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Home My WebLink AboutPermit Field Test & Inspection Report 1997-7-1 . NEW WAY ELECTRIC 4202 w. 6th P.O. Box 21503 Eugene. Oregon 97402 . CCB #51088 COMMERCIALJINDUSTRIAL DESIGN. BUILD ESTABLISHED IN 1979 (541) 686-2365 (541) 686.2715 FAA TRANSMITTAL //: '. To: {~f-r 2 +~r.#~~ Date: /h/ ~ 97 dd,j- ~Jd r-/~/ . JOB:' kt--~dd ~A-/~fht(/;'/~f< Re:~~/J.7hnd' ,-h././L~ Attn: ,:/th-tl!/- 0 /~I"Z<r~4l'/~. WE ARE SENDING: ~ATTACHED 0 UNDER SEPARATE COVER VIA o FOR APPROVAL 0 FOR REVIEW & COMMENT 0 RETURNED FOR APPROVAL o FOR YOUR INFORMATION 0 APPROVED 0 RETURNED FOR CORRECTIONS d;'FOR YOUR USE 0 APPROVED AS NOTED 0 o PLEASE RETURN APPROVED COPIES COPIES ~ DESCRIPTION _~/J7///?d' >-Jw/~/I.&Ar~ P4d. C\h ~ f ~".r7 dV/,L - 7 ',. REMARKS: ~,.,o:// 7- 7~ "/ ,./ ~-- PLEASE RESPO, ~Y I, COpy TO ~ BY 7JUu~ . . C"l(>drSt i' . PORTLAND AREA OFFICE . I ()t~;- 4099 SE INTERNATIONAL WAY SUITE 201 MILWAUKIE, OREGON 97222 (503) 653-6781 FAX (503) 659-9733 Independent Testing & Engineering Services for Electrical Power Systems June 3,1997 eti Reference No.:357 5042 New Way Electric 4202 W. 6th Eugene, Oregon 97402 Attention: Mr. Mike Gowins Subject: Ground Fault System Acceptance Test Report Waremart Foods. Springfield, Oregon Dear Mr. Gowins: Please find enclosed two copies of the subject test report. It was our pleasure to be of service to you on this project. If you have any questions, or if we can be of further assistance, do not hesitate to call. Sincerely, 6(~ >t4 Larry Newby Area Manager LN:lk Enclosure . . .. .J . . ~l~ct(o - t~ft inco(po(at~d PORTLAND AREA OFFICE Independent Testing & Engineering Services for Electrical Power Systems 4099 SE INTERNATIONAL WAY SUITE 201 MILWAUKIE, OREGON 97222 GROUND FAULT SYSTEM TEST REPORT (503) 653-6781 FAX (503) 659-9733 ETI REFERENCE NUMBER: 357 5042 DATE: June 4, 1997 CLIENT: New Way Electric 4202 W. 6th Eugene, Oregon 97402 SITE: Waremart Foods 1920 Olympic Street Springfield, Oregon 97477 ATTENTION: Mr. Mike Gowins P.O. NUMBER: 1920 1.0 PURPOSE Performance tests of the ground fault protective equipment are conducted to verify proper installation and operation. Section 230-95(c) of the current National Electrical Code requires an on-site test of all newly installed ground fault systems, as well as the appropriate documentation of such tests and inspections. 2.0 SUMMARY This project was initiated at the request of Mr. Mike Gowins of New Way Electric. All work was performed by Electro Test, Inc. field engineer, Mr. Vernon Habedank on 15 May 1997. The professional and helpful assistance of Mr. Steve Schoonover of New Way Electric was appreciated and assisted in the timely completion of this project. The ground fault protection components were tested and found to be correctly installed. The neutral system is grounded downstream of the neutral disconnect link. Also, relay settings were temporarily made for service energization. The design engineer should be consulted for the final settings. The "as left" settings are 600 amps, with a 0.1 second time delay. Please refer to Section 5 for the results and recommendations relative to this project. . . . . 3.0 EQUIPMENT TESTED AND INSPECTED 3.1 One (1) Instrument Transformers Incorporated, Zero-Sequence Ground Fault System consisting of a Catalogue Number BGFL-159-1200 ground fault relay with adjustable current range from 100 to 1,200 amperes and an adjustable time delay from instantaneous to 1 second, utilized in conjunction with an ITI zero-sequence current sensor for the Main, Electrical Disconnect Switch for this building. 4.0 TEST PROCEDURES 4.1 Ground-Fault Protection Systems 4.1.1 Visual and Mechanical Inspection .01 Visually inspected the components for damage and errors in polarity or conductor routing. . Verified the ground connection was made ahead of the neutral disconnect link and on the line side of any . ground fault system current sensor. . Verified proper neutral sensor polarity to the ground fault system sensing circuitry. . Verified that all phase and neutral system conductors were routed through the sensor in the same direction for zero sequence systems. . Verified that grounding conductors did not pass through the current sensor on zero sequence-type systems. . Verified the grounded conductor was solidly grounded. .02 Verified correct operation of all functions of the self-test panel. .03 Verified adequate capacity of the control power transformer, as it was utilized in this system. .04 The appropriate written records were compiled relating to the operation and test sequences required by Article 230-95 (c) of the current National Electrical Code. eti Reference No: 357 5042 PAGE 2 . . . . 