GFAL-A     Analyzer Unit                      
                                                                   GFAL-B     Tracking Unit                                                  
                                                                   GFAL-ST    Site Training (optional)

                                Locating DC Ground Faults

    Abstract
    Ground faults on battery operate DC Multi feeder Distribution System are very difficult to find without proper instrumentation and training.

    Samco Engineering has design a new microprocessor control instrument with a single purpose “to analyze and locate even the most
    difficult DC ground faults on "DC Multi feeder Distribution System”,  for the safeguard of the DC system integrity.

    The DC Ground Fault Analyzer and Locator instrument (GFAL-A/B) make use of a very small interrupted and synchronize DC
    signal to analyze and locate DC ground faults on multi feeder distribution system on power plants, refineries and switchyards. 

    Remark from one of our nuclear customer, "We have a split 250VDC system with high stray capacitance. We have had no
    luck previously locating grounds on the common bus. We have tried the Bender, Biddle, DC Scout and Ground Hog  equipment
    with no success. We were able to locate a positive ground on Unit One, and an intermittent common ground on Unit Two
    using the GFAL-A/B equipment. Prior to this, we were living with the grounds."
 
gfal-a-b

                                                                         GFAL-A and GFAL-B
                 




    


                              Links to the:

                            
                              analyzer a    GFAL -A                              

                              gfal-b    GFAL-B                                    

                              training    TRAINING CLASS                         
         
                              manual   USER'S MANUAL  

                                              Equipment and Method highlights

           Ground Fault Analyzer Instrument, Model : GFAL-A 

    *     Create a tracing signal to locate the DC ground faults up to the point of failure

    *    Functionally test the DC alarm unit operation

    *    Test the DC Distribution System for spike faults and AC contamination 

    *    Help to find the value of the fault resistance from each polarity with respect to site ground. 

          See the User's Manual Section 8.0 – GFAL- A, Appendix B.

    *    Set up the basis for a ground fault predictive maintenance program

        Ground Fault Tracking Instrument, Model: GFAL-B 

    *    Will trace and locate the DC ground faults on DC multi-feeder distribution system, up to the point of failure without service
          interruption

    *    Detect and process the signal produce by the interrupter with a magnetic sensor (unique design) that wrap around the conductors.

    *    Never have to open a circuit or a breaker to troubleshoot a DC distribution system

    *    Set up the basis for a ground fault predictive maintenance program

       Training Lecture "Fundamentals of DC Ground Fault" : GFAL-ST

    *    "Correct and incorrect" ground fault Indication and Location methods and instruments.

    *    How to identify and locate DC ground faults on DC multi-feeder distribution systems

    *    At the site DC ground fault training and practical applications 

    *    User's Manual a Power Point Presentation and 7 Application Notes for reinforce site or self training

          Partial customers list                                        International customers from:

         *     Plant Bowen 3,540 MW (GA)                                             *    South Korea
         *     Plant Scherer 3,564 MW (GA)                                            *    Saudi Arabia
         *     Ray Olinger Plant  420 MW (TX)                                       *    Pakistan
         *     City of Anaheim (250 KV) Substation (CA)                      *   Taiwan
         *     El Segundo GS 684 MW (CA)                                            *    Indonesia
         *     Exxon Mobil Refinery (CA)                                                *    Puerto Rico
         *    Callaway Nuclear Plant (MO)    
         *    Comanche Peak Nuclear Plant (TX)
         *     Wolf Creek Nuclear Plant (KS)
         *     Brunswick Nuclear Plant (NC)
         *     Diablo Canyon Nuclear Plant (CA)
         *     Palo Verde Nuclear Plant (AZ)
         *     Hatch Nuclear Plant (GA)
         *    Vogtle Nuclear Plant (GA)
         *    Three Mile Island Nuclear Plant (PA)



                                                          Carrying case

                                                                                  Carrying Case
                                                      Exterior Dimensions: 13 in. H x 17-1/2 in. W x 13 in. D
 

                                    Contact us at:
            Samco Engineering
            Fountain Valley, CA 92708 
            E-mail: samcoeng@aol.com
            Attention: Engineering Department
            Phone: (714) 235 - 5901
            If you have questions about DC ground faults, please give us a call or write to us an e-mail.
                                                                                                                                                                                                 2010