Where can i buy the stator generator insulation?
2009-09-07 09:34:00 Dear All I need some of vendors that can supply material for stator generator insulation. Could you give us information about it? which one material that we need to re insulation stator generator? Thank you very much for your aids and participation Regards Rita
Motor Insulation for Megger Testing
2009-09-04 20:20:00 hi!.I'm a electrical eng'g student from Philippines.How many ohms is a good insulation when megger testing a motor with a megger tester range set at 1000V..?thanks..
Insulation for Industrial Dryers
2009-09-02 20:54:00 Is Insulation to the industrial dryers are advisable? We are using Rotary dryer in the plant of DAP for material drying. where excess radiation loss through dryer shell is absorbed. We decide to encounter this problem by means of partial insulation (where radiation loss is higher), by means o
Insulation Breakdown
2009-08-23 14:07:00 Has anybody come across insulation breakdown on newly installed FP200 Cable
Rotor Insulation IEEE 43
2009-07-29 21:21:00 I'm building a database of insulation rotor values in rotating machinery for a power plant, does anyone know if the IEEE 43-1974 applies either for stator and rotors? there's another guide?
Power Factor and Cable Insulation
2009-07-27 17:12:00 I would like to find out which cable insulation is most suitable for an installation in a high ambient temperature location?
400V sub-DB busbar insulation spacing
2009-07-23 04:28:00 We need to order a new sub-DB of 400V. Not sure what is the required space insulation between busbar phases. Is there any international standard for this requirement? What about those insulated busbar? The required spacing is much lower? Thanks.
Insulation level of Current transformer
2009-07-22 08:02:00 What is the insulation level of a current transformer in 11 KV system for earthed & unearthed system.
Cold Storage Insulation Panel
2009-07-02 18:20:00 We plan to build a cold storage 8 meters high. Should we use insulation panels with cam locks or panels with tongue and grooves. The cold room will have a -25 deg C temperature.
Thermal insulation
2009-06-14 15:21:00 Hi all, currently we are using calcium silicate for insulating steam pipes.Please suggest me the efficient insulating material than calcium silicate so as to reduce insulation thickness Steam temp: 350 deg
Insulation of Valves and Flanges in Hydrocarbon and Hot Oil Lines
2009-06-01 06:43:00 Dear All , In our refinery there are so many insulated lines with Hydrocarbon , hot oil lines service , now the question is whether these flanges of these services should be insulated or not . Operations fears that insulating these flanges will lead to leakage of hydrocarbons and contaminat
Ten Delta results to test insulation value
2009-05-24 07:40:00 Can anybody help me how to conclude the status of insulation from the ten delta results and can we predict the life of the equipment from this value. since the equipments installed in swithchyard are very costly it is not fiesable to change them just because of poor ten delta result i.e beyond 2%
Thermal / Acoustic Insulation
2009-05-20 09:48:00 At present we are using rockwool / fibre insulation to provide the necessary thermal protection in our waste heat recovery units but this requires a thickness of around 150mm to reduce the temp from 550 DegC to 60 DegC. We are looking for alternatives that will greatly reduce this thickness but it
Insulation Resistance Tester
2009-05-05 13:34:00 Is an insulation resistance tester not harmful to cables. Doesnt the high voltage affect the cable insulation.
how to calculate insulation resistance?
2009-05-05 08:24:00 A 50hz single core cable having 1cm diameter conductor inside a 2cm diameter sheath, is 10km long and operates at 6.6kv. The relative permitivity of the dielectric is 5 & the open circuit power factor of the cable is 0.1. Calculate 1. capacitance of the cable 2.Capacitive charging
Expanding Foam Insulation
2009-04-27 15:14:00 I'm doing research on expanding foam insulation for work. Does anyone know about the difference between open cell and closed cell foam insulation? What is the chemical makeup of the insulation? Also, does anyone know about the combustibility of this stuff? Test results would be great!
