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  2. Integrated electric propulsion - Wikipedia

    en.wikipedia.org/wiki/Integrated_electric_propulsion

    An example of integrated electric propulsion in the Type 45 destroyer (GT: gas turbine; DG: diesel generator) Integrated electric propulsion (IEP), full electric propulsion (FEP) or integrated full electric propulsion (IFEP) is an arrangement of marine propulsion systems such that gas turbines or diesel generators or both generate three-phase [1] electricity which is then used to power ...

  3. Transformer types - Wikipedia

    en.wikipedia.org/wiki/Transformer_types

    The equivalent power rating of the autotransformer is lower than the actual load power rating. It is calculated by: load VA × (|Vin – Vout|)/Vin. [2] For example, an auto transformer that adapts a 1000 VA load rated at 120 volts to a 240 volt supply has an equivalent rating of at least: 1,000 VA (240 V – 120 V) / 240 V = 500 VA.

  4. Split-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Split-phase_electric_power

    The neutral conductor is connected to ground at the transformer center tap. Circuits for lighting and small appliance power outlets use 120 V circuits connected between one line and neutral. High-demand applications, such as ovens, are often powered using 240 V AC circuits—these are connected between the two 120 V AC lines.

  5. Mains electricity by country - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity_by_country

    a • b, a • c • d, m • e, c • f, c • g • h, c • i • j, c • k, c • l, c • n, c The system of plug types using a single letter (from A to N) used here is from World Plugs , which defines the plug type letters in terms of a general description, without making reference to specific standards.

  6. Voltage transformer - Wikipedia

    en.wikipedia.org/wiki/Voltage_transformer

    Transformer winding primary (usually high-voltage) connecting wires are of many types. They may be labeled as H 1, H 2 (sometimes H 0 if it is internally designed to be grounded) and X 1, X2 and sometimes an X 3 tap may be present. Sometimes a second isolated winding (Y 1, Y 2, Y 3) (and third (Z 1, Z 2, Z 3) may also be available on the same ...

  7. Intercity Express Programme - Wikipedia

    en.wikipedia.org/wiki/Intercity_Express_Programme

    The programme to procure a replacement for the Intercity 125 fleet was launched by the DfT in 2005. [5] [6] In March 2007, the DfT published an OJEU notice (2007/S 48-059536, [7] [8] [9] contract title: Intercity Express Programme (IEP), previously referred to as HST2) [10] announcing its intention to seek an organisation to finance, build, construct facilities (depots) for, and maintain over ...

  8. Mains electricity - Wikipedia

    en.wikipedia.org/wiki/Mains_electricity

    In the United Kingdom [5] the nominal supply voltage is 230 V +10%/−6% to accommodate the fact that most transformers are in fact still set to 240 V. The 230 V standard has become widespread so that 230 V equipment can be used in most parts of the world with the aid of an adapter or a change to the equipment's plug to the standard for the ...

  9. Two-phase electric power - Wikipedia

    en.wikipedia.org/wiki/Two-phase_electric_power

    Two-phase power can be derived from a three-phase source using two transformers in a Scott connection: One transformer primary is connected across two phases of the supply. The second transformer is connected to a center-tap of the first transformer, and is wound for 86.6% of the phase-to-phase voltage on the three-phase system.