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GROUNDING 101
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GROUNDING 101
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Protect Equipment from Fault Currents
WHY DO WE GROUND? SAFETY Protect People Protect Equipment from Fault Currents
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Electricity will always follow the path of least resistance to ground.
WHY SHOULD WE GROUND? Electricity will always follow the path of least resistance to ground. Proper circuit grounding will keep electricity from using your body to get to ground Grounded Circuit Requirements: Path is continuous and permanent Ample capacity Low Resistance Circuit parts are bonded together
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WHAT DO WE GAIN? Provides personnel safety - #1 priority Provides a stable signal reference for instrument accuracy Controls Radio Frequency emissions & Electromagnetic Interferences (EMI’s) Provides a discharge path for short circuits and lightning strikes
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LIGHTNING PROTECTION LIGHTNING FACTS
Packs between 35,000 and 40,000 amperes Generates temperatures as high as 50,000 C Travels as far as 40 miles Strikes somewhere on the earth every second Kills 100 people each year in the U.S.A. Destroys millions of dollars in property and equipment
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STATIC DISCHARGE THE UNWANTED SPARK
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Example: TEL-COM CELL SITE
Grounding Locations Example: TEL-COM CELL SITE
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BURNDY HAS THREE TYPES OF GROUNDING PRODUCTS
MECHANICAL COMPRESSION EXOTHERMIC (weld)
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MECHANICAL
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WHAT IS A MECHANICAL CONNECTOR?
Makes a secure connection using bolts or other hardware to bind conductors in place. Range Taking No special tooling Inexpensive Removable
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WHAT ARE THE MOST COMMON CONNECTORS?
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BUS BAR / FLAT BAR CONNECTOR CATEGORIES GB GZ GBM
Cable to bar with separator Cable to bar loop Cable directly to bar
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BUS BAR / FLAT BAR CONNECTOR CATEGORIES GL QGFL GCM GC
Two parallel cables / tap Eye in basket GCM GC Two Cables directly to bar Two cable to bar with separator
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CONNECTOR CATEGORIES BUS BAR / FLAT BAR KC KPB GKA Servit post
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FENCE POST, PIPE & TUBING
CONNECTOR CATEGORIES FENCE POST, PIPE & TUBING GK GAR Three cable parallel GP Cable to rod GD Two cable Perpendicular Two cable parallel
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FENCE POST, PIPE & TUBING
CONNECTOR CATEGORIES FENCE POST, PIPE & TUBING GAR-TC GG Cable at degrees Cable or braid to rod KC Servit post
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FENCE POST, PIPE & TUBING
CONNECTOR CATEGORIES FENCE POST, PIPE & TUBING Lower cost clamps GC-A Duel rated pipe clamps
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GROUND RODS / REBAR CONNECTOR CATEGORIES GRC GK GP GAR
Ground Rod Clamp GAR Three cable parallel Two cable perpendicular Cable to rod
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STATIC GROUND CONNECTOR CATEGORIES GIE GRF GP-G1
Vehicle or temporary ground Raised flooring Raised flooring
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CABLE & BRAID CONNECTOR CATEGORIES Braid GG GX KA Spans movable areas
Cable or braid to rod GX KA Cross connection Tap to run
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TRANSFORMER RAIL & BEAM CONNECTOR CATEGORIES KC QGFL J&RGC GA-H
Servit post Eye in basket J&RGC GA-H Cable to H beam or tube
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HIGHLIGHTS: SPLIT BOLTS
KS25 AVAILABLE FROM #2 TO 500 kcmil UL Listed for direct burial
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HIGHLIGHTS: Parts of a Split Bolt
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HIGHLIGHTS: Dual Rated Split Bolts
Used for any combination of copper and aluminum conductors.
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JOINING COPPER AND ALUMINUM
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RAISED FOOR GROUNDING RAISED FLOOR GROUND GRIDS
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GRF CLAMP ON RAISED FLOOR
Can be used on round or square pedestals Accommodates one or two grounding wires
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GP-G1 / GP-RT FOR RAISED FLOOR
Epoxy paint penetrating Can be used on round or square pedestals Accommodates one or two grounding wires
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QUESTION: ANSWER: WHEN IS A MECHANICAL CONNECTOR NOT ACCEPTABLE?
When a permanent connection is called out, or When connection is exposed to severe conditions such as extreme vibration
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MECHANICAL QUESTIONS?
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BURNDYWELD
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BURNDYWELD USES AN EXOTHERMIC PROCESS TO JOIN COPPER
PROVIDES A SOLID COPPER IRREVERSIBLE BOND WILL NOT LOOSEN OR CORRODE AT THE WELD
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EXOTHERMIC PROCESS The exothermic process is a simple, efficient method of welding copper to copper or copper to steel. This process uses a high temperature reaction of powdered copper oxide and aluminum. Reaction takes place in a graphite mold. Mold will last for 50 or more welds with proper care. This system is very field friendly, since it is light and portable and requires no outside power.
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THE SEQUENCE OF STEPS Open mold using handle clamp, and insert the conductors as desired Insert steel disc into the mold cavity Pour powdered metal into the mold cavity Close the lid Tap powder container to add the starting powder to ignition pocket Use flint device to ignite Brush and remove mold MOLD
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SIX STEPS FOR A PERFECT BURNDYWELD
2. 1. 3. 4. 6. 5.
