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Introduction

5

Remote Operator Interface provides a browser-based dashboard for commissioning
agents and engineers to access metering and relay telemetry, as well as relay event
information quickly and early without the need for any special software or skillset.
This feature does not interfere with any third-party monitoring or SCADA and may
be disabled (or upgraded) by the customer at any time.

Networking Communications All configurations of the myPV ClearSky are
equipped with an unmanaged 8-Port 10/100BaseT(X) Fast Ethernet switch. All
equipment mentioned above is connected to and IP addressed for networking
communication through this switch by default. (Additional standard options available
below)

Self-Powered & Battery Backed-Up All controls, networking, metering, and
relaying equipment run on a self-contained 24V, 20A power supply that includes
battery backup. In the event of loss-of-grid, the system remains fully operational to
provide telemetry, trip event information and alarming.

IEEE 386 MV Interfaces All configurations of the myPV ClearSky use industry
standard bushing well and inserts MV interfaces. 200A load-break or 600A dead-
break interfaces may be specified at the time of ordering based on facility amperage
requirements. (Additional standard options available below)

Standard Options

The myPV ClearSky Interconnection product line provides standard options to upgrade
and add components in a manner that supports the most frequently requested customer
requests.

Standard Options Include

Revenue Grade Metering Upgrades

[DEFAULT] Basic PQ waveform recording (15th harmonic, 16 samples/cycle, 15 cycle
duration)

[UPGRADE] Advanced PQ waveform recording (63rd harmonic, 16/128/256
sample/cycle, 15-600 cycle duration)

Protection Relay Upgrades

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Содержание ClearSky

Страница 1: ...myPV ClearSky User Manual 1 myPV ClearSky User Manual ...

Страница 2: ... pro You may also contact support via phone or email Support Line M F 9am 5pm Eastern 470 387 9011 Support Email operations solar ops com Contents Introduction Resources Design Considerations Protection Relay Settings Receiving Electrical Terminations Network Integration Pre Energization Checks Initial Energization Operational Testing Commercial Operation Spare Parts Torque Schedules Troubleshooti...

Страница 3: ...as our top priority Built to Last With heavy 11 gauge powder coated steel wide temperature industrial rated electronics and fully integrated in a UL 508a controls facility the product line conforms to the following standards Padmount gear conforms to applicable ANSI IEEE and NEMA standards Constructed with UL or ETL recognized components Equipment Build Standards Built to Last Standard Features St...

Страница 4: ... requirements Additional standard options available below Protection Relaying Reclosing All configurations of the myPV ClearSky use an SEL 751 with specific I O and software features to support the three 3 integrated VFI breakers The SEL 751 shares PTs with the meter but has dedicated protection class CTs for appropriate fault condition monitoring The SEL 751 may not be modified however a reduct r...

Страница 5: ...elaying equipment run on a self contained 24V 20A power supply that includes battery backup In the event of loss of grid the system remains fully operational to provide telemetry trip event information and alarming IEEE 386 MV Interfaces All configurations of the myPV ClearSky use industry standard bushing well and inserts MV interfaces 200A load break or 600A dead break interfaces may be specifie...

Страница 6: ...MV Interfaces on the Solar side dead front to allow for loop feed or passthrough connections Equipment Riser DEFAULT Standard integrated 7 riser OPTION Taller 12 riser Adds an additional 5 of height for MV cable management Solar Side 3 Pole Ganged Load Break Disconnect DEFAULT Not included OPTION Manually operated 600A load break 3 pole ganged disconnect to isolate the myPV ClearSky fro the facili...

Страница 7: ...ring and controls integration The standard myPV ClearSky drawing packages for 15kV 25kV and 35kV products note the height changes to the overall padmount equipment dimensions based on these options The addition of this component alters the overall pad mounting requirements conduit spacing length and weight of the padmount gear These changes are not represented by the standard specifications and re...

Страница 8: ...s well A second wire glass viewing window has been added opposite the first to allow for improved cabinet internal component inspections from the outside The control cabinet now has a dedicated chase to allow for network cable routing via the MV cabinet no external conduit runs are required Metering and Relaying CTs are now clearly labeled for both phase and orientation in the event they are unmou...

Страница 9: ...t Resources page MV Separable Connectors Also referred to as Elbows separable connectors are medium voltage MV components that provide a watertight fully electrically insulated electrical termination for MV conductors on both the Utility and Solar sides of the myPV ClearSky All MV separable connectors support IEEE 386 compliant interfaces Technical Documents MV Separable Connectors Product Line Sp...

