A substation is a part of an electrical generation, transmission, and distribution system.

Electrical steel (lamination steel, silicon electrical steel, silicon steel, relay steel, transformer steel) is an iron alloy tailored to produce specific magnetic properties: small hysteresis area resulting in low power loss per cycle, low core loss, and high permeability.

Electrical safety testing is essential to ensure safe operating standards for any product or establishment that uses electricity.

Electrical safety is a system of organizational measures and technical means to prevent harmful and dangerous effects on workers from electric current, arcing, electromagnetic fields and static electricity.

Electrical resistance of an object is a measure of its opposition to the flow of electric current.

Reactance is the opposition of a circuit element to the flow of current due to that element's inductance or capacitance.

Electrical polarity is a term used throughout industries and fields that involve electricity.

A persistent fault is present regardless of power being applied.

The output of a generator or power plant usually measured in megawatts (MW).

An electrical outlet tester, receptacle tester, or socket tester is a small device containing a power plug and three indicator lights, used for quickly detecting some types of incorrectly-wired electrical wall outlets.

An electrical network is an interconnection of electrical components (e.g., batteries, resistors, inductors, capacitors, switches, transistors) or a model of such an interconnection, consisting of electrical elements (e.g., voltage sources, current sources, resistances, inductances, capacitances).

Electrical measurements are the methods, devices and calculations used to measure electrical quantities.

Electrical insulation papers are paper types that are used as electrical insulation in many applications due to pure cellulose having outstanding electrical properties.

Electrical impedance is the measure of the opposition that a circuit presents to a current when a voltage is applied.

A ground fault (earth fault) is any failure that allows unintended connection of power circuit conductors with the earth.

A diesel–electric transmission, or diesel–electric powertrain is a transmission system for vehicles powered by diesel engines in road, rail, and marine transport.

A dielectric material is an electrical insulator that can be polarized by an applied electric field.

A colorless gas usually sold under the brand name Freon-12, and a chlorofluorocarbon halomethane (CFC) used as a refrigerant and aerosol spray propellant.

A die is a specialized machine tool used in manufacturing industries to cut and/or form material to a desired shape or profile.

A diaphragm seal is a flexible membrane that seals and isolates an enclosure.