FCC ID: 2A3P5HIFIS1 High Impedance Fault Isolation System (HIFIS)

Overview Electrical Materials Company has developed the High Impedance Fault Isolation System (HIFIS), which is a solution to sensing and clearing high impedance faults on overhead electrical power distribution systems. The High Impedance Fault Isolator System (HIFIS) detects high impedance faults, even under zero fault current conditions, by sensing and analyzing loss of voltage at associated locations on the distribution system. Following positive analysis, HIFIS automatically de-energizes and isolates a live primary downed wire, if the overcurrent protection hasnt initially cleared the downed conductor. Architecture & Function The HIFIS system is built around a Node and Hub architecture. Typical installation would be located on a high voltage overhead primary distribution tap (see schematic of typical installation on page 2). The Nodes constantly monitor the voltage of the 120 volt service on the secondary side of overhead transformers on high voltage power lines and communicate their secondary voltage conditions to a main Hub through encrypted RF. The Hub is located near the overcurrent device at the beginning of the primary distribution tap. The Hub logs voltage status for each associated node. If a Node voltage status is below 85V, it sends an RF signal to the hub. The Hub then transmits RF signal to other associated Nodes to determine their status. The HIFIS is a complementary backup for clearing the overcurrent protection system but it does not replace the overcurrent system. associated Nodes then transmit RF response signals back to the Hub. The Hub receives RF signals and then analyzes them using an EMC proprietary rmware, installed on a circuit board, for possible causes of voltage loss on the associated distribution tap. When the Hub conrms the loss in voltage, the hub microprocessor activates an isolation device. The isolation device is activated by closing 120 volt trip circuit which melts a 6K fuse link which releases a grounded coiled bronze spring. The spring applies a bolted fault to force operation of the overcurrent device, (low or no-spark fuse or recloser by others) which de-energizes the downed primary conductor. Node

(secondary voltage sensing) Antenna Assembly Isolation Assembly Hub

(controlled by firmware on internal circuit board) 1 Communication Specification Antenna Information:

Antenna Type Frequency Gain Vertical Beam Width Horizontal Beam Width Impedance VSWR Connector Radio Characteristics:

Frequency Bandwidth Number of Channels Data Rate Channel Spacing Channel Bandwidth Output Power Transmitter Duty Cycle Modulation Type Hop dwell time & Pseudo Random-Table Radio Module Name Frequency deviation Monopole 824 960 MHz 6 dBi 30 Degrees 360 Degrees 50

< 1.5:1 avg N type female 908 924MHz 9 100 kbits/sec 2 MHz 529 kHz 19 dBm 3%

FSK -2 N/A EFR32MG12 Gecko Multi-Protocol Wireless 50 ppm 2 1/12/22 Materials Company Electrical 14S Elizabeth City, Geinoa WI 53128 Lane FCC ID: 2A3P5HIFIS1 Subject:

FCC Statement to be included in the High Impedance Fault Isolation System's user manual This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1)This device received, may not cause harmful interference and (2) this device interference, operation. that may cause undesired including must accept any interference and found to comply with the limits for a Class A digital device, has been tested to Part 15 of the FCC Rules. interference This equipment purs;uant harmful frequency interference in a particular reception, to correct energy in a residential installation. generates, uses and can radiate to provide reasonable protection against radio These limits are designed This equipment aind used in accordance and, if not installed with the instructions, However, to radio communications. there is no guarantee that interference If this equipment installation. which can be determined the interferen does cause harmful the equipment measures:

ce by one of the following by turning interference to radio off and on, the user is encouraged to try may cause harmful will not occur or television

-Reorient or relocate the receiving antenna.

-Increase the separation between the equipment and receiver.

