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  1. P

    Getting electrocuted when touching metallic parts when a UPS is connected to the supply

    @dhvinay Part 2: Interconnecting Cables: 10. Are all 3-Wire? 11. Have all been checked for continuity between male and female ends? Phil
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    Getting electrocuted when touching metallic parts when a UPS is connected to the supply

    @dhvinay Liked the very graphic bits! Going slowly, disconnect all except the Power Service-Panel 1. Is the panel metal? 2. Are there 3 power service wires: Red, Blk, Wht? 3. Are Red, Blk called the ungrounded service wires? 4. Is there 240-Vac between them? 5. Is the Wht wire called the...
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    My earthing/Ground pin shows voltage

    @dhvinIay I was there in Dec, 1980! Did an Electrical System Review of the Daharki, West Pakistan, Fertilizer Plant. I was an employee of Exxon Chemicals at that time. Regards, Phil Corso
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    Duty cycle of Motorized valve is 80%. What does 80% means.

    Sai09 Google "Motor Duty Cycle" and you will find quite a number listed. IEC Standards list more than 20. Others even provide varied shape formulae related to stop-start patterns! Regards, Phil Corso
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    My earthing/Ground pin shows voltage

    dhvinay... Actually, I believe you should republish your problem as a new Forum Topic! This one is so old and long, many members will ignore it! PS: How close are you to Pakistan? Regards, Phil Corso
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    My earthing/Ground pin shows voltage

    dhvinay... Welcome to Control Automation. Please provide a simple electrical diagram of your problem! Regards, Phil Corso (PE semi-retired) [email protected]
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    Prefered Breaker for Synchronization of two gensets or more

    RRA... Welcome to Control Automation. I suggest you contact Siemens for their discussion covering advantages and disadvantages of the 4-pole breaker, i.e., 3-Phase+Neutral. Regards, Phil Corso (PE Semi-retired) [email protected]
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    VOLTAGE DROP (solenoid valve)

    JARIS RAMOS... 6. Circuit energized, Vc = 24, Vv =11, Vb = 24-11 =13! 7. Valve: Rv = 201, Av = Vv/Rv = 11/201= 0.0547A = 54.7mA! 8. Barrier: Vb =24-11=13, Ab=54.7mA, Rb= Vb/Ab = 237ohm! To me, current magnitude appears to be ok! But, how does it compare to Mfg Specs? Regards, Phil Corso, PE...
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    VOLTAGE DROP (solenoid valve)

    JARIS RAMOS... Welcome to Control Automation! Regarding the Problem: 1. What is the DC supply voltage? 2. What is the Solenoid Current Rating? 3. What is the current rating of the Barrier? 5. Is the valve used to interrupt air, water, or inert Gas? Regards, Phil Corso, PE (Semi-retired)...
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    Terminal program for testing

    @tb5258... Welcome to Control Automation! In one of my company's CMOS-Based ESD System we have a 1,000 ft Fiber-Optic cable to an Over-Ride-Emergency Station! We found problems with connections, at both ends! The cable was OK! Regards, Phil Corso ([email protected])
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    Curious about why the Discharge MOV opens 1 minute after starting the BFP

    Hohoim... I believe your Control Automation topic is a Steam-Drum-Level system that overcomes a phenomena referred to as "Swell" and "Shrinkage"! If the Water-Flow instrument just monitors water to the steam-drum then the system is called "One-Element Control"! But, if the Water-Flow instrument...
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    RTD thermal protection HV Motors

    Djaba... Welcome to Control Automation. As GMcc pointed out, the more expensive the motor, then more layers of protection should be provided. I presume you consider Protection, to mean shutdown the motor! But, RTD's should never be used for protection! However, you have mentioned 4 of the 13...
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    Curious about why the Discharge MOV opens 1 minute after starting the BFP

    Hohoim... Welcome to Control Automation! It may have been because there are significantly long distances between the various boilers and pumps! Regards, Phil Corso
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    Generator Tripping on Seismic Probe

    Mutahir... To satisfy my own curiosity: Did you notice a smooth increase in vibration magnitude of any non-Seismic sensors for a short interval prior to 'trip'? Regards, Phil Corso
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    Generator Tripping on Seismic Probe

    Mutahir... I believe you have misunderstood my interpretation of the "Morton Effect". It is bending of a shaft because of heating occurring at just one point, but the same point each revolution of the shaft! Since it only occurred once in your case, then you are lucky. If it happens again then...
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    Generator Tripping on Seismic Probe

    Mutahir... Thanks for your Blessing! Even celebrated our 65th Wedding Anniversary, and 7 more Great-Grand-Kids! The reason I asked about enclosure detail is "The Rest of the Story"! A 5-year old 21,000 Hp induction-motor, driving a refinery compressor, was returned to service after some...
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    PanelView plus 600 (Allen-Bradley) internal battery replacement

    KrzysztofG1... Welcome to Control Automation I suggest Googling its Manual. Instructions regarding Battery Replacement are on Page151! Regards, Phil Corso
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    How to achieve Parallel Operation of More than 1 Diesel Generators (Common Gen Bus ) and Utility Transformer

    owais766... Also search for "The Physics of MV Neutral Grounding"! Regards, Phil Corso
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    How to achieve Parallel Operation of More than 1 Diesel Generators (Common Gen Bus ) and Utility Transformer

    owais766... Did you find it? Regards, Phil Corso
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    How to achieve Parallel Operation of More than 1 Diesel Generators (Common Gen Bus ) and Utility Transformer

    owais766... Use the search method (Magnifying lens at top of page) for NGT vs NGR! Regards, Phil Corso
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