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  • Users: HienN
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  1. HienN

    PT100 VS TC

    Dear friends, If I want to measure the signal from PT100 and PT50 sensors, how is the measuring unit? It will be measured by Calibrator. And for thermal couple? Is its signal in Volt? Regards, HienN
  2. HienN

    Sizing transformer

    Hi all, Today, I bring a new question that hopefully it is worth for a while thinking. We got a new project of a Cryogenic plant. This is also my very first big project. The electrical equipments specification is as was following: Air compressor (02 sets): 6.6kV_2056kW_Reactor starting Recycle...
  3. HienN

    Aluminum Conductor Steel Reinforced (ACSR)

    Dear all, To get an assumption with voltage drop along the overhead power line, anybody suggests me the Reactance of this ACSR cable (240/39mm2). Or any links, catalog, or documentation is appreciated. Regards, Hien
  4. HienN

    TCC curve

    Dear all, I have 01 other question regarding to the TCC plotting. For example, we have 01 6.6kV motor from Toshiba, then 01 set of Mitsubishi fuse, and 01 Mitsubishi VCB (for motor, and motor control center). Then 01 set of Merlin Gerin fuse (for 22/6.6kV transformer outgoing) Transformer...
  5. HienN

    Switchgear information

    Dear all, In one switchgear manual that written: 1. Out-of-phase current switching capability 2. Out-of-phase Synchronizing What do they mean? Does it imply that the switchgear is used for Power Generator? If I turn on the switchgear with out-of-phase current? 3.What will happen to the...
  6. HienN

    "Neutral" Transformer sizing

    Dear all, We have come across with below situation. The power system is available with 3 wire/22kV. Now, we want to use the neutral wire for the using area at 22kV. Due to so long distance and mountaneous area. We force to use one another transformer 22/0.4kV_Wye/Delta connected to the...
  7. HienN

    O2 Backup system

    Hi all, We got a new project that we will supply GO2 for a Steel factory. Our factory would be a PSA with the outlet pressure around 25barg. Customer will use a regulator to regulate the pressure down to 15barg for their application. Thing is, how is the O2 backup system would be to work at...
  8. HienN

    Increasing gas volume

    Dear all, According to customer request, we need to increase our production volume of GN (1800Nm3/h) up to (2500Nm3/h)in an on-site plant. This plant was designed to work with the 1800Nm3/h flow. How we can modify the system to adapt this new change? We have 02 back-up tanks...
  9. HienN

    Transformer impedance

    Dear all, To calculate short-cisruit current, we collected transformer impedance from Power company. But the one we got was from 3-winding tranformer (110kV/35kV/22kV) so it was availabe with 3 impedance voltages (P_S side/ P_T side/ and S-T side). Power is supplied to 110kV and derived from...

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