Introduction to the technical parameters and usage methods of the digital display ammeter
technical parameter
Accuracy grade voltage, ammeter is 0.5, 0.2; frequency meter is 0.1; power, power factor meter is 0.5 display mode three and a half LED display or four display input nominal input current DC5A, DC20mA, etc. Voltage AC100V, AC220V, AC380V, DC100V, DC200V, DC380V, DC75mV, etc. Overload Continuous: 1.2 times Instantaneous: 2 times the voltage (10 seconds), 10 times the current (5 seconds) Frequency 50/60Hz±10% Power Auxiliary Power Supply Switching Power Supply: AC, DC80~270V, Linear Power Supply: AC220V±5% Power Consumption <3VA Dielectric Strength AC2kV Insulation Resistance ≥100MΩ Average Trouble-Free Working Time ≥50000h Working Conditions Ambient Temperature: -10~55℃, Relative Humidity ≤93%, no corrosive gas place, altitude ≤2500m.
Instructions
You don’t need to connect resistors in series, you can directly connect them into the circuit, but you must estimate the maximum value of the measured current. Usually, the measurement range of the meter I use is not large, the maximum is about 20A, and it can’t be measured for a long time. Ammeter.
Scope of application
Control systems, energy management systems, substation automation, distribution network automation, building automation, industrial automation, community power monitoring, intelligent buildings, switch cabinets, etc.
