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Neutral to Earth Voltage
2008-06-10 16:46:00 In one of the IT clusters the neutral to earth voltage is as high as 18V at 7th floor. Where as the neutral to earth voltage at other floors such as 1st to 6th floor is 3V only. We have provided 2N for the rising mains. Surpirsingly another tower which is located 250 Mtrs awary from thi
High voltage Sub station Electrical earthing sizing calculation
2008-06-09 19:18:00 How do I calculate earthing conductor size for a high voltage electrical substation?
Highpot test on a medium voltage switchgear
2008-06-07 21:28:00 Dear colleagues, I have to perform a highpot test on a medium voltage switchgear. From preliminary researches, it is not clear what are the requirements to meet NEC. Simple rules like the "twice rated voltage plus 1KV for one minute" used on low voltage certainly don't apply. What is the r
Plating Compounds for High-Voltage Buses
2008-06-06 17:52:00 I need a list of compounds used for plating. ( for bus maintenance )
Medium Voltage Cable Cross-Section
2008-06-06 13:33:00 how can we calculate the medium voltage cable crosse section
Calculating Touch Voltage for Water Heater Element
2008-06-06 13:04:00 Please explain how I could determine the touch voltage on the element of a water heater if it is only accessible by means of an elevator (lift) and if the routing of the supply cable is not available. Kindly use values to enhance explanation.
Why Use a Sheath Voltage Limiter in Single-Point Bonding?
2008-06-05 16:44:00 Why should we use "Sheath Voltage Limiters" in Single Point / Cross Bonded type of link boxes. What is the purpose?
high current voltage regulator?
2008-06-04 03:47:00 I didnt want to ask the question here because I know the talk of hydrgen on demand for better fuel economy is a sore subject here but I am desperate and this is the one place where I know I can get a good answer. I need to supply an adjustable voltage safely at an operating current of 30 amps with a
infornmation for thress phase auto voltage regulator 100kva
2008-06-01 09:21:00 we have three phase AVR 100kva of brentford make 1978 serial no 783072 dring no D33578 type RDOAVR80/110 we need circute diagram of this machine. please reply us as soon as possible. WE ARE WAITNG FOR YOUR RESPONSE........... email: nct17a@yahoo.com, khanjany@yahoo.
High Voltage
2008-05-28 16:00:00 High Voltage has been killin' it with hipster-infused electro goodness for about as long as FreeNYC's been keepin your nightlife lively. Week after week they light up Orchard street with a bit of glam, a bit of electro, and a whole lot of drunken hump day fun. Tonight is no exception with DJ sets from Gina Turner, Dan Oh, and Rok One. plus free vodka beginning at 11pm. Old Flyer 21+ Read More...Digg this | Email to a friend | Reddit
By: FreeNYC
Low voltage class one and two at 12 watts
2008-05-28 00:12:00 Is class one wiring required for a circuit that has a 200 va 24 VDC power source with a 0.5 amp fuse. I need to prove that it is or is not to a consultant. There are numerous systems installed all over the country that do not have class one wiring all the way to the load from the source and (
High Voltage Software Quantum3 graphics engine For Nintendo Wii To Offer ?X
2008-05-26 02:54:00 ?Most of the games on [the] Wii look like crap? according to High Voltage’s Eric Nofsinger who, apart from not mincing his words, belives that third-party developers need to ?step up to the plate and deliver [to show that] the Wii platform is capable of a lot more than what consumers have seen so far? and, to that end, he belives that the company?s new iteration of their Quantum3 graphics engine will serve to ?raise a new bar? as far as graphics quality on the Wii is concerned.
