The ST4200 Partial Discharge Detector offers comprehensive partial discharge (PD) detection. It also enables seamless system integration for motor production testing when paired with the SW2001 High Voltage Multiplexer. Furthermore, the ST4200's PD detection uses high-frequency CTs which mitigate noise interference common to production lines. Such noise on production lines make PD detection using a microwave antenna often difficult, and at times, nearly impossible.

Discover latent insulation defects in motor windings with the AC PD test (IEC 60270 and IEC 60034-27-1 compliant) and surge PD test (IEC 61934 Ed. 2 and IEC60034-27-5 compliant). The ability to select between the two types of PD tests allows you to customize your inspection process to the specific needs of each motor, maximizing the detection of latent failures.

Partial discharge testing on production lines with a microwave antenna is highly susceptible to noise interference. Using a high-frequency CT minimizes noise, simplifies installation by reducing the need for precise positioning, and thus prevents measurement errors. Unlike the antenna method which cannot detect partial discharges through the finished motor casing, this method also allows surge PD testing for finished motors.

Complex testing environments often come with high noise which are difficult to reduce. The ST4200 Partial Discharge Detector's high noise resistance can be further minimized by integrating with the SW2001's multiplexer-based architecture. This design significantly reduces wiring complexity by consolidating multiple input signals, minimizing cable runs and interconnections. This approach effectively reduces potential noise sources such as electromagnetic interference (EMI), ground loops, and capacitive coupling, resulting in more accurate and reliable measurements.