Transformers
This module presents the following topics:
•Principle of Operation
•Types of Transformers
•Operating Considerations and Limitations
Transformers
This module presents the following topics:
•Principle of Operation
•Types of Transformers
•Operating Considerations and Limitations
Medium Voltage Application Guide
Introduction
This reference guide is designed to help engineers in the field of medium voltage select and specify the right MV
equipment for their application. This guide provides an overview of all the main components in a motor control system, in a format that is readily understood by people with limited or no experience with motor control in general and soft starters in particular. We hope this document will help:
consulting engineers wanting to specify motor control equipment
technical departments using motor control equipment
maintenance engineers at locations with soft starters installed
We would welcome your feedback so we can continue to improve this guide. The examples and diagrams in this manual are included solely for illustrative purposes. The information contained in this manual is subject to change at any time and without prior notice. In no event will responsibility or liability be accepted for direct, indirect or consequential damages resulting from the use or application of this equipment.
Medium Voltage Application Guide
Introduction
This reference guide is designed to help engineers in the field of medium voltage select and specify the right MV
equipment for their application. This guide provides an overview of all the main components in a motor control system, in a format that is readily understood by people with limited or no experience with motor control in general and soft starters in particular. We hope this document will help:
consulting engineers wanting to specify motor control equipment
technical departments using motor control equipment
maintenance engineers at locations with soft starters installed
We would welcome your feedback so we can continue to improve this guide. The examples and diagrams in this manual are included solely for illustrative purposes. The information contained in this manual is subject to change at any time and without prior notice. In no event will responsibility or liability be accepted for direct, indirect or consequential damages resulting from the use or application of this equipment.
Electrical System Commissioning Manual
Introduction
The purpose of electrical testing on systems and their components is two-fold. The first is to check the installation of the equipment and perform component and systems tests to ensure that, when energized, the system will function properly. The second is to develop a set of baseline test results for comparison in future testing to identify equipment deterioration. The system should be initially checked for damage, deterioration, and component failures using specific component checks, inspections, and tests defined by the equipment manufacturer. Then the interconnection of the system components should be checked, using de-energized and energized methods, to verify the proper interconnection and operation of the components, including on/off control, system process interlocks, and protective relaying functions. Once the above tests are complete, the system can be energized and operational tests and measurements should be performed.
Electrical System Commissioning Manual
Introduction
The purpose of electrical testing on systems and their components is two-fold. The first is to check the installation of the equipment and perform component and systems tests to ensure that, when energized, the system will function properly. The second is to develop a set of baseline test results for comparison in future testing to identify equipment deterioration. The system should be initially checked for damage, deterioration, and component failures using specific component checks, inspections, and tests defined by the equipment manufacturer. Then the interconnection of the system components should be checked, using de-energized and energized methods, to verify the proper interconnection and operation of the components, including on/off control, system process interlocks, and protective relaying functions. Once the above tests are complete, the system can be energized and operational tests and measurements should be performed.
AC Motor Protection
Introduction
All electrical apparatus and systems need protective relays to monitor and initiate tripping in the case of short circuit current caused by faults and insulation failure. Indeed, ac motors are no exception to the rule and need overcurrent protection against short circuits from external faults in connecting cables and from internal faults in the motor windings. In addition, motors are thermally rated and limited, and protective relays must be applied to prevent overheating during operating conditions where no faults are present. In this respect, ac motor protection presents a unique challenge to the protection engineer and requires knowledge of both thermal and mechanical characteristics as well as electrical characteristics familiar to electrical engineers.
AC Motor Protection
Introduction
All electrical apparatus and systems need protective relays to monitor and initiate tripping in the case of short circuit current caused by faults and insulation failure. Indeed, ac motors are no exception to the rule and need overcurrent protection against short circuits from external faults in connecting cables and from internal faults in the motor windings. In addition, motors are thermally rated and limited, and protective relays must be applied to prevent overheating during operating conditions where no faults are present. In this respect, ac motor protection presents a unique challenge to the protection engineer and requires knowledge of both thermal and mechanical characteristics as well as electrical characteristics familiar to electrical engineers.