ERICO EST401 ERITECH Clamp-on Ground Resistance Tester User Manual
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Table Of Contents
Limited Warranty .......................................................................................................................
Warranty Repairs .......................................................................................................................
International Electrical Symbols................................................................................................2
Receiving Your Shipment .........................................................................................................3
Packaging................................................................................................................................3
Important Information - Proper Operation ...............................................................................3
Description ..............................................................................................................................4
Product Construction.........................................................................................................4
Jaw Design ........................................................................................................................4
Body Design ......................................................................................................................4
Electrical Specifications ............................................................................................................5
Ground Resistance.............................................................................................................5
Ground or Leakage Current...............................................................................................5
Mechanical Specifications ........................................................................................................6
Safety Specifications ................................................................................................................6
EST401 Controls......................................................................................................................7
Digital Display Features............................................................................................................8
Function Controls ....................................................................................................................9
On/Off...............................................................................................................................9
Auto-Off ...........................................................................................................................9
Hold ................................................................................................................................10
Beeper Disable ................................................................................................................10
Resistance .......................................................................................................................11
Current ...........................................................................................................................12
Function Access Summary .....................................................................................................12
Principle of Operation............................................................................................................13
Field Applications ..................................................................................................................14
Pole Ground Rods ...........................................................................................................14
Service Entrance or Meter................................................................................................15
Pad Mounted Transformer ...............................................................................................16
Transmission Towers ........................................................................................................17
Central Office Locations ..................................................................................................17
Service Panel ...................................................................................................................18
Phone Pedestal ................................................................................................................19
Above Telephone Space...................................................................................................20
General Measurement Notes ...........................................................................................20
Quick Reference Card............................................................................................................21
Calibration Check Loop .........................................................................................................21
Commonly Asked Questions for Clamp-on Ground Resistance Measurements.......................22
Maintenance .........................................................................................................................23
Battery Replacement Procedure .............................................................................................23
Troubleshooting.....................................................................................................................24
Repair and Calibration ...........................................................................................................24
Technical and Sales Assistance ...............................................................................................25
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