Insulation and Packaging Products Made With Mushrooms Roots From Ecovative
2009-04-18 06:13:00 Recently the co-founders of Ecovative Design, who live by the cradle-to-cradle philosophy, have invented two revolutionary new products from mushroom roots, ""Greensulate"&q-uot; and "Acorn". These two products could be alternative products for energy conservation and waste reduction. "Acorn" is a compostable packaging material and "Greensulate" is an organic insulation.
Insulation tester
2009-04-10 13:33:00 what is difference between AC motorized Insulation tester & DC indulation tester.
Aerogel Based Insulation Replacement
2009-04-01 01:10:00 The aerogel product (Pyrogel 3350) we are using has been discontinued so I am trying to source a replacement. We have one application at ~285C and another application at ~180C. The thermal conductivity of Pyrogel 3350 at 285C is ~26mW/m-K and at 180C is ~ 20mW/m-K. We have been using 3mm layers
HV Switchgear Insulation Resistance
2009-03-28 09:19:00 Hi, Can anyone help me in showing where do can I get the standard of Minimum Insulation resistance for HV Switchgear. When I work at the factory I used to use " Voltage rating of the measured equipment / 1000 + 1 MOhm" as the minimum insulation resistance of the equipment; now I work at HV Su
Temperature Rise for Class F Insulation
2009-03-24 13:44:00 Dear all i'd like to know What is the temp rise limit for class f insulation (induction motor)? Does this value change with ambient temperature?
XLPE Insulation
2009-03-10 20:17:00 I need to know about XLPE insullation. I am considering using 4/0 4/0 4/0 Triplex AWG RL XLPE Use 2 600V (UL) for underground from meter box to a farm shed for possibly 200 AMP service about 500 feet distance. Thanks, Warner Ranch
Optimum Thickness of Rock Wool Insulation
2009-03-05 19:07:00 what would be the optimum thickness of insulation for high temperature bare steam pipeline.What would be the conductivity and density for that thickness which make the pipe touchable.
Insulation Voltage for Relay
2009-03-05 16:47:00 On the catalogue of a relay, it says "Rated insulation voltage (Ui) V 250 (IEC), 300 (UL, CSA)" it doesnt say its AC or DC. it also says "Dielectric strength (rms voltage) Between coil and contact a V 2500 Between poles a V 2500 Between contacts
data of trafo insulation's test
2009-03-04 21:55:00 for the insulation parameter in trafo, such as Furfural content, Oil tan delta, water content,acidity, breakdown voltage, IFT,CO2 content, and based on Total Combustible Gas (TCG) condition. We describe the conditon level with code 1 (poor), 6 (fair), and 9(good). And to evaluate the level for a g
Parameters for Trafo Electrical Insulation
2009-03-03 21:53:00 There are many parameter influence the condition assesment of Trafo Insulation. Here I make them become several, they are Furfural content, Oil tan delta, water content,acidity, breakdown voltage, IFT,CO2 content, and based on Total Combustible Gas (TCG) condition. Can somebody suggest me
thermal Insulation
2009-02-25 11:49:00 According to the ASTM std -C591,the temprature limits of the polyisocyanurate (PIR) is '-180°C to 150°C' and why is not suitable above ambient temprature insulation (hot insulation)?
Polyisocyanurate (PIR) Insulation
2009-02-24 13:00:00 According to ASTM std C591 ,PIR temprature limits is "-180°C to 150°C" and why is not suitable above ambient temprature?
Insulation Power Factor at Nominal Hertz (Hz)
2009-02-20 01:00:00 Insulation power factor is usually used to test moisture/contaminants in the insulation. If the IPF test at nominal hz is done, would it show or imply a moisture/contamination in the insulation? Assume the result just barely passed at 0.5%pf, will this show much information?
Transformer Insulation Resistances
2009-02-11 13:33:00 Hello, Can you help me please.. I am testing a 1250 KVA transformer, how many M ohms must be the insulation resistance of this transformer? May you send me a data sheet containing the insulation tests? best redards..