-Connect connected. the equipment into an outlet on a circuit different from that to which the receiver is

-Consult the dE!aler or an experienced l"adio/TV for help. technician FCC Caution:

compliance Any changes could void the user's or modifications not expressly to operate authority this equipment. approved by the party responsible for

(Sign fhere) Title:

President Email:

tim@rvpedestal.com 3 SCHEMATICS: System overview 4 SCHEMATICS: HUB Schematic Wiring Diagram Close up of Hub wiring 5 SCHEMATICS: NODE Schematic Wiring Diagram 6 HIFIS Hub & Node Installation & Commissioning SECTION I: Hub and Isolation Device Installation 1 Mount Hub enclosure on pole at overhead tap location, where overhead overcurrent isolation device is located. Mount Hub to pole with enclosed pole mounting brackets and hardware, at least 10 6 above the ground. 120V trip lead bottom of switch on bottom of Hub 2 Connect ground wire lead on enclosureto #6 Copper weld that is then connected to pole ground rod (See gures 1 & 2). Note: resistance on ground rod should be 5 ohms or less. If resistance is greater than 5 ohms, drive additional ground rod or use other approved means to obtain a ground of 5 ohms.

#6 Copper Weld:

Dedicated Fault Current path for Isolating Power Fuse power to the Hub via the 120 volt 3 Connect 120 volt utility source source lead on the bottom of the switch box on the bottom of the Hub enclosure. The 120 volt utility power source should be obtained from the secondary side of the overhead transformer and connected to the 120 volt lead. Note:

Make sure the switch is in the OFF position, so that the Hub is not powered on at this time. 7 Hub 120V source lead Hub ground lead

(green) Figure 1

#6 Copper Weld Figure 2

(close up of Hub)

(continued) HIFIS Hub & Node Installation & Commissioning:

SECTION I: Hub and Isolation Device Installation 4 Install spring loaded isolation hardware device on the utility pole in the vicinity of the overhead overcurrent device (low or no spark fuse or recloser), on the same pole as the Hub enclosure. Install phosphor bronze contact arm on load side of expulsion fuse. (See gure 3 and 4). Isolation device hardware shall be installed so that when phosphor bronze spring is fully extended, spring can make contact with load-side contact point (aka: grounding spring catcher) on overcurrent device. (See gure 4). Isolation Device to #6 copper weld pole ground in 5 Connect green #10 trip ground lead from junction box. Note: The green trip ground lead is in series with 6 K fuse element, immediately following the 6 K fuse control element that holds the phosphor bronze spring in tension. (See Schematic Hub wiring diagram on page 3 in addition to Figure 4). Device to 120V trip lead from Hub: Note that 6 Connect 120 V trip lead from Isolation the black 120 V trip lead on Isolation Device is connected in series with 6 K fuse element and is connected to the common bus bar. Connect Isolation Device black 120V trip lead to Hub Black 120V trip lead inside junction box installed on pole in the vicinity of Isolation Device (See Figures 4). 7 Connect Isolation Device phosphor bronze spring grounded lead: Note that Isolation Device phosphor bronze spring grounded lead is green #6 copper stranded wire connected to spring coil. !WARNING! This ground wire carries fault current from the overcurrent device (either low spark or no spark fuse or recloser) and therefore, is required to have its own dedicated ground conductor that is connected to its own designated ground rod. Isolation device mounted on pole Figure 3 To Hub Low or No spark fuse Phosphor bronze grounding spring catcher Isolation spring assembly Figure 4

(close up of isolation device) 8 SECTION II: Node Installation overhead tap as the Hub, where it has been determined by utility 1 Mount Node enclosures on poles on the same primary personnel, where secondary voltage should be monitored at transformer locations. Nodes in the HIFIS system have an RF range of 4.x miles from the Hub. 2 Mount Node to pole with enclosed pole mounting brackets and hardware, at least 10 6 above the ground. Node Figure 5 9

(continued) SECTION II: Node Installation enclosure to same pole grounding wire #6 copper weld 3 Connect ground wire lead from bottom of Node that is bonded to pole ground rod. (See gure 6). Note:

Resistance on ground rod should be 5 ohms or less. If resistance is greater than 5 ohms, drive additional ground rod or use other approved means to reduce ground resistance to 5 ohms. Figure 6 Grounding wire

(green) 4 Connect 120 volt source power to Node via black 120 volt source lead on the bottom of the Node. 120 volt source power to be obtained from secondary side of overhead transformer (See gure 7). Note: Node is livened at this stage. Green LED light (see gure 8) on the side of Node should be illuminated when the Node PC Board is livened. Figure 7

