Overview
The GSCETE CM550A is a professional-grade, high-performance digital clamp meter specifically engineered for High Voltage (HV) environments. While most meters fail at 1000V, the CM550A safely measures up to 1700V DC, making it the ideal choice for modern large-scale solar string inverters. Unlike entry-level models, this meter features DC Current clamping, allowing you to measure the amperage coming directly from solar panels or batteries without cutting any wires.
Key Features
Solar-Ready High Voltage: Safely test DC systems up to 1700V—perfect for commercial solar installations.
AC/DC Current Clamping: Measures both AC and DC current up to 600A using the induction jaws.
True RMS Accuracy: Provides precise readings even on distorted waveforms from VFDs and UPS inverters.
LowZ Mode: Eliminates “ghost voltages” caused by capacitive coupling in long wire runs.
Built-in Flashlight & Backlight: Work safely in dark distribution boards or under solar mounting structures.
Comprehensive Testing: Includes Temperature, Capacitance, Frequency, and NCV detection.
Technical Specifications
| Feature | Specification Range |
| DC Voltage | Up to 1700V (High Voltage Protection) |
| AC Voltage | Up to 1000V |
| AC/DC Current | 60A / 600A (True RMS) |
| Resistance | Up to 60MΩ |
| Capacitance | Up to 60mF (Great for motor starters) |
| Temperature | -40°C to 1000°C |
| Safety Rating | CAT III 1000V / CAT IV 600V |
| Display Counts | 6000 Counts (High Resolution) |


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