DC intelligent electricity meter

The DJZ1226 DC Smart Electricity Meter (hereinafter referred to as the ‘electricity meter’) uses microelectronics technology to measure DC electricity. This electricity meter is a high-tech product manufactured using internationally advanced ultra-low power consumption large-scale integrated circuit technology and SMT process. The core chip uses a self-developed 32-bit high-precision
ADC chip.
This electricity meter features LCD display, electricity measurement, clock, RS485 communication, electricity pulse and second signal output, instantaneous data measurement and monitoring functions, and is suitable for DC electricity measurement.
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Specifications and Main Technical Indicators：

Project	Technical Specifications
Reference Voltage	Un 1000V, 750V, 600V
Reference Current	In 100A
Accuracy Class	CL.0.5
Optical Pulse Constant	1000 imp/kWh
Electrical Pulse Constant Default	1000 imp/kWh, 50-1000 imp/kWh configurable
Maximum Voltage	1.15Un
Maximum Current	300A
Operating Voltage Range	DC10V-30V
Minimum Current	Imin 1.0A
Start-up Current Ist	0.2A
Creep	Features anti-creep logic design
Voltage Circuit Power Consumption	≤ 0.5W
Current Circuit Power Consumption	≤ 40mW/A*Imax
Auxiliary Power Supply Power Consumption	≤ 2W
Clock accuracy	±0.1s/℃/24h (at ambient temperature 23℃)
Data retention time after power failure	>10 years
Operating temperature	-25°C to +60°C
Storage and transportation temperature	-40°C to +70°C
Storage and operating humidity Annual average	≤75%
Weight	Approximately 280 grams
Display range	(0 to 999,999.99) kWh
Communication baud rate	RS485 interface: 1200 bps, 2400 bps, 4800 bps,   9600 bps, 19200 bps, 38400 bps, 115200 bps,   (factory default: 38400 bps)
Communication address	12-digit meter address
Communication protocol	DL/T 698.45; DL/T 645-2007