中性点接地电阻


  • SE-330

  • SE-330是一款先进的接地故障和中性点接地电阻监控继电器,符合……更多

  • 工作
    电压
    VAC:
     28 - 52, 65 - 265

  • 工作
    电压
    VDC:
     36 - 72, 85 - 275

  • 继电器触点配置: 1 A型;1 B型;2 C型;2 A型; 2 C型

  • SE-330AU

  • SE-330AU是一种先进的接地故障和接地电阻监测继电器,可用于低电压和中等电压……更多

  • 工作
    电压
    VAC:
     28 - 52, 65 - 265

  • 工作
    电压
    VDC:
     36 - 72, 85 - 275

  • 继电器触点配置: 1 A型;1 B型;2 C型;2 A型; 2 C型

  • SE-330HV

  • SE-330HV是一款先进的接地故障和中性点接地电阻监控继电器……更多

  • 工作
    电压
    VAC:
     28 - 52, 65 - 265

  • 工作
    电压
    VDC:
     36 - 72, 85 - 275

  • 继电器触点配置: 1 A型;1 B型;2 C型;2 A型; 2 C型

  • PGR-5330

  • PGR-5330是一款先进的接地故障和电阻监控继电器。 PGR-5330能够测量中性……更多

  • 通信: RS/TIA-232, RS/TIA-232
    DeviceNet, RS/TIA-232
    以太网,RS/TIA-232
    Profibus现场总线

  • 频率: 50
    60
    ASD

  • 暂无信息

Resistance Grounding eliminates transient overvoltages and single phase Arc-Flash hazards by reducing the ground-fault current to 5 A, as well as the ability to locate the ground fault. Per IEEE Standard 141-1993, Arc-flash hazards are eliminated if the ground-fault current is reduced to 5 A or less. For systems 2.4 kV and higher, low-resistance grounding systems can be used. Properly sized resistance grounding systems solve two problems of ungrounded systems—transient overvoltages and difficulty locating ground faults.

pdf icon Improving Drill Rig Reliability with High Resistance Grounding - Case Study

pdf icon Littelfuse Relays Drill Home a Safety Solution for Hydraulic Fracturing - Case Study

pdf icon Monitoring Neutral Grounding Resistors

Resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems.