电机保护

Protect Motors From Harmful Overvoltage and dV/dt Spikes

Motor Protection

Introduction

Motors controlled by VFDs or servo drives require additional attention to avoid overvoltage spikes, known as dV/dt. Voltage wave reflection is a function of the voltage rise time
(dV/dt) and the length of the motor cables. This phenomenon creates additional overvoltage spikes which cause premature degradation and failure to the motor insulation.

The challenge for OEMs, system integrators and distributors is to ensure the installed motors are well protected from overvoltage. Markets using VFDs have adopted a special motor, better known as, a motor rated VFD or inverter duty motor.

For more information, please visit: Motor protection application

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FIN47SNB
  • 额定电压  0 - 500 Vac
  • 降低电压降低率
  • 远程连接指示器
  • 因为并联安装的紧凑结构

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FIN5955
  • 差模阻抗
  • 从3到20安培的额定电流
  • 额定电压 600 Vac
  • 达到250Hz频率输出的低功耗
  • 电机上的尖峰电压保护

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FIN5980P
  • 从9到22安培的额定电流
  • 额定电压 600 Vac
  • 差模阻抗
  • 消除电压上升率
  • 过压尖峰再生到直流总线

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FIN5983
  • 从12到60安培的额定电流
  • 额定电压 600 Vac
  • 差模阻抗
  • 消除电压上升率

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FIN900
  • 共模阻抗
  • 从10到280安培的额定电流
  • 额定电压 500 Vac
  • 高阻抗
  • 减少高频干扰
  • 提供电缆/螺丝连接
FIN900.(010 - 030).C

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FIN905SF
  • 三相正弦滤波器
  • 从8到880安培的额定电流
  • 额定电压 480 Vac
  • 降低电压降低率
  • 增加电机寿命

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FIN915SFH
  • 从8到1100安培的额定电流
  • 额定电压 480 Vac
  • 降低电压降低率
  • 增加电机寿命
  • 高频应用中的极低发热

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FIN930
  • 共模阻抗
  • 从10到200安培的额定电流
  • 额定电压600 Vac
  • 低阻抗
  • 降低逆变器-电机的dV / dt
  • 增加电机寿命

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FIN950U
  • 额定电压 480 Vac
  • 频率范围50 - 60 Hz
  • 绝缘等级H
  • 最大输出频率 100 Hz

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FIN958
  • 从12到110安培的额定电流
  • 电机上的尖峰电压保护
  • 达到1 kHz频率输出的低功耗

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FIN960F
  • Rated currents from 7 - 500A
  • Nominal voltage 750 Vac
  • High frequency application
  • Synchronous electrosplindle application
  • No heating on the core
  • High linearity versus frequency

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FINSTP
  • 额定电压 600 Vac 
  • 降低电压降低率
  • 非常低的功耗
  • 安装简便

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FINTR / FINFE
  • Ferrite core
  • Very high permeability ferrite
  • Plastic cover protection

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