arc sensor user manual - eaton...the fixed light sensitivity of the eafr-07 sensor is 8,000 lux. the...

Arc Sensor User Manual

EAFR-01

EAFR-07

EAFR-06 EAFR-08

MN026008EN

ii Arc Sensor User Manual MN026008EN February 2016 www.eaton.com

DISCLAIMER OF WARRANTIES AND LIMITATION OF LIABILITY

The information, recommendations, descriptions and safety notations in this document are based on Eaton Corporation’s (“Eaton”) experience and judgment and may not cover all contingencies. If further information is required, an Eaton sales office should be consulted. Sale of the product shown in this literature is subject to the terms and conditions outlined in appropriate Eaton selling policies or other contractual agreement between Eaton and the purchaser.

THERE ARE NO UNDERSTANDINGS, AGREEMENTS, WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY, OTHER THAN THOSE SPECIFICALLY SET OUT IN ANY EXISTING CONTRACT BETWEEN THE PARTIES. ANY SUCH CONTRACT STATES THE ENTIRE OBLIGATION OF EATON. THE CONTENTS OF THIS DOCUMENT SHALL NOT BECOME PART OF OR MODIFY ANY CONTRACT BETWEEN THE PARTIES.

In no event will Eaton be responsible to the purchaser or user in contract, in tort (including negligence), strict liability or other-wise for any special, indirect, incidental or consequential damage or loss whatsoever, including but not limited to damage or loss of use of equipment, plant or power system, cost of capital, loss of power, additional expenses in the use of existing power facilities, or claims against the purchaser or user by its customers resulting from the use of the information, recom-mendations and descriptions contained herein. The information contained in this manual is subject to change without notice.

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MN026008EN

Arc Sensor User Manual MN026008EN February 2016 www.eaton.com

Contents

1. ARC SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11.1 Arc Light Point Sensor Group: EAFR-01-A, EAFR-01-B, and EAFR-01-C . . . . . . . . . .1

1.2 Arc Light Fiber Optic Loop Sensor (Plastic) EAFR-06 . . . . . . . . . . . . . . . . . . . . . . .2

1.3 Arc Light Fiber Optic Loop Sensor (Glass) EAFR-07 . . . . . . . . . . . . . . . . . . . . . . . .3

1.4 Arc Light Fiber Optic Loop Sensor (High Temperature) EAFR-08 . . . . . . . . . . . . . .3

1.5 Sensor Type Dependencies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

2. SENSOR CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.1 Arc Light Point Sensor EAFR-01 Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

3. ORDERING CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

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MN026008EN


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1. Arc Sensors


1. Arc Sensors

This manual describes only the EAFR-0x series sensors for Eaton arc flash relays arc protection system. It is impor-tant to read through instruction manuals of Eaton arc flash relays.

The Eaton arc flash relays (EAFR) series provides the choice of different types of arc sensors to be utilized in different units and different switchgear types according to specific application requirements. Available sensor types are arc light point sensors and arc light fiber optic loop sensors.

Arc light point sensors are typically installed in metal clad compartments providing quick, accurate location of the fault-ed area. Arc light fiber loop sensors are typically installed to cover a wider protected area with one fiber when no need for more exact fault locations exists.

1.1 Arc Light Point Sensor Group: EAFR-01-A, EAFR-01-B, and EAFR-01-CThe EAFR-01 arc light point sensors have a light sensitive photodiode element activated by receiving arc light. The EAFR-01 arc sensors should be mounted in the switchgear cubicles in such a way that the light sensitive part can receive light from the protected area. Typically, one sen-sor per closed metal clad compartment is used. In open spaces, such as the bus bar section, arc sensors should be mounted at a maximum of two meters (6.56 ft) apart.

The fixed light sensitivity of the EAFR-01-A sensor is 8,000 Lux, the EAFR-01-B sensor is 25,000 Lux and the EAFR-01-C sensor is 50,000 Lux. The sensor does not require user settings. The point sensor’s light detection radius is 180 degrees.

