1. The variation preheats the DC current transformer, rises to the rated current value for 10 minutes, and then rapidly drops to any point in the measuring range, the error variation between the ascending and descending values shall not be greater than 1/3 of the...

When the DC current transformer under test has analog voltage output, the method of measuring error can be used.  The method of measuring difference can reduce the influence of current source output fluctuation on error verification test. When the Conversion...

The principle of current transformer is based on the principle of electromagnetic induction. The current transformer is composed of a closed core and a winding.  Its primary winding turns are very few, and it is connected in the circuit of the current to be measured,...

In the power generation, transformation, transmission, distribution and use of electricity in the line the size of the current varies, from a few to tens of thousands of amps.  In order to facilitate measurement, protection and control needs to be converted to a more...

Current transformer and transformer similar is also based on the principle of electromagnetic induction, transformer is to change the voltage and current transformer is to change the current.  Current transformer connected to the current measured winding (turns number...

2.1 rated capacity: the apparent power consumed when the rated secondary current passes through the rated secondary load. The rated capacity can be used in apparent power V. A means, can also be expressed with the secondary rated load impedance.  2.2 primary rated...