1. Testing (CT) current transformer: Open the machine and select the CT testing interface, choose the type of transformer such as M metering level, P level, etc; Check the options that need to be tested, such as excitation, transformation ratio, error, resistance, load, etc., and set the test parame
1. Connect the power supply, connect the current output terminal to the primary side of the tested current transformer, and connect K1 and K2 to the secondary side of the current transformer. Short circuit the normally closed switch, otherwise the test cannot be carried outPS: In practical applicat
Pour point and solidification point are important indicators used to describe the fluidity of liquids, especially oils, under low temperature conditions. They are all key parameters for measuring the low-temperature performance of oil products.1、 Pour a littleDefinition: Pour point refers to the lo
Malaysian customers came to Huazheng Electric for inspection and learning, expressed satisfaction with Huazheng Electric's services and products, and reached a consensus on in-depth cooperation.
I、 Concept: Refers to the distortion of current or voltage waveforms, which is a sine wave component that is an integer multiple of the fundamental frequency. For example, in a 50Hz power system, 100Hz, 150Hz, 200Hz, etc. are all harmonics.II、 Causes: Mainly caused by nonlinear loads, such as freq