NS series grounding resistance cabinet functions:
1. The resistance cabinet is grounded with high resistance at the neutral point of the generator to limit the grounding current and prevent various overvoltage hazards.
2. Neutral grounding through resistance can limit the fault current in an appropriate range, improve the sensitivity of relay protection and play the role of tripping. At the same time, the fault point can only be slightly burned locally. Transient overvoltage is limited to 2.6 times of normal line voltage to neutral point voltage, which limits arc reignition and prevents arc gap overvoltage from damaging main equipment.
3. At the same time, it can effectively prevent ferroresonance overvoltage and ensure the safe operation of the generator. It has a good effect on reducing the overvoltage of power grid and improving the safety and reliability of power grid.
Types of NS series grounding resistance cabinets:
1, grounding resistance cabinets can be divided into NS-FZ generator neutral grounding resistance cabinets and NS-BZ transformer neutral grounding resistance cabinets according to different protection objects.
2. Grounding resistance cabinets can be divided into NS-DR low-voltage grounding resistance cabinets, 6kV grounding resistance cabinets, 10kV grounding resistance cabinets, 20kV grounding resistance cabinets, 35kV grounding resistance cabinets, etc.
3. Grounding resistance cabinets can be divided into outdoor use and indoor use according to different installation locations.
4. Grounding resistance cabinets can be divided into high-resistance grounding resistance cabinets and low-resistance grounding resistance cabinets according to the resistance value of resistors.
5. Grounding resistance cabinets can be divided into grounding resistance cabinets and grounding resistance cabinets.