Insulation Breakdown in 3phase squairrel cage induction motor
2009-02-09 13:19:00 Hi I m working with a manufacturing company and it is the problem there rthat for every 10 motors we manufacture 1 motor has insulation breakdown. Can u suggest the possible causes and remedies.
Insulation thickness
2009-02-08 08:33:00 I want to calculate appropriate insulation thickness.What will be the formulae.
Optimum thickness of insulation
2009-02-02 09:58:00 What would be the optimum thickness of insulation for the steam pipe insulation (rock wool) of surface temperature about 350 C for the conservation of energy.I need outer surface to be touchable.Different softwares give a thickness about 4 to 5 inches which is difficult to apply and very costly.
MotherCell Insulation Idea
2009-01-27 16:51:00 How about create like an artificial insulation in vitro? Let me explain the idea! The thing will be to have for example a good animal insulation skins cells and reproduce it commercially in vitro in order to use it for buildings insulator material which will be of a superior insulation quality f
Transformer insulation resistance
2008-12-28 12:57:00 Can some body tell me what could be the possible reason of low insulation resistance of power transformer. Is it Oil, the dielectric strength of oil is 50kV but the water content in the oil are approx 30ppm. or is it due to winding problem.
what is the difference between steam tracing ,jacketing,insulation
2008-12-15 10:02:00 what is the difference between steam tracing ,jacketing,insulation
what is the difference between steam tracing ,jacketing,insulation
2008-12-15 09:56:00 what is the difference between steam tracing ,jacketing,insulation ple reply any one as early as possible.
Accoustic insulation
2008-11-29 09:16:00 I appreciate if someone can explain the accoustic insulation specification selection and application methods for the party rooms and home theatre as well as the agencies who can study and execute the order.
insulation test generator winding
2008-11-22 19:51:00 what is the regulation that make us make insulation test at 500V d.c or 1000V d.c?
Insulation for Chilled Water Lines
2008-11-08 13:38:00 What is the best option for insulation of chilled water lines which have longer life even in humid environment.
insulation efficiency
2008-10-19 11:17:00 suppose there is a line to which steam is entered in temperature T and pressure P. the lenght of line is L and there are some branches connected to the header. is there any software or method to check the efficiency of insulation in this line. in better expression I want to enter the inlet and outle
Insulation Test Problem
2008-10-14 17:11:00 After isolating one of our machines from the main switch room, then from the machine's isolator, a pre voltage and current check was done on the isolator line side before insulation test could be done on the main supply cable. The results are listed below as measured with a multimeter and clamp mete
Start-up Ecovative Design Revolutionizes Insulation
2008-10-13 06:24:00 Ecovative Design has come up with a bio-degradeable solution to insulation called Greensulate and recently won $750,000 in an international competition to reduce CO2 with a new product.
vaulted ceiling insulation configuration
2008-10-10 04:33:00 I am replacing the roof on my house and will take the opportunity to improve the insulation. The cathedral roof is constructed of 2 x 8 rafters on 12" centers strapped with 1 x 4 on 8" centers. The roofing is 18" resawn shakes with 8" exposure on a 1:4 slope. The interior is finished with 1 x 4 t
Cable Insulation
2008-10-02 14:44:00 How much is the diffference in insulation for earthed and unearthed cables? why does an earthed system require less insulation? Why do people not follow earthing system as mandatory?
Insulation Cable
2008-09-24 18:56:00 we need cables with radiation cross linked, flame retard, polyolefin modified insulation to rockbestos, and such provider sent us cables with insulation XLPE, XLPE insulation is same to request insulation or has some diferences? Which is the activation energy for both cables?
cable insulation test
2008-09-17 08:35:00 hi, can you explain please how to do cable insulation test low voltage (LV)
Cutting Insulation on a Production Line
2008-08-31 09:51:00 I have recently been asked to look at a line which glues the tar and aluminium foil sarking, to 75mm thick glass fibre batt insulation, the final product is about 1.2m wide. It is cut to length and rolled up before being placed in a bag. Currently the finished combination is manually cut fro |
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