AC Interference on Digital Input Circuitry
Posted by elabbassy on 28 May, 2015 - 1:13 pm
Digital Inputs Activated/triggers when Battery DC supply get mixed with AC component causes trips in Substation.
By PLC Engineer on 29 May, 2015 - 10:00 pm
Dear Elabbassy, Any analogue component in your DC supply outlet will affect the DI. It is...
By elabbassy on 29 May, 2015 - 10:10 am
@PLC Engineer: Thank you for your valuable response. my concern is about spikes on DC power...
By PLC Engineer on 29 May, 2015 - 3:59 am
For a DI, any spike greater than 12V is considered as an input. Although the signal input might...
Air Inlet Pressure Setting for Nitrogen NG54 Make Atlas Copco.
How to change the Air Inlet Pressure Set point from 10 Bar to 8.5 bar for Nitrogen Generator NG54 Make Atlas Copco.
calculations for the moment of inertia for a solid cylinder.
By Sharath on 28 May, 2015 - 10:57 am
Hello Phil, Thanks for responding back. Based on values expressed in my previous post GD˛/4...
By S Sharath on 20 May, 2015 - 11:13 am
Hi, I tried to understand your comparison by running some numbers in both unit system. Can you...
SCADA for Electrical Metering
Looking for a SCADA system for electrical metering
Understanding Blower Ratings
When a blower is rated for ____ CFM @ ___ SP @ ____ RPM, where is the static pressure measured?
By Steve Myres on 21 May, 2015 - 5:14 pm
Generally speaking, your CFM will be proportional to the rpm, for a given system curve (don't know...
By Steve Myres on 20 May, 2015 - 10:45 pm
The spec refers to the difference between the inlet and outlet pressure, the rise that the fan is...
Speed of Synchronous Generator
Posted by Muhammad Salman on 26 February, 2010 - 4:08 pm
Why Speed of Synchronous Generator decrease with increasing speed?
on 26 May, 2015 - 2:24 pm
jannatul, you one basic question needs many corrections. The size of an engine is equal to the...
By jannatul on 26 May, 2015 - 4:35 am
sir, i need to know one basic question answer. suppose my engine has one cylinder and its...
Lube oil temperature and bearing vibration
Is there any correlation between lube oil temperature and bearing vibration?
By Hdixit on 27 May, 2015 - 2:21 am
You can check my paper "Effect of lube oil temperature on turbine shaft vibrations" on...
Increasing Power in Synchronous Generator
We have a STG the output power is 26 MW I need to increase it to 31.2 MW
on 26 May, 2015 - 2:11 pm
Hothifah, 1) First, you need to understand that generators are electrical machines that convert...
Busbar Differential Protection
Busbar Differential protection for MV switchgear for 2 out of 3 (2/3) Incomer logic
By magesh on 23 May, 2015 - 4:43 am
> The Bus B will remain energized for fault in Bus A. Next if a further fault in Bus B...
Rectifier from 120Vac to 125Vdc
I'm trying to obtain 125Vdc from a 120Vac OR other way of obtaining 125Vdc from a power generator of 3kW
By Curt Wuollet on 21 May, 2015 - 10:14 pm
IIRC, you might get close with a rectifier and a choke input filter, under load. But I haven't...
By JSPRINGS on 21 May, 2015 - 3:11 am
To obtain AC from DC it is better to have an AC source of higher voltage. For this you may have...
MEGAC and Fuel Gas Valve Control
Looking for information about MEGAC and fuel gas valve control of turbo-generator
AutoConfig Software Connection Bug
*Seeking Advice* ThermoScientific's AutoConfig SW will not show the Com1 & Com3 select option under the communication parameter window.
Coding Using LQR for Synchronous Generator
Posted by Engr Muhammad Zubair Ali on 21 May, 2015 - 1:12 pm
Need advice about coding using LQR for modeling and control of synchronous generator
need gateway to link KNX network to ethernet network
GT not running at 100% rated RPM in Isochronous mode.
GT is not running at 100% rated speed when run in Isochronous mode but runs at 100% rated RPM when run in Droop mode.
on 19 May, 2015 - 10:51 pm
CSA, Thank you for the reply. Both our units are running TMR Mark6, both are commissioned at...
By SB on 19 May, 2015 - 4:03 am
CSA, Thank you for your reply. >When the unit that doesn't have speed issues when running...
on 18 May, 2015 - 9:27 am
SB, When the unit that doesn't have speed issues when running in Isoch mode is in Isoch mode,...
on 16 May, 2015 - 9:18 pm
CSA, Thank you for the quick reply. >please do tell what RPM the unit IS running at when...
on 15 May, 2015 - 4:34 am
CSA, Hello! (after a long time though) > It's most likely that someone has disturbed the...
MODBUS TCP vs IEC 61850 for Switchgears and Substations
Looking for a comparison between MODBUS TCP vs IEC 61850 for switchgears and substations
Siemens PCS7-FF Communication with Fieldbus
Foundation Fieldbus configuration issue in SIMATIC Manager Software
I am new in the field of automation. Could anybody tell me the difference between PLC and DCS other than I/O handling capacity?
By BOLARINWA GBENGA JOSHUA on 17 May, 2015 - 12:42 pm
DCS (Distributed Control System) is superior to PLCs( Programmable Logic Controllers), though some...
Migrating Siemens PCS7 application to SPPA-T3000
We are looking for engineering support to integrate our gas turbine application based on PCS7 into the T3000 application server.
safety integrity level study
Hi, If any one has performed the SIL verification, I have following queries as below.
Want to convert flue velocity to NTP
Generator Hydrogen Cooling System
hydrogen cooling system for GE frame6 generator manual
on 14 May, 2015 - 12:04 pm
I don't understand the question. If you're saying that hydrogen consumption exceeds the amount...
Improvements in DCS System
Posted by Anil Rajak on 12 May, 2015 - 8:11 am
Please share desired improvements in the DCS which is not available in any of the DCS.
Is it possible to polarize the bus with a 3.3V supply?
Limits to Line Voltage Due to Capacitance
Our central generation is 13.8kV, and has a 200A low resistance ground. A feeder runs 18 miles, and is mounted 7' above grade. To limit current draw due to capacitance, we are using 13.8 kV. Is there a way to use 35.5kV?
Solar Turbine not firing off, valves open up but sounds like starter may not be engaging?
on 12 May, 2015 - 6:39 pm
After a maintenance outage, or an outage where mechanical work was performed on a gas turbine it's...
By rvsaradhi on 12 May, 2015 - 2:11 pm
Hello kindly check air intake filter D.P and clean filters. chemical wash for axial...