How do you create an electrical design spec for automation systems.

1Purpose and Scope

The first step of creating an EDS is to define the purpose and scope of the document. This section should clearly state the objectives, goals, and deliverables of the electrical design, as well as the assumptions, constraints, and exclusions that affect the design. It should also identify the intended audience, such as the client, the contractor, the engineer, or the operator, and the level of detail and format required for each.

2System Overview

The second step of creating an EDS is to provide a system overview that describes the general features and functions of the electrical system or subsystem. This section should include a brief description of the automation process, the equipment, the components, and the interfaces involved, as well as a schematic diagram or a block diagram that shows the layout and interconnection of the system. It should also highlight the main design criteria, such as the voltage, current, power, frequency, and protection ratings, and the standards and codes that apply to the system.

3Design Details

The third step of creating an EDS is to provide the design details that specify the technical aspects of the electrical system or subsystem. This section should cover topics such as power supply and distribution, control and communication, instrumentation and measurement, and safety and protection. For power supply and distribution, this should include details of transformers, generators, switchgear, cables, busbars, and other power components. For control and communication, this should include controllers, sensors, actuators, relays, switches, indicators, and other components. For instrumentation and measurement, this should include meters, gauges, transducers, analyzers, and other components. For safety and protection, this should include fuses, breakers, surge arresters, grounding, earthing, and other components. All these details should be provided to ensure power quality and reliability; transmit signals; exchange data; monitor the system; measure parameters; provide feedback; prevent hazards; and handle emergencies.

 4Testing and Validation

The fourth step of creating an EDS is to provide the testing and validation methods that verify the performance and functionality of the electrical system or subsystem. This section should outline the testing procedures, the acceptance criteria, the test equipment, and the test results that demonstrate that the system meets the design specifications and standards. It should also document any deviations, corrections, or improvements that are made during or after the testing process.