Introduction

Test Block is a testing Module that is used together with test plugs in the field of relay protection. It is capable of quickly separating input side (voltage, current, auxiliary power supply, etc.) of relay protection device from the output loop, meanwhile ensure reliable short connection of external CT to simplify the testing process of the device

Relay provides complete protection for radial and looped distribution circuits. It offers arc-flash mitigation, fault location, high-impedance fault detection, broken conductor detection, event analysis, and more. You can quickly integrate the relay into serial- or Ethernet-based communications with IEC 61850 Edition 2, IEC 60870-5-103, the IEC 62439 Parallel Redundancy Protocol (PRP), Ethernet/IP, the IEEE 1588 Precision Time Protocol (PTP), Modbus, DNP3, and other protocols. It Maximizes control scheme flexibility using time- and instantaneous-overcurrent, overvoltage, under-voltage, directional power, and frequency elements, with breaker failure protection for one three-pole breaker. Second- and fifth-harmonic blocking improves protection security during magnetizing inrush conditions caused by line re-energization, or by voltage recovery after any out-of-zone fault.