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What will happen when 2 out of 3 poles of a 220 kv circuit breaker of a 330MVA Generator (of a steam power plant) is closed and one open when the generator (via GT) is connected (or synchronized)with 220kv bus?
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Santanu... The disturbance question I replied to was just the opposite of what you described, and I...
Santanu... if closure of the faulted-breaker at the instant both the generator-side PTs and the...
Santanu Das,
The answer to this is complicated to explain in words. The simple, but not...
Extreme vibration and loss of signal on level transmitters
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By Sam on 15 April, 2013 - 7:54 am -
Hi,
The FPSO's I worked on made use of Guide Wave Radars for their interface measurements. I...
Mark VIe PDIO cards failing very frequently. We are looking for a company to conduct an RCA on the failures and provide corrective actions to minimize/eliminate failures.
We are installing a multi turn pneumatic actuator for a gate valve, which runs on hydrocarbon gas. Do we need a hazardous area certificate for the rotary actuator?
what is the accepted margin between motor power and pump-maximum power?
Working on Project. Still in idea stage. Got one, but not sure if within the realm of reality considering my abilities...Just looking for someone experienced to yes or no whether this would work.
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By Ed W on 14 April, 2013 - 2:08 am -
MediaMation makes small PLC type devices that are designed to work with audio and MIDI. They are...
I'm working in the instrument construction field, i would like to ask all of you if somebody knows some cources can increase our skills?
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Hi,
There are lot of courses are being conducted for I&C professional throughout the world....
Hi,
Your friendly local moderator here. It would help people answer this question if you told...
When we try to put the machine to turning we get the following trip "Starting means turbine shaft fail to break turbine away"
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By Chandra on 13 April, 2013 - 12:27 pm -
We are using 6 Units Frame 9E gas turbines and we often have the problem with failure to break...
Controman makes an excellent point!
Be sure to check the lift or "jacking" oil pump...
Umar and KP,
Is there in your gas turbine what we call lift oil pumps for generator shaft...
Torque converters do wear out and do require refurbishment. If the site uses the cranking motor for...
By KP on 9 April, 2013 - 11:54 pm -
We have come across a same problem in same unit (GE9171, Mark VI) after 14,000 running hrs. Does...
The lube oil filter on GE Frame 9FA machines only works when we are opening the 1/2" Filter drain valve.
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Ashutosh,
You also have a P&ID of the lube oil system, which you can use to understand how...
24VDC Floating power supply fuse protection.
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By roy Matson on 12 April, 2013 - 7:21 am -
I have seen power supplies ungrounded with a pair of lamps
Positive - lamp - ground - lamp -...
By sakram on 10 April, 2013 - 6:02 am -
Dear Russ,
Thanks for your reply.
We are extending (+) to field limit switches and connecting...
By Sakram on 10 April, 2013 - 5:36 am -
Dear Bob,
Thanks for your reply.
We are extending 24VDC(+) from the PSU to the limit switches...
By Russ Kinner on 8 April, 2013 - 6:13 pm -
I use branch CBs to isolate the 24 VDC from its load but that is not "protecting" much of...
By Steve Myres on 6 April, 2013 - 8:13 pm -
It's bad practice to run your 24VDC ungrounded. I've seen it cause not only inexplicable bizarre...
By Bob Peterson on 6 April, 2013 - 5:35 pm -
To your first question - required can mean a lot of things. It might be a local government enforced...
Enraf data display suddenly disappears.
When temperature fluctuates the level goes beyond correct level giving some peaks. How to control the level even if the temperature changes?
I'm looking for a standard gray-code table, if one exists.
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By Nebojsa Mrmak on 10 April, 2013 - 1:14 pm -
> Might as well use a 256-byte lookup table for an 8-bit code. I'm not sure how far back the...
Can a XBT-L1000 file be converted to a Vigeo Designer file?
I want to communicate with Honeywell Total Plant Alcont - TDC3000
I'm trying to find a way to go to work on an Oil plant.
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Thank you for your feedback Dan it helps for sure, especially the connection between assembler with...
By Dan Ingold on 6 April, 2013 - 11:25 am -
Hi Rafluska,
Your background in AI and high-level languages (HLL) doesn't handicap you. If...
Does an electronic blinks (though the pulse rate is too low, about one pulse in 8-10 min, in a rated 3200pulse/kwh meter) even when i am not consuming any power at all?
Internal Panel Wiring Cable Voltage Rating
Standby card leds 1 and 2 has been switching on AVR Prismic
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By Sebastian Rebord on 5 April, 2013 - 1:27 pm -
When the AVR is operating in main and the balance with the standby is OK, LED1 and LED2 have to...
Looking for a transfer function for a solenoid valve which regulates the quantity of steam that is provided to a heat exchange coil
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Sebastian is right... i should have double checked my logic and math before i submitted that one......
By Sebastian Rebord on 5 April, 2013 - 11:32 am -
Declan,
As NIC said the easiest way is consider the transfer function as a first order delay...
Declan,
The easiest way is to assume that the model just involves a simple time constant....
The Valve I am looking at is a proportional valve (control valve) where the output flow is...
I need some help with selection of air velocity and temperature sensors & actuators that will work on hard environmental conditions inside the air-duct.
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By Bhavesh on 5 April, 2013 - 9:09 am -
Hi,
For temperature sensor, it should be kept in mind that high air speed and that too with sand...
What's the difference between DCS and SCADA systems?
DC Soft Start Ideas
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By Curt Wuollet on 3 April, 2013 - 8:25 pm -
That idea may work and you could play with the curve as needed but with low frequency pwm, the...
Up to how much low rpm can a BLDC motor be designed?
Desire to speed up Drawing
we are having 15 number of Ring main units with Schneider 11kv,RE2c type.we need a detector which will detect from outside of cable, we are using trefoil 630 sqmm xmpl cable.Any sensor's available,just we need to know which RMU's powe
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