Arc quenching substations take the great features of Arc Quenching switchgear, and pairs it with Eaton’s Arc-Reduction Vacuum Fault Interrupter transformer (AR-VFI) extending the zone of protection from the line-side of the low-voltage circuit breaker to the transformer secondary. Arc Quenching Switchgear reduces incident energy to a level where the switchgear will survive an arc flash event, while providing enhanced safety and minimal equipment downtime.
With the capabilities of the Arc-Reduction VFI transformer (AR-VFI) and the Arc Quenching Magnum low-voltage switchgear, the AQS-VFI provides reduced incident energy and hazard exposure.
The AQS-VFI is a substation that provides close-coupling between the AR-VFI and the Arc Quenching Switchgear providing one of the smallest footprints on the market
Arc Quenching Switchgear employs the Eaton Arc Flash Relay which utilizes advanced algorithms to prevent nuisance operation of the Arc Quenching Device (AQD). Should an arc flash incident occur, restoring service is accomplished by returning the switchgear to normal operating condition and replacing the draw-out AQD which can then reduce downtime from weeks or months to hours.
Arc Quenching Video Series: How does Arc Quenching work?
Learn more about Arc Quenching Switchgear
PRIMARY VOLTAGE |
Up to 38 kV |
PRIMARY SHORT-CIRCUIT CURRENT RATING |
Up to 50 kA with partial-range current limiting fuses (PRCLFs) |
TRANSFORMER RATING |
500 to 6,000 kVA |
BASIC IMPULSE LEVEL (BIL) |
150 kV |
SECONDARY VOLTAGE |
Up to 600 V |
SECONDARY CURRENT |
Up to 4,000 A |
SECONDARY SHORT-CIRCUIT WITHSTAND |
Up to 100 kA at 600 V |
IEEE/ANSI |
C37.20.1, C37.20.7, C37.51, C57.12.00, C57.12.34 and C57.12.36 |
UL |
1066, 1588 and 2748 |
CSA |
C22.2 No. 0.22 and 31-10, C227.4 or C88-M90 |
THIRD-PARTY APPROVAL/RECOGNITION |
FM Global and UL/cUL (for AR-VFI) |
LAYOUT |
Substation |
ENCLOSURE RATING |
NEMA 1 (AQS) and IEEE C57.12.28 (AR-VFI) |
ENCLOSURE ENVIRONMENT |
Indoor only |
INSULATING MEDIUM |
Air terminal chambers |
PRIMARY OVERCURRENT PROTECTION |
Vacuum fault interrupter |
SECONDARY OVERCURRENT PROTECTION |
UL 1066 circuit breaker |
SECONDARY DEVICE MOUNTING |
Draw-out |
POWER-DIRECTION |
Step-down |
MOTOR OPERATOR |
Remote reset of VFI |
MICROPROCESSOR RELAY |
Eaton E-Series, SEL or approved differential relay |
INTEGRAL UPS |
24-hr battery backup |
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