KEMA TEST REPORT

Copyright: Only integral reproduction of this report is permitted without written permission from DNV GL. Electronic copies as PDF or scan of this report may be available and have the status “for information only”. The sealed and bound version of the report is the only valid version.

KEMA TEST REPORT 17226-B Object High Voltage Equal Potential Grounding Mats Type EPZ Grounding Grates Serial No. N/A

43 kA, rms – 60 Hz – 1 Client EPZ Mats

8045 Dawnwood Avenue Canton, Ohio 44721

Manufacturer EPZ Mats 8045 Dawnwood Avenue Canton, Ohio 44721 *)

Tested by KEMA-Powertest LLC,

4379 County Line Road Chalfont, PA 18914, USA

Date of tests 27 October 2017

Test specification The tests have been carried out in accordance with client's instructions.

Remarks The test object was subjected to short-circuit current withstand.

KEMA-Powertest, LLC

Victor Savulyak Head of Section, Operations KEMA Laboratories Chalfont,November 30, 2017 DATE

This report applies only to the object tested. The responsibility for conformity of any object having the same type references as that tested rests with the Manufacturer. *) as declared by the manufacturer This report consists of 45 pages in total.

KEMA Laboratories -2- 17226-B

INFORMATION SHEET 1 KEMA Type Test Certificate A KEMA Type Test Certificate contains a record of a series of (type) tests carried out in accordance with a recognized standard. The object tested has fulfilled the requirements of this standard and the relevant ratings assigned by the manufacturer are endorsed by DNV GL. In addition, the object’s technical drawings have been verified and the condition of the object after the tests is assessed and recorded. The Certificate contains the essential drawings and a description of the object tested. A KEMA Type Test Certificate signifies that the object meets all the requirements of the named subclauses of the standard. It can be identified by gold-embossed lettering on the cover and a gold seal on its front sheet. The Certificate is applicable to the object tested only. DNV GL is responsible for the validity and the contents of the Certificate. The responsibility for conformity of any object having the same type references as the one tested rests with the manufacturer. Detailed rules on types of certification are given in DNV GL’s Certification procedure applicable to KEMA Laboratories. 2 KEMA Report of Performance A KEMA Report of Performance is issued when an object has successfully completed and passed a subset (but not all) of test programmes in accordance with a recognized standard. In addition, the object’s technical drawings have been verified and the condition of the object after the tests is assessed and recorded. The report is applicable to the object tested only. A KEMA Report of Performance signifies that the object meets the requirements of the named subclauses of the standard. It can be identified by silver-embossed lettering on the cover and a silver seal on its front sheet. The sentence on the front sheet of a KEMA Report of Performance will state that the tests have been carried out in accordance with …… The object has complied with the relevant requirements. 3 KEMA Test Report A KEMA Test Report is issued in all other cases. Reasons for issuing a KEMA Test Report could be: Tests were performed according to the client’s instructions. Tests were performed only partially according to the standard. No technical drawings were submitted for verification and/or no assessment of the condition of

the object after the tests was performed. The object failed one or more of the performed tests. The KEMA Test Report can be identified by the grey-embossed lettering on the cover and grey seal on its front sheet. In case the number of tests, the test procedure and the test parameters are based on a recognized standard and related to the ratings assigned by the manufacturer, the following sentence will appear on the front sheet. The tests have been carried out in accordance with the client's instructions. Test procedure and test parameters were based on ..... If the object does not pass the tests such behaviour will be mentioned on the front sheet. Verification of the drawings (if submitted) and assessment of the condition after the tests is only done on client's request. When the tests, test procedure and/or test parameters are not in accordance with a recognized standard, the front sheet will state the tests have been carried out in accordance with client’s instructions. 4 Official and uncontrolled test documents The official test documents of DNV GL are issued in bound form. Uncontrolled copies may be provided as a digital file for convenience of reproduction by the client. The copyright has to be respected at all times. 5 Accreditation of KEMA Laboratories The KEMA Laboratories of DNV GL are accredited in accordance with ISO/IEC 17025 by the respective national accreditation bodies. KEMA Laboratories Arnhem, the Netherlands, is accredited by RvA under nos. L020, L218, K006 and K009. KEMA Laboratories Chalfont, United States, is accredited by A2LA under no. 0553.01. KEMA Laboratories Prague, the Czech Republic, is accredited by CAI as testing laboratory no. 1035.