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OVER 57 DIFFERENT MOLDS CABLE TO CABLE WELD TO REBAR
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MOUNT TO FLAT OR ROUND SURFACE
MOLDS MOUNT TO FLAT OR ROUND SURFACE
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SINGLE SHOTS PROVIDES THE SAME WELD RESULT IN A COST EFFECTIVE, ONE TIME USE PACKAGE
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WELD QUALITY What do you look for?
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WELD QUALITY Many factors contribute to the weld success
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HOW DO YOU TEST THE INTEGRITY OF A WELD IN THE FIELD?
WELD INSPECTION HOW DO YOU TEST THE INTEGRITY OF A WELD IN THE FIELD?
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COMMON PROBLEMS WITH EXOTHERMIC WELDING
Moisture Worn molds Unclean conductors Unclean mold Mistakes made in welding process
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ANY QUESTIONS ON BURNDYWELD?
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COMPRESSION
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COMPRESSION THEORY CREATION OF A HOMOGENEOUS MASS
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HY-GROUND SYSTEM
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COMPRESSION Range Taking Permanent Safe to install Quick and Easy
BURNDY HAS DEVELOPED AN IRREVERSIBLE COMPRESSION GROUND SYSTEM WHICH MEETS THE STRINGENT SAFETY AND PREFORMANCE REQUIREMENTS UL AND IEEE. CONNECTORS EMPLOY WELL PROVEN DESIGN PRINCIPLES AND TECHNOLOGY THAT HAVE BEEN IN EXISTENCE FOR OVER 60 YEARS.
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COMMON APPLICATIONS Where HY-GROUND is used
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GRID LAY OUT
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COMPONENTS OF HY-GROUND
WHAT’S NEEDED Proper Connector Correct Crimping Tool Specified Die
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CONNECTORS IRREVERSIBLE CONNECTION RATED FOR DIRECT BURIAL
MANY COMPONENTS AVAILABLE
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MEETS REQUIREMENTS UNDERWRITERS LAB TESTS NATIONAL ELECTRICAL CODE
IEEE 837 REQUIREMENTS UL96 LISTED FOR LIGHTNING PROTECTION CANADA STANDARDS ASSOCIATION APPROVED FOR DIRECT BURIAL
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UL LISTINGS Rigorous testing in the Burndy UL facilities ensures all product exceed standards.
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SUPERIOR CONNECTION PRE-FILLED WITH PENETROX OXIDE-INHIBITOR
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PENETROX E FILLED Air Gaps SHOWS VERY FEW CONTACT POINTS
Penetrox Fills The Gaps For Better Contact
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EASY TO INSPECT DIE INDEX EMBOSSMENT.
U-997 DIE INDEX EMBOSSMENT. Match embossed number to the number listed the on connector.
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INSTALLS IN ANY ENVIRONMENT
Installs In Wet Environments
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COMMON TYPES - HY-GROUND
YGLR-C Ground rod to grid YGHC-C Figure C YGL-C Cross connection YGHP-C Figure 6
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COMMON TYPES - HY-GROUND
YGHP-C Ground rod or tap Wire third hand H-Tap Splice or tap YGHR-C Figure 8 YGIB Crimp to structure
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COMMON TYPES - HY-GROUND
YGHS HGS Splice- heavy duty / standard YGF Grounding plate YGHA Hylug GSTUD-HY Versitail weld on
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FINDING THE PROPER CONNECTOR
YGHC-C
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FINDING THE PROPER CONNECTOR
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HY-GROUND CRIMPING TOOLS
Y750HS PAT750XP 18V PATRIOT 18VOLT Y46 HY-PRESS REMOTE HEAD
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FINDING THE PROPER DIE C U-C O U-O Installation Data Listed in Catalog
INDEX NUMBER Y750/Y35 Y39 HYPRESS 1 Y45 2 Y46 OF CRIMPS C U-C O U-O Installation Data Listed in Catalog
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ANY QUESTIONS ON COMPRESSION?
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WHERE DO YOU USE THE THREE TYPES OF GROUNDING PRODUCTS?
MECHANICAL COMPRESSION EXOTHERMIC (weld)
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CONNECTION APPLICATIONS
TEL-COM TOWER
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CONNECTION APPLICATIONS
CENTRAL OFFICE SITE
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ALWAYS KNOW THE SIZE AND TYPE OF WIRE YOU ARE CRIMPING
DIFFERENT WIRE TYPES ALWAYS KNOW THE SIZE AND TYPE OF WIRE YOU ARE CRIMPING
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WIRE GAGE KEEP A WIRE MIKE HANDY FOR WIRE IDENTIFICATION
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USE PENETROX-E OXIDE INHIBITOR ON COPPER CONNECTIONS
AVOID CORROSION USE PENETROX-E OXIDE INHIBITOR ON COPPER CONNECTIONS
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THANKS FOR CONSIDERING BURNDY PRODUCTS
PLEASE CONTACT US IF YOU HAVE ANY QUESTIONS OR PRODUCT NEEDS. TECHNICAL SERVICE (800) NEVER LET LIFE BE A SHOCK TO YOU!
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