Infrared temperature measurement window

An infrared temperature‑measurement window, also known as an infrared observation window, infrared viewing window, or infrared window, is an optical window that transmits infrared, ultraviolet, and visible light. It enables infrared thermal imagers and other infrared temperature‑measurement devices to perform infrared scanning of internal connection points within high‑ and low‑voltage electrical equipment through this window. It is primarily used in sealed electrical environments at voltage levels of 380 V and above to detect and monitor the temperatures of heat‑prone components—such as circuit breaker terminal blocks and the lower contacts of circuit breaker trolleys—in power equipment operating under special sealed conditions.

Microcomputer-based harmonic elimination device

The TZY‑TX2000 microprocessor‑based resonant suppression device (hereinafter referred to as the "microprocessor‑based suppressor") is a product designed to address severe incidents—such as the burnout or even explosion of potential transformers (PTs)—caused by ferroresonance in power systems. Developed and manufactured by Taizhongyan Electric, this new‑generation intelligent suppressor employs a high‑performance DSP processor as its core, incorporates high‑power, contactless resonant‑suppression components, and features an intuitive human–machine interface comprising an LCD display, signal indicator lights, and touch‑sensitive buttons. Paired with advanced intelligent software, it forms a state‑of‑the‑art, user‑friendly smart device for diagnosing, suppressing, and recording resonant faults.

Surge arrester online monitoring device

The surge arrester online monitor (also known as a surge arrester leakage current and operation recorder, or simply "monitor") is a device connected in series at the low-voltage end of the surge arrester. It monitors changes in leakage current, records the number of operations, and provides alarm notifications. It is suitable for operational monitoring of zinc oxide and silicon carbide surge arresters across various voltage levels in power systems. Based on its application, it can be categorized into two types: one for porcelain‑cased or composite‑outer‑sheath surge arresters, and another for IS‑tank‑type surge arresters.