Introduction
This device is designed by advanced SOC single-chip processing
system and manufactured by SMT process. It has the characteristics
of simple circuit, high reliability and high measurement accuracy.
It can realize active/reactive energy measurement, current,
voltage, power and power factor measurement. Through NB-loT
(narrowband Internet of Things) wireless communication, it has good
anti-interference and anti-attack performance, wide operating
temperature range, and can work stably and reliably for a long
time.
It is suitable for users who implement single-rate electricity
prices, such as small and medium-sized enterprises and
institutions, commercial users, residential users, secondary
circuit users, single-phase power equipment with narrow space,
photovoltaic two-way measurement and charging pile measurement, and
realize remote centralized reading. Product standard:
GB/T17215.321.
Product features
1. LCD digital display: total power, standard 6-digit integer +
2-digit decimal (999999.99kWh/kvarh).
2. Accurately measure the forward and reverse active power, and can
display the total power, forward power, reverse power, and total
reactive power.
3. Meter reading can be performed through the RS485 communication
interface, DL/T645-2007 is in even parity mode, and MODBUS-RTU is
in no parity mode.
4. The NB-loT communication protocol can be opened to connect to
third-party systems. All wiring uses bottom inlet and outlet lines,
and the external amplified antenna has a stable signal.
5. Remote control of the switch, after power failure, all stored
data will not be lost and can be maintained for more than 15 years.
6. Working temperature: -20℃~+55℃.
7. Extreme temperature: -25℃~+70℃.
Technical Parameters
Item | NB-IoT single-phase electricity meter | NB-IoT three-phase electricity meter |
Accuracy level | Active power level 1 |
Reference frequency | 50Hz |
Reference voltage | AC220V (Working voltage 90~300V) | AC3x220/380V±20% |
Direct current | 5(60)A,20(80)A | 1.5(6)A mutual induction type, 5(60)A, 10(80)A direct type |
Power consumption of the whole device | ≤1W/5VA | ≤2W/10VA per phase |
Baud rate | 1200~9600bps |
