UNI-T UT673E Photovoltaic Module MPPT Tester 150V 2000W Solar Panel Multimeter

Specifications:

• Operating Voltage Range: 12V DC to 150V DC
• Operating Current Range: 0A DC to 20A DC
• Maximum Power Capacity: 2000W Max
• Measurement Parameters: Maximum Power (Pmax), Voltage at Pmax (Vmp), Current at Pmax (Imp), Open Circuit Voltage (Voc), Short Circuit Current (Isc)
• Test Mode Options: Auto MPPT Test / Manual MPPT Test
• Manual Test Interval: $\ge$ 30 seconds
• Display: Large multi-parameter LCD display with backlight
• Built-in Protections: Over-temperature protection, Over-voltage protection, Over-current protection, Reverse polarity protection
• Power Source: Powered directly by the solar panel under test (no internal batteries required)
• Operating Temperature: 0°C to 40°C

Unlock New Capabilities

• Past Projects (Prerequisites) If you've already experimented with basic digital multimeters or clamp meters to check your solar panels, you know how tedious it is to manually calculate wattage or find the true maximum power point under varying sunlight.
• Feature Upgrade (What This Unlocks) This UT673E unlocks instant, one-click MPPT performance testing. It allows you to troubleshoot underperforming panels, verify manufacturer wattage claims in real-time, and accurately match solar strings for optimal charge controller efficiency—without requiring any external power or manual math.
• Effort Level & Minimum Hardware
• Effort Level: Intermediate

Included in the Box:

• 1× UNI-T UT673E MPPT Tester
• 1× MC4 Test Cable Set
• 1× Alligator Clip Test Cable Set
• 1× User Manual

Frequently Asked Questions (FAQ)

• What is the maximum power capacity of the UNI-T UT673E?
  The UT673E can measure photovoltaic modules up to 2000W.
• What is the maximum DC voltage input limit?
  The maximum rated open-circuit voltage ($V_{oc}$) for the unit is 150V DC.
• What parameters does the UT673E display on screen?
  It simultaneously displays Maximum Power ($P_{max}$), Maximum Power Voltage ($V_{mp}$), Maximum Power Current ($I_{mp}$), Open Circuit Voltage ($V_{oc}$), and Short Circuit Current ($I_{sc}$).
• Does the UT673E require an external power supply or batteries?
  It is powered directly by the solar panel being tested when adequate irradiance is present, though internal battery support handles standby screen operations.
• What is the difference between AUTO and MANUAL mode on the UT673E?
  AUTO mode automatically sweeps and refreshes maximum power measurements upon connection, while MANUAL mode allows users to trigger a test on demand with a minimum 30-second cooling interval between tests.
• Can I use the UT673E on solar arrays connected to an active inverter?
  No, the solar panel or string must be disconnected from external loads or inverters prior to testing.
• What happens if I connect the solar panel with reverse polarity?
  The tester includes reverse polarity protection and warning indicators; however, correct connection is always advised to prevent stress on test leads.
• Is the UNI-T UT673E suitable for high-current bifacial panels?
  Yes, provided the short-circuit current ($I_{sc}$) does not exceed the device's maximum current limit (typically up to 20A) and total wattage remains under 2000W.
• Why is a 30-second interval required between MANUAL tests?
  The internal electronic load generates thermal energy during peak power sweeps. The 30-second delay prevents internal thermal buildup.
• Does the UT673E have over-temperature protection?
  Yes, it features integrated over-temperature safety shutdown to protect internal components from thermal stress during heavy testing sessions.
• Can I test a string of multiple panels connected in series?
  Yes, as long as the combined string open-circuit voltage ($V_{oc}$) is strictly below 150V DC and maximum power is under 2000W.