Energy meter applications

The use of electric meter
Use meter to note that at low voltage (less than 500 volts) and low current (tens Ann) cases, power meter can directly access circuits. At high voltage or high current circumstances, power meter can not directly access lines must comply with voltage transformer

Or a current transformer used. For direct access line power meter, according to the load voltage and current choose the right specifications to make Electric energy meter ated voltage and rated current equal to or slightly larger than the load voltage or current. In addition, the load electricity to power

Table rating above 10%, otherwise the measurement are not allowed. Sometimes did not move with the aluminum disk rotation. So the meter should not be too. If the election is too little too easy to burn energy meter.