RSS SubjectsBlogs about "Phase"

Phase

Phase EMarketing Other Blogs Or Web Blog
2011-12-06 14:19:00
bу Hugger Industries I сеrtаі•-5Ɩу ԁο חοt talk іח tһіѕ area mу hair wіtһ һіѕ gray locks аחԁ reddish black color … Tһеѕе salons, spas аחԁ day spas іח particular. Each room аחу services οr harvest іt offers need tο һаνе a sustainable way tο keep customers coming through tһеіr doors аחԁ back fοr more. ...
Samsung starting to produce 512Mb Phase-Change memory
2009-09-23 22:48:00
Samsung has announced that it has started producing 515Mb Phase-Change Memory, aka PRAM! Interestingly, this is targeted for mobile devices, as it gives high-performance and low power consumption. Samsung says…
By: PhoneArea
Maryland Cancer Institute Seeks Participants for Phase II Trial
2009-09-21 16:06:00
A cancer institute in the Maryland area has been looking for participants to take place in the Phase II clinical trial for mesothelioma treatment. The National Cancer Institute in Bethesda has been seeking forty volunteers who have the asbestos cancer, mesothelioma to take part in the trial. The participants will have to be those that ...
isolation transformer / single phase
2009-09-19 11:38:00
dear sir , could you give me the voltage between the secondery and primery winding for 220 v single phase isolation transformer as below : phase primery to phase secondery . phase primery to neutral ral secondey. phase secondery to earth . neutral secondery to earth . r
Fault Current for Multiple Transformers in Single-Phase App
2009-09-18 17:24:00
My customer has started constructing a building without properly checking the the hydro in the area. Subsequently the utility only has single phase 14.4KV and the customer' requires 325KW of power, I know single phase what a nightmare!!! I'm the electrical contractor and I'm proposing that
how to test single phase isolation transformer
2009-09-15 12:54:00
dear sir . could you guide me how to test the isolation transformer / single phase . and so is i use a lamp for testing between the primarey and secondery winding does it lighting if i use a primery phase with a secondery neutral . regard
Conduits Overheat in Three-Phase System
2009-09-14 18:28:00
Can overheating of the conduit come from enclosed conductors when one phase predominates the other two phase, e.g. 4 Phase A circuits, 2 Phase B circuits and 1 Phase C circuit or when only two of the three phase are enclosed? thanks.
Using 3-Phase MCCBs for 2-Phase Applications
2009-09-11 17:27:00
Dear Sir, We need no use some 2 phase breakers in the range of 400 A to 250 A capacity, but available breakers are all 3 phase. I want to know whether there any problem of use of 2 phases of 3 phase breaker for 2 phase application. Because I have seen some places where they use jumper b
3-Phase MCCBs for 2-Phase Applications
2009-09-11 17:27:00
Dear Sir, We need no use some 2 phase breakers in the range of 400 A to 250 A capacity, but available breakers are all 3 phase. I want to know whether there any problem of use of 2 phases of 3 phase breaker for 2 phase application. Because I have seen some places where they use jump
circuits for three phase motor contactors
2009-09-08 05:32:00
I have a very nice Korean made lathe. I think some oil leaked from the thread change gear box and it got into the three pole contactor for the forward motor circuit. I need to replace the contactor with an American made contactor and would like to see some circuit diagrams for this type control. I a
Circuit diagrams fot three phase motor contactor installations
2009-09-08 04:04:00
I have a very nice Korean made lathe. The 3 phase motor contactor burned out and I must replace it with an American made contactor. I wonder if one of you might direct me to some good circuit diagrams showing how two 3 pole contactors may be used for control of reversible 3 phase motor. My motor
Phase Sequency Changing Problem
2009-09-03 11:30:00
Good day to all, I have faced some problem my Data Center Power related issue. My problem as follows: 1. Some times our commercial power supply company changing the phase sequence (RYB to YBR or BRY). 2. As a result our Air-con are stoped for performance (Compress
3 Phase Variable Motor Speed Controllers
2009-08-27 10:31:00
I need to build a speed controller for two 3 phase motors which are parallel to each other and they are connected by means of two ring gears. they are used to vibrate a base plate. each motor has to turn in the opporsite direction from each other. I know I can buy starter boxes i just need to use a
Sizing of Transformer for Single Phase and Three Phase loads
2009-08-26 19:49:00
Currently I am executing a project wherein power supply is to be provided to 5 nos. of Analyzer cabinets. The power supply to these analyzer units are at voltage levels 120V and 220V. The VA of the load connected to each analyzer cabinet is - @120V, 1Phase, 60Hz = 2320VA and @220V, 1Phase, 60Hz = 13
Three-Phase Power Source
2009-08-13 15:32:00
Hi everybody here,, I'd like anyone help me how to get a three phase source of 220 volt …having in mind that the available power source is three phase 380 volt Regards
Capacitors for Starting Single-phase AC Motors
2009-08-07 13:46:00
I wish to know the size of the capacitor i.e. in farrads that is required for the starting of a single phase a.c. motor e.g. does a 1Kw motor require 20 micro farrads for starting?? if not what is the value of the capacitance for a 1 Kw motor?? Thanks
Exciter Function in Three-Phase AC Generator
2009-08-05 22:14:00
I would like to know the function of exciter in 3-phase AC generator. As far that i know its gives the starting torque to the generator which helps in pre acceleration of the generator. Is there other function of exciter in the generator? A detail circuit diagram will help too. tq
3 Phase Motor
2009-08-01 23:26:00
hi to all, what will to a 3ph motor if its phase has been changed? ex: RYB(connection in source) is connected to BYR(connection in motor) Thank you.
