Schneider PM5350 Multifunction Power Meter

Model Explanation

Meaning of each component in the full model METSEPM5350:

The PM5350 series includes PM5350P (Standard Type), PM5350B (Basic Type) and PM5350IB (Introductory Type). They share consistent core measurement functions, with differences in advanced functions such as harmonic analysis and the number of communication interfaces.

1. Parametri tecnici fondamentali

III. Caratteristiche funzionali

1. Core Measurement Functions

Full Electrical Parameter Monitoring: Real-time measurement of over 30 electrical parameters including three-phase voltage, attuale, power, energy, frequency and power factor

Harmonic Analysis: The Standard Type supports measurement of harmonics up to the 31st order and calculation of Total Harmonic Distortion (THD) for power quality diagnosis

Bidirectional Energy Metering: Supports multi-tariff energy statistics to meet cost allocation requirements

Event Logging: Built-in 30 alarm types for recording abnormal events (sovratensione, sottotensione, sovracorrente, three-phase unbalance, ecc.) with time stamps

2. Control and Communication Capabilities

Digital Input: 4 DI channels for monitoring circuit breaker status and switch position (no external power supply required)

Relay Output: 2 RO channels for alarm output, load control or circuit breaker tripping, with contact rating of AC 250V/5A and DC 30V/5A

Communication Protocol: Supports Modbus RTU (Modbus TCP/IP optional), enabling seamless integration with SCADA, EMS and other systems

Data Storage: Built-in non-volatile memory for storing historical data, event logs and configuration parameters

3. Scenari applicativi

Energy monitoring and cost allocation in industrial distribution systems

Energy management and energy-saving analysis in commercial buildings

Substation automation and power quality monitoring

Real-time monitoring and protection of power parameters for critical equipment

Grid-connection monitoring of renewable energy systems (photovoltaic/wind power)

1. Installation and Commissioning Guide
2. Installation Preparation

Verify that the product model and specifications meet design requirements; inspect for no physical damage and complete accessories (including mounting screws and RS-485 terminal resistors)

Reserve sufficient space at the mounting location and avoid high temperature, humidity and strong electromagnetic interference

Perform all operations with power off to ensure safety

2. Passaggi di installazione
3. Cut a 96×96mm mounting hole on the distribution cabinet panel, insert the meter and fasten with screws
4. Cablaggio:

Power supply: Connect to 85-265V AC/100-300V DC power supply

Voltage circuit: Connect three-phase voltage (phase-to-phase or phase-to-ground) and ensure correct phase sequence

Current circuit: Connect current signal via CT and ensure correct CT polarity

Digital I/O: Connect DI to switch signals and RO to control circuits

Communication: Connect RS-485 interface to the monitoring system and install terminal resistors as required

3. Inspect wiring for correctness to avoid short circuits in voltage/current circuits
4. Commissioning Key Points
5. After power-on, check for normal display and no error messages
6. Parameter configuration:

CT ratio setting (per esempio., 1000/5UN)

Voltage range selection

Communication parameters (address, baud rate, parity)

Alarm threshold setting

Energy metering direction setting

3. Accuracy verification: Compare with a standard meter; error shall be within the Class 0.5S range
4. Test digital I/O functions to ensure normal signal response
5. Communication test: Read data via the Modbus protocol to confirm normal communication
6. Common Faults and Troubleshooting

1. Cross-Brand Alternative Models
2. Schneider In-Series Alternatives

2. Equivalent Models from Mainstream Brands

VII. Selection and Ordering Notes

1. Specify the model suffix (P/B/IB) when ordering for different functional configurations:

PM5350P: Standard Type with 31st-order harmonic analysis and complete communication functions

PM5350B: Basic Type with simplified functions and no harmonic analysis

PM5350IB: Introductory Type with basic measurement functions for simple monitoring scenarios

2. Confirm the CT input specification (1A or 5A) to match on-site CTs
3. Communication interface requirements: RS-485 as standard, Ethernet module optional
4. Accessory requirements: Mounting screws, RS-485 terminal resistors, communication cables, ecc.
5. Esempio: 10 units of METSEPM5350P with 5A CT input

VIII. Precauzioni per l'uso

1. Short circuit is strictly prohibited in voltage circuits and open circuit in current circuits; always cut off power before wiring
2. The CT ratio setting must match the actual CT to avoid proportional errors in measurement results
3. Use shielded twisted pair for communication lines to reduce electromagnetic interference
4. Regularly inspect wiring terminals to prevent measurement errors or communication faults caused by loose connections
5. Save parameters after software configuration to avoid data loss after power failure

