SL550 Advanced Solar PV Test Kit
Advanced Solar PV Kit
SL550 Advanced Solar PV Test Kit
The Di‑LOG SL550 Solar PV Test Kit is a complete, high-performance solution engineered for the installation, commissioning and maintenance of modern solar photovoltaic systems. Combining a precision solar irradiance survey meter, a CAT III 1500V DC True RMS Bluetooth clamp meter and professional MC4 test leads, the SL550 provides everything required for accurate solar PV testing in a single, portable kit.
Designed for both domestic and commercial PV applications, the SL550 enables comprehensive system verification by measuring solar irradiance, module temperature, DC voltage, AC/DC current, power and energy. The advanced survey functionality supports IEC 62446-1 compliant testing, the international standard for grid-connected PV system documentation, commissioning and inspection. This includes measurement of irradiance from 50 to 1400W/m², panel surface and underside temperature, roof pitch and array orientation, ensuring accurate system performance validation and correct installation alignment.

For electrical testing, the integrated 1500V DC clamp meter delivers True RMS accuracy with measurement capabilities up to 1500V DC and 1000A AC/DC, making it ideal for high-efficiency PV arrays and modern inverter systems. With Bluetooth connectivity, advanced diagnostic features such as power and energy analysis (kW, kVA, kVAR and kWh), harmonic measurement, inrush current capture and LowZ testing enable efficient fault finding, performance validation and troubleshooting of PV installations.
Supplied with CAT III 1500V rated MC4 solar test leads, the SL550 ensures safe and secure connections for open circuit voltage testing and system checks directly at the array. Built for durability and ease of use in demanding environments, the SL550 provides solar engineers with a reliable, all-in-one solution to meet modern PV testing requirements and industry standards

SL550 Advanced Solar PV Test Kit with Carry Case
SL550 Advanced Solar PV Test Kit Key Applications:
Electrical engineering | Power Energy Logging | Domestic, commercial & high efficiency solar thermal and solar PV installations
SL104 Key Features:
- Solar Irradiance Measurement to 1400W/m2: Indicating in real time how much solar power is available to convert into electricity.
- Inbuilt Cell Temperature Sensor: The inbuilt surface probe located on the base of the SL104 offers a quick indication of the surface cell
temperature. - External Cell Temperature Probe: The attachable external probe connects directly to the SL104 and offers a quick indication of the underside cell temperature of the panel.
- Inbuilt Magnetometer Compass: The inbuilt compass enables you to determine the roof direction to gain an accurate array direction.
- Roof Pitch Inclinometer: The integrated inclinometer will assist in determining an accurate pitch of the roof angle the array is intended to be mounted on helping calculate the efficiency of the array.
- Safety Rated: CAT III 1500V DC / CAT IV 600V safety rating
- True RMS Accuracy: Reliable readings on non-linear and distorted waveforms
- High Voltage Capability: Measures up to 1500V DC for High Efficiency PV Panels
- High Current Measurement: Measures up to 1000A AC/DC
- Full Colour Display: 6000-count screen for clear visibility
- Power Analysis: Measures kW, kVA and kVAR & Energy Measurement: kWh, kVAh and kVARh monitoring
- Harmonic Analysis: Identifies power quality issues
- LowZ Mode: Eliminates ghost voltage for accurate testing
- Inrush & Peak Capture: Detects start-up currents and transient events
- Smart Connectivity: Bluetooth app support with rechargeable Li-ion battery
Specifications
DL6415 Specifications |
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| Measurement | Range | Basic Accuracy |
| AC Current true RMS | 0.1A - 600.0A 600.1 - 1000A | ±2.5% + 8 dgts ±2.5% + 8 dgts |
| DC Current | 0.001A - 400.0A 400.1 - 1500A | ±2.0% + 8 dgts ±2.5% + 8 dgts |
| AC Voltage True RMS | 0.001V - 5.999V 6.00V - 59.99V 60.0V - 599.9V 600 - 1000V | ±1.2% + 5 dgts |
| DC Voltage | 0.1mV - 600.0mV 0.600V - 59.999V 60.00 - 599.99V 600.0 - 1499.9V 1500V | ±0.8% + 8 dgts ±0.5% + 8 dgts ±1.5% + 5 dgts |
| AC+DC Voltage True RMS | 0.001V - 5.999V 60.00V - 59.99V 60.0V - 599.9V 600 - 1000V | ±1.2% + 5 dgts |
| Low Z AC TRMS Ghost Voltage | 0.001V - 5.999V 60.00V - 59.99V 60.0V - 600.0V | ±3.0% + 40 dgts |
| AC Power kW/kVA/kVAR (Active, Apparent & Reactive) | 0.01 - 99.99 100.0 - 999.9 | 3.0% ± 10 dgts 3.0% ± 5 dgts |
| DC Power kW | 0.01 - 99.99 100.0 - 999.9 | 3.0% ± 10 dgts 3.0% ± 5 dgts |
| AC Energy kWh/kVAh/kVARh (Active, Apparent & Reactive) | 0.001 - 9.999 10.00 - 99.99 | 3.0% ± 10 dgts 3.0% ± 5 dgts |
| Power Factor | 0.20-1.00 (0.01) | 3.0% |
| Voltage Harmonics | 1 to 25 (20 - 75Hz) 1 to 8 (75 - 400Hz) | ±5.0% + 8 dgts ±6.0% + 8 dgts |
| Inrush Current (100ms) | 1000A | ±1.5% + 2 dgts (typical) |
| Resistance | 0.1Ω - 599.9Ω 0.600 - 5.999kΩ 6.000 - 59.99kΩ 60.00 - 599.9kΩ 0.600 - 5.999MΩ 6.00 - 60.00MΩ | ±1.2% ± 5 dgts ±2.0% ± 5 dgts ±2.5% ± 8 dgts |
| Capacitance | 0.01nF - 100mF | ±3.0% + 8 dtgs (typical) |
| Frequency | 0.01Hz - 10.00MHz | ±1.2% + 5 dgts (typical) |
| Duty Cycle | 10.0% - 90.0% (0.1%) | ±1.2% + 8 dgts |
| Temperature | -40°C - 1000°C -40°F - 1832°F | ±3.0 % of rdg + 5°C ±3.0 % of rdg + 9°F |
| Continuity | Audible <50Ω | |
| Diode Test | 1mA into 3.2V DC | N/A |
| Power supply | 1 x 7.4V Rechargeable Li-ion battery, 1200mAh | Included |
| Dimensions | 286x 99.8 x 49 mm | |
| Weight | 506g (exc battery) | |
SL104 Specifications |
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| Measurement | Range | Basic Accuracy |
| Irradiance | 50 - 1400W/m² | Typically within ± 5% of rdg or ± 1W/m² |
| Integrated Temperature Probe | -10°C to 50°C (14°F to 122°F) | |
| External Temperature Probe | -30°C to 100°C (-22°F to 212°F) | |
| Inclination Measurement | -90° to 90° | 0.1° Resolution |
| Compass Measurement | 0° to 360° | 1° Resolution |
| Power supply | 4 x 1.5V AA | Supplied |
| Dimensions | 176(H) x 70(W) x 40(D) mm | |
| Weight | About 390g | Including batteries |


