YNWJ-500 Microcomputer Comprehensive Protection Device
Our Microcomputer Comprehensive Protection Device and Automatic Equipment is a new generation of micro-type relay protection devices specifically developed by our company to meet the relay protection requirements of power systems across various power plants, sub-stations, and distribution stations. It offers comprehensive protection functions for primary equipment such as overhead lines, cable lines, transformers, motors, capacitors, etc., at voltage levels of 35KV and below. These devices can either be installed locally in switchgear cabinets or centrally mounted on screens. The well-designed structure ensures long-term and reliable operation under harsh conditions.
Product Features
Integrates rapid shutdown and multiple overcurrent protections, suitable for complex electrical system environments
Compact size, full functionality
Utilize the logical reasoning capabilities of computers to handle complex protection issues.
The microcomputer's memory function can significantly enhance protection performance and increase the sensitivity of protection.
Protection Type
(1) Line Protection and Control Device (2) Transformer Protection and Control Device (3) Capacitor Protection and Control Device (4) Motor Protection and Control Device
Feature Configuration
1. Current instantaneous protection
2. Overcurrent I protection
3. Overcurrent II stage protection
4. Inverse Time Overcurrent Protection: The device provides three inverse time curves as specified in IEC 255-4.
5. Overload Protection
6. Three-phase Zero Sequence Overcurrent (Grounding Protection)
7. Two-section reverse-phase overcurrent protection (motor reverse protection)
8. Rear Acceleration Protection
9. Three-phase instantaneous reclosing
10. Overvoltage and undervoltage protection
11. Neutral Overvoltage Protection
12. Motor Start Time Over-Protection
Overheat Protection
14. PT Disconnection Inspection
15. CT Line Disconnection Check
16. Non-electricity Protection: Heavy Gas, Light Gas, Over-temperature Trip, High Temperature Alarm, Network Door Trip
