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- Basic devices and sources - Recognize and understand the use and application of batteries, generators and rectifiers.
- Emergency power system An emergency power system is an independent source of electrical power that supports important electrical systems on loss of normal power supply. A standby power system may include a standby generator, batteries and other apparatus. Emergency power systems are installed to protect life and property from the consequences of loss of primary electric power supply.
- Fundamentals of Batteries
- Electron Activity in Chemical Reactions Being that the motivation for electrons to move through a cell is chemical in nature, the amount of voltage (electromotive force) generated by any cell will be specific to the particular chemical reaction for that cell type.
- Battery Construction A "battery" is a set of voltaic cells designed to provide greater voltage and/or current than is possible with one cell alone.
- Battery Ratings The amp-hour is a unit of battery energy capacity, equal to the amount of continuous current multiplied by the discharge time, that a battery can supply before exhausting its internal store of chemical energy.
- Series and Parallel Battery Configurations Battery banks achieve the desired operating voltage by connecting several cells in series; each cell adds its voltage to the total terminal voltage. Parallel connection attains higher capacity for increased current handling; each cell adds to the ampere-hour (Ah) count.
- 4 Battery Hazards and How to Avoid Them Performing regular inspections on battery systems presents a unique challenge from other electrical power systems in that you cannot simply turn them off for maintenance or corrective action.
- Generators
- Generator Wiki In electricity generation, a generator is a device that converts mechanical energy to electrical energy for use in an external circuit.
- Rectifiers
- Diodes and Rectifiers: Rectifier circuits Simply defined, rectification is the conversion of alternating current (AC) to direct current (DC). This involves a device that only allows one-way flow of electrons.
- UPS Systems (Inverters)
- UPS Basics [PDF] An uninterruptible power system (UPS) is the central component of any well designed power protection architecture.
- UPS Wiki The primary role of any UPS is to provide short-term power when the input power source fails. However, most UPS units are also capable in varying degrees of correcting common utility power problems.
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