Industrial power resistors, dynamic braking, load banks, low resistance grounding, high resistance, grounding, harmonic filters, motor controls, resistor element types
High Resistance Grounding Comparison Chart
Standard Practices For Industrial Plants

Voltage
600 volts and lower
2.4 to 35 kv

Grounding Method
Solid Grounding & High-Resistance
Grounding
Low Resistance Grounding

NOTE: A recent trend on 600-volt and lower systems has been to use high resistance grounding with all the inherent advantages it has to offer.


Comparative Benchmarks for Various Grounding Methods
  Methods of Grounding
Characteristics Ungrounded Solid Grounded Low Resistance High Resistance

Immunity to transient over-voltages

Worst

Good

Good

Best

Increase in voltage stress under line-to-ground fault conditions

Poor

Best

Good

Poor

Equipment protected against arc fault damage

Worst

Poor

Better

Best

Safety to personal

Worst

Better

Good

Best

Service reliability

Worst

Good

Better

Best

Maintenance cost

Worst

Good

Better

Best

Continued production after first ground fault

Better

Poor

Poor

Best

Ease of locating first ground fault

Worst

Good

Better

Best

Permits designer to coordinate protective devises

Not Possible

Good

Better

Best

Ground fault protection can be added easily

Worst

Good

Better

Best

Two voltage levels on the same system

Not Possible

Best

Not Possible

Not Possible

Reduction in frequency of faults

Worst

Better

Good

Best

First high ground fault current flows over grounding circuit

Best

Worst

Good

Better

Potential flashover to ground

Poor

Worst

Good

Best



Video Tutorial
High Resistance Grounding HR103-08

High Resistance Grounding Tutorial with Narration

Post Glover's High Resistance Grounding video tutorial with narration delivers an in-depth description of the uses and benefits of high resistance grounding.


More Information
  High_Resistance_Grounding-IEEE 2.92 MB

 High Resistance Grounding

"High-Resistance Grounding" by Baldwin Bridger, Jr.- Senior Member IEEE, IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, January/ February 1983
  HR003-05_HRG Application_Guide 335 KB

Ground Fault Protection

Ground Fault Protection on Ungrounded and High Resistance Grounded Systems- Application Guide
   
  HRG_Marathon_Oil_Case_Study 817 KB

Marathon Oil Cast Study on High Resistance Grounding

"High Resistance Grounding- Case Study: Marathon Oil Company" by Jill Revolt- Segment Marketing Manager and Dave Shipp- Advisory Engineer, PQ CONNECTION, Summer 1999
  HR002-05_HRG_Conversion_Guide 3.87 MB

Ground Fault Protection

Ground Fault Protection Technical Guide- Converting Ungrounded Systems to High Resistance Grounding
   
 HG105-10_PulserPlus.Net Manual 2.53 MB

PulserPlus.Net Instruction Manual

PulserPlus.Net High Resistance Grounding System- Instruction Manual
  High_Resistance_Grounding_Tech_Paper 1.3 MB

High Resistance Grounding Tech Paper

"High-Resistance Grounding of 2400-Volt Delta Systems with Ground-Fault Alarm and Traceable Signal to Fault" by Francis K. Fox- General Electric Company, Howard J. Grotts- Tidewater Oil Company and Clyde H. Tipton- Standard Oil Company of California, IEEE TRANSACTIONS ON INDUSTRY & GENERAL APPLICATIONS, September/ October 1965
   
  HR001-05_High_Resistance_Grounding 2.28 MB

High Resistance Grounding

High Resistance Grounding Brochure- Information on Grounding, Ground Faults and High Resistance Grounding
  HR203-10_OEM_Kit 337 KB

PulserPlus.Net OEM Kit

High Resistance Grounding OEM Kit- Information on Features, Benefits, Operation and Construction of the PulserPlus.Net High Resistance Grounding unit
   

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