TABLE OF CONTENTS

1 Identification of the object tested ................................................................................ 5

1.1 Ratings/characteristics of the object tested ................................................................... 5

1.2 Description of the object tested ................................................................................... 5

2 General Information .................................................................................................. 6

2.1 The tests were witnessed by ....................................................................................... 6

2.2 The tests were carried out by ...................................................................................... 6

2.3 Accuracy of measurement .......................................................................................... 6

2.4 Notes ...................................................................................................................... 6

3 Legend .................................................................................................................... 7

4 Test Circuit Calibration - 160A symmetrical ................................................................... 8

4.1 Condition before test ................................................................................................. 8

4.2 Test results and oscillograms ...................................................................................... 9

4.3 Condition / inspection after test ................................................................................. 11

5 Electromagnetic Induced Current Withstand Scenario 1 ................................................. 12

5.1 Condition before test ............................................................................................... 12

5.2 Test circuit LAB2467 ................................................................................................ 13

5.3 Photograph before test ............................................................................................. 14

5.4 Test results and oscillograms .................................................................................... 18


6 Electromagnetic Induced Current Withstand Scenario 2 ................................................. 22


6.2 Test circuit LAB2468 ................................................................................................ 23




7 Test Circuit Calibration - 43kA symmetrical ................................................................. 29




8 Electrical Short-Circuit Capacity Test .......................................................................... 33


1.1 Test circuit LAB2469 ................................................................................................ 34




8.5 Photograph after test ............................................................................................... 39


9 Attachments ........................................................................................................... 43

Instrument Information Sheet [1 PAGE]

END OF DOCUMENT PAGE [1 PAGE]


1 IDENTIFICATION OF THE OBJECT TESTED

1.1 Ratings/characteristics of the object tested Number of phases 1 Frequency 60 Hz Short-time withstand current: Earthing circuit 43 kA for 0.17 s

1.2 Description of the object tested High Voltage Equal Potential Grounding Mats – EPZ Grounding Grates


2 GENERAL INFORMATION

2.1 The tests were witnessed by Name Company Ryan Klingelhofer EPZ Mats

8045 Dawnwood Avenue Canton, Ohio 44721

2.2 The tests were carried out by Name Company Emmanuel Ankrah Kresimir Starcevic

KEMA-Powertest LLC, Chalfont PA USA

2.3 Accuracy of measurement The guaranteed uncertainty in the figures mentioned, taking into account the total measuring system, is less than 3%, unless mentioned otherwise. Measurement uncertainty can be verified by reviewing the instrument calibration records. The instruments used are calibrated on a regular basis and are traceable to the National Institute of Standards and Technology.

2.4 Notes Not applicable.


3 LEGEND Phase indications If more than one phase is recorded on oscillogram, the phases are indicated by the digits 1, 2 and 3. These phases 1, 2 and 3 correspond to the phase values in the columns of the accompanying table, respectively from left to right. Explanation of the letter symbols and abbreviations on the oscillograms pu Per unit (the reference length of one unit is represented by the black bar on the oscillogram) ITO Current through test object UTO Voltage across test object UTOresistor Voltage across 1kΩ resistor


4 TEST CIRCUIT CALIBRATION - 160A SYMMETRICAL Standard and date Standard Client’s instructions Test date 27 October 2017

4.1 Condition before test Calibration was performed with shorting bar across test station terminals.


4.2 Test results and oscillograms Overview of test numbers 171027-9002 Remarks -


Test Circuit Calibration - 160A symmetrical

Observations: No visible disturbance. Checking of the prospective current. Client accepted available circuit.

Test number: 171027-9002

Phase -

Current kApeak 0,233

Current, a.c. component, beginning kARMS 0,164

Current, a.c. component, middle kARMS 0,176

Current, a.c. component, end kARMS 0,179

Current, a.c. component, average kARMS 0,173

Duration, current s 1,01


4.3 Condition / inspection after test No visible damage.


5 ELECTROMAGNETIC INDUCED CURRENT WITHSTAND SCENARIO 1

Standard and date Standard Client’s instructions Test date 27 October 2017

5.1 Condition before test Grounding mat new.


5.2 Test circuit LAB2467

N = Neutral ABUB = Auxiliary Back Up Breaker I = Current Measurement

G = Generator MS = Making Switch V = Voltage Measurement

MB = Master Breaker XFMR = Transformer

Xs = Station Reactance TD = Test Device

Supply

Power MVA -

Frequency Hz 60

Phase(s) 1

Voltage kV 5

Current kA 0.16

Remarks: -


5.3 Photograph before test





5.4 Test results and oscillograms Overview of test numbers 171027-9003, 9004 Remarks -


Electromagnetic Induced Current Withstand Scenario 1

Observations: No visible disturbance. Voltage across 1000 Ohms resistor is negligible. Test will be repeated with a high resolution for resistor voltage measurement.