(close up of Node enclosure) LED Indicator lights Figure 8

(upper section of Node enclosure) 120V source lead 10

(continued) SECTION II: Antenna Installation Omni-directional antenna Antenna mounting bracket 1 Mount auxiliary antenna to pole mounting bracket with enclosed hardware and mount bracket to pole top area with enclosed lag screws

(See Figure 9). 2 Note: antenna is omni-directional, so no installation. specic positioning is required for antenna Figure 9

(Antenna assembly) Antenna coaxial connection 3 Connect antenna coaxial cable to antenna Figure 10). connector on top of either Hub or Node (See Figure 10 Node coaxial connection 11 SECTION III: Hub & Node Commissioning LED Indicator lights Figure 11

(Hub enclosure) LED Indicator lights Figure 12

(Node enclosure) 1 Once the Hub and associated Nodes are installed according to SECTIONS I & II, turn Hub switch to energized position. A green LED light on side of Hub should be illuminated at this stage

(See Figures 11 & 12 for location of LED indicator lights). will automatically instruct Hub 900 MHz RF transmitter to send 2 Once Hub and associated Nodes are under power, rmware encrypted signals only to the associated Nodes on the tap. Each associated Node on the tap will verify that the Hub signal is correct, return an encrypted RF signal back to the Hub to conrm proper RF communication between the devices on the tap. 3 Hub and Nodes are now commissioned. Note: Green LED lights on exterior of Hub enclosure and all associated Node enclosures shall be illuminated. The HIFIS system is now operational. 120 volt source voltage at a regular interval (every 3 seconds) 4 Under operational mode: Nodes will automatically monitor and report status to Hub with encrypted RF signal. In addition, if any Node detects voltage below 85 volts, an encrypted RF signal will be transmitted to the Hub. The Hub will then transmit encrypted RF signals to other associated Nodes on the tap to request voltage status at their location on the feeder tap. Nodes will then transmit encrypted RF voltage status signal back to Hub. If Hub analysis is negative for a High Impedance Fault, no action is taken by the Hub. If Hub analysis is POSITIVE for a High Impedance Fault, Hub closes 120 volt trip circuit that controls 6K fuse element on spring loaded isolation device, which causes 6K fuse link to operate, releasing the phosphor bronze spring to strike the contact arm on the overcurrent device causing the overhead overcurrent device to operate, which de-energizes downed live primary line. 12

(continued) SECTION III: Hub & Node Commissioning 5 Once downed power line is de-energized, 120 volt source sensing power to Nodes is then also de-energized as a result. At this time, no action is needed to be taken regarding the source power to the Nodes. Note: Hub and Nodes have supercapacitors that will provide 4 minutes of backup power for communication purposes, when the 120 volt source power is de-energized. Note: If the Hub 120 volt source power is lost, then entire tap is already de-

energized upstream of the Hub and the Hub rmware recognizes the condition and Hub takes no action. The downed overhead primary line shall be the focus at this point and that primary overhead line shall be re-

connected. Overhead overcurrent system (low or no spark power fuse) shall be replaced and re-loaded for normal operation. Power to Hub and Nodes shall be restored now and Green LED lights on enclosure exteriors shall be illuminated. HIFIS isolation device support bracket arm should be replaced with new pre-

loaded isolating spring device which is located on the support bracket arm. This replacement bracket with pre-loaded shorting spring is stored in a storage compartment on the side of the utility pole. (See Figure 13). 6 Note: If the Hub 120 volt source power is de-

energized then the entire tap is already de-

energized due to main stem outage and the Hub rmware recognizes the condition and the hub takes no action. In this case, troubleshooting the cause of the primary outage and re-energizing the primary line, shall be the focus at this point by utility personnel. Tap and Hub are restored following re-energization. 7 If Hub or Nodes lose power under the above scenarios 5 and 6, once Hub and Nodes are reenergized commissioning step 2 above will automatically be recommenced between the Hub and associated Nodes to reestablish communication links. System is now fully operational after communication has been re-established Storage compartment w/ replacement bracket Figure 13

