产品详细资料
根据以下公式计算二次谐波含量的百分比。如果用平均响应/读数表测量电流: 如果使用RMS响应/读数表测量电流,则: 打开并重新闭合S1。继电器不应工作。 降低IDC,直到元件工作。使用上述方程计算此时二次谐波的百分比。计算出的谐波百分比值应等于继电器设定值。7.5.2.10五次谐波抑制验证五次谐波限制的操作需要能够产生包含基波和五次谐波的电流信号的测试设备。大多数现代专用继电器测试仪器,如Powertec(或Manta)的DFR、Doble或MultiAmp仪器,都能够产生适当的信号。具有适当额定输出的功率运算放大器或功率音频放大器也可以用于产生适当的信号。 按照以下方式连接测试装置,以提供A相元件。将基本电流水平设置为CT额定二次值。应操作A相的谐波抑制差动元件。
Calculate the percent second harmonic content from the following equations. If the current is measured with average-responding/reading meters: If the current is measured with RMS-responding/reading meters, then: Open and reclose S1. The relay should not operate. Decrease IDC until the element operates. Calculate the percent of second harmonic at this point using the equations above. The calculated percent harmonic value should equal the relay setting. 7.5.2.10 Fifth Harmonic Restraint Verifying the operation of the 5th harmonic restraint requires test equipment capable of generating a current signal containing a fundamental and 5th harmonic. Most modern dedicated relay test instruments, such as Powertec's (or Manta) DFR, Doble, or MultiAmp instruments are capable of generating appropriate signals. A power operational amplifier with a suitably rated output, or a power audio amplifier, may also be used to generate the appropriate signal. Connect the test setup as below to supply the phase A element. Set the fundamental current level to the CT rated secondary value. The harmonic restraint differential element of phase A should be operated.
主营产品简介
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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