Precise Selection and Cross-Brand Replacement Solution for Schneider PM5350

1. Selection Decision Overview (Quick Matching)

Based on four core demand dimensions, the following are priority recommendations for PM5350 series models and cross-brand alternatives to quickly identify the optimal solution:

1. Detailed Comparison of PM5350 Series Models (Basis for Precise Selection)

III. Customized Recommendation Schemes Based on Core Demands

1. Oriented to Energy Metering Accuracy Requirements

Class 0.5S (Regular Metering/Cost Allocation): All PM5350 series models meet the requirement; PM5350P (full functions) or PM5350B (high cost performance) è preferito

Class 0.2S (High-Precision Monitoring): Upgrade to PM5560 (Schneider in-series) or select cross-brand alternatives such as ABB E410 and Siemens PAC4200

MID Certification (Trade Settlement): PM5561 (Schneider) or ABB E600 (international brand) is a must; no domestic models with MID certification are available yet

2. Oriented to Harmonic Monitoring Requirements

31st-order Harmonic Analysis Required (Power Quality Diagnosis): PM5350P (the only supported model); alternatives include ABB E410, Siemens PAC4200 and Acrel ACR220EL

No Harmonic Analysis Required (Basic Monitoring): PM5350B/IB (lower cost); alternatives include Schneider PM5340, Delixi CDP6000 and Chint DTSU666-6S

3. Oriented to Communication and I/O Configuration Requirements

4. Scenario-Specific Recommendations

Industrial Distribution Systems

Recommendation: PM5350P + Ethernet module

Rationale: 4DI for circuit breaker status monitoring, 2RO for alarm output control, 31st-order harmonic analysis for motor load fault diagnosis, and Ethernet for SCADA system integration

Alternatives: ABB E410 (identical functions), Acrel ACR220EL (cost-effective domestic option)

Commercial Building Energy Management

Recommendation: PM5350B

Rationale: Class 0.5S energy metering for cost allocation, 2DI for air conditioning/lighting circuit monitoring, and RS485 for BMS system integration

Alternatives: Delixi CDP6000 (low-cost domestic option), Schneider PM5340 (more affordable in-series model)

Renewable Energy Grid-Connection Monitoring

Recommendation: PM5350P

Rationale: Bidirectional energy metering (generation/consumption), 31st-order harmonic analysis for grid-connection quality evaluation, and 4DI for photovoltaic inverter status monitoring

Alternatives: Siemens PAC4200 (international brand), Chint DTSU666-9S (domestic model with bidirectional metering support)

Simple Distribution Cabinet Monitoring

Recommendation: PM5350IB

Rationale: Core parameter measurement at the lowest cost, meeting basic power consumption monitoring needs

Alternatives: Chint DTSU666-6S (entry-level domestic model), Acrel ACR120EL (high cost performance)

III. Detailed Comparison of Cross-Brand Alternative Models (Function Matching Degree)

1. International Brand Alternatives (Performance-Oriented)

2. Domestic Brand Alternatives (Cost-Oriented)

1. Key Points for Selection and Replacement Implementation
2. CT Ratio Matching: All models support 1A/5A CTs; the actual CT ratio (per esempio., 1000/5UN) must be accurately entered in the parameter settings to avoid measurement errors
3. Specifiche di cablaggio:

Voltage circuit: Strictly prohibit short circuits and ensure correct phase sequence (A-B-C)

Current circuit: Strictly prohibit open circuits and ensure consistent CT polarity (P1 in, P2 out)

DI/RO: DI with built-in 24V power supply; RO contact rating of AC 250V/5A and DC 30V/5A

3. Communication Settings:

Baud rate: 9600/19200/38400bps (9600 as default)

Indirizzo: 1-247 (1 as default)

Terminal resistor: A 120Ω resistor must be installed at the end of the RS485 bus

4. Replacement Compatibility:

Mounting size: All recommended models are 96×96mm with an 88×88mm cutout for direct replacement

Electrical interface: Consistent voltage/current input range, enabling direct reuse of existing wiring

Functional differences: Key parameters such as harmonic order, number of DI/RO and communication protocols must be verified before replacement

1. Priority of Final Recommended Schemes
2. First Choice: PM5350P (Standard Type) – Full functions, suitable for over 90% of industrial and building application scenarios
3. Second Choice: PM5350B (Basic Type) – High cost performance, suitable for basic monitoring without harmonic analysis needs
4. Alternative Choice: PM5350IB (Introductory Type) – Lowest cost, suitable for simple distribution cabinet monitoring
5. Opzione di aggiornamento: PM5560/PM5561 (in-series) – Suitable for high-precision measurement or trade settlement applications
6. Cross-Brand Option: ABB E410 (international) / Chint DTSU666-9S (domestic) – Functionally matched with better cost performance