Страница 10: ...Manufacturers Include ABB Elastimold PDF Eaton Cooper Power Systems PDF 3M Separable Connectors PDF Product Line Specifications The myPV ClearSky product line is available in three 3 frame sizes that are determined by maximum voltage rating A standard set of options may be added to any of the frame sizes to configure the standard product to meet individual customer requirements The standard produc...

Страница 11: ...earSky 2021 Product Line Representative Cross Section For myPV ClearSky products that have selected to add the option of a Solar Side 3 Pole Ganged Load Break Disconnect the following specifications should be used instead ...

Страница 12: ...Resources 12 ...

Страница 13: ...Product Photos While myPV ClearSky products do vary in size all product frame sizes are arrange in the same manner The following orthographic photos provide a visual reference for common locations of common features ...

Страница 14: ...Resources 14 ...

Страница 15: ...ClearSky is available in three 3 frame sizes that are determined by the facility s line to line voltage rating Applications that have interconnection voltages equal to or below 35kV line to line are supported Determine Your Facility s Voltage Class ...

Страница 16: ...ky has a single set of three 3 revenue grade PTs that are shared for metering and protection relaying functions A fourth control power PT is used for control power discussed in Design Considerations The myPV ClearSky has two sets of three 3 CTs however The first set is dedicated to review grade metering while the second set is dedicated to protective relaying The revenue grade CTs are specified to...

Страница 17: ... requirement ensuring the PT has appropriate accuracy throughout the range of expected current flow 0 to the Export Limit or your Facility is more important CTs similarly step down the interconnection current flow to a range that the meter s inputs can also accept typically a nominal 5A As an example the ratio of a CT e g 300 5 will result in current at the meter of 5A for 300A of current flow The...

Страница 18: ...r of 2 0 will provide measurements of up to 800A before saturating Regardless of what PT or CT ratio is ultimately selected the meter and protection relay devices are configured to understand what instruments are connected via the PTR Potential Transformer Ratio 60 1 60 and CTR Current Transformer Ratio 300 5 60 settings variables The selection of instrument transformers is specific to the applica...

Страница 19: ...Resources 19 ...

Страница 20: ...Resources 20 ...

Страница 21: ...Developers and Engineers and unprecedented level of flexibility regarding installation location While many Customers choose to incorporate the padmount gear into the equipment pad closest to the point of interconnection others choose to locate the myPV ClearSky at the Point of Interconnection POI If you have concerns about the location of the myPV ClearSky s metering and the POI we recommend one o...

Страница 22: ...l termination cabinet conduit locations and open door swings Visit our Technical Documents page by registering on our Support Resources page to access the most up to date myPV ClearSky Mechanical drawings Foundation Type The myPV ClearSky requires a smooth flat horizontal surface to be mounted on that is appropriately designed to support its weight and footprint Common foundations include but are ...

Страница 23: ...on from Utility overhead to Facility underground using either of the following Disconnect e g air blade Fused Cutout Gang Operated Air Break GOAB Consideration should be given to not only the hardware cost of each type of isolation device but also the cost of operation While a qualified technician with appropriate PPE may operate a GOAB from ground level Disconnects and Fused Cutouts especially th...

Страница 24: ...k switch Network cables may be routed into either the Utility Side or Solar Side electrical Termination Cabinets and routed below the myPV ClearSky s enclosed MV busbar cabinet There is an open plenum 3 in height to allow for network cable passthrough to the where the gland is located No external conduit or cabinet penetrations are required Because both the Utility Side or Solar Side electrical Te...

Страница 25: ...ic protection elements or reclosing behaviors Template RDB files are available for download under the myPV pro Support Resources webpage ClearSky RDB template files include 1 Repair Service vs Automatic Mode 2 Power Supply UPS Battery TRIP 3 Single Phase TRIP Support ClearSky RDB template files require customer settings to support 1 Interconnection protection element assignment and settings are re...

Страница 26: ...onfigured is enabled however CLOSE commands are DISABLED TRIP commands are ALLOWED By pushbutton or SCADA the Protection Relay can 3 Phase TRIP Only by pushbutton the Protection Relay cannot 3 Phase CLOSE Only by pushbutton the Protection Relay can 3 Phase CLOSE By pushbutton or SCADA the Protection Relay can 1 Phase TRIP Only by pushbutton the Protection Relay can 1 Phase CLOSE Power Supply UPS B...

Страница 27: ...missioning staff validate proper inverter anti islanding behaviors as required by IEEE 1547 Any single phase A B or C may be toggled OPEN TRIP or CLOSED via pushbutton or SCADA operation by following the procedures described in the section Operational Testing Protection Settings File Loading Solar Ops at the time of device integration and testing will load either a template RDB file or a Customer ...

