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HomeMy WebLinkAboutMiscellaneous - 1570 Osgood Street IL I GF I'IHY CU—CU14 WE Ut; lb Hrl Hammond Electric MA NU 1H11MZIyJ(Z V. U1 HAMMOND ELECTRIC, Inca DESIGN ® CONTRACTING SERVICE 6V Q. 4 S"+ FACSIMILE COVER SHEET COMPANY: 11 AY� ._ ATTN: AlJ �r FAX NO. S8"�9��" TOTAL PAGES: 12 FROM:p*,� 94*4 DATE: 5- 1-e / Alle 0 74��, /4:1 25 AVCO Road — Haverhill MA — Te : 9 - - — _ _ 78 373 99 79 Fax; 978 5 21 9972 www.hammondelectric.com MAY-20_2014 TUE 07:26 AM Hammond Electric FAX N0. 19785219972 P. 01/16 ® HAMMOND ELECTRIC, Inco DESIGN CONTRACTING SERVICE FACSIMILE COVER SHEET COMPANY: ATTN: � FAX NO. Oqy �O Z TOTAL. PAGES: � FROM: DATE: Avok-1 25 Avco Road — Haverhill, MA — Tel: 978-373-9979 — Fax: 978-521-9972 www.hammondelectric.com _ MAY-20-2014 TUE 07;26 AM Hammond Electric FAX N0. 19785219972 P. 02/16 SOLECTRIA RENEWABLES Solectria Renewables' Anti-Islandin g Test Facility at Osgood Properties May 19, 2014 Michael Kelly Mechanical Engineering Manager Electrical Safety Officer Solectria Ranewables,LL[,360 Merrimack Street,Lawrence,MA 01843 USA•TEL 978-683-9700•Inverters <olectria.com•www.so eectrio.44lr, MAY-20-2014 TUE 07:26 AM Hammond Electric FAX N0, 19785219972 P. 03/16 AL S00"LLECTRIA RENEWABLES Mom raLrmax IN",RunjpC '200A DPUNfJl LOG7e0 IN AtivF.R OWL 1115 �•I Al t21�rusipm PrcoNNECT rf;9DD AT loos ' 8(>88wNN KRo c-ta00ta• in z&vhn N111141111pr.e0o0lee7' VAIN Povxg CONrAc7DR r L16E0 AT 7DDA tlUuLNANN LPs-Ak-eDOav PDI 200A THREE PNAS6 I'ANEWARD VAIN 9NEAMEP AT 70�TH p� FL IND C0NacA FT1�I'o9NErEAR NERS FOR RLDI ANP K82 'App1 suv•J to so eDo op ao1=9 OR GCI. 7aa17w �' rn tl:Nl7 ELANDINC CtL4rA4'T0P OUT 03 DI - OG R6 07 DD WA9 601 400 Du 9c)b00?7 DP Sar 7.%M.N W7 M A0-100FW - aDDA fusiar riscaNNEMC f (JU6fiUANNrLIK-aw-900m, ti aLD1 CLDP t0.p1 RLD2 ILDI 192 "11?; NE LOAD BAW'a 1 AND 7 y ars>;7K LOW D•NKF 1 AND a mt ILDI9.PR INRICTM LOAD Mgt 1 AMI D Facility Intent The Anti-Islanding Test Facility is a purpose-built test facility to administer the IEEE 1547 Unintentional Islanding Test, as described in Section 5.7 of IEEE 1547.1-2005. This test is one of the tests required to certify a grid-tied solar inverter to the UL 1741 standard under the authority of a Nationally Recognized Testing Laboratory (NRTL). The purpose of the Unintentional Islanding Test is to verify that the solar inverter will cease to energize the grid in the case of an unintentional island within a prescribed amount of time and under varying conditions. The unit being tested is designated the Device Under Test (DUT), while the units providing DC power to the DUT are designated the Supplies (SUPS). The equipment used to create the islanding conditions are designated the Islanding Components (ICs) and are comprised of Resistive Load Banks (RLBs), Inductive Load Banks (ILBs) and Capacitive Load Banks(CLBs). A test suite on a DUT can take several weeks to complete, depending on the power rating of the unit as well as the requirements of the NRTL overseeing the test. Facility Construction The Anti-Islanding Test Facility is comprised of a 1200A, 480VAC service fed from the power building into a 1200A rated fusible disconnect with IOOOA Low-Peak fuses.The load side of the disconnect feeds a contactor control cabinet which houses two large power contactors, designated SO and S1. SO is the main contactor and acts to power the facility during the test. It is also designed to deenergize the facility in the case of an emergency by the activation of an Emergency Power Off (EMO) button. When 50 is closed, power is fed to the two SUP units as well as to the line side of S1. S1 is the islanding contactor and acts to create the island condition Solectria Renewables,LLC,360 Merrimack Street,Lawrence,MA 01843 USA•TEL978.683.9700•Inverte.Csflseleetria.com•www.wlectria.coM MAY-20-2014 TUE 07:27 AM Hammond Electric FAX N0. 19785219972 P. 04/16 St"LEL;TK A 0""' P* RENEWA L S between the DUT and the ICs. When S1 is closed, power is fed to the DUT and to all six of the ICs, comprised of two RLBs, two ILSs and two CEBs. The DUT and each SUP has an internal AC OCPD and disconnecting means. Each of the six ICs is supplied by its own 600A rated fusible disconnect. All of the equipment.is permanently installed, with the exception of the DUT and SUP units, which require changeover when a new test sequence is started. Unit Changeover When it is time to execute the Unintentional Islanding test on a new model, it is usually necessary to change out the DUT and the SUP units prior to running the test suite. This is performed by trained technicians and engineers who are qualified to do this work. All of the personnel involved in the changeover are required to be Electrically Qualified individuals under Solectria's Electrical Safety Program, which requires training, written tests and ongoing audits to maintain their status. Under the Program, no Qualified Individual is allowed to work on live equipment unless it is required for troubleshooting, and then only under certain procedures and with appropriate PPE. The task of changing over the units is not in the realm of troubleshooting, so all of the work will be performed in an electrically safe working condition. Personnel performing the changeover will establish an electrically safe working condition as prescribed in the Electrical Safety Program before any work is started. 