Innovative Solutions for Clean, Reliable Power
Tier AF 800 - Arc Flash Relay System
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The Tier AF Series Arc Flash Relay System reduces arc flash incident energy and boundaries in both Medium-Voltage and Low-Voltage electrical systems.
The Tier AF series is an externally installed control cabinet that uses both fiber optic sensors and current transformers (CTs) to immediately detect both light and current associated with an arc flash event and quickly activate a system disconnect.
- Connects external to equipment
- Fast & easy installation
- Ensures electrical equipment’s warranties, agency listings & selective coordination maintained
- Detects light & current within the equipment
- Fast reaction
- Relay is < 1 ms
- Shunt trip mechanism< 50 ms
- Powered from external location
- 120 – 480 V, 1P, 5A
- 200 kA SCCR (UL 508A method)
- Monitoring
- Continuous self-monitor
- External LEDs
- Remote communications via RS485 or Ethernet TCP
Arc Flash
Caused By:
- Dust, Corrosion, Material Failure
- Dropping tools, Accidental Touching
- Faulty Installation
Results In:
- Burns to skin
- Fire (could spread thru facility)
- Flying objects – molten metal
- Blast pressures upwards of 2,000 lbs/ft2
- Sound levels up to 140 dB
- Temperatures up to 35,000 F
- Stress & damage to equipment involved
NFPA 70-2017, Article 240.87
Where the highest continuous current trip setting for an overcurrent device can be adjust is 1200 A or higher
(A) Documentation
- Available to design, install, operate, or inspect
(B) Method to Reduce Clearing Time
- Zone interlocking
- Differential relaying
- Maintenance switch w/ indicator
- Arc flash mitigation system
- Instantaneous trip settings
- Instantaneous override
- Approved equivalent means
307 Chaumont Dr. │ Endwell, NY 13760 │ Phone: 607-484-1212 │ Toll-Free: 866-748-2357
SOUTHERN TIER TECHNOLOGIES © 2017 - 2022
