Elecnova PD194Z-E14 - User Manual

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Overview

Elecnova Rail-Mounted Multi-Circuit Power Meter (PD194Z-E14)

Elecnova Rail-Mounted Multi-Circuit Power Meter (PD194Z-E14)

The Elecnova PD194Z-E14 is a rail-mounted multi-circuit power meter designed for comprehensive monitoring of electrical grids. It is capable of measuring parameters for multiple three-phase or single-phase power circuits, making it suitable for a wide range of applications. The meter utilizes external current transformers for current measurement and features a modular design, allowing users to select functions that meet specific field requirements.

Function Description

The PD194Z-E14 main module (required) is designed to measure grid parameters for up to four three-phase circuits or twelve single-phase circuits. These parameters include:

Voltage: Phase voltage, wire voltage, and overall voltage.
Current: Measured via external current transformers.
Power: Phase active power, total active power, phase reactive power, total reactive power, phase apparent power, and total apparent power.
Frequency: Grid frequency.
Energy: Input/output active energy (0.5S accuracy) and input/output reactive energy (2 accuracy). It also supports multi-rate active energy measurement (0.5S accuracy).
Demand: Provides demand values for various parameters.
Extreme Value: Records extreme values for measured parameters.
Harmonics: Measures total harmonic distortion (A grade) and 2nd-31st harmonic distortion (A grade).
Unbalance: Monitors voltage and current unbalance.
Power Factor: Measures phase frequency factor and total power factor.

The meter includes one RS485 communication interface as standard for data transmission.

Optional modules enhance the meter's functionality:

EK1 Module: This module provides four digital inputs and two relay outputs, allowing for additional monitoring and control capabilities.
EC1 Module: This communication module offers an additional RS485 interface with Modbus-RTU protocol support, expanding communication options.

Important Technical Specifications

Working Environment Conditions:

Working Temperature: -20°C to 70°C
Storage Temperature: -40°C to 85°C
Relative Humidity: ≤95%RH, non-condensing
Altitude: ≤2500m
IP Degree: IP20

Power Supply:

Rated Range: AC/DC (80-270)V
Consumption: <5VA
Withstand Voltage: ≥2kV

Voltage Input:

Range: 3×220V/380V
Resolution: 0.1 V
Impedance: ≥1.7 MΩ/phase
Consumption: ≤0.1 VA /phase
Overload: Continuous: 1.2Un; Instantaneous: 2Un/10s
Frequency: 45-65 Hz

Current Input:

Range: External current transformer (refer to 7.5 current transformer for details).

Accuracy:

Voltage/Current/Frequency: 0.2
Active Power (Phase/Total): 0.5
Reactive Power (Phase/Total): 0.5
Apparent Power (Phase/Total): 0.5
Power Factor (Phase/Total): 0.5
Total Harmonic Distortion/2-31 Harmonic Distortion: A grade
Input/Output Active Energy: 0.5S
Input/Output Reactive Energy: 2
Multi-rate Active Energy: 0.5S

Pulse Output:

Pulse Width: 80ms ±20%
Max Voltage of Port: 35V
Max Current of Port: 10mA
Pulse Frequency: ≤10Hz

Communication Interface (Main Module):

Physical Interface: RS485
Communication Speed: Max 9600bps
Physical Protocol: Modbus-RTU
Isolation Voltage: 4000 V AC

EK1 Module (Digital Input/Output):

Relay Output Capacity: 5A/250 VAC; 5A/30 VDC
Isolation Voltage (Contact to Coil): 2000 VAC / min
Action Time: 10 ms max
Release Time: 5 ms max
Mechanical Life: 10^6 times
Digital Input Sensitivity: Support DC 15V power, turn-on: ≤10kΩ, turn-off: ≥15KΩ
Digital Input Isolation Voltage: 4000 V AC
Scanning Time: 1 ms
Filtering Time: 30 ms

EC1 Module (Communication):

Physical Interface: RS485
Communication Speed: Up to 9600bps
Physical Protocol: Modbus-RTU
Isolation Voltage: 2500 V AC

Insulation:

Signal, Power Supply, Output Terminals to Case Resistance: >100MΩ
Withstand Voltage: ≥2kV
EMC: ≥Class III

Usage Features

The PD194Z-E14 is designed for rail-mounted installation, specifically adopting DIN 35 rail installation, which facilitates easy integration into existing electrical panels and enclosures. The modular design allows for flexible configuration, enabling users to add or remove EK1 and EC1 modules based on their specific monitoring and communication needs. This adaptability makes it suitable for various applications requiring multi-circuit power measurement. The device supports Modbus-RTU protocol over RS485, ensuring compatibility with a wide range of industrial control systems and SCADA platforms for data acquisition and remote monitoring. The ability to measure a comprehensive set of electrical parameters, including harmonics and unbalance, provides detailed insights into power quality.

Maintenance Features

While the manual does not explicitly detail maintenance procedures, the robust technical specifications suggest a design for long-term reliability in industrial environments. The wide operating temperature range and high isolation voltages contribute to its durability. The modular design could potentially simplify maintenance or upgrades by allowing individual modules to be replaced if necessary, rather than the entire unit. The mechanical life of the EK1 module's relay outputs (10^6 times) indicates a long operational lifespan for these components. The IP20 degree of protection suggests it is protected against solid objects larger than 12.5mm but not against water, implying that installation in a dry, protected environment is crucial for optimal performance and longevity. Regular checks of the external current transformers and communication connections would be standard maintenance practices for ensuring accurate and reliable operation.

Elecnova PD194Z-E14 Specifications

General

Brand	Elecnova
Model	PD194Z-E14
Category	Measuring Instruments
Language	English