Seaward PV:1525-IV – Advanced 1500V PV Tester with Integrated IV Curve Tracing
The Seaward PV:1525-IV is a next-generation photovoltaic installation tester designed for solar professionals who need more than standard commissioning tests. Building on the proven capabilities of the Seaward PV:1525, the PV:1525-IV introduces advanced IV curve tracing functionality, enabling installers and O&M engineers to perform both electrical safety testing and detailed PV performance analysis from a single handheld instrument.
Designed for modern residential, commercial and high-voltage rooftop solar installations, the PV:1525-IV supports systems up to 1500V DC and 25A DC, making it ideal for today’s larger and more demanding PV arrays. With integrated IV curve tracing, users can quickly verify module and string performance, identify faults, detect performance deviations and compare results against expected operating conditions — all directly on site.
The Seaward PV:1525-IV simplifies solar commissioning by combining essential PV tests with intuitive IV curve analysis in one streamlined workflow. This reduces the need for multiple instruments while helping installers deliver accurate, compliant and professional system handovers.
Integrated IV Curve Tracing for Advanced PV Performance Testing
Unlike the standard Seaward PV:1525, the PV:1525-IV includes graphical IV curve tracing displayed directly on screen, allowing users to assess the true operating performance of solar modules and strings during commissioning and maintenance.
The IV curve tracing capability provides:
- Graphical IV curve display directly on the tester
- Maximum power point voltage (Vmpp) calculation
- Maximum power point current (Impp) calculation
- Fill factor analysis
- Detailed PV string performance verification
- Early identification of underperforming modules or installation issues
This makes the PV:1525-IV an ideal solution for solar installers, commissioning engineers and O&M professionals who require deeper diagnostic insight beyond standard electrical testing.
Designed for Modern 1500V Solar Installations
As solar installations continue to increase in voltage and capacity, traditional 1000V PV testers may no longer provide sufficient capability. The Seaward PV:1525-IV has been specifically developed for modern high-voltage solar systems, supporting:
- Open-circuit voltage testing up to 1500V DC
- Short-circuit current testing up to 25A DC
- Insulation resistance testing up to 1500V DC
- Earth continuity and resistance testing
- String performance testing up to 37.5kW
Its high-capacity design makes it suitable for residential rooftop systems, commercial PV installations and utility-scale applications.
Faster Solar Commissioning with a Single Test Platform
The Seaward PV:1525-IV combines multiple solar test functions within one compact handheld unit, helping reduce equipment requirements and improve testing efficiency on site.
Features include:
- Automated test sequences for DIN EN 62446-1 / VDE 0126-23-1 compliance
- Customisable test workflows
- Manual diagnostic testing mode
- Intuitive colour display with illuminated navigation buttons
- Structured onboard memory storage
- Bluetooth connectivity for mobile reporting and data transfer
- Wireless firmware updates via the PV:Sync Mobile app
With integrated Bluetooth®, test results can be transferred directly to the PV:Sync Mobile app for streamlined reporting and documentation. Results can also be exported to SolarCert software for advanced analysis, STC comparison and professional certification reporting.
Dynamic Surge Suppression for Safer High-Power Testing
A key advantage of the Seaward PV:1525-IV is its integrated Dynamic Surge Suppression System, developed to actively manage inrush current during short-circuit testing.
High inrush currents can place stress on both PV systems and test instruments, particularly on high-capacity arrays. The PV:1525-IV monitors and suppresses inrush current automatically, helping installers safely perform testing without risking damage to the tester or connected equipment.
This feature is particularly valuable when commissioning large modern PV arrays operating at higher irradiance levels.
Built for Global Solar Conditions
The PV:1525-IV has undergone field testing in demanding high-irradiance environments including Malaysia, Panama and the Mojave Desert, demonstrating reliable performance across a wide range of operating conditions.
Its rugged, lightweight handheld design includes:
- CAT III 1500V safety rating
- Rechargeable lithium-ion battery
- 3.5” colour display
- IP40 protection
- Approximate weight of only 1kg
Key Features of the Seaward PV:1525-IV
- Integrated IV curve tracing functionality
- 1500V DC photovoltaic testing capability
- 25A DC short-circuit current testing
- Graphical IV curve display
- Maximum power point and fill factor analysis
- Automated commissioning test sequences
- Bluetooth data transfer and mobile reporting
- Dynamic Surge Suppression System
- Compatible with PV:Sync Mobile and SolarCert software
- Suitable for residential, commercial and utility-scale solar systems
Why Choose the Seaward PV:1525-IV?
If you already know the Seaward PV:1525, the PV:1525-IV takes solar commissioning a step further by adding advanced IV curve tracing and performance diagnostics within the same easy-to-use platform.
For installers and O&M engineers looking to combine electrical safety testing, performance verification and professional reporting in one instrument, the Seaward PV:1525-IV delivers a complete photovoltaic testing solution for modern 1500V solar systems.