Multi-Functional Monitoring And Control Power Meter

Code and Implication

Application

ZHIMING  brand of multi-functional monitoring and control meter is a high-performance intelligent instrument designed for real-time measurement and monitoring of power parameters and harmonics. It provides the following key functions:

• Real-time measurement of voltage, current, active power, reactive power, apparent power, power factor, and frequency
• Measurement of forward and reverse active/reactive energy
• Time-sharing and fixed-time energy metering
• Harmonic analysis (up to the 31st order for voltage and current)
• Real-time waveform display and power quality analysis
• Event logging and demand recording

The device includes multiple I/O interfaces for field-level monitoring and control, and is equipped with an RS-485 communication port supporting integration with intelligent power distribution systems and energy management platforms. This meter offers a high performance-to-price ratio and can fully replace traditional power transmitters, energy meters, and associated measurement instruments. It is widely used in:

• Energy management systems
• Power monitoring systems
• Industrial enterprises
• Public utilities
• Smart buildings
• Intelligent switchgear systems

Compliance Standards

• GB/T 22264.1-2008 – Mounted digital display electrical measuring instruments – Part 1: Definitions and general requirements
• GB/T 22264.7-2008 – Part 7: Special requirements for multi-functional meters
• GB/T 22264.8-2008 – Part 8: Recommended test methods
• GB/T 17215.322-2008 – AC static active energy meters (Class 0.2S and 0.5S)
• GB/T 17215.323-2008 – AC static reactive energy meters (Class 2 and 3)
• Multi-functional energy meters
• Electrical fire protection detector
• Code for Fire Protection Design of Tall Civil Buildings
• Code for Low Voltage Distribution Design
• Code for Residential Building Design
• Installation and Operation of Residual Current Devices (RCDs)
• Code for Building Fire Protection Design

Technical Specifications

Measurement Accuracy

• Voltage: Class 0.5
• Current: Class 0.5
• Active Power: Class 0.5
• Reactive Power: Class 0.5
• Frequency: ±0.02 Hz
• Active Energy: Class 0.5S or 0.2S
• Reactive Energy: Class 1 or 2
• Power Factor: ±0.5%

Auxiliary Power Supply

• Operating Voltage: AC/DC 80V ~ 270V
• Power Consumption: <4VA

Communication & I/O

• RS-485 Interface: 1 channel, Modbus-RTU protocol
  • Baud rate: 1200 ~ 9600bps (default: 2400bps)
• Digital Inputs: 4 dry contact inputs
• Relay Outputs: 3 outputs (AC 250V/5A, DC 30V/5A)
• Analog Outputs: 3 channels (0/420mA or 05/10V)
• Energy Pulse Outputs: 2 channels
  • Pulse constant: 8000 imp/kWh (or kvarh)

Environmental Conditions

• Operating Temperature: -10℃ ~ +55℃
• Storage Temperature: -25℃ ~ +70℃
• Relative Humidity: ≤93% (non-condensing, no corrosive gases)
• Altitude: ≤2500m

Signal Input

• Wiring Mode: Three-phase four-wire / three-phase three-wire
• Rated Voltage: AC 57.7V, 100V, 220V, 380V
• Rated Current: AC 1A or 5A
• Overload Capacity:
  • Voltage: 1.2x (continuous), 2x/1s (instantaneous)
  • Current: 1.2x (continuous), 10x/5s (instantaneous)
• Power Consumption:
  • Voltage: <1VA per phase
  • Current: <0.4VA per phase
• Input Impedance:
  • Voltage: >300kΩ
  • Current: <20mΩ
• Frequency Range: 45 ~ 65Hz

Electrical Safety

• Insulation Resistance: >100MΩ
• Dielectric Strength: AC 2kV (1 min)

Electromagnetic Compatibility (EMC)

• Electrostatic Discharge (ESD): IEC Level 4
• Electrical Fast Transients (EFT): IEC Level 4
• Surge Immunity: IEC Level 4

Product Size

Specification & Dimensions