5nlectria Renewabies,LLC,360 Merrimack street,Lawrence,MA 131843 USA•TEL 978-683.9700•Inverters n xnlectrla.com �nr�rw.solectrva,V+L� I'IHY LU M4 IUt: UI;LI HI71 Hammond Llectric MA NU. lylbOZIMIL r. Ub/lb 9. Electrical Safety Rules Specific to Field Work 9.1. No work can be performed at a customer site alone. 9.1.1.At least two Solectria qualified personnel must be on the site at all times to aid one another in case of an emergency. 9.1.1.1. EXCEPTION: A second individual, knowledgeable in recognizing electrical hazards and appointed by the customer, may serve in the role of the second Solectria qualified personnel. 9.1.2. Personnel must be within sight of one another for the duration of the work. 9.2. No work can be started at a customer's site before the customer communicates a comprehensive list of all electrical hazards at the site. 9.3. No work can be started at a customer's site before electrically safe working conditions are established. 9.3.1. Operating the AC and DC disconnects attached to a PVI series inverter (PVI 10-15, PVI 50-100, etc.) is one method for establishing electrically safe working conditions inside a PVI series enclosure. 9.3.1.1. If work must be performed within the AC or DC disconnect attached to a PVI series inverter(PVI 10-15, PVI 50-100,etc.), electrically safe working conditions must be established in such a way that all AC or DC power is removed from the disconnect prior to the work being started. 9.3.1.1.1. The preferred method of disconnecting DC power will be to utilize disconnecting string combiners in the array, DC disconnects near regular string combiners in the array or DC disconnects near the inverter. 9.3.1.1.2. If none of the methods in 9.3.1.1.1 are available, the removal of DC string combiner fuses will be permitted to establish electrically safe working conditions. DC string combiner boxes can only be opened with full electrical PPE and after verifying that no current is flowing in the string. 9.3.2.The complete disconnection of AC power entering a SGI series inverter (SGI, SGI XT, SGI XTM,SGI M,etc.) is required to establish electrically safe working conditions. 9.3.3.The complete disconnection of DC power entering a SGI series inverter(SGI,SGI XT, SGI XTM,SGI M,etc.) is required to establish electrically safe working conditions. 9.3.3.1. The preferred method of disconnecting DC power will be to utilize disconnecting string combiners in the array, DC disconnects near regular string combiners in the array or DC disconnects near the inverter. 9.3.3.2. If none of the methods in 9.3.3.1 are available,the removal of DC string combiner fuses will be permitted to establish electrically safe working conditions. DC string combiner boxes can only be opened with full electrical PPE and after verifying that no current is flowing in the string. 9.3.4. EXCEPTION: Work that Is infeasible to perform in an electrically safe working condition may be performed if all of the following conditions are met.- 9.3.4.1. et:9.3.4.1.The work only Involves voltage.testing; current testing; measurements using a scope, power meter or power logger;or thermography. 9.3.4.2. Full electrical PPE is worn for the entire duration of the work. 9.3.5. EXCEPTION: Accessing the programming and signal connectors on the rear of power stages within SGI 225-500 and 500PE inverters is allowed without establishing an electrically safe working condition if all of the following conditions are met: 9.3.5.1.The connectors are only accessed from the magnetics side of the enclosure. I'IHY—LU—LU14 IUL U(:Lb flrl Hammond Electric hHX NU 1U(db21ydl2 V. Ub/1b 9.3.5.2. The absence of voltage has been confirmed at the inverter side of the AC breaker and the inverter side of the DC switch. 9.3.5.3. Full electrical PPE is worn for the entire duration of the work. 9.3.5.3.1. EXCEPTION: One glove and glove protector may be removed to access the lock on the connector. 9.4. Solectria personnel are not permitted to do any rewiring work outside of the inverter or to any of the customer connections at the inverter, such as that which may be required to troubleshoot DC ground faults or change AC phase sequence. 9.5. Solectria personnel are not permitted to operate customer-owned electrical equipment. 9.5.1. EXCEPTION: Solectria personnel may operate customer-owned disconnecting means only in order to establish electrically safe working conditions if all of the following conditions are met: 9.5.1.1. The customer has identified ahead of the site visit the proper disconnecting means,either through pictures, labels,maps or a site diagram. 9.5.1.2. The customer has identified ahead of the site visit the proper procedure and order for operating the disconnecting means. 9.5.1.3. The disconnecting means controls AC voltages of 600VAC or less or DC voltages of 1000VDC or less. 9.5.1.4. The customer has given written permission ahead of the site visit to operate said equipment. 