YNWJ-530 Microcomputer Comprehensive Protection Device

Our microcomputer integrated protection device and automatic equipment are newly developed relay protection devices specifically designed to meet the relay protection requirements of power systems across various power plants, sub-stations, and distribution stations. They offer comprehensive protection functions for primary equipment such as overhead lines, cable lines, transformers, motors, and capacitors up to 35KV. These devices can be installed locally in switchgears or centrally mounted on screens. The well-designed structure ensures long-term and reliable operation under harsh conditions.

Product Features

Integrated with rapid break and overcurrent protection, suitable for complex electrical system environments

Micro-computer protection devices can modify or check the protective settings online, without the need for power shutdown verification, thus reducing the workload of operation and maintenance.

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.

Customizable anti-jumping function to prevent frequent tripping of switches

Protection Type

(1) Line Protection and Control Device  (2) Transformer Protection and Control Device  (3) Motor Protection and Control Device  (4) Capacitor Protection and Control Device

(5) Backup Trip Protection and Control Device (6) PT Protection and Control Device

Description: Optional Anti-Skip Feature

Feature Configuration

1. Current Instantaneous Overcurrent Protection

2. Overcurrent I phase protection

3. Overcurrent II Stage Protection

4. Inverse-time overcurrent protection: The device provides three inverse-time curves as specified by IEC 255-4.

5. Overload Protection

6. Three-phase Neutral Overcurrent (Grounding Protection)

7. Two-stage 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 Excess Protection

Overheat Protection

14. PT Disconnection Inspection

15. CT Disconnection Check

16. Non-electrical Protection: Heavy Gas, Light Gas, Over-temperature Trip, High Temperature Alarm, Grid Door Trip