Need Help on Three-Phase Extension Cable
2009-07-31 07:32:00
hi all, I got a 10A three phase machine and got a 10A three phase socket at the wall. That's not a problem when connecting it just like that to the power. My problem is that i got a 20 amp leakage tester, the 10A three phase machine plug goes in to the input of the leakage tester but the 20
Laying of Multiple Cables for Each Phase
2009-07-30 09:52:00
Dear Sir, We are using multiple conductors ( 8X300sqmm) to connect our main supply to the MSB (3 phase). These cables are supposed to be laying in PVC conduits. I would like to know the recommended practice we should follow when we using multiple phase conductors. A) Is it advisabl
Can a VFD Control a Single Phase 3hp Motor?
2009-07-29 17:39:00
Can a VFD be installed to control a 3hp, 208V, SINGLE phase pump motor? I've seen the parameters and successful installations of a VFD to control a 208V, 3-phase motor with a circuit powered by 208V, 1-phase power (two pole breaker). What I am wondering, is this: Given an existi
Phase to phase and phase to Ground Clearence of Power Transmission line
2009-07-29 07:48:00
Recently I haved BSC Engineering Degree. I would like to know the Mor mal or Conventional Phase to phase and phase to ground Clearence of 33 kV,66kV, 132kV, 230kV, 400kV, 500 kV,600kV, 800kV Power Transmission lines.
Three-Phase Transformer Application
2009-07-28 21:26:00
In a 480 volt 3 phase wye system, (240 volt) is needed. Would a wye/ delta 3 phase step down transformer (480/240) be needed or a delta / delta (480/240) be needed?
Two-Phase Systems
2009-07-27 21:27:00
Is there anything such as two phase system used now a days? If it is, can you explain it with the vector diagram? We have a UPS and it has 240V output with two hot wires? Some body of my group would like to call it as 'two phase' system. I don't agree to this. To me, it should be called single phase
Reversing 1.5-KW Single-Phase Induction Motor
2009-07-27 06:36:00
Yair... guday folks, bit of a newbie with this computer carry on...and this is my first post on this board. I know enough about electricity to be dangerous so I leave all my work to professionals. I have a problem though. I need to be able to stop/start and forward/reverse a 1.5 kw motor fr
HT Cable and LT Cable for LT Single-Phase Loads
2009-07-26 14:58:00
We have a Diesel Generator(DG) Set of 110 kVA installed in office-cum-residential campus. Soon we are going to replace the same with a 250 kVA DG Set. The LT Cable to the residential feeder is of size 3.5 C x 120 sq mm Al Conductor PVC Armoured at the DG panel end but terminated to the resident
Type of Winding in an Brushless AC genarator single Phase 15 KVA
2009-07-25 09:05:00
Hi all , We had just taken up a project of alternator development , & keenly interested in the type of windings , number of turns thickness etc for both the stator & rotor , please advice regards mahendra
steel,welding,ndt,heat treatmrent,structure,phase transformation
2009-07-18 07:15:00
hello to every body in forum i put a discussion stainless steel with martensite structure is magnetic. why austenite is non magnetic . any suggestion for the heat treatment( normalizing or annealing) after the welding of stainless steel or the stress relieving of S.S . any ASTM code /standard
100A 3-Phase Cutler Hammer Pump - Breaker Model HMCP100R3C
2009-07-16 16:48:00
Hi we have been having problems with the the above mentioned breaker. We have gone through 4 breakers within the year. Basically what is happening is that one of the phases of the breaker is burning up without tripping the breaker. This type breaker is being used with pump starters to start pumps
Dual phase meter
2009-07-13 11:14:00
We want to install gas meter to measure 200 mmscfd @ 600 psig having condensate with gas. plz suggest best suited meter for this application having 1% accuracy.
Dual-Phase Gas Meter
2009-07-13 11:14:00
We want to install gas meter to measure 200 mmscfd @ 600 psig having condensate with gas. plz suggest best suited meter for this application having 1% accuracy.
