The AFGF Relay is a combination Overcurrent/Arc Flash and Ground Fault Relay (with Fuse Conservation) for switchgear and power distribution systems ranging from 400A – 6000A.
The AFGF system is designed for electrical equipment protection, not specifically for personnel protection.
The Arc Flash/Overcurrent section is designed to minimize damage due to overcurrent/Arc Flash events.
The Ground Fault section Class 1 Ground Fault relays with the proper CT/Sensors, are used for detecting Ground Fault Current in a grounded AC power system.
Note: The Arc Flash/Overcurrent section is not designed to prevent the condition, but to minimize the incident energy release and damage due to current spikes.
The AFGF system is designed for electrical equipment protection, not specifically for personnel protection.
The Arc Flash/Overcurrent section is designed to minimize damage due to overcurrent/Arc Flash events.
The Ground Fault section Class 1 Ground Fault relays with the proper CT/Sensors, are used for detecting Ground Fault Current in a grounded AC power system.
Note: The Arc Flash/Overcurrent section is not designed to prevent the condition, but to minimize the incident energy release and damage due to current spikes.
Arc Flash Relay Model selection: (3 MODELS)
AFGF1 Relay (Arc Flash)
- Arc Flash/Overcurrent Only (no Ground Fault)
- Options for with or w/o Fuse Conservation
- Uses individual sensors, (or a three phase sensor) around A, B and C Phases.
AFGF2 Relay (Arc Flash & Ground Fault)
- Arc Flash/Overcurrent & Ground Fault Protection
- W/O Fuse Conservation (For Fuse Conservation see AFGF4)
- Arc Flash/Overcurrent only enabled while in Maintenance Mode
- Ground Fault always enabled
- Uses 3 sensors on A, B & C phases for Arc Flash/ Overcurrent and a Zero Sequence for Ground Fault (allowing for better accuracy than the AFGF3)
The AFGF 2 model continually monitors for and will take action for Ground Fault, but only takes action for Overcurrent/Arc Flash when in Maintenance Mode. For Continuous Arc Flash Monitoring see AFGF 3 & AFGF4.
AFGF3 Relay (Uses 4 single phase sensors)
(Arc Flash/Ground Fault w/ Fuse Conservation)-
(Arc Flash/Ground Fault w/ Fuse Conservation)-
- Arc Flash/Overcurrent & Ground Fault Protection
- With Fuse Conservation and Ground Fault always enabled
- Reduced Arc Flash/Overcurrent and Ground Fault thresholds while in Maintenance Mode
- Uses 4 sensors on A, B,C and N phases for Arc Flash/ Overcurrent and Ground Fault (allowing for easier placement when Neutral in not located physically close to the three phases)