9.5.2. EXCEPTION:The disconnecting means are integral to or are part of the original Solectria equipment being serviced. fIHY—CU—CU14 WE U!;Zy HM Hammond Electric MA NU, IyMZIUy(Z F. UI/lb Solectria' Renewables Electrical Safety Program Revision B,January 22,2013 PJB Safety first! IIHY—CU—ZU14 IUh. UI;Zd HM Hammond Llectric NA NU. ldIHbLlddl� f Ud/lb 1. Solectria Renewables' Responsibilities (NFPA 70E 340.7(A)) • Appropriate training and supervision by qualified personnel for: 1. The nature of associated hazards 2. Strategies to minimize hazard 3. Methods of avoiding or protecting against hazard 4. Necessity of reporting any hazardous incident, including near misses • Properly installed equipment • Proper access to equipment • Availability of the correct tools for operation and maintenance • Proper identification and guarding of dangerous equipment • Proper documentation of the test setups and test procedures • Maintenance of a clear and clean work area around the equipment to be worked • Provision of adequate and proper illumination of the work area Annual audit of the entire Electrical Safety Program and at least one lockout procedure 2. Employee Responsibilities (NFPA 70E 340.701) • Continuous alertness and awareness of the possible hazards • Proper use of tools and procedures for work • Informing employer of malfunctioning protective measures,such as faulty or inoperable enclosures and locking schemes • Examine all relevant work documents provided by the employer,especially those documents indicating hazardous components location • Maintaining good housekeeping around the equipment and work space • Reporting any hazardous incident, including"near misses" Safety first! I'IHY—LU—CU14 WE U(:ZJ Hrl Hammond Electric MA NU 1JMZIL JIC t'. UJ/lb 3. Electrical Safety Training 3.1 The company provides electrical safety training within the first 30 days of employment to: • Unqualified Employees(Assembly workers,office staff, etc.) Qualified Employees(Electrical engineers, Inverter Test personnel, Field Service Technicians) 3.2 No one is allowed to work on electrical circuits before he or she has undergone-the training for Qualified Employees and passed a subsequent multiple-choice test. 3.3 All Fmployees will be retrained, as needed. 3.4 Electrical Safety Training attendance sheets and qualification test results are kept on record by the employer. Safety first1 MAY-20-2014 TUE 07:30 AM Hammond Electric FAX N0. 19785219972 P. 10/16 4. General rules 4.1 Electrical Safety rules in this document do not apply to AC or DC voltages below 50V. 4.2 The maximum voltage in the Solectria Renewables facilities is 600V. No employee shall be allowed to work on higher voltages than 600V in the field. 4.3 Every electrical conductor or circuit part is considered energized until proven otherwise(visually disconnected AND with voltmeter). 4.4 No employee qualified or not,shall perform any task that he or she considers being unsafe or risky or he or she does not feel she is qualified for. 4.5 Safety glasses have to be worn on the shop floor and on customer sites at all times. 4.6 No in-house job involving voltages in excess of 50V shall be performed alone.Another employee shall always be present within sight. 4.7 No employee is allowed to work on circuits in excess of 50V while their alertness is recognizably impaired due to illness,fatigue or other reasons.Their manager is to assign them a different task until they have recovered. 4.8 Before any electrical job gets started,the presence of a working phone and defibrillator has to be verified. 4.9 Before any electrical job gets started,the easy access of shutoff mechanism to all energy sources shall be verified. 4.10 Before any electrical job gets started,the presence of current limiting devices to all energy sources shall be verified. S. Job Briefing 5.1 Before starting each job(with the exception of repetitive task and routine work),the employee in charge at Solectria Renewables shall conduct a job briefing with the employees involved. 5.2 The briefing shall cover such issues as hazards associated with the job,work procedures involved,special precautions,energy source controls,and personal protective equipment requirements. Safety firstl l'IHY CU iMq IUL UI ;bU Hfl Hammond t:lectric PHA NU, lylbOelyyli� V. 11/!b 6. Shock and Arc Flash Protection boundaries 6.1 The Protection Boundaries for energized circuits and parts at Solectria Renewables' premises are: • Limited approach boundary:4 ft 0 in. • Restricted Approach Boundary: 1 ft 0 in. 6.2 Unqualified persons shall not be permitted to enter the limited approach boundary only, unless the electric conductors and equipment involved are in an electrical safe work condition (locked out or visibly disconnected and tested with a working voltmeter). 6.3 A barrier must be put in place by a qualified person energizing the conductors to keep unqualified people out of this area. 6.4 Readings off of equipment within the limited approach boundary must be done by an electrically qualified person. 6.5 Any maintenance work,repair work,wiring work on inverters within the limited approach boundary is not permitted. 