Introduction

PacT Series Master Range

Future-proof your installation with Schneider Electric’s low-voltage and medium-voltage PacT Series. Built on legendary Schneider Electric innovation, the PacT Series comprises world-class circuit breakers, switches, residual current devices and fuses, for all standard and specific applications. Experience robust performance with PacT Series within the EcoStruxure-ready switchgear, from 16 to 6300 A in low-voltage and up to 40.5 kV in medium-voltage.

Overview

The VigiPacT RHB relay provides earth-fault protection for all types of AC/DC installations, including power distribution, subdistribution, and industrial control systems.

The VigiPacT RHB relay is installed on the front of switchboards and panels, and provides valuable assistance in the maintenance of electrical installations.

The VigiPacT RHB relay devices operate on TN and TT systems. These systems are in particular, the loads containing six-pulse rectifiers or one-way rectifiers with smoothing, such as converters, battery chargers, construction site equipment with frequency-controlled drives.

The VigiPacT RHB relay is compatible with the following circuit breakers:

ComPacT NSX100-250
ComPacT NSX400-630
ComPacT NSXm16-160

The VigiPacT RHB relay is compliant with the standard IEC/EN 60947-2 annex M.

For more information on how to design efficient earth-fault protection with the VigiPacT RHB Type B relays, refer to the Earth Fault Protection Guide.

Features

The VigiPacT RHB relay is used together with a toroid. The main features of VigiPacT RHB relay are:

Provides earth-fault protection function with two separate adjustable thresholds (pre-alarm and alarm), with adjustable time delays
Measures AC/DC r.m.s value of sensitive residual current Type B according to the standard IEC/EN 60947-2 annex M
Displays measured value via multi-functional LCD display
Indicates alarms via LEDs (PRE-AL and ALARM) and changeover contacts (pre-alarm relay K1 and alarm relay K2)
Provides password protection against unauthorised parameter changing
Stores the value of the earth-leakage current measured for the last alarm detected in the memory
Provides self-test to monitor the toroid connection