Single-phase digital Ammeter
Wenzhou NCR Industrial Co., Ltd. [China] 
aa Measuring 1-phase current, voltage, active power, reactive power, power factor, frequency etc. aa With RS485 communication
| Accuracy | Class 0.5 (default); Class 0.2 | |||||||||||||||
| Display | LED | |||||||||||||||
| Input | Rated value | Voltage: AC100V/220V/380V etc.; Current: AC1A/5A etc. | ||||||||||||||
| Overload | Continuous 1.2 times; Instant: voltage 2 times/1s, current 10 times/5s. | |||||||||||||||
| Frequency | 45-55Hz or 60Hz | |||||||||||||||
| Power supply | Working range | AC220V or AC/DC 85V-265V | ||||||||||||||
| Power consumption | < 4 VA | |||||||||||||||
| Transmission output | < 510Ω when current output DC4-20mA; > 20kΩ when voltage output DC0-5V | |||||||||||||||
| Communication interface | RS485 interface; MODUBS-RTU protocol; baud rate 2400/4800/9600/19200bps | |||||||||||||||
| Relay output | Relay contact capacity: AC5A/250V resistive, DC5A/30V resistive | |||||||||||||||
| On-off input | R<500Ω on; R>100kΩ off | |||||||||||||||
| Dielectric strength | Power supply & input >2kV; Power supply & output >2kV; Input and output > 1kV | |||||||||||||||
| Insulation resistance | ≥ 100MΩ | |||||||||||||||
| Average working time to failure | ≥ 50000 h | |||||||||||||||
| Working condition | -10~55°C; Relative humidity < 93%; Non-corrosive gas; Altitude ≤ 2500M. | |||||||||||||||
| Storage condition | -20~75°C; Relative humidity < 93% | |||||||||||||||
Single-phase digital Ammeter
