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PhilCorso
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Recent content by PhilCorso
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RTD thermal protection HV Motors
@Djab... Thank you for the information. The motor manufacturer may have proprietary information related to a patent! How much money is in question? Phil Corso
PhilCorso
Post #9
Apr 8, 2024
Forum:
Electrical Engineering
P
Mineral Insulated Cable Ex e II and EEx e II
@gps82... The high resistance indicates to me that perhaps its used for heating concrete slabs for plazas or the like! I used something like it in 1962 for the Pay-Plaza of the Verrazzano Bridge in New York City! Phil Corso
PhilCorso
Post #3
Apr 8, 2024
Forum:
Electrical Engineering
P
RTD thermal protection HV Motors
@Djaba What do you mean by "Exploded view of motor"? Regards, Phil Corso (PE, Semi-Retired)
[email protected]
PhilCorso
Post #7
Apr 7, 2024
Forum:
Electrical Engineering
P
Surge in AC DC Converter
@Kavitha... Welcome to Control Automation! !. When you say "Jumper" to you mean both 5 Vdc sources are connected together? 2. Or are the two 5 Vdc connected via diodes? Regards, Phil Corso (PE, Sem-retired)
[email protected]
PhilCorso
Post #2
Apr 5, 2024
Forum:
Electrical Engineering
P
Generator tripping on differential protection relay
@ajb8787... Were u able to retrieve the "87" and "87N" Test procedures, despite the Forum's Refusal to accept my files because they were too large? Regards, to all! Phil Corso (PE, somewhat retired) PS: there are Sensitivity and Stability checks as well, if needed!
PhilCorso
Post #10
Apr 1, 2024
Forum:
Power Generation
P
Generator tripping on differential protection relay
Generator tripping on differential protection relay Reply THREAD STARTERajb8787 START DATEYesterday at 1:48 PM Mark Forums Read Search Forums Watched Forums Watched Threads New Posts Unwatch Thread Starter ajb8787 Yesterday at 1:48 PM #1 Hey was hoping some may be able to provide some...
PhilCorso
Post #9
Apr 1, 2024
Forum:
Power Generation
P
Generator tripping on differential protection relay
@ajb8787... '87' Test attached!
PhilCorso
Post #8
Apr 1, 2024
Forum:
Power Generation
P
Generator tripping on differential protection relay
@ajb8787... Welcome to Control Automation There a relatively simple way to set an "87", and "87N", but it depends on experience of those doing it! If you, or others in your facility, are confident that working around a live, rotating machine but separated from the load bus, I will post the...
PhilCorso
Post #5
Mar 31, 2024
Forum:
Power Generation
P
homeload of two generators connected to one step-up transformer
@Ali A. Ismail I believe ControlsGuy25 is asking for a Single-Line-Diagram (SLD) of system you want help with! Regards, Phil Corso
PhilCorso
Post #8
Mar 29, 2024
Forum:
Power Generation
P
Honeywell Safety Manager Quadruple Modular Redundancy
@aqib... Which Honeywell office are you in? Regards, Phil Corso
[email protected]
PhilCorso
Post #5
Mar 23, 2024
Forum:
Programmable Logic Controller - PLC
P
Honeywell Safety Manager Quadruple Modular Redundancy
@aqib... Another "PRETECT" Statistic: It was installed in a Nuclear plant, BG&E in Maryland. No, not the reactor, but its Ancillary units consisting of 6 BFW pumps, and 2 Steam Turbine Generators! After a run of about a year, EPRI Study NP-5416s, concluded "PRETECT" could increase the On-Line...
PhilCorso
Post #4
Mar 19, 2024
Forum:
Programmable Logic Controller - PLC
P
Honeywell Safety Manager Quadruple Modular Redundancy
@aqib... Another "PRETECT" Statistic: about 4,000 Input Sensors and Output Actions! The idea began after having been assigned a 3-month start-up of the 1st LNG (Liquid Natural Gas) plant, in La Spezia, Italy. I left 7 years later, having literally "exploded" the old belief that a "false trip...
PhilCorso
Post #3
Mar 17, 2024
Forum:
Programmable Logic Controller - PLC
P
MV Switchgears & Busbar replacement
@asghar... Please provide the Single-Line-Diagram (SLD) of your plant's existing facility! If there been an substantial increase in plant kVA or MVA capacity, I can also suggest cost saving arrangements, as well! Regards, Phil Corso (PE, Semi-Retired)
[email protected]
(Boca Raton, FL, USA)
PhilCorso
Post #2
Mar 16, 2024
Forum:
Electrical Engineering
P
Honeywell Safety Manager Quadruple Modular Redundancy
@aqib... Calculate Overt Failure-Rate (False-operation, i.e., before required) and Covert Failure-Rate (Not Operating, i.e., when required) of each element? Regards, Phil Corso (Inventor of C-MOS Based "PRETECT" Safety System, 13,000,000 Hrs w/o Failure)
PhilCorso
Post #2
Mar 16, 2024
Forum:
Programmable Logic Controller - PLC
P
Voltage drop in Mark VIe control panel
@sonacontrol... Measure and record the current-flow at every Control fuse-block! It was something I insisted be done at every Start-Up I was a member of! Another was that the Control-Panel be served by redundant, but separate power sources! I was called to a plant that said my CMOS-Based Safety...
PhilCorso
Post #13
Mar 9, 2024
Forum:
General Automation Chat
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