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The purpose of resistance grounding is to limit phase-to-ground fault currents. Below, browse a selection of resistance grounding products from Littelfuse, including both low resistance and high resistance products.
The SE-330 is an advanced ground-fault and neutral-grounding resistor monitoring relay that is compl...More
SupplyVoltageVAC: 28 - 52, 65 - 265
SupplyVoltageVDC: 36 - 72, 85 - 275
Relay Contacts Config: 1 Form A; 1 Form B; 2 Form C, 2 Form A; 2 Form C
The SE-330AU is an advanced earth-fault and earthing-resistor monitoring relay for low- and medium-v...More
The SE-330HV is an advanced ground-fault and neutral-grounding resistor monitoring relay that is com...More
The SE-325 Neutral-Grounding-Resistor Monitor is used on resistance-grounded systems up to 25 kV to ...More
SupplyVoltageVAC: 120, 240
SupplyVoltageVDC: 120
Relay Contacts Config: 1 Form A (N.O.)
High-resistance grounding prevents many of the problems that are associated with ungrounded and soli...More
CT secondary current Amps: 0.05, 1
InputVoltage (V): 480, 600, 4160
Mounting Method: Floor Mount
A high-resistance-grounded system uses a neutralgrounding resistor (NGR) with a low let-through current to limit ground-fault current. This is an improvement over low-resistance- or solidly grounded systems because, in those systems, a ground-fault flash hazard exists and a ground fault can result in substantial point-of-fault damage.
A high-resistance-grounded system uses a neutral- grounding resistor (NGR) with a low let-through current to limit ground-fault current.
This document describes the DeviceNet features supported by the new revision SE-330, SE-330AU, and SE-330HV.
This document describes the Anybus DeviceNet features supported by the SE-330/SE-330AU/SE-330HV.
The Profibus-DP slave interface on the SE-330/ SE-330AU/SE330HV is used to access meter data and provide reset functions. Set points can be read but not written.
This document describes the EtherNet/IP features supported by the new revision SE-330, SE-330AU, and SE-330HV.
This document describes the Anybus Ethernet IT features supported by the SE-330/SE-330AU/SE-330HV.
This document describes the Modbus/TCP features supported by the new revision SE-330, SE-330AU(1), and SE-330HV.
This manual describes the features of the SE-330, SE-330AU, and SE-330HV IEC 61850 interface.
The purpose of this document is to declare the conformance of the SE-330 IEC 61850 server to the IEC 61850 standard.
This software is used to receive data from SE-330, SE-330AU, and SE-330HV Neutral-Grounding-Resistor Monitors. It will display the relay's set points as well as measured values.
Resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems.
SE-MON330 is a PC-based application designed to access set-points, measured values, and trip records from the SE-330 Neutral-Grounding-Resistor Monitor, the SE-330HV Neutral-Grounding-Resistor Monitor, and the SE-330AU Neutral-Earthing- Resistor Monitor.
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