... 20A 25A 30A 40A 50A 60A Anolog panel meter,current meter,ammeter,voltage meter,frequency meter: The scope of ... DC,Voltage,power synchronous volume,frequency,expended voltage and overload current etc.The product performance is accordance with GB7676-98standard. ... 60A, external connected the secondary 5A or 1A current transformers when the current above 60A.Product name: 91C4 voltmeterAccuracy: 2. ...