This document introduces the features and characteristics of the SKF field instrument signal lightning arrester, including explosion-proof certification, nominal voltage, working voltage, discharge current, transmission frequency, etc.
The YUTONG SKF Field Instrument Signal Lightning Arrester (Ex) is an intrinsically safe and explosion-proof surge protector designed for fine protection of instruments and equipment in hazardous areas of industrial process control. It features a compact size, threaded screw-in connection, and an IP67 protection rating for the housing. The device is suitable for two-wire, three-wire, and four-wire signal transmission systems.
The product includes specific technical parameters such as a maximum continuous operating voltage of 32V for 24V models and 55V for 48V models, with maximum discharge currents of 10kA and 15kA (8/20μs). It is certified by the National Instrument Explosion-proof Safety Supervision and Inspection Station (NEPSI) with the mark Ex ia IIC T6 Ga. Installation requires a good grounding system and should be performed close to the protected equipment, with a maximum spacing of 1 meter. This manual is written in Chinese.
| Maximum Continuous Operating Voltage (24V Model) | 32V |
|---|---|
| Maximum Continuous Operating Voltage (48V Model) | 55V |
| Maximum Discharge Current (8/20μs) | 10kA / 15kA |
| Dimensions | 75mm x 27mm |
The arrester should be installed as close as possible to the protected equipment, with a maximum spacing of 1 meter.
Red connects to signal '+', green connects to signal '-', and black connects to ground.
If the loop signal returns to normal after removing the arrester, it indicates the arrester has been struck or its life has ended.