描述
产品概述
WIDAP UFW30.156 6K8J175W0823是一款高功率线绕电阻器，属于WIDAP公司的FW系列管状电阻器。该型号设计用于工业场景中的高负载应用，如制动电阻、变频驱动器保护及电力系统缓冲等。其核心参数包括6.8 kΩ阻值、175 W额定功率，并符合严格的公差和温度系数要求。
核心参数与技术特点
1.电气性能
阻值：6.8 kΩ（标注为6K8）。
额定功率：175 W（标注为175W）。
公差：J级（±5%）（标注为6K8J）。
温度系数：+40 ppm至+80 ppm/°C（典型值）。
工作电压：未明确标注，但参考同系列型号（如VFW30.265的200 W型号支持690 VAC最大电压），推测其耐压等级可能为690 VAC或更高。
2.结构与材料
电阻体：陶瓷基体，表面覆盖无机胶结层或釉面涂层，提供高耐热性和机械强度。
绕组材料：铜镍（CuNi）或铬镍（CrNi）合金线，确保低电阻率和长期稳定性。
外壳设计：管状结构，可选穿孔金属盖或支架安装，适应散热需求。
3.环境适应性
工作温度：表面温度可达300°C（参考FW40系列数据）。
防护等级：未明确标注，但同类产品（如FW系列）通常具备IP20或IP23防护能力。
应用场景
工业驱动系统：
作为制动电阻，用于变频驱动器（VFD）的过压保护和能量释放。
电力电子设备：
在UPS、逆变器等设备中作为负载电阻，吸收瞬时过载能量。
测试与校准：
用于高精度电力系统测试，提供稳定的电阻负载。
Product Overview
WIDAP UFW30.156 6K8J175W0823 is a high power wire-wound resistor belonging to WIDAP’s FW series tubular resistor.This model is designed for high-load applications in industrial scenarios,such as brake resistors,variable frequency driver protection,and power system buffering.Its core parameters include 6.8 kΩresistance,175 W rated power,and meet strict tolerance and temperature coefficient requirements.
Core parameters and technical characteristics
1.Electrical performance
Resistance value:6.8 kΩ(noted as 6K8).
Rated power:175 W(noted as 175W).
Tolerance:Class J(±5%)(noted 6K8J).
Temperature coefficient:+40 ppm to+80 ppm/°C(typical).
Operating voltage:Not explicitly marked,but referring to the same series of models(such as the 200 W model of VFW30.265 that supports a maximum voltage of 690 VAC),it is speculated that its withstand voltage level may be 690 VAC or higher.
2.Structure and Materials
Resistance body:Ceramic matrix,surface covered with inorganic cementing or glaze coating,providing high heat resistance and mechanical strength.
Winding material:Copper nickel(CuNi)or chromium nickel(CrNi)alloy wires to ensure low resistivity and long-term stability.
Housing design:tubular structure,optional perforated metal cover or bracket installation to meet heat dissipation needs.
3.Environmental adaptability
Operating temperature:The surface temperature can reach 300°C(refer to FW40 series data).
Protection level:Not clearly marked,but similar products(such as the FW series)usually have IP20 or IP23 protection capabilities.
Application scenarios
Industrial Drive System:
As a brake resistor,it is used for overvoltage protection and energy release of variable frequency drivers(VFDs).
Power electronics equipment:
It is used as a load resistor in UPS,inverter and other devices to absorb instantaneous overload energy.
Testing and calibration:
Used for high-precision power system testing,providing stable resistive load.
