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.