RadiSys EXM-MX数字量控制板卡

产品详细资料
745可以确定其测量的每个电流的谐波分量。这使其能够计算总谐波失真（THD）以及谐波降额因子，该因子可用于调整相位时间过电流保护，以考虑谐波电流产生的额外内部能量耗散。745能够测量频率高达21倍标称系统频率的谐波分量。为每个监测绕组的每个相位计算实际值。上面的例子显示了谐波分量（在这种情况下是二次谐波）的典型情况下显示的内容。截至21日的所有谐波都有类似的显示。显示绕组1至3的每相电流的二次谐波幅值。值被表示为相应基频分量的幅度的百分比THD被计算和显示。每个THD值计算为单个谐波振幅的平方和的RMS值与基频的RMS值的比值。计算基于IEEE标准519-1986。实际值消息显示绕组1至3的A、B和C相电流的总谐波失真，以基频分量的百分比表示。括号中的数字表示正在计算THD的编程频带（根据谐波数）。
The 745 can determine the harmonic components of every current that it measures. This allows it to calculate total harmonic distortion (THD) as well as a harmonic derating factor that can be used to adjust phase time overcurrent protection to account for additional internal energy dissipation that arises from the presence of harmonic currents.The 745 is capable of measuring harmonic components up to a frequency of 21 times nominal system frequency. An actual value is calculated for each phase of each monitored winding. The example above shows what is displayed in a typical case for harmonic components (in this case the second harmonic). Similar displays exist for all harmonics up to the 21st.The second harmonic magnitude for each phase current of windings 1 through 3 are displayed. Values are expressed as a percentage of magnitude of the corresponding fundamental frequency component THD is calculated and displayed. Every THD value is calculated as the ratio of the RMS value of the sum of the squared individual harmonic amplitudes to the RMS value of the fundamental frequency. The calculations are based on IEEE standard 519-1986. The actual values messages display the total harmonic distortion for phase A, B, and C currents for windings 1 through 3, expressed as a percentage of the fundamental frequency component. The numbers in parentheses indicate the programmed frequency band (in terms of harmonic number) over which THD is being calculated.
主营产品简介
专注于DCS、PLC、机器人控制系统、大型伺服四大系统领域。

主营产品各种模块/卡件，控制器，触摸屏，伺服驱动器。

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●使用前:

在操作和维护，安装设备之前，请阅读并严格遵守安全相关的信息。

Read and strictly follow safety-related information before operatingmaintainingand installing equipment.

●使用者要求:

必须从事安装，组装或维护设备等相关工控电气机械以及其他相关技术的人员。

Must be engaged in the installation,assembly or maintenance of equipment and other related industriacontroeectrica machinery and other related technica personne.应用范围:

应用于品牌本系列工业以及生产生活自动化设备产品。

Used in the brand of this series of industriaand production automation eauipment products

适用于场景:系统集成，非标定制，产线升级改造，原设备电气替换等等。

Suitable for scenarios:system integration,non-standard customizationproduction line upgrading and transformation,electrical replacement of original equipment,etc.

●操作人员:

应该由本品牌专业培训操作员来安装、操作和维修设备。专业人员具有技术能力强，熟悉安全信息和安全实施:

熟悉设备的安装加工、操作和维护:熟悉处理所有的潜在危险情况。

Equipment should be installed,operated and maintained by trained operators from the brand

●危险情况

警告

.请注意使用人员的人身安全。

●除了产品特性以及功能，还需了解产品的使用寿命环境。

●充分学习产品使用手册，否则非专业人员可能会造成人身危险。

Study the product instruction manual thoroughlyotherwise it may cause personal danger to non-professionals.

●服务行业

适用水泥，木业，石业，橡胶，石油，化工，发电，环保，水处理，制冷，交通，钢铁，食品，饮料，船舶，制冷等行业

Applicable to cementwood,stone,rubber,petroleumchemical, power generation