(Hub enclosure w/

storage compartment) 13 SECTION IV: Troubleshooting Hub LED showing an error state Figure 14

(Hub enclosure) Node LED showing an error state Figure 15

(Node enclosure) 1 Note: at any time following installation of the HIFIS system, if any Hub or Node enclosure has its Red LED illuminated on the side of the enclosure, this is a notication that the device is malfunctioning. 2 If Hub has Red LED illuminated, (See Figure 14) turn switch power to OFF and wait 5 minutes for super capacitors to discharge. Then, turn power back to ON position. If Green light is now illuminated, no further action is required. If Red LED is still illuminated, remove Hub enclosure from pole and replace Hub enclosure. The replacement Hub enclosure must be pre-programmed to recognize associated Nodes when 120 volt source power is connected to it. Hub and associated Nodes will follow commissioning step number 2 until system is operational. If Hub is still not operational at this time, please call (262) 279-3812, and a technician will further assist you. 3 If Node has Red LED illuminated, (See Figure 15) disconnect 120 volt power lead on PC Board and wait 5 minutes for super capacitors to discharge. Then re-install 120 volt power lead to connector on PC Board. If Green LED is now illuminated, no further action is required. If Red LED is still illuminated, remove Node enclosure from pole and replace with a replacement Node enclosure. Replacement Node enclosure must be pre-

programmed to recognize associated Hub and Nodes when 120 volt source power is connected to it. Hub and associated Nodes will follow commissioning step number 2 until system is operational. If Node is still not operational at this time, please call (262) 279-3812, and a technician will further assist you. 14

1 2 3 4 A B C D E 2.00in FCC ID: 2A3P5HIFIS1 MODEL: HIFIS1 i n 0 0 1

. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This device may not cause harmful interference and

(2) This device must accept any interference received, including interference that may cause undesired operation. Notes:

1. LABEL MATERIAL: POLYESTER 2. LABEL SIZE TOLERANCE: 10%

3. REAR ADHESIVE: PERMANENT AFFIXING 4. BACKROUND COLOR: WHITE 5. TEXT COLOR: BLACK 6. FONT TYPE: ARIAL, NON-CRITICAL 7. FONT SIZE: NON-CRITICAL A B C PRELIMINARY

(DO NOT BUILD TO PRINT) 5660 Technology Circle Appleton, WI 54914

(920) 733-7381 www.teamsmt.com D ENGINEER:

AJS DATE:

1/13/2022 TITLE:

Electrical Materials Company HIFIS PAGE NO:

DWG NO:

PAGE 1 OF 1 PRT-0718-19-A0.0 E 1 2 3 4

Ll1t2l?.2 Elerctrical Materials ComPanY 145 Elizabeth Lane Genoa CitY, Wl 53128 Re: FCC lD: 2A3P5l-llFlSl subje,ct: Request for permanently withholding from public disclosure the schematics' Block Diagrams'

operational Descriptions and Parts Lists /Tune up Info pursuant to an application for certification'

We,Ei|ectricaIMateria|s,requestthata||Schematics,B|ockDiagrams,operaticlnaIDescriptirrnsandParts Li:;ts / Tune Up Info submitted with the apf rication ior certification be permanentry withheld from public disclosure as per section 0'459 of FCC Rules'

ThisrequestismadeundertheprovisionsofSection0.45T(d)oftheCommission,sRu|es,andSection 5!;2 (bx4) of the Freedom of Information Act. These sections authorize the withholding frorm public insperction, those materials which would be privileged as a matter of law if retained by the person submitting them, and mateniars which wourd not customariry be rereased to the pubric by that person'

ff you have any qurestions, prlease do not hesitate to contact us at (252) 279-38L2'

Greetings, Sincerrely,

(liign here) Tinrothv J O'Reqart

'ltitler: President limaril: tim @rvPedestal.corn llr l' '

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1/72/22 E lectrica I Mlatc.ria ls; Com pa ny 14.5 Elizabeth Lane tGienoa City, Wt S3:t2g Greretings,