Phase -

Current kApeak -0,234






Resistor Voltage V -



Observations: No visible disturbance. Voltage across resistor is virtually non-existent.


Phase -









5.5 Condition / inspection after test No visible change.


6 ELECTROMAGNETIC INDUCED CURRENT WITHSTAND SCENARIO 2

Standard and date Standard Client’s instructions Test date 27 October 2017

6.1 Condition before test Grounding mat in same condition after previous test.



N = Neutral ABUB = Auxiliary Back Up Breaker XL = Cable simulation reactance

G = Generator MS = Making Switch I = Current Measurement

MB = Master Breaker XFMR = Transformer V = Voltage Measurement

Xs = Station Reactance TD = Test Device

Supply

Power MVA -

Frequency Hz 60

Phase(s) 1

Voltage kV 5

Current kA 0.16

Remarks: -








Observations: No visible disturbance.


Phase -







Resistor Voltage V 1.18


6.5 Condition / inspection after test No visible change.


7 TEST CIRCUIT CALIBRATION - 43KA SYMMETRICAL Standard and date Standard Client’s instructions Test date 27 October 2017

7.1 Condition before test Calibration was performed with shorting bar across test station terminals.




Test Circuit Calibration - 43kA symmetrical

Observations: No visible disturbance.


Phase -









7.3 Condition / inspection after test No visible damage.


8 ELECTRICAL SHORT-CIRCUIT CAPACITY TEST Standard and date Standard Client’s instructions Test date 27 October 2017

8.1 Condition before test Grounding mat is same condition as after electromagnetic induced current withstand test.



G = Generator ABUB = Auxiliary Back Up Breaker TD = Test Device

MB = Master Breaker MS = Making Switch I = Current Measurement

Xs = Station Reactance XFMR = Transformer V = Voltage Measurement

Supply

Power MVA -

Frequency Hz 60

Phase(s) 1

Voltage kV 6.2

Current kA 43

Remarks: -






Electrical Short-Circuit Capacity Test

Observations: Sparks observed.


Phase -







Resistor Voltage V 54.8


8.4 Condition / inspection after test Grounding mats in good condition. Point of connection of grounding cable to clamp (at power source end) was found broken.


8.5 Photograph after test





9 ATTACHMENTS

KEMA-Powertest, Inc.Instrumentation Information Sheet

TEST NO: 17226-B DATE: 11/02/2017

TEST DEVICE: EPZ Mats - High Voltage Equal Potential Grounding Mat

TESTED BY: E. Ankrah, S. Iacovella, D. TolkachCALIBRATION

CODE# TYPE MANUFACTURER MODEL# SERIAL# LAST DUE

PAV37 PNL.VOLTMTR SIMPSON F45-1-34 N/A 10/26/2017 5/14/2018MUL111 DMM METERMAN 37XR 110700488 9/13/2017 4/1/2018DAS17 DAS NI/DEWETRON DEWE-30-16 0195BB69 7/20/2017 2/5/2018ISO118 ISO AMP DEWETRON DEWE-30-16 437712 7/20/2017 2/5/2018

CTX172 ROGOWSKI CT PEM SDS0680 0002-0100A 8/4/2017 2/20/2018ISO126 ISO AMP DEWETRON DEWE-30-16 437720 7/20/2017 2/5/2018VDR84 V.DIVIDER NORTH STAR VD-150 1 4/24/2017 11/10/2017ISO124 ISO AMP DEWETRON DEWE-30-16 437718 7/20/2017 2/5/2018

VDR41 RES.VOL.DIV POWERTEST 189:1 41 5/18/2017 12/4/2017ISO132 ISO AMP DEWETRON DEWE-30-16 437726 7/20/2017 2/5/2018PTX06 P.T. GE JVM5 3737435 10/3/2016 10/3/2018VTD10 VOLT.TRANSD LEM CVS-200 1141194044545/5/2017 11/21/2017

ISO133 ISO AMP DEWETRON DEWE-30-16 437727 7/20/2017 2/5/2018PTX07 P.T. GE JVM5 3737433 10/3/2016 10/3/2018VTD11 VOLT.TRANSD LEM CVS-200 1141194044565/5/2017 11/21/2017ISO134 ISO AMP DEWETRON DEWE-30-16 437728 7/20/2017 2/5/2018

PTX08 P.T. GE JVM5 3737432 10/3/2016 10/3/2018VTD12 VOLT.TRANSD LEM CVS-200 1141194044575/5/2017 11/21/2017

REPORT # 17226-B Instrument Information List

Report # 17226-B Page 45

END OF DOCUMENT

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KEMA TEST REPORT