Neutral grounding resistors are used inindustrial distribution system for resistance grounding or connectedtransformer and generators.
Limiting fault current to a reasonablelevel limits the fault current to a value which is sufficient enough to operateprotective relays limits damage to equipment provides safety for personnel.
General
Designed and tested with IEEE32-1972
All stainless steel resistor elements
Current transformer included EN60044-1
Epoxy based electrostatic powder paintedhot-dip galvanized or stainless stain enclosure
All part factory assembled. No fieldassembly required
Meets seismic zone 4 requirements
Specification
Designed and tested with IEEE 32-1972
•
All stainless steel resistor elements.
•
Current transformer included EN60044-1
•
Epoxy based electrostatic powder paintedhot-dip galvanized or stainless stain enclosure
•
All parts factory assembled. No fieldassembly required
•
Meets seismic zone 4 requirements
Standards: IEEE32, EN60137, EN60529,EN60298, EN60273, EN60071, EN60060
Technical specifications
Operation voltage: up to 72kV line to line
Rated current: up to 2000A
Ambient temperature :< 55
Resistor elements: stainless steel
Protection degree: IP00-IP54
Options
Motorized-manual disconnector
Header thermostat
Vacuum contactor
Elastimold bushing input
Current-voltage transformer
Relays
External bushing
Enclosure features
2mm hot-dip galvanized or stainless steel
Assemblies are available IP00 or IP55
Required color RAL 70XX
Solid steel one piece top
Inox eyebolt for handling ease
Tests
Total DC resistance
Withstand test of dielectric strength
Resistor block insulation test
Insulation resistance measurement betweenN-G
Paint and galvanized thickness test
Information needed to quotation
All custom design are available
System voltage
Line to neutral voltage
Current rating
Resistance level
Maximum time ON (sec.)
Bushing/cable-open or enclosed
Current transformer ratio (if applicable)
Grounding transformer KVA rating (ifapplicable)
Special options