'lflhis is a letter of aurthorization to accept Internationaltlompliance Laboratories, LLC., specifically including the employees o1'lnternational compliance Laboratories, LLC., as an Agent for Electrical l/laterialscompany, l45ElizabethLane,Genoacity,wl 53l2g,foraperiodofoneyear,tosign attrlplications berfore the commission on our behalf, to nrake representations to you on our behalf, arnd to receive and exchange data between our comparry and the commission in connecti.n with certific ation of the following Electrical Materials Company product:

Gienr:ral description: The High lmpedance Fault lsolation system is a radio device designed to monitor an electric utillity frigh rroltage primary line via monitoring of secondary voltage and rep.rt infrrrmation to a detsi6;nated head de'vice. In the eventthe High lmpedance Fault lsolation System reports a high irnrpeldance patlh on the prirnary line, typically where the primary line has been downed on the ground and the fault current is low, the system will analyze the situation, and if analysis is positive,, de-energize the high voltagr-' prirnary line by activating an isolation nnechanism, which as a result, operates an overcurrent device, such as an expulsion fuse or recloser. Urrder FCC Docket Number .20780 and General Docket Ntumber 8o-2gzg4 pursuant to part :t 5 of FCC Rules and Regullations. Pletase also accerpt this letten as an attestation that neither Electrical Materials Comparny nor any of its officer:s, direcl,ors, or persons holding 5% or more of the outstanding itu.k o1. shares, vcllling or non- voting, have been denied federal benefits under section 5301 of the Anti-Drug-Abuse act of1988,21 u.s.c. B5:3(a). In addition, Electricar Materiars company will notify the Fr:deral communications commission if, at any iime, the situation changes causing Electrical Materials company to be denied federal benefits. tli llffil;;-ilrv.fufther questions or need additional information, ptease feerfree t. give us a car at

(Sign herer) fimothyJ O'Re,qan Title: President:

Email: tim @ rvpecle:;ta l.conr

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ELECTRICAL Products for the Utility Industry March 8th, 2022 Electrical Materials Company 145 Elizabeth Lane Genoa City, WI 53128 Subject: TCB application submittal Gentlemen:

We, Electrical Materials Company, would like to declare that the application being submitted for the device with FCC ID: 2A3P5HIFIS1, has not been, submitted to another TCB or FCC for certification. If you have any questions, please do not hesitate to contact us at (262)-279-3812. Sincerely,

(Sign here) xX ef Sey I) (LAA , Timothy JO'Regan Title: President Email: tim@rvpedestal.com

ELECTRICA MATERIALS COMPANY ucts for the Utility In Lal 4/20/22 Electrical Materials Company 145 Elizabeth Lane Genoa City, WI 53128 FCC ID:

Subject:

2A3P5HIFIS1 Professional Installation Attestation We, Electrical Materials would like to declare that the product being certified requires professional installation. ag Professional installation must be justified. Description: Special trained utility linemen and technical personnel are required to install and activate the system (device) while maintaining high voltage live service to local area utility customers. The device is to be installed by utility employees or contracted personnel under the direction of an electrical utility. The device provides encrypted data to an associated computer to perform a function to de-energize a downed energized high-voltage conductor that a protective overcurrent device has failed to clear.

(1) These electric utilities are authorized to operate by the state in which they are located. Each electric utilities safety practice is governed by the most recent National Electric Safety Code version accepted by the electric utility in that specific state. The National Electric Safety Code has been in effect since 1913 and reviewed every 5 years by electric utilities authorized to operate in that state. This device is secured in an enclosure with a lock and mounted at a minimum height of 10-1/2 Ft. above ground on a utility owned pole. The transmitter receiver enclosure is accessible only with a vehicle lift or extension ladder. No pole steps

(temporary or permanent) are installed below the 11-foot level. DANGER signs stating: High voltage Warning* are installed on the pole 5 feet above ground, The Transmitter receiver is installed to provide signals to automatically de-energize a live downed high voltage primary conductor. Only the electric utility has legal jurisdiction to perform electrical power associated duties on the pole structure. Ifa telecommunication facility has joint pole use, its work force is restricted to only working on their telecommunication equipment on the specific pole. ELECTRICAL M ERIALS COMPANY 2. Professional installation does not permit use of any antenna with the transmitter; the permitted types of antenna specified as below. ;

Description: Professional installer can select from antenna types listed below. Only the maximum gain of each type is shown. The appliance must be configured correctly to maintain compliance with FCC Rule Part 15 requirement. For more details on each approved antenna please refer to test reports. Ant. Type Connector Antenna Gain Frequency Monopole N-type female 6 dBi 824 960 MHz Monopole N type female 3 dBi 824 960 MHz 3. The applicant should address the following items when justifying professional installation.

