Huazheng Innovation: The Global Leading Relay Protection Tester Company Delivering Solutions for Modern Grids

A Relay Protection Tester is designed to simulate electrical quantities such as current, voltage, frequency, and phase, ...
T&D

Relay Test Set Suited for Older Installations, as Well as Future

Smaller, lighter and with a higher output power than any other comparable single-phase protective relay test instrument, Megger’s new SMRT1 smart protective relay test set is suited not only for ...
T&D

Expecting the Unexpected: Practical Issues in Relay Testing

Testing relays is both an art and a science. As relay technicians inevitably learn in the field, pure theory-based understanding of protective relays is not nearly enough for the real-world situations ...
EDN

PGT-0400 Series Ground-Fault Relay Test Unit block diagram

The PGT-0400 is a ground-fault-relay test unit designed to test current pickup level, time-delay and coordination of ground-fault protection. The tester injects current through the window of installed ...
Electronic Design

The ins and outs of relay AC performance testing

Relays are electromechanical devices that use a magnetic solenoid to actual a switch. When current is passed through the solenoid coil, it produces a magnetic field. The magnetic field is strengthened ...
EDN

Switchtec : Interface relay has a lockable test button

Aimed at panel builders, system integrators and process control applications, the HF115FP is available in single and double pole versions, rated at 16A and 8A consecutively. Showing versatility, the ...
Electronic Design

MEMS-Based RF Coaxial SPDT Relays Empower Advanced Wireless Systems

RF coaxial SPDT relays address signal-routing applications that demand a combination of high frequency, high power, and excellent RF performance. What role does an SPDT relay play in test applications ...