Reliable electrical systems begin long before equipment is purchased. They require a clear understanding of electrical loads, operating environment, protection philosophy, system duty, maintainability, applicable standards, and project-specific requirements. An Electrical Equipment Study converts these inputs into technically sound specifications that support safe, reliable, and cost-effective electrical equipment selection and sizing.
iFluids Engineering delivers electrical equipment engineering and specification services to industrial and infrastructure clients, drawing on deep domain knowledge across oil & gas, refining, petrochemicals, terminals, utilities, power generation, and related process industries. Our team supports clients across the full project lifecycle, from concept and FEED through detailed engineering and execution, offering equipment specifications and datasheets, sizing calculations, technical requisitions, procurement assistance, technical bid evaluations, and thorough review of vendor documentation.
What Is an Electrical Equipment Study?
An Electrical Equipment Study is a systematic engineering assessment used to define the technical requirements of electrical equipment before procurement, replacement, or system modification. The study evaluates electrical ratings, operating duty, fault levels, environmental conditions, hazardous-area requirements, protection needs, installation constraints, system interfaces, testing requirements, and applicable codes and standards.
It provides the technical basis for electrical equipment selection, sizing, specification, and procurement, ensuring equipment is suitable for normal operation, starting conditions, switching duties, abnormal operating conditions, and electrical fault conditions.
Scope of Electrical Equipment Specification Services
Our Electrical Equipment Specification Services support individual equipment packages, brownfield modifications, and complete electrical distribution systems.
The scope may include:
- Review of design basis, load lists, SLDs, load flow and short-circuit studies
- Assessment of motor starting, protection philosophy, cable data and hazardous area classification
- Review of equipment layouts, utility data and project specifications
- Preparation of electrical equipment specifications and datasheets
- Electrical equipment selection, sizing and rating verification
- Preparation of technical and material requisitions
- Definition of protection, environmental, testing and FAT requirements
- Technical Bid Evaluation (TBE) and vendor document review
- Review of deviations, technical queries and procurement requirements
- Support during detailed engineering and package integration
These activities help define clear technical, operational, environmental and procurement requirements for electrical equipment vendors.
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PROJECTS DELIVERED ACROSS THE GLOBE
Electrical Equipment Covered
The Electrical Equipment Study can be prepared for a broad range of low-voltage, medium-voltage, and high-voltage equipment used in industrial power distribution systems.
| Equipment | Key Study Parameters |
| Transformers | Rating, voltage ratio, impedance, cooling and protection |
| MV/LV Switchgear | Voltage, current, fault rating, breakers and interlocks |
| MCCs & Distribution Boards | Feeder rating, protection, busbar capacity and spare feeders |
| Motors & VFDs | Power, duty, starting method, efficiency and control |
| UPS & DC Systems | Capacity, redundancy, autonomy and bypass requirements |
| Generators | Rating, operating duty, synchronization and protection |
| Capacitor Banks & Harmonic Filters | Reactive power, harmonic duty, switching and protection |
| Packaged Substations | Transformer, switchgear, enclosure and interfaces |
| Protection & Control Equipment | Relay functions, metering, communication, alarms and trips |
| Hazardous-Area Equipment | Area classification, gas group, temperature class and Ex protection |
The study may cover transformers, MV/LV switchgear, MCCs, motors, VFDs, UPS systems, generators, battery chargers, distribution boards, packaged substations, and protection relays.
For process plants and hazardous areas, specifications may also define equipment certification, enclosure protection, temperature class, gas/dust group, Equipment Protection Level, and hazardous-area installation requirements.
Our Electrical Equipment Study Methodology
1. Review of Design Inputs
We review the electrical design basis, load schedules, SLDs, short-circuit data, hazardous area classification, equipment layouts, utility data, and project specifications to establish the basis for the study.
2. Establishment of Equipment Duty
Each equipment item is assessed for its actual operating duty, including loading, motor starting, transformer inrush, switching, fault withstand, standby philosophy, redundancy, and emergency operation.
3. Electrical Equipment Sizing and Rating
We define the required voltage, current, power rating, fault capacity, insulation level, efficiency, ingress protection, cooling, earthing, protection, metering, and communication requirements to ensure appropriate equipment selection and sizing.
