Locating DC Ground Faults

                                                                   GFAL-A         Analyzer Unit                      
                                                                   GFAL-B         Tracking Unit        
  Tracking Sensor                          
  Training CD 

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

    Samco Engineering has design a 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 and GFAL-B


Links to the:

                         analyzer a    GFAL -A  

                        GFAL-B    GFAL-B                                    

                          LMSA  Tracking Sensor

                          manual   USER'S  MANUAL  

                                              Equipment and Method highlights

               GFAL-A: Ground Fault Analyzer Instrument (Interrupter unit)  

    *     Create a track 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

              GFAL-B: Ground Fault Tracker Instrument (tracking unit)

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

    *    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

                 MSA: Magnetic Sensor Assembly (tracking sensor)

    *    The design of the sensor probe is unique, there are available in 2 sizes  

                GFAL-CD: Training  CD "Fundamentals of DC Ground Fault"

    *    "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

    *    CD with the User's Manual a Power Point Presentation and 8 Application Notes for support self training

                Partial customers list                                       

         *     Plant Bowen 3,540 MW (GA)                                            
         *     Plant Scherer 3,564 MW (GA)     
*     Darlington Nuclear Plant 3,500 MW (Ontario Canada)                        
         *     Ray Olinger Plant  420 MW (TX)                                     

         *     City of Anaheim (250 KV) Substation (CA)                     

         *     El Segundo GS 684 MW (CA)                                           

*     Exxon Mobil Refinery (CA)                                           
*     Callaway Nuclear Plant (MO)                                        
*     Comanche Peak Nuclear Plant (TX)                                
*     Three Mile Island Nuclear Plant (PA)                            
         *     Brunswick Nuclear Plant (NC)                                          
*     Diablo Canyon Nuclear Plant (CA)
*     Palo Verde Nuclear Plant (AZ)
*     Hatch Nuclear Plant (GA)
*     Paradise Power Plant, TVA Gov (KY)
*     Bonneville Power Administration, Gov (OR) Substations
*     Arnold Airforce Base, Gov (TN)
*     The Dalles Dam (US Army Corps of  Engineers)

                 International customers from:
         *     South Korea
Saudi Arabia
*     Philippines
   *     Canada
    Puerto Rico                                              
*     Slovenia                                           
*     Vietnam                                
*     Australia                               
         *     England       

           Carrying Case
                                                      Exterior Dimensions: 17 in. H x 14 in. W x 12 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.
We are an USA manufacture