Introduction to VigiPacT RHU and RHUs Relays

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

VigiPacT is a complete range providing earth-fault protection for all types of AC installations, including power distribution, sub-distribution, and industrial control systems. VigiPacT devices operate on TT, TNS, and IT systems for protection of persons against direct contact. For IT system, the VigiPacT devices operate only where the loop impedance is high.

The relays are type A and type AC as defined by the standard IEC/EN 60947-2 (annex M).

The VigiPacT RHU/RHUs relay installed on the front of switchboards and panels provides valuable assistance in the maintenance of electrical installations.

VigiPacT RHU/RHUs relay perform the following functions:

Monitors the earth-leakage current.
Helps to identify the insulation faults before they become hazardous for life and property.
Helps to protect the motors, the earthing conductors, and the property against fire hazard.
Helps to protect the people against indirect contact and provides complementary protection against direct contact.

Standards

The VigiPacT RHU/RHUs relays are designed to comply with the following standards:

Standards	Description
IEC/EN 60755	General rules for residual-current protection devices.
IEC/EN 60947-2 (annex M)	Low-voltage switchgear and controlgear, part 2 (circuit breakers).
IEC/EN 60947-5-1	Low-voltage switchgear and controlgear, part 5-1(electromechanical devices).
IEC/EN 61000-4-2	Electrostatic-discharge immunity test.
IEC/EN 61000-4-3	Radiated, radio-frequency, electromagnetic-field immunity test.
IEC/EN 61000-4-4	Electrical fast transient/burst immunity test.
IEC/EN 61000-4-5	Surge immunity test.
IEC/EN 61000-4-6	Immunity to conducted disturbances, induced by radiofrequency fields.
CISPR 11	Limits and methods of measurement of electromagnetic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment.
EN 61000-6-2	Immunity to industrial environments.
EN 50081-1	Emissions for commercial and residential environments.
IEC/EN 60664-1	Insulation coordination for equipment within low-voltage systems, part 1.
EN 50102	Degrees of protection provided by electrical enclosures against external mechanical impact.
IEC 60364 and NF C 15100	Installation rules for low-voltage electrical distribution.

VigiPacT RHU/RHUs relay is compliant with the standard IEC 60947-2 (Annex M). For achieving this standard, it has passed test sequence MI to MIV. The VigiPacT range also has a CB scheme certificate.