4.1.2 Electrical Tests . Measured the system neutral-to-ground insulation resistance with the neutral disconnect link temporarily removed. The neutral disconnect link was replaced after testing.. .02 Performed the following pickup tests using primary injection: .01 . Verified the ground fault system did not operate at ninety (90%) percent of the pickup setting. . Verified that ground fault pickup was less than one- hundred and twenty-five (125%) percent of setting or 1200 amperes, whichever is smaller. .03 Measured the time delay of the relay at a value greater than the current setting pickup value. .04 Verified proper operation of the ground fault relay during a reduced voltage condition of fifty-five (55%) percent of rated voltage. 4.1.3 Test Values .01 System neutral-to-ground insulation shall be a minimum of one megohm. .02 Relay timing shall be in accordance with manufacturer's specifications, but must be no longer than one second at 3000 amperes. 5.0 RESULTS AND RECOMMENDATIONS The following is a list of problems discovered during this testing project along with any corrective action that was made by etL Those corrections beyond the scope of the project that require your additional corrective action are in bolded text immediately below the discussion of the issue. 5.1 The ground fault protection components were tested and found to be correctly installed and operating satisfactorily. The neutral system is grounded downstream of the neutral disconnect link. Neutral grounds will desensitize the operation of the ground fault system and may cause nuisance tripping. The neutral system ground was traced to the neutral conductor for Circuits #30 and #32 in Panel HB 1. These grounds should be cleared by the contractor, prior to completion of this job. No retest or reinspection by eti is required. eti Reference No: 357 5042 PAGE 3 . . . . 5.2 In the absence of engineering settings, the current pickup setting was left at 600 Amps, as found, and the time delay reduced from the as found setting of 0.6 seconds to 0.1 second, for service energization. ETI accepts no liability for these settings. The design engineer should be consulted for final settings. SUBMITTED BY: Vernon Habedank Field Engineer REVIEWED BY: ~~_L Larry Ne~;-7 Area Manager eti Reference No: 357 5042 PAGE 4 8J~ '" . ~l~ct(o ~ t~Jt GROUND aL T SYSTEM TEST REPORT CLIENT: N&..J U A-I( k/....&L:r7'<. / C LOCATION:, I W4ef:.Jo~'tPr.f?r 1=ooDS SWITCHGEAR DESIGNATION: Ur-! \ F1W I<'JAI,J 5j)r",.",({< IJ all{ ./ . S w rtUl g o'A'R.d. IT"'" r_.}-t~LL8l-!6Gt. G..C." \lPO OS3'Z.."l ~O MAIN QVERCURRENT DEVICE Yr1f'l..U:"LtS lMFGRo o CIRCUIT BREAKER (2g FUSED SWITCH '17""'\,..[ 4>LG: T~~_1-0~~J"~:;~~:~/,9 ICURR~~AG ISYS4ro/~;':' GROUND FAULT SYSTEM I MFGA. o NEUTRAL.GROUNO STRAP I2Sl ZERO -SEOUENCE I ~;r>euM~I1i?~F<>tl-le,eS iN C MODEL ICAT. NO. lPICK-UP RANGE I TIME RANGE ISENSOR/CoT. 66R-lsq f3Gn-IS'1-IUlO lOO/I'WO .l See:... -l.se.e.... _ I T I . AS FOUND SETTING AS LEFT SETTING ..I SETTINGS SUPPLIED BY ,,~ ~J"-Cjt...J' ~3 ~m:<'\':N.,l"OO TIMf. /"S ~l'i~I/:NT /,00 TlME.1.- seL.- ~ l=<>1.A.ND """"re.<r W H.,,J"I"'<Uf .:/ / 7-o~</. !VOL:j;V RiJ'NG (ITl) . SERVICE ENTRANCE CONDUCTORS r-'I MAIN BONDING JUMPER GROUND ELECTRODE CONDUCTORS LtOOtoA<-foI\x ~ C<..A. url,l--E'J\ P'HASE 1-";{ '/~';( I Z-3/0 c.u ~ AWG n INEUTRAL-GROUND LOCATION I CONTROL POWER TRANSFORMER IA:)CORRECT 0 INCORRECT 0 CORRECTED BY CONTRACTOR 3oc> VA MONITOR/TEST PANEL OPERATION OTHER o INCORRECT MCM B -! "'R!SW1TCH REACTION TIME (RT) REDUCED VOLTAGE TEST (55% RATED VOLTAGE) IXJ SECONDS D CYCLES 0- CORRECT 0 INCORRECT I PICK.UP CU RRENT MINUS 25% I ~()AMPS) 1000 AMPS .0' NO TRIP (COR RECTI D TRIP (INCORRECT) I SYSTEM NE"t!TRAL INSULATION RESISTANCE TO GROUND I OTHER o ohM";> - See. V"\o\1:;- "'1 MEGOHMS 4CoI'I>'\/Kt&() NI'.4<Tl'I'\-<..-S I PRIMARY CURRENT AMPERE~TURNS I I I PERCENT PICK.UP TOTAL TIME REACTION TIME RELAY TiME MFGR. TOLERANCE TIME-CURRENT CALIBRATION TESTS ~l{i.b.t?tZZ5 I I \-50 .1..3 Lf X 300 -z.oo . L. 7- . \ I . II . I z.. . I l :t JO% t REMARKS (i) Neu.~ G,,,,,o.vo.lO ,...J>.<..#) Tn "'I'Z.. AWG. IJ,I'1.'"- F"<>K. c.~T"'. 30 ~ 32.. IN P/>JL 1+ & 1. 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