ENR-DR Series Low Voltage Resistance Complete Set Equipment
I.Overview
In low-voltage power supply systems,single-phase grounding faults are the most common issues during the operation of generators and motors.When an arc grounding occurs at the fault point,it can further damage the stator winding insulation and even cause core burning and sintering.If not detected and quickly isolated,the fault may escalate into phase-to-phase or interturn short circuits.For these reasons,the international practice widely adopts high-resistance grounding at the neutral point of generators and motors to limit ground current and prevent various overvoltage hazards,achieving excellent operational experience;
II.Model Description
3. Device Working Principle
IV.Ordering Instructions
Please provide the following parameters when placing an order:
1.System rated voltage:(kV);
2.Short-time permissible current:(A);
3.Nominal resistance value:(Ω);
4.Short-time permissible current flow duration:(S);
5.Whether to install current transformers(CT):CT ratio and capacity;
6.Wiring method:top entry and bottom exit,bottom entry and bottom exit,optional;
7.Material of the resistor cabinet,cabinet(IP)protection level,color code,and installation location;
8.Whether to install grounding records and temperature-humidity control devices.
