ST280G-L Universal Protection Device

Zhuhai Sichuang ST280G-L Universal Protection Device

Overview

1.1 Application
The ST280G-L Universal Protection Device is a microprocessor-based protection device primarily developed for applications at voltage levels of 35KV and below. It offers four protection types, providing corresponding protection functions for primary equipment such as incoming/outgoing lines, transformers (for substation/plant use), motors, and capacitors.
1.2 Features
1. Utilizes a highly integrated 32-bit microprocessor with on-chip bus architecture, employing high-performance, high-reliability, and highly integrated wide-temperature or industrial-grade components to ensure normal operation in harsh environments.
2. Provides four types of equipment protection for flexible on-site application.
3. Supports switching between Chinese and English interfaces, as well as selection of primary/secondary value display modes to accommodate different user preferences.
4. Offers 50Hz/60Hz system selection and two-phase/three-phase wiring options, expanding the device's application scope.
5. Comprehensive protection function configuration allows flexible enabling/disabling of various protections and programmable output configuration.
6. Features 9 intelligent digital inputs with user-definable functions for convenient on-site wiring.
7. Includes basic measurement and control functions, capable of measuring electrical parameters such as phase voltage, line voltage, current, active power, reactive power, apparent power, power factor, and frequency.
8. Equipped with a large LCD screen (160*160, 10*10 Chinese character display), primary wiring diagram display, and multi-layer menu interface for an extremely user-friendly experience.
9. The device's large-capacity FLASH memory stores up to 60 historical event records with data retention during power loss.
10. The operating circuit plugin supports both AC/DC universal operation and adaptive switching current functionality, compatible with various circuit breakers for simple and reliable operation.
11. Incorporates comprehensive dynamic and static self-test functions to monitor the device's operational status in real-time, ensuring reliability.
12. Provides an RS-485 communication bus interface with standard communication protocols.