Phase To Phase Voltage Should be zoro volt
2009-07-11 13:20:00
? When we are connecting two SAW welding power source with three phase of 415 volt,If I am checking voltage between 'R' Phase of Welder 1 w.r.t 'R' phase of welder2 I am getting 40 VAC where as it should be zero volt if I am connecting machine on same destrubution board same line. I don't kno
3 phase grids around the world
2009-07-11 01:58:00
Hey, I am working for a Wind Energy Company, Helix Wind, and are turbines are designed to connect to the 3 phase power grids. We are expanding globally and I need to see where are systems can be installed currently. My question is: What countries are the 3 phase power grids used in?
Phase Imbalance Problem - Welding Transformer
2009-07-10 08:40:00
When we are using Two lines of Three phase(i.e 415 VAC each Phase) Welding Transformer on Power Generator then Phase will get imbalance. so how we can use this welding equipment on power generators.welding trasfomers is capable to delevered 400 out put current on 60% duty cycle.
Winds in a Three-Phase Motor
2009-07-09 00:37:00
I am having 3Ph motor (rewound) ,In terminal box i found 6 leads coming from single passage and all 6 leads are not marked like U1,V1,W1,U2,V2 & W2 ,So can you plz help me to find or mark the leads accordingly OR tell me the procedure or technique to find the windings... thank you
Three-Phase Mitsubishi Servo Drive
2009-07-08 20:23:00
Dear all, I have one mitsubishi servo three phase drive.One phase of it get short. What will be the reason. How can I rectify it or what will be the solution not to have same problem again. Please guide me.
Regulating the Speed of a Single-Phase Motor
2009-07-06 06:31:00
How to Regulate the Speed of a 2-HP 220-VAC Single Phase Motor I have a number of Phase Inverters by which I convert single phase 220 VAC to three phase 220 VAC. The benefits are numerous among them the ability to under-speed or over-speed the motor. However, I've not been able to fi
Three-Phase Transformer Loses One Phase
2009-07-03 23:00:00
what happens when a 3 phase transformer losses one phase?how would the voltage ,current,power and other parameters be affected? GHANA
Secondary Voltage on Ungrounded 3 Phase Transformer
2009-07-01 01:06:00
We have a situation where a 4160V delta: 480V wye transformer was installed without the typical neutral to ground bond. The only grounding is to the cabinet via the steel conduit. All loads are three phase and no neutral is run with the secondary condutors. When we measure A:B, B:C or A:C
3-phase motor needs jogging to start
2009-06-30 09:27:00
A 3-phase motor needs manual jogging to start. It would not start automatically when powered. From my reading, it seems like there is something wrong in the revolving magnetic field mechanism. Any help on how to troubleshoot this problem? Thanks a lot.
Three-Phase Motor Needs Jogging to Start
2009-06-30 09:27:00
A 3-phase motor needs manual jogging to start. It would not start automatically when powered. From my reading, it seems like there is something wrong in the revolving magnetic field mechanism. Any help on how to troubleshoot this problem? Thanks a lot.
The phase shift popple illusion
2009-06-29 10:31:00
The phase-shift illusion. When Gabor patches are aligned vertically and the phase of carriers is adequately shifted, the row of the envelope windows appear to tilt toward the shift.
Vector Group of single phase 6.6/0.215 KV Transformer
2009-06-24 10:50:00
Tell me about the vector gruoup of the single phase transformer. I read it is "Lio" but i am unable to understand it. Please define it?
Vector Groups and Single-Phase Transformers
2009-06-24 10:50:00
Tell me about the vector gruoup of the 6.6/0.215 KV single phase transformer. I read it is "Lio" but i am unable to understand it. Please define it?
3 phase ELCB with unbalance single phase load.
2009-06-24 08:06:00
If i will use 3 phase 4-pole ELCB in unbalance single phase load, will it trip? How about if using only L1, L2 & N (L3 is open)?
Three-Phase ELCB with Unbalances Single-Phase Load
2009-06-24 08:06:00
If i will use 3 phase 4-pole ELCB in unbalance single phase load, will it trip? How about if using only L1, L2 & N (L3 is open)?
220-240v 3 phase generarors
2009-06-23 10:47:00
Dear Sir, Kindly can you inform me that is there any generator`s brand with this specifications: 3 phase / 220-240 V / 0.8 power factor / 15 KVA. Is it right 3 phase 220-240 voltage ? or it is single phase only Thanking you in advance .
Sourcing Three-Phase Generators
2009-06-23 10:47:00
Dear Sir, Kindly can you inform me that is there any generator`s brand with this specifications: 3 phase / 220-240 V / 0.8 power factor / 15 KVA. Is it right 3 phase 220-240 voltage ? or it is single phase only Thanking you in advance .
DEtecting Phase Angle in a PWM Recitifer
2009-06-23 00:25:00
Hi , Could somebody tell how the angle is sensed in a PWM rectifier . Regards Fitch
Three-Phase Active Power Filter
2009-06-21 22:18:00
plz can any body help me regarding simulation of three-phase active power filter for reducing harmonic distortion from supply current.
128703 blogs in the directory.
Statistics resets every week.


Contact | About
© Blog Toplist 2017