6.6 Qualified persons may enter the Limited approach boundary only if all of the following conditions are met: • There is no possibility the task can be performed in electrically safe work conditions(locked out or visibly disconnected and tested with a working voltmeter),such as thermography • 20cal/cm2 arc rated coverall or shirt/pants,face shield, hard hat,safety glasses,ear canal inserts, leather work shoes are worn 6.7 Qualified persons may enter the Restricted Approach boundary only if all of the following conditions are met: • There is no possibility the task can be performed in electrically safe work conditions(locked out or visibly is connected and tested with a working voltmeter),such as trouble shooting an inverter • Rubber and/or leather gloves are in use • Insulated tools are in use • 20cal/cm2 arc rated coverall or shirt/pants,face shield, hard hat,safety glasses, ear canal inserts, leather work shoes are worn 6.8 All of the above precautions apply to Solectria Renewables'premises as well as field service work. If higher voltages are present in the field,the limited approach boundary and restricted approach boundary have to be increased to meet NFPA 130.2(C). If more than 100kA cycles of fault current are available and increased are flash protection boundary shall be calculated in the field. Safety first! IIHY—LU—M4 IUB. U1;J1 HM Hammond Llectric MA NU IyIMMl IZ t' 1C/1b 7. Lockout procedure 7.1 Purpose This procedure establishes the minimum requirements for lockout of electrical energy sources. It Is to be used to ensure that conductors and circuit parts are disconnected from sources of electrical energy, locked (tagged), and tested before work begins where employees could be exposed to dangerous conditions. Sources of stored energy, such as capacitors or springs, shall be relieved of their energy, and a mechanism shall be engaged to prevent the re-accumulation of energy. 7.2 Responsibility All employees shall be instructed in the safety significance of the lockout procedure. All new or transferred employees and all other persons whose work operations are or might be in the area shall be instructed in the purpose and use of this procedure. The Electrical Safety Officer (ESO) shall ensure that appropriate personnel receive instructions on their roles and responsibilities. All persons installing a lockout device shall have their name and cell phone number on the tag. 7.3 Preparation for Lockout 7.3.1 Review current diagrammatic drawings (or other equally effective means), tags, labels, and signs to identify and locate all disconnecting means to determine that power is interrupted by a physical break and not deenergized by a circuit interlock. Make a list of disconnecting means to be locked. 7.3.2 Review disconnecting means to determine adequacy of their interrupting ability. Determine if it will be possible to verify a visible open point, or if other precautions will be necessary. 7.3.3 Review other work activity to identify where and how other personnel might be exposed to sources of electrical energy hazards. Review other energy sources in the physical area to determine employee exposure to sources of other types of energy. Establish energy control methods for control of other hazardous energy sources in the area. 7.3.4 Provide an adequately rated voltage detector to test each phase conductor or circuit part to verify that they are deenergized. Provide a method to determine that the voltage detector is operating satisfactorily. 7.3.5 Where the possibility of induced voltages or stored electrical energy exists, call for grounding the phase conductors or circuit parts before touching them. Where it could be reasonably anticipated that contact with other exposed energized conductors or circuit parts is possible, call for applying ground connecting devices. safety first IIHT N CU14 IUC UI 1d till Ilammond CIectrIC rNA IYU, r. uc RENEWABLES Solectria Renewables' Anti-Islanding Test Facility at Osgood Properties May 19, 2014 Michael Kelly Mechanical Engineering Manager Electrical Safety Officer Solectrla Renewables,LLC,360 Merrimack Street,Lawrence,MA 01843 USA 9 TEL 978-683.9700•Invcrters@solectria.com•y�wyni M1�lectri-a.cam MAY-20-2014 TUE 07; 19 AM Hammond Electric FAX N0, 19785219972 P. 03 SuLECTRIA RENEWA L S PAW aEcrwlcr.D1FivsTNurlueL 1200 eR[AN EA =170 IN POWER dulLdIG i 120DA RIJulA6 P6CONNW f'L15rP AT moo M=WANN uPP-0-40DOEP MNN Fvffl t OONrACTOR D2 LI FLGED AT 2LE�aIscaNNccr nl.6,Trunn LP6-DR-noun PAI 20OA TWEE WASE PANaBOAM MAIN BRGMEN Ae ZDDA (PI]d1 THREE POLE BRFj�AEAA PON OLD1 ANO RLB2 EDP 1 Bol.0 •I W`�—I (hN AND CONTROL POIvEB W Doo an 6GI Do011r DR W 760YI&I .� IM dZMN NI/NDINC LYINTAMA AJI L------1---, BUT cGI A=oa SRI 500T OR BG 9Do11TN an PVI Da-1033 lie ^ DA DI DL on DT DO OODDAD MAIM DICOONpl.Clc f j f ,ADI FUEu AT euaA Wr&'Amo LPwOw-scow- aD+ cLEre FLdt ALEu 1101 n82 C I IACD7w LOAD DANID 1 MVD 2 I-MITN Iq!!;67ry7:LDAs oANKG 1 AND 2 IL01JIM Facility Intent tNWA-1 T LOAD PANIC 1 Ana 7 The Anti-Islanding Test Facility is a purpose-built test facility to administer the IEEE 1547 Unintentional Islanding Test, as described in Section 5.7 of IEEE 1547.1-2005. This test is one of the tests required to certify a grid-tied solar inverter to the UL 1741 standard under the authority of a Nationally Recognized Testing Laboratory (NRTL). The purpose of the Unintentional Islanding Test is to verify that the solar inverter will cease to energize the grid in the case of an unintentional island within a prescribed amount of time and under varying conditions. The unit being tested is designated the Device Under Test (DUT), while the units providing DC power to the DUT are designated the Supplies (SUPS). The equipment used to create the islanding conditions are designated the Islanding Components (ICs) and are comprised of Resistive Load Banks (RLBs), Inductive Load Banks (ILSs) and Capacitive Load Banks(CLBs). A test suite on a DUT can take several weeks to complete, depending on