VigiPacT

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

Reliability of the protection

• Continuous self-monitoring: any failure of the power supply, of the relay to toroid link, or of internal electronics is notified. The notification may be used to trip the circuit breaker. LEDs on front of the device continuously confirms absence of such failures
• Access to settings impaired by sealable cover (by password for RHU and RMH), while the test and reset buttons remain continuously accessible
• Coordination with ComPacT circuit-breakers, ensuring complete switch off within 40 ms after set time delay
• Overvoltage withstand category IV (category III for B type)

Minimized downtime

• Trip time delays enabling selectivity of earth-fault protection
• No trip under leakage currents below 80% of the set threshold (vs standards tolerance down to 50%)
• No trip under transient leakage currents, caused for instance by capacitor charging, or by motor or transformer switching
• Sensitivity to harmonics adapted to hazardous leakage intensity at every frequency
• rms measurement of earth-leakage currents
• inverse-time tripping curve
• Test without tripping available

Sustainability

• ISO 14001 certified manufacturing sites
• All spare sparts marked for sorting and recycling purposes
• Designed using EIME software (Environmental Information and Management Explorer)
• RoHS and REACh compliant

VigiPacT relays are especially suitable for:

• Electrical networks operating with voltage above 500 V (up to 1000) or frequency higher than 60 Hz (up to 400)
• Distribution lines with capacity 630 A and above (up to 3200)
• Upgrade of switchboards already in operation
• Monitoring and protection at the root of power distribution

B type VigiPacT relays are especially suitable for:

• Three-phase supplied loads including rectifiers : lifts, cranes, HVAC, high-power speed drives, UPS...
• Single-phase DC boost power supply in some electric vehicle chargers
• Loads including single-phase speed drives: washing machines, air-conditioning units, heat pumps, food processors)
• power supply network equipped with harmonic filters