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Industry insights, product updates and technical guides on power relay protection & automation
Protective Relays

What Are Protective Relays?

Protective relays in electric utility market are essential safety control devices widely adopted throughout power systems. They monitor real-time operating parameters of power equipment, automatically detect short circuits, earth faults and abnormal operating conditions, and swiftly send trip signals to…

Transformer Differential Protection Testing

Transformer Differential Protection Testing: Methods, Procedures

Introduction Transformer Differential Protection Testing: Ensuring Reliable Transformer Protection in Power Systems As the primary main protection for power transformers, the 87T differential protection system is designed to quickly identify and isolate internal transformer faults. However, protection reliability cannot rely…

RMU Protection Relay

RMU Protection Relay for Medium-Voltage Ring Main Units

Introduction Medium voltage (MV) ring main units (RMUs) are the backbone of modern urban, industrial, and renewable power distribution networks. Designed for compact, reliable ring-grid power distribution, RMUs ensure continuous power supply through flexible grid switching and fault isolation. However,…

Relay Setting Calculation for Motor Protection

Motor Protection Faults, Protection Schemes and ANSI Functions

Overview This paper mainly illustrates motor fault categories, protection schemes as well as relay setting calculation for motor protection, assisting overseas electrical engineers in mastering motor protection devices and their practical application specifications. 10kV high-voltage motors act as critical power…

High Quality

Stable performance, reliable design, ensuring safe operation for power system protection and grid stability.

Fast Delivery

Timely delivery to support your urgent orders and project schedules efficiently and professionally at any time.

Best Warranty

Professional Warranty: Reliable after-sales support for stable relay protection and long-term customer satisfaction.