NOB29 Series Digital Combined Meter Function
This series used in the real-time measurement on several electrical parameters in single-phase or 3-phase electric circuit and display by several LED nixietubes. One meter can instead of several common meters. Switching value output (higher and lower limit alarms) modules, analog value transmitting output module,RS485 communication module are optional offered for part model. It can conveniently realize the setting of many parameters including transformer multiply power by the keyboard of instrument.
Current, voltage,frequency, power factor combined meter: for measuring 3-phase voltage, 3-phase current, “frequency and power factor at the same time single-phase voltage, current,frequency combined meter: for measuring single-phase voltage, single-phase current, frequency at the same time 3-phase voltage, current, frequency combined meter: for measuring 3-phase voltage, 3-phase current, frequency at the same time 3-phase voltage, current combined meter: for measuring 3-phase voltage, 3-phase current at the same time3-phase current combined meter: for measuring 3-phase current at the same time.
NOB29 Series Digital Combined Meter Parameter
Technical Parameter Index Input Netword Single-phase,3-phase 3-wire,3-phase 4-wire Voltage Rated value AC 57.7V, 100V, 220V or 380V Overload Consistent:1.2 times Instantaneous: 2 times/30S Consumption <0.5VA(each phase) Impedance >500K Ω Current Rated value AC 1A or 5A Overload Consistent: 1.2 times Instantaneous: 20 times/1S Impedance <20mΩ(each phase) Frequency 45~65Hz Output Communication Output mode RS485 Protocol MODBUS_RTU Baud rate 1200/2400/4800/9600 Analog quantity Channel quantity 4 channel Output mode 0~20mA,4~20mA programmable Load ability ≤400Ω Switching value Channel quantity 4 channels Output mode Normally open relay contact output Contact capability AC 240V/1A Display mode LED display Demand time 1-60min(programmable) Measuring accuracy Voltage, current ±(0.5%FS+1digit) Frequency ±0.1Hz Power factor ±0.01PF Power supply Scope AC/DC 85~264V Power consumption <5VA Environment Temperature Operation: -10~50℃ Storage:-25~70℃ Humidity ≤85% RH,free of wet and gas corruption Elevation ≤3000m
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