ELECTRICAL FAULT DESCRIPTION

Posted by adhi wahyudy on Friday, 12 February 2010

SPIKES
SPIKES are high frequency oscillatory variations from a steady state level generated when reactive loads are switched. In a properly operating electrical systems, spikes can be expected to reach +/- 250 volts for durations up to 70 us decaying slowly to a steady state voltage.
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TROUBLESHOOTING DIVERTER

Posted by adhi wahyudy on Thursday, 11 February 2010

I just want to share with my experience regarding diverter problem in my cogen project.
If you have some problem for the moving the diverter please kindly find explanation at below

1).The actuator cannot move In manual or automatic mode, the actuator cannot be moved or only in one direction. Cause : inside the pneumatic block have some moisture. (See page137 attached). Do this for problem only diverter movement.
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BASIC ELECTRICAL FORMULA

Posted by adhi wahyudy

I just want to shared this formula file to you all, hopeless this can help you to calculate / convert electrical value.This file in excel. Just fill the value you want and the result you can see immediately.
Please kindly see at below picture for sample :
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TEORI DASAR LISTRIK

Posted by adhi wahyudy


1. TAHANAN DARI PENGHANTAR LISTRIK
Semua bahan bagaimanapun murninya selalu mempunyai tahanan listrik, yang mana tahanan ini tergantung tahanan jenis ( ρ ) bahan itu sendiri.
Tahanan tersebut tergantung dari bahan; berbanding lurus dengan panjang dan berbanding terbalik dengan penampang penghantar tersebut.
Temperatur juga akan mempengaruhi besarnya tahanan. Baik atau buruknya tahanan suatu penghantar ditentukan oleh;

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PEMBAKUAN ISTILAH KELISTRIKAN

Posted by adhi wahyudy

Bahasa Inggris
Bahasa Indonesia


Absolute pressure             
Tekanan mutlak / absolut

Absolute air temperature         
Suhu udara mutlak / absolut

Acceptance procedure             
Prosedur penerimaan
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ELECTRICAL CONVERSION

Posted by adhi wahyudy

You may need to convert voltage, amperage and electrical specifications from equipment into KW, KVA and BTU information that can be used to calculate overall power and HVAC requirements. The following section addresses the process of taking basic electrical values and converting them into other types of electrical values.

The specification nameplates on most pieces of computer, radio or network equipment usually list electrical values. These values are usually expressed in volts, AMPS, kilovolt-AMPS (KVA), watts or some combination of all of the above.

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ELECTRICAL ANSI CODE

Posted by adhi wahyudy

12   ———  Overspeed (2 set points)
14   ———  Underspeed (2 set points)
21B ———  Underimpedance
24   ———   Overfluxing (V/Hz)
25   ———   Synch-check

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