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  1. Hoxton123

    Turbo alternator tripped by reverse power

    We need more data. Did the prime mover trip? alternators (generators) turn input power into current, so what happened to the input power?
  2. Hoxton123

    Dual Fuel Generation

    Dual fuel diesel engines used to be common on UK and other sewage works. Started on diesel then added gas, reducing the diesel flow to about 10% of COP fuel flow. This diesel was the pilot fuel to ignite the gas / diesel mixture. In simple terms the gas was bled into the engine air inlet, so no...
  3. Hoxton123

    Terasaki AT25 breaker gunged up

    I assume you are in the UK, if so, please see HSE website for a similar problem with the use of what i assume is WD40 or similar...
  4. Hoxton123

    GAS TURBINE

    Also review what is the altitude of the plant?
  5. Hoxton123

    No damage to 2 pole turbo-generator rotor after extended motoring (40mins) without excitation?

    Did the turbine go into idle, just ran near synchronous speed expecting a re-synchronisation? is there a clutch between turbine and generator, so the turbine was not connected to generator?
  6. Hoxton123

    Doubt about GENERATOR technical drawing

    First thoughts: 1. the view shown is an isometric, often used to show general details, not specifics. For these you need to to see the traditional Orthographic Views (google it.) 2. I suspect that the letters are not from Engish, but looking at the generator, i suspect they mean: drive end...
  7. Hoxton123

    EDG Cable Sizing

    I agree air start, or is there any reason you cannot move the battery?
  8. Hoxton123

    We've had murder cars, now we've got murder-trains in Florida of course

    spsalso "It's my impression that railroads in England must fence their right of way." Only since the 1845 Railways Act! Prior to that they may have been unfenced (before my time...) I think that this applies to 'land designated as a railway' since any land that has been a railway has to be...
  9. Hoxton123

    Sizing of an alternator coupled to Diesel Engines / Steam turbines

    Most traditional prime movers (steam turbine, hydro turbine, diesel engine, gas engine etc) are essentially 'flat rated' against changes of combustion inlet temperature. Gas turbines are not and can produce more power as inlet temperature drops. To match power in the traditional way, you have...
  10. Hoxton123

    3 phase generator with amperage on ground

    The generator set needs commissioning. 60 kw is very small to have the controls and engineering required to operate mains parallel. Do you have to have permission from your electrical utility to do this? The costs and hassle of this usually dissuade small generators from paralleling unless...
  11. Hoxton123

    Excitation of synchronous generator and Generator’s Breaker

    Surely what is being discussed is similar, if not identical to 'breaker fail philosophy'? Breakers can fail to operate for a host of logic failures. Protection relay systems can fail to operate for similar reasons. We had a mines gas powered small power station in UK midlands, it comprised 3...
  12. Hoxton123

    Luton Airport car park ablaze

    I have never noticed sprinklers in a UK carpark. No idea about regulations in other countries. BBC TV news had an onlooker describing a car fire, then a jet of flame across the roof area. Seems to me like a fuel tank melting in the fire and releasing fuel. I wonder if the RoRo ferries take...
  13. Hoxton123

    Old electromechanicl relay GEC CTG25

    Oh dear. The gTg series were a GEC UK (not the USA General Electric) attempt to produce an electronic distribution protection relay in think the 1970s. The ‘T’ stands for transistor. the settings followed the mechanical disc relay IDMTL curves. CDG series, the D standing for disc. Unfortunately...
  14. Hoxton123

    Help Calculating kW/H Usage on Compressor

    ...we had sold a 2MW set (genset terminals), but a lot of the auxiliaries were electric motor driven... He (quite rightly IMO) said "you cheating b*****s, you sold me a 2MW genset that produces (nett) less than 2MW...” So we analysed all the electric driven auxiliaries. First fun was with the...
  15. Hoxton123

    Device that Data Logs Generator Output?

    What genset controller is fitted, that device may have an upgrade available to perform what you want. Alternatively try Comap intellisys https://www.comap-control.com/products/controllers/paralleling-gen-set-controllers/intelisys/intelisys-ntc-basebox/#tabs this has web based monitoring and...
  16. Hoxton123

    Datasheets / Specifications

    ... and you amalgamate the two when you go for purchase ...
  17. Hoxton123

    1 RTD Temp Increase while 5 kept constant

    When i worked in the rotating electrical machine industry,(motors generators) the designers favoured thermocouples as they were much more robust than RTDs. For RTDs we ALWAYS wound the stator with additions RTDs on a 1 for 1 basis. The minimum was 3 (1 per phase) this was doubled to 6. The more...
  18. Hoxton123

    Datasheets / Specifications

    I'm thinking of an ac generator (aka alternator). The specification would detail the common features: type of bearings: sleeve, ball roller, location bearing lube oil or grease lubrication ventilation and direction of airflow, air or water cooled. Vertical or horizontal mount and so on...

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