High Resistance Grounding

When a ground fault occurs ground fault current will flow as in a solidly grounded system.

High resistance grounding. When a ground fault occurs ground fault current will flow as in a solidly grounded system. Providing integrated fault tracing for easy detection the solution is ideal for critical applications such as industrial oil and gas petrochemical. Since the system is technically grounded e g. High resistance grounding system grounds the neutral through a resistance which limits the ground fault current to a value equal to or slightly greater than the capacitive charging current of that system.

High resistance grounding systems hrg are a subset of neutral grounding resistors which allow for continuous and safer operation during ground fault conditions. The pulserplus net is the latest high resistance grounding system from post glover resistors. Resistance grounded systems hrg lrg the idea of a neutral grounding resistor is to limit the maximum fault current in order to avoid damages and hazards caused by ground faults. High resistance grounding of the neutral limits the ground fault current to a very low level typically from 1 to10 amps and this is achieved by connecting a current limiting resistor between the neutral of the transformer secondary and the earth ground and is used on low voltage systems of 600 volts or less under 3000 amp.

Hrg stands for high resistance grounding an electrical supply system that is used frequently in applications that cannot afford a shutdown or that must control ground fault voltage on driven equipment. The high resistance grounding hrg method for electrical power systems has some of the same advantages as ungrounded systems. These advantages include the reduction of equipment damage due to the low value of the ground fault current and no need for immediate removal of the first ground fault with the additional benefit of achieving acceptable values of transient overvoltages. Our advanced systems can detect ground faults and control transient overvoltages during phase to ground faults across multiple feeders and come with many features to enhance protection reliability and ease of maintenance.

Hrg stands for high resistance grounding an electrical supply system that is used frequently in applications that cannot afford a shutdown or that must control ground fault voltage on driven equipment. Eaton s high resistance grounding system limits the magnitude of current during a ground fault reducing arc flash energy to increase personnel safety and minimize the failure of motors transformers power cables and other equipment. High resistance grounding protective relays will work properly.