(1) To qualify for professional installation, please explain why the hardware is not readily available to average consumer. Description: This product will not be sold directly to the general public through retail store, therefore the hardware is not readily available to average customer. The product will be sold solely either directly to electric utility companies or through authorized distributors which sell equipment to electric utilities.

(2) Marketing Applicant must ensure device cannot be sold via retail to the general public or by mail order. Description: This product and will not be sold directly to the general public through retail store or mail order. The sale of this product will be restricted to sales through authorized distributors which sell to electric utilities or through sales directly to electric utility companies.

(3) Applicant must show that device intended use is not for consumers and general public. Description: Device is for specific industrial/commercial use, in fact solely for use by electrical utilities, for the sole purpose of device to device communication, as part of a high impedance fault isolation system. The function of the high impedance fault isolation system is to analyze high impedance fault conditions on downed high voltage primary lines, and following positive analysis, de-energizes downed live primary conductors owned and operated solely by electric utilities.

(4) Explain what is unique, sophisticated, complex, or specialized about the equipment that REQUIRES it to be installed by a professional installer?

Description: Please be advised that due to the unique electric utility market and function targeted by this product, this product will need special trained professionals to connect this device to electric utility equipment, that is solely owned and operated by the electric utility. The high voltage nature of electric utility equipment requires professional installers employed or authorized by the electric utility to install and Products fo Jtility Industry Operate this equipment. These professional installers also will have to be trained specifically on the installation and use of this equipment. We hereby declare that the product will be distributed through controlled distribution channel, with end user being solely electric utilities, which have special trained professionals to install this product and will not be sold directly to the general public through retail store or mail order. 4. Other professional installation requirements

(1) Installation must be controlled. Description: The product will be distributed through controlled distribution channel solely for electrical utility end users, which has special trained professional to install this product

(2) Installed by licensed professionals. Description: Device sold solely either directly to electric utilities or through authorized distributors who sell equipment to electric utilities. Electrical utilities hires and trains professional installers that need special training in configuring and installing the product.

(3) Installation requires special training. Description: This product in installed in a high voltage environment and the system has a specific function, which is isolating (de-energizing) downed high voltage primary conductors experiencing high impedance fault conditions. The device to device communications are encrypted and devices will only recognize and communicate with other associated devices on an installation that are programmed specifically to communicate with each other. Therefore, special training is essential for correct configuration, installation and operation of this equipment. The system also functions solely with high voltage overcurrent systems, which also requires special training to install properly. Therefore special training is essential for configuring and installing the product.

!f you have any questions, please do not hesitate to contact us at (847) 404-6131 ELECTRICAL |

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(Sign here) Timothy J O'Reqan Title: President Email: timj@electricalmaterialscompany.com

ELECTRICAL _JVLATERIALS COMPANY Products for the Utility Industry 1/12/22 Electrical Materials Company 145 Elizabeth Lane Genoa City, WI 53128 Re: FCC ID: 2A3P5HIFIS1 Greetings, Pursuant to FCC 47 CFR 0.457(d) and 0.459, the applicant requests that a part of the subject of FCC application be held confidential on a short term basis: Internal Photos, External Photos, Test Setup Photos and Users Manual Electrical Materials requests the exhibits selected above as short term confidential be withheld from public view for 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Electrical Materials is also aware that we are responsible to notify CETCB in the event information regarding the product, or the product itself is made available to the public. CETCB will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04- 1705. If you have any questions, please do not hesitate to contact us at (262) 279-3812. Sincerely,

(Sign here) OY py a Timothy J O'Regan Title: President Email: tim@rvpedestal.com