The HK888E Solar PV Clamp Meter is a high-performance, multi-functional testing instrument specifically designed for photovoltaic systems and high-voltage electrical environments.

With measurement capabilities up to 2000A current and 2000V DC voltage, it is ideal for engineers, installers, and maintenance professionals working in solar power systems, industrial electrical systems, and high-energy applications.

Equipped with True RMS measurement, VFD compatibility, LoZ mode, and non-contact voltage detection (NCV), the HK888E ensures accurate readings even in complex and noisy environments.

Its large jaw opening (Ø60.5mm), wide measurement range, and intelligent functions such as inrush current testing, peak hold, and MAX/MIN recording make it a reliable tool for both troubleshooting and system diagnostics.

Designed with safety and usability in mind, the meter complies with CAT III 1500V / CAT IV 1000V standards, making it suitable for demanding field applications.

Features

• High voltage measurement up to 2000V DC and 1500V AC
• High current capacity up to 2000A AC/DC and 3000A with flex clamp
• True RMS measurement for accurate readings in non-linear loads
• Large jaw opening (Ø60.5mm) for thick cables in PV systems
• LoZ function to eliminate ghost voltage interference
• VFD measurement capability for variable frequency drives
• NCV detection (>30V) and live wire recognition (>80V)
• Inrush current and peak hold functions for transient analysis
• Backlight display and built-in flashlight for low-light environments
• Dual-color housing design for enhanced durability and usability

Technical Specifications

Applications

Photovoltaic systems (panel to inverter isolation)
MPPT multi-string disconnection
High-voltage DC transmission and distribution systems
Commercial and industrial solar installations
Outdoor renewable energy systems

FAQ

1. What is the HK888E Solar PV Clamp Meter used for?

The HK888E Solar PV Clamp Meter is designed for testing and troubleshooting photovoltaic systems, high-voltage DC circuits, industrial electrical systems, and renewable energy installations. It can measure AC/DC voltage, AC/DC current, resistance, capacitance, frequency, temperature, and other key electrical parameters required for field diagnostics.

2. Can the HK888E measure up to 2000V DC?

Yes. The HK888E supports DC voltage measurement up to 2000V, making it suitable for high-voltage solar PV applications such as string testing, inverter-side inspection, and PV system maintenance. Operators should always follow proper electrical safety procedures when working with high-voltage DC circuits.

3. What is the maximum current measurement range of the HK888E?

The HK888E can measure up to 2000A AC/DC with the built-in clamp. With an optional flexible current clamp sensor, it can measure AC current up to 3000A, which is useful for large cables, busbars, and high-current industrial applications.

4. Is the HK888E suitable for solar PV system maintenance?

Yes. With 2000V DC voltage measurement, 2000A AC/DC current capacity, True RMS measurement, LoZ mode, NCV detection, and a large Ø60.5mm jaw opening, the HK888E is suitable for solar installers, maintenance engineers, and electrical technicians working on commercial and industrial PV systems.

5. Why is True RMS important in a solar PV clamp meter?

True RMS helps provide more accurate readings when measuring non-linear loads or distorted waveforms. This is important in PV systems, inverter circuits, variable frequency drives, and industrial electrical environments where standard averaging meters may not provide reliable results.

6. What is the LoZ function used for?

The LoZ function provides low-impedance voltage measurement, helping reduce the influence of ghost voltage or induced voltage. This is useful when checking whether a circuit is truly energized, especially in complex electrical panels or long cable runs.

7. Does the HK888E support VFD measurement?

Yes. The HK888E supports VFD measurement for AC voltage and AC current. This makes it suitable for testing variable frequency drive systems, motors, pumps, and industrial control equipment where frequency-converted signals are present.

8. What safety category does the HK888E comply with?

The HK888E is rated CAT III 1500V / CAT IV 1000V, making it suitable for demanding electrical field applications. Users should select the correct test leads and accessories, wear proper PPE, and follow local electrical safety standards when testing high-voltage equipment.

