Fluke 5520A — 1020 V / 20 A Multi-Product Calibrator Multi Function Calibrator

The pre-owned Fluke 5520A combines precision sources for voltage, current and resistance in a single chassis that reaches ±1020 V, ±20 A and 100 MΩ. With typical 11 ppm DC accuracy and wide-band AC outputs to 500 kHz, it delivers a 4∶1 test-uncertainty ratio when calibrating 6½-digit bench meters, handheld DMMs, clamp meters (via external current booster) and power analyzers. Programmable harmonics, phase control and built-in MET/CAL® procedures slash setup time, while GPIB/RS-232 connectivity lets the calibrator drop straight into automated systems. Supplied fully tested, freshly calibrated and firmware-current, each unit provides traceable Fluke performance and immediate cost savings compared with new equipment.

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Looking for other models? Our inventory changes daily—ask for the latest list of spectrum analyzers and RF equipment.

TESTRO Advantages

1. Laboratory-Verified Performance – Every unit ships with an ISO/IEC 17025 calibration certificate (TESTRO Certified) tied to its serial number.

2. Full Internal Transparency – High-resolution teardown photos plus a live video test (gain-linearity, noise-floor, spurious response); recordings are stored for the product’s lifetime.

3. Warranty & Technical Support – One-year warranty and weekday remote assistance from the in-house engineering team for both software and hardware issues.

4. Secure, Rapid Shipping – Aviation-grade flight case with triple-layer anti-vibration foam and shock/tilt indicators; priority DHL delivery in 3–5 days to major destinations.

5. Flexible Payment Options – Accepts T/T, wire transfer, credit card.

6. On-Site Inspection Welcome – Customers may visit the Shenzhen warehouse and refurbishment line to view calibration benches, burn-in racks, and inventory.

Founded in 2017 and headquartered in Shenzhen, TESTRO Electronics LLC focuses on the secondary sale and flexible rental of high-end electronic test instruments. The team counts 30 employees and operates a 1,500 m² warehouse and inspection center in Qianhai, Shenzhen.

Industry Background & Resource Sourcing

Over the past two decades, rapid advances in China’s radio-frequency sector have shortened production-line refresh cycles to roughly 3–5 years. Leveraging long-term partnerships with equipment OEMs, research institutes, and calibration labs, TESTRO acquires traceable, well-maintained decommissioned or replacement units. Every instrument undergoes a five-step technical check and third-party calibration before entering stock, ensuring reliable performance data.

Core Services & Delivery Process