Din-rail type DC energy meter

Dual-circuit DC Energy Meter SPM90B

Name: Dual-circuit DC Energy Meter SPM90B
Rating: 5 (141 reviews)

High-Voltage Dual-Circuit Monitoring: Independent measurement for two DC circuits up to 1500V, ideal for large-scale solar farms and industrial power systems.
Precision Energy Analytics: Real-time DC measurement and Class 0.5S bidirectional energy metering with multi-tariff support for accurate billing.
Flexible Communication Suite: Dual RS-485 ports and an infrared interface enable robust system integration and on-site configuration.
Wide-Range Power Compatibility: Operates on a 9-72V DC supply, ensuring reliable performance in diverse and harsh electrical environments.
Comprehensive Data Logging: Stores 64 event logs, 12 months of billing data, and max/min parameter records for detailed performance analysis.

Main Documents

SPM90B delivers dual-channel DC energy monitoring for EV charging, solar power, and telecom infrastructure. Its independent dual-circuit design enables simultaneous tracking of two DC feeds with 0.5% accuracy, ideal for multi-gun chargers and hybrid energy systems. Equipped with RS485/Ethernet connectivity and advanced alerting, this meter ensures seamless integration into smart infrastructure and IoT ecosystems.

SPM90B - ①
①Optional Extension:
C	Dual RS-485 interfaces (includes the standard 1× RS-485), with infrared transceiver support
Current Rating (optional): Compatible with 100/150/200/300/400/500/600/800A shunt Note: Default rating is 100 A if not specified

Accuracy	Class 0.5S
Rated Power Supply	9 to 72V DC
Power Consumption	<1.5W
Rated Input Current	Configurable, Input method: External 75mV shunt resistor
Input Voltage	Rated:1000V DC Maximum:1500V DC
Shunt Resistor Speciﬁcation	75mV
Shunt Accuracy	Class 0.2S
Operating Temperature	-25 to 65 ℃
Maximum Operating Temperature	-40 to 75 ℃
Start-up Current	0.002 Ib
Baud Rate	2400,4800,9600,19200 (default:9600)
Protocol	Modbus-RTU