9. What is the jaw opening size of the HK888E?

The HK888E has a large Ø60.5mm jaw opening, allowing users to clamp around thick cables commonly used in solar PV systems, power distribution cabinets, and industrial electrical installations.

10. Can the HK888E detect live wires without direct contact?

Yes. The HK888E includes NCV detection for voltage above 30V and live wire recognition above 80V. These functions help users perform quick preliminary checks, but they should not replace direct measurement when accurate verification is required.

11. Does the HK888E have inrush current and peak hold functions?

Yes. The HK888E supports inrush current testing and peak hold, making it useful for capturing transient current changes during equipment startup, motor operation, inverter switching, and other dynamic electrical conditions.

12. What accessories are included with the HK888E?

Standard accessories include test leads, a hard carrying case, temperature probe, and user manual. Optional accessories include MC4 PV plugs, crocodile clips, and a flexible current clamp, depending on the application requirements.

13. Who should use the HK888E Solar PV Clamp Meter?

The HK888E is suitable for solar PV installers, electrical engineers, maintenance technicians, industrial electricians, and renewable energy service teams. Because it is designed for high-voltage electrical environments, it should be used by trained professionals familiar with electrical safety practices.

14. Can the HK888E be used in outdoor renewable energy projects?

Yes. The HK888E is suitable for outdoor solar and renewable energy applications, including PV system inspection, string current checking, inverter-side testing, and electrical troubleshooting. For outdoor use, users should ensure the meter, test leads, and accessories are kept clean, dry, and within the specified operating conditions.

15. Why choose the HK888E for photovoltaic testing?

The HK888E combines high-voltage DC measurement up to 2000V, high-current measurement up to 2000A, True RMS accuracy, VFD capability, LoZ mode, NCV detection, inrush current testing, and a large jaw opening. It provides a practical and reliable testing solution for solar PV systems and high-energy electrical applications.

HK888 Series Clamp Meters

Four Models for Different Measurement Needs

The HK888 series combines True RMS measurement, a 6000-count display, and voltage ranges up to 2000V DC and 1500V AC. Each model offers a distinct combination of measurement functions and design features, from phase sequence testing to flexible-coil current measurement and a premium waterproof design.

HK888A — 2000A AC Clamp Meter with Phase Sequence Testing

The HK888A combines 2000A AC current measurement with phase sequence testing, providing a practical feature set for electrical installation and maintenance work.

Key features

• Phase sequence testing.
• AC current measurement up to 2000A.
• Frequency measurement up to 10MHz.
• Duty cycle measurement from 0.1% to 99.9%.
• Inrush current measurement and peak hold.
• 60.5mm jaw opening.

HK888B — 2000A AC/DC Clamp Meter with 3000A Flexible-Coil Support

The HK888B offers versatile current measurement with support for an optional 3000A flexible coil. VFD testing and AC+DC current measurement extend its capabilities for electrical maintenance applications.

Key features

• AC and DC current measurement up to 2000A.
• Support for an optional 3000A flexible current coil.
• AC+DC current measurement up to 2000A.
• VFD testing for AC voltage and AC current.
• Temperature measurement up to 1300°C / 2372°F.
• NCV detection and live wire recognition.
• 60.5mm jaw opening.

HK888D — 2000A AC/DC Clamp Meter for General-Purpose Testing

The HK888D brings together current, voltage, temperature, frequency, and duty cycle measurement in a general-purpose instrument. Its broad measurement range makes it a practical choice for everyday electrical testing and maintenance.

Key features

• AC and DC current measurement up to 2000A.
• Temperature measurement up to 1300°C / 2372°F.
• Frequency measurement up to 10MHz.
• Duty cycle measurement from 0.1% to 99.9%.
• NCV detection and live wire recognition.
• Inrush current measurement and peak hold.
• 60.5mm jaw opening.

Features Shared Across the Series

Choose the Model That Fits Your Application

3000A measurement requires a compatible external flexible current coil. Waterproof use of the HK888E must follow the conditions specified in its product documentation.