A neutral grounding resistor connected between the transformer or system neutral and earth to limit earth-fault current to a predefined value, protecting equipment while allowing sufficient current for protective relay pickup. Elements are typically edge-wound stainless steel grids or wire mesh selected for the specified fault current and thermal time rating. Commonly applied on distribution transformer neutrals in utility substations and industrial MV networks.
Generator Neutral Grounding Resistors & Leads Cubicles
MV 12–36 kV
IEEE 32, IEC 60076-6, IEC 62271-200, IEC 60529