Figure 1. Arc Point Sensor EAFR-01.

1.1.1 EAFR-01 Installation and WiringThe EAFR-01 point sensors can be installed either on or through the compartment wall. An example of on the wall mounting is seen in Figure 2. The EAFR-01 sensor is fixed against the wall using two screws.

Figure 2. EAFR-01 Point Sensor Mounted to the Compartment Wall.

The same screw pattern is utilized in a through the wall mounting arrangement. In this arrangement, the unit is turned around and the point of the photodiode sensor pro-trudes through a small hole cut in the wall. The point of the sensor now faces the compartment to be protected. This allows for the body of the sensor and cabling to be located outside the compartment (see Figure 3). For both types of installation, two screws are attached from the back side of the sensor. No external mounting plates are needed in any case.

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1. Arc Sensors


Table 1. Suggested 100 Ω Compatible Shielded, Twisted Pair Cables.

Manufacturer Part No. Atten. dB/100' @ 1 MHz Data AWG Cable Diameter mm (in.) Temp. Rating °C (°F) Voltage Rating

Belden 3074F 0.34 18 11.68 (0.46) -40/+75 (-40/+167)

600 V

Belden 9841 0.60 24 5.89 (0.23) -30/+80 (-22/+176)

300 V

Belden 89841 0.60 24 5.13 (0.20) -70/+200 (-94/+392)

300 V

Figure 3. EAFR-01 Point Sensor Mounted Outside Compartment.

The cable to be used for wiring to the sensor should be a shielded, twisted pair cable. Table 1 lists several cables that can be used. Equivalent cable styles are acceptable to be used for the dielectric and temperature requirements of the application. Cable connectors are located beneath the covers on each end of the EAFR-01 sensors. The cov-ers can be conveniently detached for fastening the sensor wires. Reattach the covers after installing the wires. Cable connectors are located at both ends of the sensor for series connecting a maximum of three sensors in one line (see Figure 4).

1.1.2 EAFR-01 Point Sensor Technical Data

Table 2. Technical Data for the EAFR-01 Group of Point Sensors.

Light Intensity Threshold 8,000 Lux/25,000 Lux/50,000 Lux

Detection Radius 180 Degrees

Mechanical Protection IP 64

Sensor Wiring Arrangement Two Wires and Shield

Sensor Cable Specification Shielded Twisted Pair 0.75 mm2 (0.03 in.2)

Maximum Sensor Cable Length per Sensor Channel

200 m (656.2 ft)

Operating Temperature -20 to 85°C (-4 to 185°F)

1.2 Arc Light Fiber Optic Loop Sensor (Plastic) EAFR-06The EAFR-06 is an arc light fiber optic loop sensor. The EAFR-06 fiber is a plastic fiber optic cable. EAFR-06 arc light fiber optic loop sensors can be ordered in pre-manufac-tured lengths of 10, 15, 20, 25, 30, 35, 40 m (32.81, 49.21, 65.62, 82.02, 98.43, 114.83, 131.23 ft). The EAFR-06 loop sensor fiber optic cable should be distributed throughout the protected switchgear cells.

The EAFR-06 is not recommended to be cut and/or spliced on site. If accidental breakage of the loop sensor occurs, Eaton recommends replacing the loop sensor. Contact your nearest Eaton representative for more information.

The fixed light sensitivity of the EAFR-06 sensor is 8,000 Lux. The sensor does not require user settings. The loop sensor’s detection radius is 360 degrees (see Figure 4).

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1. Arc Sensors


Figure 4. EAFR-06 Arc Light Fiber Optic Loop Sensor (Plastic).

Table 3. Technical Data for the EAFR-06 Arc Light Fiber Optic Loop Sensor (Plastic).

Light Intensity Threshold 8,000 Lux


Maximum Length 40 m (131.23 ft)

Diameter 1 mm (0.039 in.)

Bending Radius 5 cm (2 in.)

