General
Rated current	100 A AC / 150 A DC – 1000 A AC / 1400 A DC

The PAC26 current transformer from Chauvin Arnoux is a measuring instrument for capturing direct and alternating currents in industrial and commercial applications. It belongs to the PAC model series and is suitable for measurements ranging from low to high currents, with measurement possible under both alternating and direct voltage conditions. The device is designed for use in the electrical and industrial sectors, where precise current measurement is required, for example, in monitoring energy consumption, commissioning installations, or maintaining electrical systems.

Current transformer
The PAC26 is a current transformer that can be installed without interrupting the current-carrying conductor. It encloses the conductor or busbar to be measured and converts the flowing current into a proportional output signal. The jaw has an encircling diameter of 39 mm, allowing it to enclose two smaller busbars, each 25 mm wide or 50×5 mm in size. This versatility enables use in various installations where different cable and busbar sizes are present.

Functions and equipment in detail
The device offers two measurement ranges defined by a ratio of 1 A/10 mV and 1 A/1 mV. This allows flexible adaptation to different measurement tasks: the 1 A/10 mV range is suitable for more precise measurements in the low current range, while the 1 A/1 mV range is intended for higher currents. Typical accuracy is ≤ 1.5 % for the 1 A/10 mV range and 4 % for the 1 A/1 mV range. An integrated automatic DC zero adjustment (ZeroDC) improves measurement accuracy, especially for direct current measurements, by automatically correcting offset deviations.

Technology explained simply
The PAC26 converts the flowing current into a proportional output signal in the form of direct or alternating voltage. The output signal is delivered via a robust cable with 4 mm insulated connectors, ensuring a secure and reliable connection to measuring instruments or control systems. The output signals are compatible with standard measuring instruments equipped with corresponding inputs. The selectable standby mode enables an energy-saving function, reducing power consumption in idle state without affecting functionality.

Compatibility and accessories
The current transformer is designed for use with measuring instruments that support direct and alternating voltage inputs with 4 mm connectors. It is used in industrial and commercial installations where continuous current monitoring is required. Compatibility with various cable and busbar sizes increases its applicability in different installation scenarios.

Installation and mounting
Installation is performed without interrupting the current-carrying conductor. The jaw is simply placed around the conductor or busbar to be measured. Mounting requires no special tools, as the jaw can be mechanically opened and closed. Connection to the measuring instrument is made via the supplied cable with 4 mm connectors.

Operational advantages
The PAC26 offers high measurement accuracy across two different ranges, making it flexible for various requirements. The automatic zero adjustment reduces measurement errors, especially during direct current measurements. The robust design with insulated connectors ensures secure and reliable signal transmission. The selectable standby mode reduces energy consumption in idle state, which is beneficial in energy-efficient installations. The device is designed for use in the electrical and industrial sectors, where reliability and precision are critical.

Scope of delivery
The scope of delivery includes the PAC26 current transformer and the operating instructions.