short-circuit withstand rating of conductor insulation and to determine the appropriate type of overcurrent devices based on circuit conditions. In addition, determining ground-fault currents for the purpose of selecting the proper size of equipment grounding conductors to establish an effective ground-fault current path is discussed in detail. Readership - Anyone involved with the design of overcurrent protection for electrical distribution systems from the system source to the electrical utilization equipment. The emphasis is placed on the design of the overcurrent protection for specific installations to assure proper protection for the circuit components regardless of the type of fault encountered.

DKK 449.00
1

Power Systems Amid the 4th Industrial Revolution - - Bog - River Publishers - Plusbog.dk

Power Systems Amid the 4th Industrial Revolution - - Bog - River Publishers - Plusbog.dk

This book discusses the operation of power systems amid the 4th industrial revolution and the value of Industry 4.0 technologies to grid operators and end customers. The concept of smart grids was introduced years ago, but their practical implementation into power grids was delayed as the information communication technology infrastructure was not ready. The transition to smart grids can be put into three dimensions: decentralization, decarbonization, and digitalization. Industry 4.0 technologies can enable more advanced features that can add value to all parties in smart grids and achieve a more holistic efficiency increase for the entire system via accomplishing business goals and realizing technical requirements. Technical topics discussed in the book include: - Structure of the generalized IoT value chain and IoT applications for low carbon technologies. - Topological improvement of electrical equipment to facilitate a smooth transition to the smart grid infrastructure. - Improvement of techniques to tackle advanced power system problems such as energy management, power equipment diagnostics, and renewable energy integration. - Modeling, simulation, and analytic tools for cyber-attacks and cyber security actions for current cyber-physical power systems. - Artificial intelligence, big data, and machine learning application to power system problems. - Intelligent controllers for an advanced residential system.

DKK 1029.00
1

Grounding and Bonding Photovoltaic and Energy Storage Systems - Gregory P. Bierals - Bog - River Publishers - Plusbog.dk

Manager's Guide to Preventive Building Maintenance - Ryan Cruzan - Bog - River Publishers - Plusbog.dk

Lighting Redesign for Existing Buildings - Craig Dilouie - Bog - River Publishers - Plusbog.dk

Energy Centered Maintenance - Marvin T. Howell - Bog - River Publishers - Plusbog.dk

Practical Controls - Steven R. Calabrese - Bog - River Publishers - Plusbog.dk

Water Quality Systems - P.e. Reid - Bog - River Publishers - Plusbog.dk

Automated Diagnostics and Analytics for Buildings - - Bog - River Publishers - Plusbog.dk

Electrical Engineering for Non-Electrical Engineers - S. Bobby Rauf - Bog - River Publishers - Plusbog.dk

Introduction to Analog-to-Digital Converters - Takao Waho - Bog - River Publishers - Plusbog.dk

Practical Lubrication for Industrial Facilities, Third Edition - Heinz P. Bloch - Bog - River Publishers - Plusbog.dk

Introduction to Analog-to-Digital Converters - Takao Waho - Bog - River Publishers - Plusbog.dk

Creating a Strategic Energy Reduction Plan - Scott Offermann - Bog - River Publishers - Plusbog.dk