Operating temperature -10 to 85°C (14 to 185°F)

1.3 Arc Light Fiber Optic Loop Sensor (Glass) EAFR-07The EAFR-07 is an arc light fiber optic loop sensor. The EAFR-07 fiber is a robust fiber optic cable providing practi-cally unlimited bending radius. EAFR-07 contains hundreds of glass fiber drains covered by a plastic tube making it extremely strong. The EAFR-07 sensors can be ordered in pre-manufactured lengths of 10, 15, 20, 25, 30, 35, 40, 45, 50 m (32.81, 49.21, 65.62, 82.02, 98.43, 114.83, 131.23, 147.64, 164.04 ft). The EAFR-07 loop sensor fiber optic cable should be distributed throughout the protected switchgear cells.


The fixed light sensitivity of the EAFR-07 sensor is 8,000 Lux. The sensor does not require user settings. The loop sensor’s detection radius is 360 degrees (see Figure 5).

Figure 5. EAFR-07 Arc Light Fiber Optic Loop Sensor (Glass).

Table 4. Technical Data for the EAFR-07 Arc Light Fiber Optic Loop Sensor (Glass).



Maximum Length 50 m (164 ft)

Diameter 1.2 mm (0.047 in.)

Bending Radius 1 cm (0.394 in.)


1.4 Arc Light Fiber Optic Loop Sensor (High Temperature) EAFR-08The EAFR-08 is an arc light fiber optic loop sensor used for high temperature applications. It is developed to withstand temperatures of up to 125°C (257°F) and is therefore suit-able for installation in wind turbine windings. The EAFR-08 fiber is a robust fiber optic cable providing practically unlimit-ed bending radius. The EAFR-08 contains hundreds of glass fiber drains covered by a plastic tube making it extremely strong. EAFR-08 loop sensors can be ordered in pre-manufactured lengths of 10, 15, 20, 25, 30, 35, 40, 45, 50 m (32.81, 49.21, 65.62, 82.02, 98.43, 114.83, 131.23, 147.64, 164.04 ft) The EAFR-08 loop sensor fiber optic cable should be distributed throughout the protected switchgear cells.


The fixed light sensitivity of the EAFR-08 loop sensor is 8,000 Lux. The sensor does not require user settings. The loop sensor’s detection radius is 360 degrees (see Figure 6).

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2. Sensor Connection


Figure 6. EAFR-08 Arc Light Fiber Optic Loop Sensor (High Temperature).

Table 5. Technical Data for the EAFR-08 Arc Light Fiber Optic Loop Sensor (High Temperature).


Detection radius 360 Degrees

Maximum Length 50 m (164 ft)

Diameter 1.2 mm (0.047 in.)

Bending Radius 1 cm (0.394 in.)


otee:N If any of the EAFR-06, 07, 08 loop sensor ends need to be covered to avoid light detection from outside the protected zone, consult your nearest Eaton representative for more information.

1.5 Sensor Type DependenciesDifferent sensor types can be utilized in different arc flash protection relays of the EAFR series. Table 6 describes the dependencies.

Table 6. EAFR Series Relays and Arc Sensor Dependencies.

EAFR-01Point Sensor

EAFR-06Plastic Loop Sensor

EAFR-01Glass Loop Sensor

EAFR-01High Temperature Loop Sensor

EAFR-101 Yes No No No

EAFR-102 No Yes Yes Yes

EAFR-110P Yes No No No

EAFR-110F No Yes Yes Yes


2.1 Arc Light Point Sensor EAFR-01 Connection1. Open the sensor side covers and then detach the

pluggable connectors from the sensor PCB. Prepare the three twisted shielded pair cable connection (see Figure 7).

otee:N There is no “In” or “Out” end of the cable. Either end of the cable can be used.

Figure 7. Sensor Side Covers Removed and Pluggable Connectors Detached.

2. Before connecting the cable to the connector, make sure that the connecting order is correct (+, signal, shield). The appropriate pin information is shown on the bottom shell of the sensor. Plug the wires into the connector and fasten them by using a screw driver (see Figure 8).