Страница 28: ...hipment date your Solar Ops Account Manager will contact the PO issuer to confirm delivery date shipping address and receiving representative To change or verify shipping schedule and details please contact your Solar Ops Account Manager Arrival The customer is responsible for receiving and unloading of all equipment deliveries The myPV ClearSky will arrive to your shipping address location pallet...

Страница 29: ...iver directly in contact with the receiving party for receiving coordination All equipment arrives palletized and may be lifted using the pallet for initial unloading The equipment arrives with four 4 SS Strap Clamps DO NOT DISCARD THE SS STRAP CLAMPS The SS Strap Clamps are reused for permanent pad mounting ...

Страница 30: ...two 2 lifting eyes installed on the Front and Back side walls of the device to facilitate use of a spreader bar or chain The myPV ClearSky is built tough but also contains sensitive electronics that should be treated with care Avoid events that include dropping jarring shaking or excessive vibration Any of these activities may cause damage to internal components or the disconnection of internal co...

Страница 31: ...gned to support its weight and size The myPV ClearSky has two electrical termination cabinets that are specific to the Utility Side and Solar Side medium voltage MV conduit locations The myPV ClearSky MUST BE ORIENTED APPROPRIATELY so the at the appropriate electrical termination cabinet is location above the appropriate conduit ...

Страница 32: ...d with nut and washer set 4 sets total not included All four 4 nuts should be tightened in accordance with the Torque Schedule and threaded stud specification NOTE Some EPCs will choose to install a bead of caulk around the perimeter of pad mounted equipment We encourage this as an added barrier to entry to prevent insect entry into the cabinet but caulking is not required ...

Страница 33: ... inside the center switching cabinet The zip ties are installed to ensure the fuses do not come loose during shipping and need to be removed The PTs may be most easily accessed prior to any medium voltage MV conductors being pulled into the MV Termination cabinets All cut zip ties should be collected and discarded ...

Страница 34: ... the Solar side The MV separable connectors will be either 200A load break or 600A dead break IEEE 386 compatible interfaces Whether 200A or 600A all bushing wells and inserts will be shipped with the device your MV contractor only needs to purchase and install the elbows Parking stands are installed for all six 6 connections however parking bushings are not included as these are not required for ...

Страница 35: ...MV cable management scenarios the CTs may be left unmounted so long as the phase orientation and control wiring is not modified Solar Ops applies phase labels to each CT that indicate Up and Top for each CT to help avoid a CT from being flipped in the event it is unmounted during MV cable installation CTs are solid core and require being slipped over the MV conductor The CTs have been specified wi...

Страница 36: ...rom the Utility side to the Solar side thought the central switching cabinet and never cross For this reason the phasing is reversed on the opposite side of the cabinet Take special care to align phases conductor labels and colored phase tape to match the posted phase markers on the myPV ClearSky s dead front NOTE Whether 200A or 600A all bushing wells and inserts will be shipped with the device S...

Страница 37: ...Electrical Terminations 37 Sealed MV Conduit Conduit Entries All conduits should be adequately sealed to prevent the ingress of water moisture and hazardous gases into the MV termination cabinet ...

Страница 38: ...ocal area LAN Facility network via an integrated network switch All internal networkable devices are connected to that central switch and may be accessed via MODBUS TCP IP Web Hosted Interface or Vendor Provided Software By default the myPV ClearSky has a 8 port Fast Ethernet unmanaged switch Using only standard features the included networkable devices will use five 5 of the ports allowing for th...

Страница 39: ...side wall of the Utility Side MV Termination Cabinet labeled NETWORK to allow media routing between termination cabinet and the Control Cabinet The gland is oversized to allow multiple media runs and pre terminated ends Communications media may be managed in parallel to the PT CT wire runs and it is recommended to foam duct seal the wire gland to prevent moisture entry into the Controls cabinet Wi...

Страница 40: ...options for all networkable devices the support third part monitoring SCADA and even IT reporting requirements Communications Options Media Connection Ethernet and or fiber media will need to be terminated and tested by the installer and connected to the network switch inside the Control Cabinet ...

Страница 41: ...e using air gap visible OPEN devices that are OUTSIDE the myPV ClearSky device e g parking MV bushings in the MV Termination Cabinets IS NOT sufficient for proper isolation Improper or lack of LOTO isolation procedures will result in staff being exposed to the full interconnection voltage and could result in injury and or death The following steps should only be conducted by authorized and qualifi...