High Voltage
2008-05-21 16:00:00 High Voltage has been killin' it with hipster-infused electro goodness for about as long as FreeNYC's been keepin your nightlife lively. Week after week they light up Orchard street with a bit of glam, a bit of electro, and a whole lot of drunken hump day fun. Tonight is no exception with DJ sets from residents Dimitry and Prince Terrence along with special guests Dances with White Girls and Josh Link, plus free vodka beginning at 11pm. 21+ Read More...Digg this | Email to a friend | Reddit
By: FreeNYC
Conversion of Voltage of Frequency
2008-05-21 12:04:00 I want to convert 415V, 50HZ, 3Phase supply to 460V, 60HZ, 3Phase Supply. The approximate load is 2500KVA. What is the method?
Fan Voltage Regulator
2008-05-21 08:16:00 A warm Hi 2 everybody! Pls let this novice player know that : can general electronic fan voltage regulator (used for 230V AC) be used for 24 volt dc control? or some modification is required? Thanks & regards!
Power Interface Unit for Controlling Line Voltage Variation
2008-05-20 18:24:00 i want information about warking of PIU panel used in mobile base station to controling variation of line voltage
Why DC voltage?
2008-05-17 23:44:00 Dear friends, One easy question for you. In hydraulics systems for solenoid valves, PLC inputs/outputs and in many other circuits, for conrol voltage, Why DC voltage(12v,24v) is used? What are problems for use of AC? Thanks in advance..
Voltage Regulator
2008-05-12 12:46:00 Where would I find a 36v/4.2a power regulator? I want to use a regenetive speed controller which will try to send power back to the battery, only in this case the battery is a power supply so will wreck it. Need something to absorb the extra power...
Power and Speed Change with Respect to Voltage Drop
2008-05-09 15:40:00 I have a fan motor which runs at 230VAC @ 850 rpm. The power measured is 320. What happens if the voltage drops to 200VAC? Is there an equation to estimate the new rpm and power consumption (assuming the speed-Torque curve data is available at 230VAC). Obviuosly, the fan blade is the same.
Voltage references in embedded design
2008-05-08 23:21:00 Embedded systems that are dealing with DAC require a good voltage references. Despite all voltage references have their nominal values there are specific tolerances that indicates how much values can vary from nominal value. References as a rule are semiconductors that characteristics are effected by temperature. For instance if we decide to use a 2.5V voltage ...
On Load Tap Charger (OLTC) vs. Automatic Voltage Regulator (AVR)
2008-05-05 09:14:00 Hi, while reviewing the design of a 33/0.433 KV, 7500 KVA (3x2500 KVA transformers) substation, I am in a fix whether to opt for Automatic Voltage Regulators (AVR) as separate units or integrated On Load Tap Changer (OLTC) on the high tension side of the transformers. Kind
Generator Voltage Problem
2008-05-02 22:57:00 We are testing a three phases diesel engine generator and experiencing a problem of the increase of output voltages on each phase whenever an external load is applied. Without a load, its output voltage is well regulated at 208V phase to phase and 120V phase to neutral. However, when a load is appli
Radio Interference Voltage (RIV) Testing
2008-05-02 10:02:00 what is the test procedure for RIV(radio interference voltage ) in site at 440KV system?
Free Sample High Voltage or Glow from MVP Nutrition
2008-05-01 19:29:00 http://mvpnutrition.com/freesam-ple2.php -enter code: TE457
By: Free Stuff Times
High Voltage - The Power of Electricity
2008-05-01 12:29:00 Jacob s Ladder: 500kV Switch Opening 345kv Electrical Switch Faraday Cage Protects from 100,000 V High Voltage Electrical Wire Fire Download Video ...
