春晨YCPWK卷筒抗拉电缆

江苏春晨电缆有限公司生产YCPWK卷筒抗拉电缆，按测量方法：可分为直读式和比较式两种。直接指示被测量数值的仪表，称为直读式仪表，例如电压表、电流表、功率表等；被测量数值用“标准量”比较出来的仪表，称为比较式仪表，如平衡电桥、补偿器等。此处的电工仪表章节主要介绍直读式仪表。

According to the measurement method, it can be divided into direct reading type and comparative type. The instrument that directly indicates the measured value is called direct reading instrument, such as voltmeter, ammeter, power meter, etc.; the instrument that compares the measured value with "standard quantity" is called comparative instrument, such as balance bridge, compensator, etc. The electrical instrument chapter here mainly introduces direct reading instrument.



按准确度：可分为0.1级、0.2级、0.5级、1.0级、1.5级、2.5级、和5.0级七种。0.2级仪表的允许误差为0.2%，0.5级仪表误差为0.5%，以此类推。0.5级以上的仪表准确度较高，多用在实验室作为校验仪表。1.5级、2.5级等准确度较低，一般装在配电盘和操作台上，用来监视电器设备允许情况。

According to the accuracy: it can be divided into seven grades: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5 and 5.0. The allowable error of class 0.2 instrument is 0.2%, the error of class 0.5 instrument is 0.5%, and so on. The accuracy of instruments above 0.5 is high, and they are mostly used as calibration instruments in the laboratory. The accuracy of level 1.5 and level 2.5 is relatively low, and they are generally installed on the distribution board and operation console to monitor the allowable condition of electrical equipment.



点击文下的下一节，开始学习电工常用的万用表（测电流、电压、电阻等）、摇表、钳表、电度表这四种测量仪表。

Click the next section to learn the four measuring instruments commonly used by electricians: multimeter (measuring current, voltage, resistance, etc.), megger, clamp meter and watt hour meter.