Eaton arc flash relay system 2016 Eaton All

Eaton arc flash relay system © 2016 Eaton. All rights reserved.

Arc faults • Most devastating type of fault in MV and LV electrical assemblies • Current flow through ionized air—> plasma • Most arc faults are caused by human errors • 80% of arc faults start in the cable compartment • A single-phase arc fault develops quickly into a three-phase low impedance high power arc fault © 2016 Eaton. All rights reserved. 2

Eaton arc flash relay system • The Eaton arc flash relay (EAFR) system is a combination of arc flash relay modules and sensors designed to detect and clear arc flash events in low- and medium-voltage electrical assemblies © 2016 Eaton. All rights reserved. 3

Arc fault protection philosophy • Speed—no intentional delays • Less than 2 ms relay operate time • Sensitive • Current set-points just above loads, sensitive ground-fault set points • Selectivity • Trip-only affected feeder(s) • Secure—dual-sensing prevents false trips • Phase and ground instantaneous overcurrent elements act as a permissive for the light sensing inputs • Self monitoring • System monitors all internal system functions along with external connections between modules, light sensors or loops and current transformers © 2016 Eaton. All rights reserved. 4

Eaton arc flash relay modules Features EAFR-110 F EAFR-110 P EAFR-102 EAFR-101/D Three-phase current detection Yes No No Ground current detection Yes No No Maximum point sensors 0 12 Maximum fiber loop sensors 3 0 High-speed outputs (2 ms) 2 2 0 0 Trip relays (7 ms) 4 4 EAFR-110 EAFR-101/102 EAFR-101 D © 2016 Eaton. All rights reserved. 5

EAFR-01 point sensor • Point sensor in each enclosed compartment and every 3 feet in open areas • Sensor cable—shielded twisted pair 18 -20 AWG • 3 wire (+24 Vdc, signal, Gnd) • Current based information (2 m. A, 20 m. A) • Self monitoring verifies correct field connections • Maximum 3 sensors in line (up to 328 feet) © 2016 Eaton. All rights reserved. 6

Factory Installed Point Sensors (single ended) Selective Breaker Trip Non – Selective Breaker Trip © 2016 Eaton. All rights reserved. 7

Factory Installed Point Sensors (double ended) Non – Selective Breaker Trip © 2016 Eaton. All rights reserved. 8

Fiber sensors Fiber type Plastic (EAFR-06) Glass (EAFR-07) High-temp glass (EAFR-08) Light intensity threshold 8000 lux Detection radius 360 degrees Max length 40 m (131 ft) 50 m (164 ft) Diameter 1 mm (0. 039 in) 1. 2 mm (0. 047 in) Bending radius 5 cm (2 in) 1 cm (0. 394 in) Operating temperature -10 to 85°C -40 to 125°C © 2016 Eaton. All rights reserved. 9

Fiber Loop Retrofit © 2016 Eaton. All rights reserved. 10

Provides safety and efficiency in various applications Oil and gas Commercial or institutional infrastructure Industrial Electric utilities © 2016 Eaton. All rights reserved. 11

Thank you © 2016 Eaton. All rights reserved.