CERTEON PZEM-022

Contents

PZEM-022 AC Power Meter User Manual

Digital Voltmeter Ammeter Energy Monitor

1. Introduction

The CERTEON PZEM-022 AC Digital Power Meter is a panel-mounted electrical monitoring device designed for real-time measurement of key AC power parameters. It is suitable for single-phase AC systems within the 80-260 V range and is widely used in photovoltaic systems, inverter output monitoring, smart home distribution panels, and industrial power diagnostics. The unit integrates multi-parameter measurement in a compact housing with a full-view LCD display.

PZEM-022 AC Power Meter displaying voltage, current, power, energy, frequency, and power factor.
Figure 1: PZEM-022 AC Power Meter with its main display parameters.

2. Package Contents

  • PZEM-022 AC Power Meter ×1
  • Current Transformer (CT) - (Type depends on selected model: Split-core or Solid-core)

3. Specifications

ParameterSpecification
Working Voltage80~260V AC
Measuring Voltage Range80~260V AC
Rated Power22 kW (for 100A model) / 1100W (for 5A model)
Frequency Range45~65 Hz
Power Factor0~1 PF
Voltage Display Range80~260 V
Current Display Range0.00~99.99 A (for 100A model) / 0.00~5.00A (for 5A model)
Power Display Range0~22 kW (for 100A model) / 0~1100W (for 5A model)
Energy Display Range0~999 kWh
Display TypeFull-view LCD
BacklightWhite backlight, switchable on/off with memory function
MaterialReinforced nylon enclosure
DIY SuppliesElectrical
Battery IncludedNo
Dimension diagram of the PZEM-022 power meter showing length 89.6mm, width 49.6mm, and depth 24.25mm.
Figure 2: Dimension Diagram of the PZEM-022. Dimensions are approximately 89.6mm x 49.6mm x 24.25mm.
Mounting cutout size diagram for PZEM-022 showing a cutout of 87mm by 47mm with R3.5 corners.
Figure 3: Mounting Cutout Size. Recommended cutout is 87mm x 47mm with R3.5 corners.

4. Setup

4.1. Preparation

  • Ensure the power supply voltage is within 80-260 V AC.
  • Confirm that the connected load does not exceed the rated power (22 kW for 100A model, 1100W for 5A model) or current (100 A for 100A model, 5A for 5A model).
  • Disconnect the main power before wiring.

4.2. Wiring Diagram

Verify correct wiring according to the product terminal markings and ensure secure connections. The wiring method depends on the current rating of your meter and the type of Current Transformer (CT) provided.

Wiring diagram for PZEM-022 100A model with split core CT. Power supply output (AC80-260V 50/60Hz) connects to the meter's input terminals. The load is connected in series with the current transformer, which then connects to the meter's CT input terminals.
Figure 4: Wiring Diagram for PZEM-022 (100A model with Split Core CT). The split-core CT allows for direct clamping around the load wire without cutting.
Wiring diagram for PZEM-022 5A model. Power supply output (AC80-260V 50/60Hz) connects to the meter's input terminals. The load is connected directly to the meter's load output terminals.
Figure 5: Wiring Diagram for PZEM-022 (5A model). For lower current applications, the CT may be integrated or not required, with direct load connection.

WARNING: Risk of electric shock. The device operates at hazardous AC voltage levels. Always disconnect power before wiring or servicing.

5. Operating Instructions

5.1. Power On and Data Display

After completing the wiring, restore power to the system. The LCD will automatically power on and display real-time electrical parameters: voltage, current, active power, accumulated energy, frequency, and power factor.

5.2. Backlight Control

Use the designated button on the front panel to toggle the backlight on or off. The device retains the backlight setting after power interruption due to its memory function.

Backlight control instruction: short press the button to turn on or off the backlight. Status is saved after power-off.
Figure 6: Backlight Control. A short press of the button toggles the backlight, and its state is saved automatically.

5.3. Energy Reset

  1. Step 1: Long press the button for 5 seconds until the energy digits flash, then release the button.
  2. Step 2: If you short press the button again, the energy data will be cleared, and the flashing reset mode will exit.
  3. Step 3: If there is no button action within 5 seconds, the energy data will not be reset, and the reset mode will exit.

5.4. Power Alarm Value Setting

  1. Step 1: Long press the button for 3 seconds until the screen displays "SET CLr", then release the button to enter the power alarm value setting mode.
  2. Step 2: The power area displays the current alarm value, and the lowest digit starts flashing. You can short press the button to increase the value by 1. If no action is taken within 3 seconds, it automatically switches to the next digit. The setting method is the same for all digits.
  3. Step 3: After setting, long press the button for more than 5 seconds to automatically save and exit. The active power threshold setting range is 0.0~22kW.

5.5. Data Reading

Read voltage, current, active power, accumulated energy, frequency, and power factor directly from the LCD screen. Ensure stable load conditions for accurate measurement.

6. Maintenance

  • Store the device in a dry, dust-free environment.
  • Avoid mechanical shock or vibration during transport and storage.
  • Clean the enclosure with a dry, soft cloth. Do not use solvents or corrosive cleaning agents.
  • Do not operate the device beyond the specified voltage and current ranges.
  • Installation must comply with applicable local electrical regulations and standards.

7. Troubleshooting

  • If abnormal display or malfunction occurs, disconnect power immediately and contact technical support.
  • Ensure all wiring connections are secure and correct according to the wiring diagrams.
  • Verify that the load does not exceed the meter's rated capacity.

8. User Tips

  • The full-view LCD display is bright and easy to read from various angles, making monitoring convenient.
  • Utilize the backlight memory function to maintain your preferred display brightness even after power cycles.

9. Frequently Asked Questions (FAQs)

Q1: Can this meter be used in photovoltaic (PV) systems?
A1: Yes, it is optimized for PV applications and effectively handles high-frequency interference.
Q2: Will the backlight setting be saved after a power outage?
A2: Yes, the meter retains the backlight setting automatically after power is restored.
Q3: How is this meter installed?
A3: It features a triple-clip design for fast, secure, and tool-free panel installation.

10. Support

For technical assistance, bulk orders, or customized products, please contact us:

  • WhatsApp: +86-19542723588
  • Email: celiachen008@gmail.com
Contact information for CERTEON including WhatsApp and Email.
Figure 7: Contact Information for CERTEON.

© 2024 CERTEON. All rights reserved.

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