Functions:

VigiPacT residual-current relays come in 2 main versions

Protection: when detecting significant leakage current in the line it monitors, the relay trips the breaker at the top end of it, through its shunt trip auxiliary
Monitoring: signalling leakage current by LED, bargraph or digital display on front, and by an output dry contact. Available in single-line and multi-line variants monitoring up to 12 different distribution lines.

Characteristics:

Residual current sensitivity ranging from 30 mA to 30 A, fixed or adjustable, for A type relays,
and 30 mA to 3 A for B type relays
Trip time delay ranging from 0 to 4.5 seconds, fixed or adjustable
Suitable for:
- Networks with operating voltage up to 1000 V, and frequency up to 400 Hz
- lines with current carrying capacity up to 3200 A
- main switchboards (at the foot of the transformer) in most demanding industrial environments (overvoltage withstand category IV)
Type A or type B as per IEC 60 755
Compliant with standards:
- IEC 60 755 and IEC 60947-2 appendix M (certificates by Kema laboratories available)
- UL 1053 listed, CSA C22.2 N° 144 for North-America
- EAC for Russia, CCC for China

Installation:

2 form factors available:

DIN profile, to clip on rail or secure on backplate
72x72mm, for switchboard front plate or door mounting, using clips

Device front panels all feature class II insulation as per IEC/EN 60 664-1

VigiPacT relays detect insulation faults, using the residual current technique. One current transformer only needs to be set, embracing phase AND neutral conductors all together. The residual current transformers come in three different shapes:

Closed toroids; for new installations (new switchboards or extensions), with cable capacity up to 630 A for A type relays, 250 A for B type relays
Rectangular sensors; for lines with capacity up to 3200 A (busbars, or cables above 630 A)
Split toroids; to equip distribution lines already in operation, with cable capacity up to 250 A

VigiPacT

Earth-leakage protection and monitoring relays (formerly Vigirex)