the power rating of the unit as well as the requirements of the NRTL overseeing the test. Facility Construction The Anti-Islanding Test Facility is comprised of a 1200A, 480VAC service fed from the power building into a 1200A rated fusible disconnect with 1000A Low-Peak fuses. The load side of the disconnect feeds a contactor control cabinet which houses two large power contactors, designated SO and S1. SO is the main contactor and acts to power the facility during the test. It is also designed to deenergize the facility in the case of an emergency by the activation of an Emergency Power Off (EMO) button. When SO is closed, power is fed to the two SUP units as well as to the line side of S1. Sl is the islanding contactor and acts to create the island condition Solectrla Ranewables,LL[,360 Merrimack Street,Lawrence,MA 01843 USA 9 TEL 978-693-9700•JO,vS,rLL rs@solectria.com•www;S 1E�4 it Isom MAY-20-2014 TUE U'020 Aft Hammond Electric hAX NU N(bbMU12 V. U4 RENEWABLES between the DUT and the ICs. When S1 is closed, power is fed to the DUT and to all six of the ICs, comprised of two RIBS,two 1LBs and two CLBs. The DUT and each SUP has an internal AC OCPD and disconnecting means. Each of the six ICs is supplied by its own 600A rated fusible disconnect, All of the equipment is permanently installed, with the-exception of the DUT and SUP units,which require changeover when a new test sequence is started. Unit Changeover When it is time to execute the Unintentional Islanding test on a new model, it is usually necessary to change out the DUT and the SUP units prior to running the test suite. This is performed by trained technicians and engineers who are qualified to do this work. All of the personnel involved in the changeover are required to be Electrically Qualified individuals under Solectria's Electrical Safety Program, which requires training, written tests and ongoing audits to maintain their status. Under the Program, no Qualified Individual is allowed to work on live equipment unless it is required for troubleshooting, and then only under certain procedures and with appropriate PPE. The task of changing over the units is not in the realm of troubleshooting, so all of the work will be performed in an electrically safe working condition. Personnel performing the changeover will establish an electrically safe working condition as prescribed in the Electrical Safety Program before any work is started. Solectda Ranawablee,LL[,360 Merrimack Street,Lawrence,MA 01843 USA•TEL 978-683.9700•Inverters@solectrla.com,•ww1Y„olectria.cam IIHY—ZU—CU14 IUt UI ;CU Hfl Hammond t:lectric rH11 NU. Id(OOC100iC r uo 9. Electrical Safety Rules Specific to Field Work 9.1. No work can be performed at a customer site alone. 9.1.1.At least two Solectria qualified personnel must be on the site at all times to aid one another In case of an emergency. 9.1.1.1. EXCEPTION: A second individual, knowledgeable in recognizing electrical hazards and appointed by the customer, may serve in the role of the second Solectria qualified personnel. 9.1.2. Personnel must be within sight of one another for the duration of the work. 9.2. No work can be started at a customer's site before the customer communicates a comprehensive list of all electrical hazards at the site. 9.3. No work can be started at a customer's site before electrically safe working conditions are established. 9.3.1. Operating the AC and DC disconnects attached to a PVI series inverter (PVI 10-15, PVI 50-100, etc.) is one method for establishing electrically safe working conditions inside a PVI series enclosure. 9.3.1.1. If work must be performed within the AC or DC disconnect attached to a PVI series inverter(PVI 10-15, PVI 50-100, etc.), electrically safe working conditions must be established in such a way that all AC or DC power is removed from the disconnect prior to the work being started. 9.3.1.1.1.The preferred method of disconnecting DC power will be to utilize disconnecting string combiners in the array, DC disconnects near regular string combiners in the array or DC disconnects near the inverter. 9.3.1.1.2. If none of the methods in 9.3.1.1.1 are available, the removal of DC string combiner fuses will be permitted to establish electrically safe working conditions. DC string combiner boxes can only be opened with full electrical PPE and after verifying that no current is flowing in the string. 9.3.2.The complete disconnection of AC power entering a SGI series inverter(SGI,SGI XT,SGI XTM,SGI M,etc.) is required to establish electrically safe working conditions. 9.3.3.The complete disconnection of DC power entering a SGI series inverter(SGI, SGI XT,SGI XTM,SGI M,etc.)is required to establish electrically safe working conditions. 9.3.3.1.The preferred method of disconnecting AC power will be to utilize disconnecting string combiners in the array, DC disconnects near regular string combiners in the array or DC disconnects near the inverter. 9.3.3.2. If none of the methods in 9.3.3.1 are available,the removal of DC string combiner fuses will be permitted to establish electrically safe working conditions. DC string combiner boxes can only be opened with full electrical PPE and after verifying that no current is flowing in the string_ 9.3. 