from the Electrical engg department...Generator Field
Reason for using DC power for alternator field winding.
akhil kangath, Yes, there would be induction if the shaft were not rotated when AC was applied...
By akhil kangath on 5 March, 2014 - 8:40 am -
alternating current is varying one...so there is a chance to emf induction even we did not rotate...
from the Engineering department...Yorkshire Switch gear YSF6
I need user manual or any technical drawings regarding Yorkshire YSF6 circuit breaker 11KV,630A
By Craig on 5 March, 2014 - 5:32 pm -
Does anyone still have a copy of a service/workshop manual for there Yorkshire YSF6 switchgear? ...
from the instrumentation and control engg department...Proportional control
why the response of proportional control is exponential?
from the Instrumentation department...University courses in Canada
looking for some direction on continuing education
By Allen on 4 March, 2014 - 5:45 pm -
I am also a Inst-Jman in Alberta but I also have a 2yr diploma from out east in Toronto. It's...
from the Forum department...ABB MB300 Connection to Pi using OPC
Anyone used Novotek OPC to connect ABB MB300 Connection to Pi?
from the Forum department...firing temperature calculation
GE gas turbine firing temperature calculation
GTT, I did not get a chance to download the file. I've since been told there is a newer revision...
By GTT on 3 March, 2014 - 3:27 pm -
Dear CSA, I want to know what was reply (later on to the question) of this message. I don't see...
from the Software Engineering department...Creating a Modbus interface
Have any of you used the C-more HMI touchscreen and written the connecting interface?
from the Automation List department...Control valve positioner
I would like to know the operation of positioner.
By Safar on 2 March, 2014 - 9:57 pm -
One problem i'm facing calibrating with DVC6200 is when the valve is set to fully closed, there are...
from the Control Engineering department...PID Controller using 8051
A PID controller using 8051
Question 1. Yes, the 250 ohm resistor will work fine. Make sure you have a precision resistor,...
from the None department...Explosion proof loop in NEMA 4X junction box
Using an Explosion proof loop in a NEMA4x Junction box
By W.L. Mostia on 28 February, 2014 - 7:09 pm -
It depends on the area classification of the area where the junction box will be installed in. You...
No, not in the hazardous area....
By d- on 25 February, 2014 - 1:00 pm -
You must consult your local fire codes and determine the electrical area classification for the...
from the rOperations department...Cause of High Neutral Current
Cause of High transformer neutral current
Persie... the current values you listed yield an Ampere-Unbalance-Factor, AUF, of 3.7% if you...
By Persie on 27 February, 2014 - 7:17 pm -
Even we are facing the same problem, we have 5 LT transformers 6.6kV/433V 2MVA DYN11. New sixth...
from the Contactor Evaluation department...Which contactor brand?
How would you rank side by side the main contactor brands?
By James Ingraham on 27 February, 2014 - 10:19 pm -
Contactors could be used as a perfect example of a commodity in an economics class. Eaton,...
By Steve Myres on 25 February, 2014 - 1:00 pm -
I've used AB, ABB, Telemecanique, and others, and they all seem to work OK if properly selected....
from the Forum department...Avon 1535 Servo Actuator
Replacement of Parker Electro-hydraulic servo actuator with Parker Electric servo actuator for fuel control in Avon 1535
By Ray Ream on 27 February, 2014 - 9:05 pm -
We manufacture high torque electric actuators can you send me a spec sheet on the valve you are...
I don't believe it is possible to replace the hydraulic actuator on your existing Fisher metering...
from the Electrical department...Harardous Area Verification Dossier
Trying to understand Harardous Area Verification Dossier
from the Forum department...Preparation for Field engineer interview
Looking for advice on how to stand out during a job interview
Omer, So, you want to be a field engineer. It can be a very rewarding profession--both...
from the Automation List department...contactor or relay?
basic differences between contactor and relay?
By G. Borges on 26 February, 2014 - 2:01 pm -
The distinction of a relay as switching AC (almost always only single phase) or DC pilot/control...
from the Forum department...Level Transmitter Sizing Inputs
Inputs required for sizing and specifying a Level Transmitter
from the Please Help department...Generator Hydrogen Loss
Need help in determining cause of H2 Loss.
DFoster, Thanks for the feedback--and the troubleshooting process you employed! Both are most...
By Dfoster on 25 February, 2014 - 5:14 pm -
Eventually found the problem. For others who may have a similar problem.... Found a small leak on...
By sardar9 on 22 February, 2014 - 6:14 am -
> Could you explain specifically where that cap is located. You can not sniff around the cap...
By Dfoster on 21 February, 2014 - 9:28 am -
Could you explain specifically where that cap is located. I'll be going out later today to sniff...
We have F7E GT. We had same problem with excessive H2 loss at one of the GT. We found out after...
By JFB on 20 February, 2014 - 9:28 pm -
I am not familiar with CTs, but think the seal oil is about the same as STs (Also not familiar with...
from the Power operation department...Boiler master control
If possible boiler outlet temperature master control
By Heni Zouaoui on 25 February, 2014 - 5:15 am -
Dear gentleman I am sure that you have the master controller for the steam temperature control...
from the Electrical department...Electrostatic precipator EPS spark and arc problems
The Electrostatic precipator EPS for our Fuel oil boiler have current and voltage fluctuation and also spark and arc problems
from the power department...AC Voltage Regulation Methods
How to control and regulate the output AC voltage?
from the Electrical department...Sami conductor layer on cables
Sami conductor layer/ tape on HT 6.3KV or 11KV cable and HT generator winding coils.
By Shaheed ul Islam on 23 February, 2014 - 7:49 am -
Res/ Sir Phil Corso I am grateful. Best Regards, Shaheed...
Shaheed... see Control.com Thread: http://www.control.com/thread/1026216510 Regards, Phil...
from the operations department...Steam Turbine Control Valves- GE D11
Regarding Protection on Steam Turbine in response to the control valve and stop valves position feedback.
By william on 22 February, 2014 - 9:50 am -
Dear All, Currently I'm having a similar problem. our steam turbine IV-1 closed and failed to...
from the Forum department...Maintenance Program for Transformer
Preventive maintenance program for transformer on a production line
Jim... 1) Is daily load heavy-industrial, or light-maufacturing? 2) What is load in kW, and...
from the instrumentation department...generator hydrogen cooling system
hydrogen cooling system for GE frame6 generator manual
Ervin N Galera, In thinking about this, has there been a drop in the cooling water temperature...
from the Insrtumentation and Process department...Orifice plates for compressor anti-surge application
Orifice assembly for 30" pipe lines, Constraints on maintaining the straight length as per AGA3 or ISO 5167
By d- on 20 February, 2014 - 3:08 pm -
averaging pitot type probes work somewhat better in limited confines. NPS 30 plates can be used...
By otised on 19 February, 2014 - 9:32 pm -
As long as the orifice is ONLY being used for anti-surge control on a typical pipeline compressor,...
from the Serious department...Wind Farm SCADA
To understand the ground level details of SCADA configuration in wind farms.
from the Forum department...Remotely process and pump control
Specifying a low pressure switch/transmitter to de-energize two upstream pumps.
By syzygy on 19 February, 2014 - 3:42 pm -
Ashcroft offers the N-Series which is also sensor-based, with independent set & dead band,...
If one studies too zealously, one easily loses his pants.
-- A. Einstein.
Servo, stepping motor control, analog & web HMI in one system!