Figure 8. Location of the PIN Information and Securing the Cable.

3. Connect the other end of the cable to a sensor channel on EAFR-101 or EAFR-110P relay (see Figure 9).

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Figure 9. Sensor Cable Connected to a Sensor Channel on the Back of the Relay.

4. Check the front panel of the relay. Only the POWER LED turns on at this moment (see Figure 10).

Figure 10. POWER LED Illuminated on the Front of the Relay.

5. Attach the connector back to the sensor PCB (see Figure 11).

Figure 11. Cable Connected to the Sensor PCB.

6. After connecting the sensor to the relay, the ERROR LED turns on, and the appropriate sensor channel LED starts to blink (e.g. S1 LED) (see Figure 12). The LEDs will blink to indicate that there is a new connection that has been made and the system auto-configuration set-ting has not been run (see step 7).

Figure 12. Sensor Channel LED.

7. Press and hold the SET push button on the front panel for two seconds in order to run the system auto-con-figuration setting (see Figure 13). The relay memorizes the sensor amount and binary input lines connected (if any).

Figure 13. Location of the SET Push Button.

8. After completing the system auto-configuration setting, the ERROR LED should be reset and then close both end covers of the point sensors (see Figure 14).

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Figure 14. End Covers Closed on the Sensor.

9. A maximum of three arc sensors can be daisy-chained to the same sensor input on the EAFR-101 relay (see Figure 15).

Figure 15. Maximum of Three Daisy-Chained Sensors.

otee:N The Auto Configuration is a part of the Self Supervision Function which insures that all connec-tions and sensors are fully functional and ready to operate at all times.

10. For arc light fiber sensors, they can be plugged into the back of an EAFR relay as shown in Figure 16.

Figure 16. Arc Light Fiber Sensors Plugged into EAFR Relay.

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3. Ordering Codes


3. Ordering Codes

Eaton Catalog Number Eaton Style Number Part Number Description

EAFR-110P 65C2010G01 Current, point sensor unit

EAFR-110F 65C2010G02 Current, fiber loop sensor unit

EAFR-101 65C2010G03 Point Sensor unit

EAFR-101D 65C2010G04 Point Sensor unit, DIN Rail mounted

EAFR-101S 65C2010G05 Point Sensor unit, signaling

EAFR-102 65C2010G06 Fiber loop sensor unit

EAFR-110PB 65C2010G07 Current, point sensor unit, NC Trip Relay

EAFR-110FB 65C2010G08 Current, fiber loop sensor unit, NC Trip Relay

EAFR-101B 65C2010G09 Point Sensor unit, NC Trip Relay

EAFR-101DB 65C2010G10 Point Sensor unit, DIN Rail mounted, NC Trip Relay

EAFR-102B 65C2010G11 Fiber loop sensor unit, NC Trip Relay

EAFR-01-A 65C2011G01 Arc light point Sensor - 8,000 Lux

EAFR-01-B 65C2011G02 Arc light point Sensor - 25,000 Lux

EAFR-01-C 65C2011G03 Arc light point Sensor - 50,000 Lux

EAFR-06-10 65C2013G01 Arc light plastic fiber sensor - 10 m (32.81 ft)




EAFR-06-30 65C2013G05 Arc light plastic fiber sensor - 30 m (93.43ft)



EAFR-07-10 65C2014G01 Arc light glass fiber sensor - 10 m (32.81 ft)




EAFR-07-30 65C2014G05 Arc light glass fiber sensor - 30 m (93.43ft)





EAFR-08-10 65C2015G01 Arc light glass fiber sensor (High Temperature) - 10 m (32.81 ft)




EAFR-08-30 65C2015G05 Arc light glass fiber sensor (High Temperature) - 30 m (93.43ft)





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© 2016 EatonAll Rights ReservedPrinted in USAPublication No. MN026008EN / TBG1251February 2016

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arc sensor user manual - eaton...the fixed light sensitivity of the eafr-07 sensor is 8,000 lux. the...

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