1. EXCEPTION: Work that is infeasible to perform in an electrically safe working condition may be performed if all of the following conditions are met: 9.3.4.1. The work only involves voltage 't'esting; current testing; measurements using a scope, power meter or power logger;orthermography. 9.3.4.2. Full electrical PPE is worn for the entire duration of the work. 9.3.5. EXCEPTION: Accessing the programming and signal connectors on the rear of power stages within SGI 225-500 and SOOPE inverters is allowed without establishing an electrically safe working condition if all of the following conditions are met: 9.3.5.1. The connectors are only accessed from the magnetics side of the enclosure. 11HY—CU—GU14 IUt U(;C1 HI"I Hammond f.lectric MA NU. 1U(bbeM(L V. Ub 9.3.5.2. The absence of voltage has been confirmed at the inverter side of the AC breaker and the inverter side of the DC switch. 9.3.5.3. Full electrical PPE is worn for the entire duration of the work,. 9.3.5.3.1. EXCEPTION: One glove and glove protector may be removed -to access the lock on the connector. 9.4. Solectria personnel are not permitted to do any rewiring work outside of the inverter or to any of the customer connections at the inverter, such as that which may be required to troubleshoot DC ground faults or change AC phase sequence. 9.5.Solectria personnel are not permitted to operate customer-owned electrical equipment. 9.5.1. EXCEPTION: Solectria personnel may operate customer-owned disconnecting means only in order to establish electrically safe working conditions if all of the following conditions are met: 9.5.1.1. The customer has identified ahead of the site visit the proper disconnecting means,either through pictures, labels,maps or a site diagram. 9.5.1.2. The customer has identified ahead of the site visit the proper procedure and order for operating the disconnecting means. 9.5.1.3.The disconnecting means controls AC voltages of 600VAC or less or DC voltages of 1000VDC or less. 9.5.1.4.The customer has given written permission ahead of the site visit to operate said equipment. 9.5.2. EXCEPTION: The disconnecting means are integral to or are part of the original Solectria equipment being serviced. MAY-20-2014 TUE 07:21 AM Hammond Electric FAX N0. 19785219972 P. 07 Solectria ' Renewables Electrical Safety Program Revision B,January 22 2013 PJR Safety firstl I'IHY CU—LU14 IUL Ul;L2 hrl Hammond Electric PHA NU 1J(HbL1JJl'L V. UH r 1. Solectria Renewables' Responsibilities (NFPA 70E 340.7(A)) • Appropriate training and supervision by qualified personnel for: I. The nature of associated hazards 2. Strategies to minimize hazard 3. Methods of avoiding or protecting against hazard 4. Necessity of reporting any hazardous incident, including near misses • Properly installed equipment • Proper access to equipment • Availability of the correct tools for operation and maintenance • Proper identification and guarding of dangerous equipment • Proper documentation of the test setups and test procedures • Maintenance of a clear and clean work area around the equipment to be worked • Provision of adequate and proper illumination of the work area • Annual audit of the entire Electrical Safety Program and at least one lockout procedure 2. Employee Responsibilities (NFPA 70E 340.7(B)) • continuous alertness and awareness of the possible hazards • Proper use of tools and procedures for work • Informing employer of malfunctioning protective measures, such as faulty or inoperable enclosures and locking schemes • Examine all relevant work documents provided by the employer,especially those documents indicating hazardous components location • Maintaining good housekeeping around the equipment and work space • Reporting any hazardous incident, including"near misses" Safety first! MAY-20-2014 TUE 07;22 AM Hammond Electric FAX N0. 19785219972 P. 09 3. Electrical Safety Training 3.1 The company provides electrical safety training within the first 30 days of employment to: O Unqualified Employees(Assembly workers, office staff, etc_) • Qualified Employees(Electrical engineers, InverterTest personnel, Field Service Technicians) 3.2 No one is allowed to work on electrical circuits before he or she has undergone the training for Qualified Employees and passed a subsequent multiple-choice test. 3.3 All Employees will be retrained, as needed. 3.4 Electrical Safety Training attendance sheets and qualification test results are kept on record by the employer. Safety first MAY-20-2014 TUE 07:23 AM Hammond Electric FAX N0. 19785219972 P. 10 4. General rules 4.1 Electrical Safety rules in this document do not apply to AC or DC voltages below SOV. 4.2 The maximum voltage in the Solectria Renewables facilities is 600V. No employee shall be allowed to work on higher voltages than 600V in the field. 4.3 Every electrical conductor or circuit part is considered energized until proven otherwise(visually disconnected AND with voltmeter). 4.4 No employee qualified or not,shall perform any task that he or she considers being unsafe or risky or he or she does not feel she is qualified for. 4.5 Safety glasses have to be worn on the shop floor and on customer sites at all times. 4.6 No in-house job involving voltages in excess of 50V shall he performed alone.Another employee shall always be present within sight. 4.7 No employee Is allowed to work on circuits in excess of 50V while their alertness Is recognizably impaired due to illness,fatigue or other reasons.Their manager is to assign them a differenttask until they have recovered. 