By: ByREV Blog-u
690 Voltage Transformer
2008-04-28 14:23:00 i am working in power plant and i installed 11kv / 720volt transformer.transformner have two secondary winding each have 720 voltoutput.one winding is star connected and another is delta connected.power from both secondary fed to VFD panel .iwant to known why 720 volt is used in place of general L
Preferred Medium voltage bolt material
2008-04-27 14:47:00 What is the preferred material for bolts in medium voltage system at the point motor or generator leads terminate to the bus connection point? In the past I have come across different opinions but have seen that stainless steel tends to gall. I have recommended cadmium plated on a particular install
El próximo lunes comienza el rodaje de Crank 2 High Voltage
2008-04-22 02:17:00 Amy Smart y Jason Statham juntos nuevamente «Crank», una de las películas más adrenalinicas que tuve la suerte de ver, tendrá una secuela el próximo año llamada «Crank 2: High Voltage» y, por suerte, los protagonistas y los ... Link: Peliculas.info Tags: Amy, Smart, Jason, Statham, juntos, nuevamente «Crank»,, películas, adrenalinicas, tuve, suerte, ver,, tendrá, secuela, próximo, llamada, «Crank, ...
By: Bits de cine
Gear Review - Arai Quantum 2 Voltage Red
2008-04-21 20:10:00 I have been using my Z1R Blade helmet for a half a year now. I felt that the time had come for me to graduate and get a good upscale brand helmet like Arai or Shoei. Not that there was something wrong with the Blade. I will still keep it in case I ride with ...
Preferred Medium voltage bolt material
2008-04-21 17:51:00 What is the preferred bolt material for medium voltage 5kv-15kv applications?
High Voltage (Basic Basie, Vol. 2) (Audio CD)
2008-04-20 04:04:00 High Voltage (Basic Basie, Vol. 2) (Audio CD)By Basie, Count 4 utilised and new from $6.99 First tagged “jazz” by helen craig Customer tags: jazz vocal, jazz Technorati Tags: jazz vocal, ...
Measuring battery charging voltage
2008-04-19 16:12:00 I have a wind turbine with 3 phase ac output connected via a controller to a battery and I want to monitor the charging voltage and current against wind speed. I have datalogger and annemometer etc but I am confused about measuring the charging voltage. If I connect a voltmeter across the o/p
voltage drop
2008-04-18 19:19:00 anyone who r familiar with calculating the voltage drop ? i am refering to the British Standard (BS), particularly the section where the voltage drop table tabulates..in that section there are a few convention stating different voltage drop (mV/A/m). for example, for a copper cable at 25sqmm at PVC/
kVA Rating of 11/3.3kV Transformer With 6% Impedence Voltage
2008-04-15 12:51:00 I have a 1200hp,942kW, 2960rpm, 3.3kV, 177 FL amps, 3 phase, 50Hz, WYE connection motor with softstarter. LR at 100%volts,75 degree centigrade is 1050amps To run the above motor, what should be the kVA rating of 11/3.3kV transformer with 6% impedence voltage, + or - 2 x 2.5% volatge t
High voltage ?antivirus? halo protects your laptop, keeps you vigilant
2008-04-08 00:00:00 Here at Engadget HQ, we have a certain respect for tesla-based DIY endeavors. That being said, we still can't fathom who in their right mind would actually fling sparks around their laptop just to feel a little closer to that WoW raid. Nevertheless, the High voltage "antivirus" protection project claims ...
HIGH VOLTAGE “ANTIVIRUS†HALO PROTECTS YOUR LAPTOP, KEEPS YOU VIGILANT
2008-04-07 21:46:00 Filed under: Misc. Gadgets Here at Engadget HQ, we have a certain respect for tesla-based DIY endeavors. That being said, we still can't fathom who in their right mind would actually fling sparks around their laptop just to feel a little closer to that WoW raid. Nevertheless, the High voltage "antivirus" protection project claims to play nice with Macs or PCs and utilizes a ZVS flyback supply driving a 4-stage CW multiplier. According to the mad scientist who arranged this thing, the shot on the right was taken by a camera forced to hold its shutter open for ten seconds before capturing, and he even took a number of shots (check 'em all in the read link) to defuse the "Photoshopped!1one!" arguments. If you can't sense the fear in our fingertips, trust us, it's there. Read | Permalink | Email this | Comments
High Impedance Voltage Amplifier Designs
2008-04-07 06:35:00 Friends, This thread is created for high impedance voltage amplifier designs. Idea is to sense and amplify small voltage over high impedance source having small capacitor to dynamically hold charge. Assuming that source impedance is 1G Ohms || 100 pF giving time constant of about 0
Pure voltage...No amperage
2008-04-04 23:02:00 We found this youtube interesting.No amps, just Voltage...
