Chauvin Arnoux CA6550 10 kV Insulation Tester

Overview

The Chauvin Arnoux CA6550 is a professional, programmable insulation tester (megohmmeter) designed for high-voltage insulation integrity verification. It supports test voltages from 40 V up to 10 kV, and measures insulation resistance over a range from 10 kΩ to 25 TΩ, making it suitable for demanding electrical installation tests, preventive maintenance, quality assurance, and troubleshooting. Constructed with a robust, site-proof casing and carrying features that enable both field and laboratory usage, CA6550 is engineered to deliver reliable, reproducible results even under challenging environmental conditions.

Key Features

• Measurement of insulation resistance from 10 kΩ to 25 TΩ at 10 kV fixed test voltage, enabling detection of very high insulation levels.

• Wide range of test voltages: fixed & programmable, 40 V up to 10 kV, with fine increments in low and high ranges.

• Multiple test modes including fixed voltage, step voltage, ramp voltage, also special modes “burning”, “early-break”, and I-limit, useful for non-destructive testing and ageing diagnostics.

• Advanced ratio diagnostics: Polarization Index (PI), Dielectric Absorption Ratio (DAR), Dielectric Discharge (DD), and ΔR (ppm/V) allow assessment of insulation condition and ageing.

• Real-time display of test curves: R(t)+U(t), I(t), I(U) graphs displayed on a large, backlit, graphic LCD for immediate insight into insulation behaviour.

• Several digital filters for enhanced stability in measurement when noise or interference is present.

• Ability to compute and display resistance at a reference temperature, compensating for ambient temperature variations.

• Large internal memory (≈80,000 test records) with date/time stamping; DataView software support to transfer, analyse and generate reports.

• USB communication via an optically-isolated port, maintaining safety during data transfer.

• NiMH rechargeable battery with ability to operate also on mains; ensures mobile or remote usage.

• Robust safety and compliance: meets IEC 61557-1 & -2, IEC 61010 safety standards; CAT IV 1000 V rating for accessories; protective, IP54 rated enclosure.

Applications

The CA6550 is ideal for electrical engineers, maintenance and inspection teams, and procurement specialists working in:

• Rotating machinery (motors, generators) especially when rated at or above 12 kV.

• Medium and high voltage transformer and cable insulation testing.

• Power Transmission & Distribution (T&D) network maintenance: overhead lines, underground cables, substations.

• Surge suppressors, spark arresters, insulated transducers, high-voltage generator systems.

• Manufacturing quality control of electrical equipment where insulation integrity is critical.

• Preventive maintenance programmes where trending of insulation resistance (via PI, DAR, DD) is essential to predict degradation.

• Field service and commissioning work: site-proof design permits onsite inspections and commissioning in harsh environments.

Technical Specifications