GE 9E Gas Turbine Dry Cleaning
Looking for information on valve line up for GE 9E gas turbine dry cleaning
MODBUS RS-485 Connections in Parallel
Multiple RS-485 MODBUS slaves connected to Modbus Master
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...
Speed Pickup vs Frequency Transducer for Speed Signal
Based on your experience, which sensor/signal is better for speed control in a generator, a speed pickup or a frequency transducer?
on 24 May, 2015 - 8:32 am
delirios, How are you measuring the accuracy of the speed pick-ups--by a value on a display or a...
GE Gas leak Test Pass/Fail
How are the requirements/constants for passing or failing a gas leak test calculated?
on 28 May, 2015 - 1:37 pm
ControlQuest, Please provide the current values of the four gas leak test Constants, as well. ...
By be_anon on 27 May, 2015 - 2:20 pm
The constants Controlquest refers to are part of the "bottle test" that is done during...
on 27 May, 2015 - 8:56 am
Controlquest, The Gas Leak Test is a test which has been implemented to protect against stop...
Why is TTRXB > TTK0_I for CPD < TTK0_C?
It appears that TTRXB is greater than Isothermal Curve by about 30F
on 29 May, 2015 - 1:53 pm
cactus_chris, I'm sort of following what you're trying to describe, and I can say I don't recall...
Study Guide of Run/Stop Operating Modes
Looking for a study guide of run/stop operating modes for an automated system
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.
Open Permissive Command for MOV
Posted by Mohammed Najeebuddin on 28 May, 2015 - 3:58 am
How can we configure "OPEN PERMISSIVE" Command in the MOV Either From MOV Side OR IN SCADA?
By PLC Engineer on 29 May, 2015 - 5:29 am
Normally, if you have to change, or add permissives, it s advisable that you change it directly in...
After the inverter is synchronized to the grid, what makes the current to flow into the grid?
on 28 May, 2015 - 4:00 pm
Oryan, I've often had the very same thoughts when considering the differences between inverters...
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...
ROCLINK800 Floboss 107 MODBUS Slave configuration
I am trying to configure the Floboss 107 as a MODBUS Slave with specified register I/O parameters as specific MODBUS addresses.
By Randy Sirois on 28 May, 2015 - 8:07 pm
Kardel, I am trying to do the same thing using the 1400 B-Series and a Floboss-107 and I'm not...
Generator Breaker Tripping in Island Auto Mode
Generator Breaker of QAC800 Make Atlas Copco is Tripping in Island Auto Mode
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...
SCADA for Electrical Metering
Looking for a SCADA system for electrical metering
Difficulties in creating reports with wincc SCADA.
Understanding Blower Ratings
When a blower is rated for ____ CFM @ ___ SP @ ____ RPM, where is the static pressure measured?
Frame 9E Cooling Water System
Frame 9E Cooling Water System - Flame scanner overheating & Aft support legs temperature high
on 27 May, 2015 - 6:16 pm
Arun/kumara, Are you also continuously bleeding air/water from the lines of the other unit back...
on 24 May, 2015 - 9:10 am
Arum/kumara, To properly calculate a differential across an orifice one would need to know the...
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...
Multiple Modbus RS485 device On same RS485 to USB convertor
Connect two or more RS485 Modbus device to single USB port.
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...
Offset Error Rosemount 1056 Analyzer with 3900VP pH Probe
Attempted to calibrate the analyzer. Offset error of 110 mV with a max possible 60 mV. Verified probe good with known functional analyzer.
Controlling Valve Outputs Connected to Step 7 via PROFIBUS
how to control festo cpv-10 Dl02 connected profibus with s7 300 & 315-2DP cpu?
I'm having difficulty reading actual voltages etc with MODBUS software, is this possible?
Conductor NT 6.0 Compatibility
ABB Conductor NT V6.0 Compatibility With windows 7 Pro 32bit
Why we don't have the gas leak test for the Frame5 GE machine?
Starting Clutches of GT Frame 7E
We have failure in our gas turbine's starting clutches
By Ayed on 25 May, 2015 - 6:25 am
Dear I will divided your reply into points. 1- Suction of Aux. hyd oil pump. It is always,...
High Discharge Temperature of Gas Turbine Atomizing Air Compressor
we are operating two frame 5 gas turbines having power output of 18MW. Recently we restored the compressor on one of our turbine. After start up the discharge temperature of AA compressor reached to 190 degree C.
on 25 May, 2015 - 4:22 am
AW, Have you asked GE this question? If so, what was their response? Is there a cooler in the...
Busbar Differential Protection
Busbar Differential protection for MV switchgear for 2 out of 3 (2/3) Incomer logic
9E DLN1 - Fail to go Premix Transfer
Frame 9E unit starts normally, but going from liquid fuel transfer to gas transfer unit goes into extended lean lean.