By: Secret-Teachings
Sparks, Electricity, and High Voltage Fun
2008-04-01 00:00:00 Use an automotive ignition coil to produce high voltage sparks and arcs. Using a 555 timer, you can create pulses of electric sparks, emitting electrical currents which generate spectacular displays of electricity.
Planning For Low Voltage Garden Lighting
2008-03-30 18:54:00 With recent quality improvements in low voltage outdoor lighting system components it is now easier than ever to set up your own garden or walkway lighting system. With the right components and setup you can save by doing it yourself and still get a quality long lasting lighting system.You will need four basic components for the lighting setup; a transformer, the cables, the fixtures for the lamps and the lamps themselves. You can purchase the items separately but it is also very common to find kits available at your local hardware store that have all the items you need included.The transformer for these lighting systems converts standard 120 volt house current to a more manageable 12 to 22 volts. You will want to mount it in a safe out of the way location like a garage or tool shed that has a standard grounded 120 volt electrical outlet you can dedicate to the lighting system. Lighting transformers come in a variety of sizes and you will need one big enough to handle the number and...
By: How to Garden
Motor voltage & frequency
2008-03-30 07:29:00 Is it safe to connect a 380V, 60Hz ac motor to 415 V,50Hz ac supply. What is the effect on motor output due to it. If not safe, what is the remedy
Intel Unveils 'Low-Voltage' Server Processors
2008-03-25 22:01:00 Intel Unveils 'Low-Voltage' Server ProcessorsThe company is currently shipping more than 35 different server, desktop and notebook processors built with similar design specifications.http://www.infor-mationweek.com/hardware/showArt-icle.jhtml?a...
Cable ampacity and voltage drop
2008-03-17 19:37:00 good day to all, i need your help guys, we have airconditioning loads (496Amps) to be feed by 2-3Cx120mm2 + 70mm2 XLPE/PVC/SWA cables with a length of 200meters thru U/G duct bank. The breaker in the switchgear is 800A and the A/C's panelboard main breaker is 600A. i just want to ask if the size of
XFORMER SIZE, voltage drop
2008-03-15 16:40:00 I have run into a few pump motors the last few weeks. I have 240V 15hp pump, 3 phase, 200A. I need to be able to size the XFORMER, for this motor, plus a 2000sq ft house will be fed off this XFORMER, 200A, plus one more 100A panel for lighting their workshop/garage. When I calc the load for the
Can a low voltage garden light timer be repaired?
2008-03-15 15:03:00 I have several 88 W, 12 V transformers/timer from Malibu that stops working. They are used for operating garden lights. The clock/timer either doesn't rotate or cannot pass the on/off switch. Can these units be repaired? They cost around $ 35/unit, is it worth to repair it?
Non contact Voltage Presence Measuring for Appliance Modification
2008-03-14 13:17:00 So I have been wondering about non-contact measurement of voltage in AC wire. I want to know when my espresso machine is brewing so I can turn on a shot timer. I tried and tried looking around on-line, and eventually I realized to would faster to actual..글 ì „ì²´ë³´ê¸°
Danger! Danger! High Voltage Cake.
2008-03-13 14:47:00 A birthday cake with a kick! more info at synoptic.org via
By: about:blank
High Voltage
2008-03-09 07:00:00 Dear sir Pleas can help to sent me the costs of high voltage the following items 1-high voltage 11,6.6, 3.3 kv electric motors 2-SF6 high voltage circuit breakers 11,6.6,3.3 kv |
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