4.8 Before any electrical job gets started,the presence of a working phone and defibrillator has to be verified. 4.9 Before any electrical job gets started,the easy access of shutoff mechanism to all energy sources shall be verified. 4.10 Before any electrical job gets started,the presence of current limiting devices to all energy sources shall be verified. S. Job Briefing 5.1 Before starting each job(with the exception of repetitive task and routine work),the employee in charge at Solectria Renewables shall conduct a job briefing with the employees involved. 5.2 The briefing shall cover such issues as hazards associated with the job,work procedures involved, special precautions,energy source controls,and personal protective equipment requirements. Safety first. 1"IHY—LU—M4 WE UI;Cd HPI Hammond Electric MX NU 1y1HbMV2 r 6. Shock and Arc Flash Protection boundaries 6.1 The Protection Boundaries for energized circuits and parts at Solectria Renewables' premises are: • Limited approach boundary:4 ft 0 in. • Restricted Approach Boundary: 1 ft 0 in. 6.2 Unqualified persons shall not be permitted to enter the limited approach boundary only,unless the electric conductors and equipment involved are in an electrical safe work condition(locked out or visibly disconnected and tested with a working voltmeter). 6.3 A barrier must be put in place by a qualified person energizing the conductors to keep unqualified people out of this area. 6.4 Readings off of equipment within the limited approach boundary must be done by an electrically qualified person. 6.5 Any maintenance work, repair work, wiring work on inverters within the limited approach boundary is not permitted. 6.6 Qualified persons may enter the Limited approach boundary only if all of the following conditions are met: • There is no possibility the task can be performed in electrically safe work conditions (locked out or visibly disconnected and tested with a working voltmeter),such as thermography • 20cal/cm2 arc rated coverall or shirt/pants,face shield, hard hat,safety glasses,ear canal inserts, leather work shoes are worn 6.7 Qualified persons may enter the Restricted Approach boundary only if all of the following conditions are met: • There is no possibility the task can be performed in electrically safe work conditions(.locked out or visibly is connected and tested with a working voltmeter),such as trouble shooting an inverter • Rubber and/or leather gloves are in use • Insulated tools are in use • 20cal/cm2 arc rated coverall or shirt/pants,face shield, hard hat,safety glasses,ear canal inserts, leather work shoes are worn 6.8 All of the above precautions apply to Solectria Renewables'premises as well as field service work. If higher voltages are present in the field,the limited approach boundary and restricted approach boundary have to be increased to meet NFPA 130.2(C). If more than 10okA cycles of fault current are available and increased arc flash protection boundary shall be calculated in the field. Safety firstl [M7 [2] connecting devices. Safety first PINY CU CU14 IUt: UI 'IC4 till Hammond Llectric VMA ICU IdIdOCIddIL r, 1C I (9)Simple lockout (10) Using single line and diagrammatic drawings to identify sources of energy (11) Use of tags and warning signs (12) Release of stored energy (13) Personnel accounting methods (14) Grounding needs and requirements (15) Safe use of voltage detecting instruments S. Work on batteries 8.1 Work on batteries can only be performed by personnel that received specific training for this purpose. 8.2 The use of insulated tools is mandatory,even for voltages below SOV. 9. Electrical Safety Rules specific to Inverter field service work 9.1 No work can be started at a customer's site before the customer communicates a comprehensive list of all electrical hazards at the site. 9.2 No work can be started at a customer's site before the electrically safety work conditions are established (lockable disconnects).The removal of DC string combiner fuses will be permitted and acceptable to establish electrically safe work conditions. 9.3 DC string combiner boxes can only be opened with full shock and arc flash protection. 9.4 Customer service personnel are not allowed to work on AC service panels at any customer's site,with the exception of turning off AC breakers. 9.5 Customer service personnel are not allowed to do any rewiring work,such as that which may be required to trouble shoot DC ground faults or change AC phase sequence on commercial inverters. Revision Nature of changes Approved by Release date A Initial release MZM 11/30/2011 B Added Employee Acknowledgement signoff page PJB 01/22/2013 Safety first( nHY—CU—CU14 IUL UI;C4 HPI Hammond t:lectric MA NU lVbbZIyVZ V. lb Remove this sheet and submit to Human Resources Manager. Keep the rest for yourself. EMPLOYEE ACKNOWLEDGEMENT have read and understand Solectria Renewables' Electrical Safety Program. I agree to follow this procedure while conducting my job. If I have any questions, I will bring these to the attention of my supervisor. Printed Name Signature Date Safety firstl IIHT CU N14 I= UI .JC HN Hammond r-lectr ►c PHA NU lyltS�Llyyl� f. l�/!b 7.4 Simple Lockout The simple lockout procedure will involve all sections of this procedure. 