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Hi, I try to measure a GRE pipe with my multi meter. I am expected to get some mega ohm reading. But i getting totally open connection. (insulated) that is require for GRE pipe to be conductive in hazardous zone. Vendor also claim their pipe is conductive type. But dont get the physical ohm...

Hi Guys, I have 3 phase 440V AC 60 Hz as incoming. is LV IT system 3 wiere without neutral distribution. How can i get 2 phase distribution as 220V AC (without N distribution)? Can i just tap L1 and L2? Some people tell me yes Some say i need Isolation transformer ... thanks for clearing my...

Hi friend, 1. In 3 phase IT system Insulation monitoring device and earth leakage device service the same protection? 2. If my 3 phase IT System upstream come with IMD. My down stream still require a ELR? THanks for helping..

Hi Friend, Client power system is IT system for 220V AC utilities supply they put 2 phase supply in 2 wire L - L. So my instrument, lighting, everything is single phase L N E connection. So can i direct wire supply L - L to L - N terminal? or i need a transformer for between the supply and...

Hi friend, I am not electrical person... I am confusing about some data in motor datasheet. We have a pump which have BHP = 344 kW. And Siemens induction motor will drive by 4160V 60Hz. In vendor datasheet it show Nameplate power "min 380 @ 45 degC kW. and in other line of datasheet it show...

Hi Guys, I encounter some of the plant/offshore engineering design for 3phase LV 480V motor earth terminal inside enclosure (terminal box) is connect directly to local ground (Structure). Instead to go back to main switchboard or MCC. Frame earth also to local earth (Structure). But when I...

Hi Guys, I am confuse while checking my contractor drawing. Motor FLA = 47A MCB 3P = 80A (Installed outdoor at 55degC inside enclosure, derating to 72A) Power rating = 480V 3 phase 60Hz Cable Run around 50 meter Cable selected 35 mm2 (Current capacity in catalog 136 A) While I doing the...

Hi Guys, I looking for HP Pilot operate pressure reduce valve. o Operating Pressure: 0-5000 psi o Operated Flow rate: 20.9 m3/hr. Unfortunately, all supplier return with their PRV only can work for 500psi... Did you guys encounter any HP PRV? Myself actually never bought PRV working in so...

Hi Sir, Did we have any international guideline or rule of thumb to determine the motor shall power by LV or MV. I am struggle to make decision. I have a project motor size is 200HP. And LV voltage is 380V 3phase 50Hz. I am thinking to go for MV system 6.6kV... Any standard guide telling how...

Hi Sir, I have plant provide source 480V,4wire,3phase,60Hz,TP&N Neutral solid to earth. I need to provide a distribution board distribute power to 3 phase motor A and B and one 3 phase heater I have few question on distribution board design. 1. TP&N neutral solid to earth incoming is mean my...

Hi Guys, all motor design suitable operate by different starter? I mean, we do not need to consider starter type example like DOL, Soft Starter and VFD when we purchase a motor? We can decide on starter type later.. BR Michael

Hi Guys, I am doubt gold plated C-276 on transmitter sensor diaphragm requirement for sour water stripper application.. does this really require? My understand Hydrogren permeation only happen for service on hydrogen gas on high temp. and high pressure. According to my process sour stripper...

Hi Guys, I am doubt gold plated C-276 on transmitter sensor diaphragm requirement for sour water stripper application.. does this really require? My understand Hydrogren permeation only happen for service on hydrogen gas on high temp. and high pressure. According to my process sour stripper...

Hi all... I was confuse in pipe fitting. As what i understand when we purchase pipe schedule are to determind the thickness. how about when we purchase pipe fitting LBS are also a standard to thickness???? anyone have a table provide for me to refer?? i am going to buy a nipple with 3000...

Helo. I have a project using a lot of diaphragm seal DP tx to measure level. But i have a lot of query regarding this. Because i nvr do it before. Any experience guy please help to advise me. Thanks 1. Anyone know why usually diaphragm seal transmitter did not have small range like -100 mbar to...

if my instrument calibration range for level only -32.6 mabr to - 10.7 mbar. I choose DP transmitter A, instrument range -1000 to 1000 mbar and span are 5 to 1000 mbar. and DP transmitter B, instrument range -100 to 100 mbar and span are 1-100 mbar. If i choosing A. is it will effect the...

I have one thermocouple K-type signal need to travel along 100 m to the transmitter. Are this will effect my accuracy of reading? thanks.

Hi all, I always confuse when chosing a flange or thermowell flange. I always see piping like to use ASME standard and flange always refer to ANSI standard... Does it mean ANSi and ASME are the same? so which mean 1" 150lbs ANSI and ASME are same in term of dimension and mechanical properties...