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Dual-circuit DC Energy Meter SPM90B
Din-rail type DC energy meter
spm90B Dual-circuit DC Energy Meter right side.png
spm90B Dual-circuit DC Energy Meter front side.png
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Dual-circuit DC Energy Meter SPM90B

  1. High-Voltage Dual-Circuit Monitoring: Independent measurement for two DC circuits up to 1500V, ideal for large-scale solar farms and industrial power systems.

  2. Precision Energy Analytics: Real-time DC measurement and Class 0.5S bidirectional energy metering with multi-tariff support for accurate billing.

  3. Flexible Communication Suite: Dual RS-485 ports and an infrared interface enable robust system integration and on-site configuration.

  4. Wide-Range Power Compatibility: Operates on a 9-72V DC supply, ensuring reliable performance in diverse and harsh electrical environments.

  5. Comprehensive Data Logging: Stores 64 event logs, 12 months of billing data, and max/min parameter records for detailed performance analysis.

      Main Documents

      SPM90B Maintenance/User
      Contact us

      Product Introduction

        Overview

      • 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.

        Product Selection

        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

      Specification

      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