7.5. Sequence of Lockout System Procedures 7.5.1 The employees shall be notified that a lockout system is going to be implemented and the reason therefore. The qualified employee implementing the lockout shall know the disconnecting means location for all sources of electrical energy and the location of all sources of stored energy. The qualified person shall be knowledgeable of hazards associated with electrical energy. 7.5.2 If the electrical supply is energized, the qualified person shall deenergize and disconnect the electric supply and relieve all stored energy. 7.5.3 The qualified person shall then lockout all disconnecting means with lockout devices. A hasp is required on all lockouts, even if the intention is for a single lockout to be used. All employees involved in working on the equipment must apply their personal lockout device to the hasp. 7.5.4 Attempt to operate the disconnecting means to determine that operation is prohibited. 7.5.5 A voltage-detecting instrument shall be used. Inspect the instrument for visible damage. Do not proceed if there is an indication of damage to the instrument until an undamaged device is available. 7.5.6 Verify proper instrument operation and then test for absence of voltage. 7.5.7 Verify proper instrument operation after testing for absence of voltage. 7.5.8 Where required, install grounding equipment/conductor device on the phase conductors or circuit parts, to eliminate induced voltage or stored energy, before touching them. Where it has been determined that contact with other exposed energized conductors or circuit parts is possible, apply ground connecting devices rated for the available fault duty. 7.5.9 The equipment and/or electrical source is now locked out. Safety firstl HHT CU N14 I= UI -.3C Hfl Hammond C.lectric rHA NU. IUWDClHylL r 14/in 7.6 Restoring the Equipment and/or Electrical Supply.to Normal Condition. 7.6.1 After the job or task is complete,visually verify that the job or task is complete. 7.6.2 Remove all tools, equipment, and unused materials and perform appropriate housekeeping. 7.6.3 Remove all grounding equipment/conductor/devices. 7.6.4 Notify all personnel involved with the job or task that the lockout is complete,that the electrical supply is being restored, and to remain clear of the equipment and electrical supply. 7.6.5 Perform any quality control tests or checks on the repaired or replaced equipment and/or electrical supply. 7.6.5 Remove lockout devices by the person who installed them. 7.6.7 Notify the equipment and/or electrical supply owner that the equipment and/or electrical supply is ready to be returned to normal operation. 7.6.8 Return the disconnecting means to their normal condition. 7.7 Procedure Involving More Than One Person. For a simple lockout and where more than one person is involved in the job or task, each person shall install his or her own personal lockout device. 7.8 Procedure Involving More Than One Shift. When the lockout extends for more than one day, the lockout shall be verified to be still in place at the beginning of the next day. 7.9. Electrical Safety Officer(ESO) 7.9.1 The Electrical Safety Officer is ultimately responsible for the implementation and enforcement of this lockout procedure. 7.9.2 The Electrical Safety Officer can install locks/tags, or direct their installation on behalf of other employees. Safety first I"IHT CU CU14 IUC Ul .o3 HN Hammond C.lectric MA NU ldlbOelddle t'. 10/10 (9)Simple lockout (10) Using single line and diagrammatic drawings to identify sources of.energy (11) Use of tags and warning signs (1 2) Release of stored energy (13) Personnel accounting methods (14)Grounding needs and requirements (15)Safe use of voltage detecting instruments 8. Work on batteries 8.1 Work on batteries can only be performed by personnel that received specific training for this purpose. 8.2 The use of insulated tools is mandatory, even for voltages below 50V. 9. Electrical Safety Rules specific to Inverter field service work 9.1 No work can be started at a customer's site before the customer communicates a comprehensive list of all electrical hazards at the site. 9.2 No work can be started at a customer's site before the electrically safety work conditions are established (lockable disconnects).The removal of DC string combiner fuses will be permitted and acceptable to establish electrically safe work conditions. 9.3 DC string combiner boxes can only be opened with full shock and arc'Flash protection. . 9.4 Customer service personnel are not allowed to work on AC service panels at any customer's site,with the exception of turning off AC breakers. 9.5 Customer service personnel are not allowed to do any rewiring work,such as that which may be required to trouble shoot DC ground faults or change AC phase sequence on commercial inverters. Revision Nature of changes Approved by Release date AInitial release MZM 11/30/2011 s Added Employee Acknowledgement signoff page PJB 01/22/2013 Safety first) my—n—a14 WE U(;JJ HM Hammond Electric hHA NU. 18(6b21U8(2 V. 1b/1b �9 .i Remove this sheet and submit to Human Resources Manager. Keep the rest for yourself. EMPLOYEE ACKNOWLEDGEMENT I have read and understand Solectria Renewables' Electrical Safety Program. I agree to follow this procedure while conducting my job. If I have any questions, I will bring these to the attention of my supervisor. Printed Name Signature Date Safetyfirst!