4. Applicable Codes and Standards Review
Specifications are aligned with relevant IEC, IEEE, NEC/NFPA, NEMA, IS, client, and project-specific standards, including hazardous-area certification and Ex requirements where applicable.
5. Preparation of Specifications and Datasheets
The study findings are converted into procurement-ready electrical equipment technical specifications and datasheets covering ratings, construction, performance, protection, environmental conditions, testing, FAT, documentation, and vendor requirements.
6. Technical Bid Evaluation and Vendor Review
Vendor offers, drawings, datasheets, and technical documents are reviewed against project specifications to identify compliance, deviations, exceptions, interface issues, and documentation gaps.
Why Electrical Equipment Specification Matters
A structured Electrical Equipment Study helps projects define exactly what is required before equipment is purchased. It improves technical consistency between packages, supports fair vendor comparison, reduces overdesign and underdesign, identifies interface requirements early, and provides procurement teams with a clear technical basis for decision-making.
Correct electrical equipment specification and selection is also closely linked to electrical system safety and reliability.
For example:
- MV and LV switchgear must withstand the available fault duty.
- Transformers must meet connected load and operating requirements.
- Motors must be suitable for process duty and starting conditions.
- VFDs must be compatible with the motor and electrical network.
- UPS and battery systems must provide the required backup duration.
- Hazardous-area electrical equipment must comply with the applicable area classification.
- Protection relays must coordinate with upstream and downstream protective devices.
By addressing these factors during engineering, projects can reduce redesign, technical deviations, procurement delays, installation conflicts, and commissioning-stage modifications.
Key Deliverables
Depending on the project scope, deliverables may include:
- Equipment specifications and datasheets
- Equipment sizing calculations
- Electrical design criteria
- Technical and material requisitions
- Equipment schedules
- Technical Bid Evaluation reports
- Vendor deviation and document reviews
- Inspection and FAT requirements
- Final approved equipment data
Deliverables can be prepared in the client’s existing documentation format or developed as standardized templates for repeated use across multiple projects and facilities.
Applications Across Industrial Sectors
Our Electrical Equipment Study Services can support both greenfield and brownfield developments across:
- Oil and gas production facilities
- Refineries
- Petrochemical and chemical plants
- LNG facilities
- Tank farms and terminals
- Pipelines and pump stations
- Fertilizer plants
- Power generation facilities
- Utility systems
- Water and wastewater facilities
- Manufacturing plants
- Offshore installations
Our experience supports the preparation of electrical equipment specifications for oil and gas projects, refineries, petrochemical plants, power facilities, and other process industries.
Equipment requirements are developed around the actual operating environment and project duty rather than relying on generic specifications. Factors such as high ambient temperature, humidity, corrosive atmosphere, offshore exposure, dust, hazardous-area classification, indoor or outdoor installation, maintainability, and available utility systems can all influence the final equipment specification.
Conclusion
iFluids Engineering provides end-to-end Electrical Equipment Study and Specification Services for industrial and process facilities. Our support includes equipment selection and sizing, datasheet preparation, technical specification development, equipment rating verification, Technical Bid Evaluation, procurement support, and vendor document review. Our multidisciplinary approach helps deliver practical and technically consistent engineering solutions for new projects, plant expansions, equipment replacements, system upgrades, and brownfield modifications.
Contact iFluids Engineering to discuss your Electrical Equipment Study and Specification requirements and the level of engineering support needed for your project.
Frequently Asked Questions
An Electrical Equipment Study evaluates equipment ratings, sizing, protection, operating duty, environmental conditions, and applicable standards to support safe and reliable equipment selection and specification.
Selection is based on system voltage, load demand, fault level, operating duty, environmental conditions, hazardous-area requirements, protection needs, and applicable standards.
Typical inputs include single-line diagrams, load lists, system voltage, fault levels, equipment duty, hazardous area classification, environmental conditions, protection philosophy, and project standards.
Electrical equipment sizing determines the required capacity, current rating, fault withstand capability, insulation level, and operating duty to avoid under-sizing or unnecessary over-design.
The study can cover transformers, MV/LV switchgear, MCCs, motors, VFDs, UPS systems, generators, battery systems, distribution boards, packaged substations, and protection relays.
Specifications may reference applicable IEC, IEEE, NEC/NFPA, NEMA, IS, client, and project-specific standards, depending on the equipment type, application, and project location.