Phase sequence tester TKF-12 with test declaration WMGBTKF12

Phase Sequence Checker with Sonel TKF-12 – Reliability and Safety

Phase sequence tester Sonel TKF-12 is a practical tool that will find application both in the work of a professional installer and in the workshop of a DIY enthusiast. The device is designed to check 3-phase electrical installations, allowing for quick and safe verification of the phase sequence and motor rotation direction. This minimizes the risk of damage to connected devices and ensures proper system operation. The tester is particularly useful when starting electric motors, where an incorrect phase sequence can lead to their damage or malfunction.

Functionality and operating range

TKF-12 offers a wide range of operating voltages – from 160 to 690 V AC at a frequency of 10…70 Hz. LED light signaling indicates the presence of voltage in each phase, as well as its sequence. Additionally, the tester allows you to check the symmetry of interphase voltages – the absence of voltage in one of the phases is signaled by the extinction of the corresponding LED. The built-in motor rotation direction test function (wired indication) allows you to ensure that the motor will rotate in the desired direction before starting it. This simple solution avoids potential problems and costly repairs.

Construction and safety of use

The tester is characterized by an ergonomic design and a solid housing with a protection degree of IP42, which ensures its durability and resistance to mechanical damage and external factors. The device has double insulation in accordance with PN-EN 61010-1, guaranteeing a high level of safety during use. Internal thermal protection protects the tester from overheating if left under voltage for too long – the device then automatically shuts off. The tester is powered directly from the measured installation, eliminating the need for batteries. The set includes pointed probes (red, black, yellow) and a black 1 kV 20 A crocodile clip, as well as a declaration of conformity.