Страница 42: ...t that the myPV ClearSky be properly grounded to prevent any transient voltages from not having a safe path to ground Due to the myPV ClearSky s location on an equipment pad and grounding ring Solar Ops recommends the maximum ohmic resistance between the device grounding rod and the associated ground will be 2Ω Both the Utility Side and Solar Side grounds should be verified ...

Страница 43: ...r Side all six 6 MV elbows should be be fully seated on the inserts 200A load break connections are pushed on until the are fully seated and no color ring is visible 600A dead break connections e g T bodies are bolted on and need to be fully seated and torqued per manufacturer instructions ...

Страница 44: ...e myPV ClearSky has three 3 independent MV VFI Breakers that provide protection isolation reclosing and can support single phase drop testing as well All three 3 breaker s positions should be visually verified to ensure they are in the OPEN indicate GREEN position ...

Страница 45: ...ontrol wire leads for the CTs to ensure they are seated firmly pull test and that the wire terminations are on the wire conductor not the wire insulation Although CTs and control leads are all factory tested MV installation crews frequently dismount CTs during MV conductor installation to provide adequate room for MV conductor management CT Orientation Wiring Verification Metering protection relay...

Страница 46: ...center switching cabinet four 4 fused PTs may be observed using the two 2 external wire glass windows Visually verify all four 4 PT fuses are intact A fuse that is indicating see example image is not longer intact and will require replacement prior to operation ...

Страница 47: ...ers leave OPEN Yes this is a second set Use a multimeter to verify all threes 3 fuses have continuity Two 2 spare AC fuses are included in the orange envelop mounted on the back of the Control Panel swing door Two 2 spare DC battery fuses are included in the orange envelop mounted on the back of the Control Panel swing door Control Panel Preparation Prior to energization preparation of the Control...

Страница 48: ...Pre Energization Checks 48 Control Panel Verification Locations ...

Страница 49: ...in Repair Service Mode the Protection Relay cannot CLOSE the MV breakers only TRIP commands or TRIP on fault actions will operate Reference the image number callouts for additional verification locations 1 Perform a gentle control wiring pull test of the AC control power terminations 2 Perform a gentle control wiring pull test of the PT CT and VFI Breaker position terminations Mode Selector Switch...

Страница 50: ...ssion staff to CLOSE ENERGIZE individual medium voltage phases from the interconnection Appropriate personal protective equipment PPE electrically rated tools and knowledge of the energization process are required perform the energization process Improper PPE tools and or knowledge will result in staff being exposed to the full interconnection voltage and could result in injury and or death The fo...

Страница 51: ... The written assignment of procedure tasks to specific qualified staff members e A written communication plan that includes who will coordinate the procedures execution and the halt of the procedure in the event of abnormal operation f A review of on site and local emergency response resources including fire extinguishers first aide kits first responders hospitals police fire and EMS myPV ClearSky...

Страница 52: ...r the following steps the myPV ClearSky s Control Panel door will beed to be open d and the dead front swung open to allow for AC power measures Energization Steps 1 Instruct the MV contractor to energize phase C as it is labeled at the interconnection 2 In the Control Cabinet use a Multimeter set to AC RMS to verify the presence of 120V AC voltage 10 108 132V at locations A 602A FU3 and B either ...

Страница 53: ... of the power supply 3 Use a Multimeter set to DC to verify the presence of 24V DC 0 1V 23 9 24 1V voltage on the top output side of the power supply 4 If the DC voltage is not 24V DC Verify the DC OK LED is illuminated Green and Use the potentiometer and a small screwdriver to adjust the output until it is 24V DC 3 If PASS where 120V AC is present In both locations a CLOSE the 3 pole fuse block e...

Страница 54: ...e on the top battery terminals of the UPS 24V DC 0 1V 23 9 24 1V voltage on the top input terminals of the UPS 3 CLOSE the 10A Fuse Holder DC Bus 300 302b 1 Visually verify Green Blue Yellow Red power status indicator lights on the following equipment Hub E8 Network Switch Based on Customer options there may be additional devices RV50 Cellular Modem myPV IQ Edge Computer for myPV IQ Remote Interfa...

Страница 55: ...Initial Energization 55 ...

Страница 56: ...rify phase B voltage by using a Multimeter set to AC RMS to verify the presence of 120V AC voltage 10 108 132V at locations B 601 If 120V is present CLOSE the 10A fuse holder associated with 601NOTE The corresponding L N interconnection voltage for Phase B should also be read on both the SEL 735 Meter and SEL 751 Protection Relay 3 Instruct the MV contractor to energize phase A as it is labeled at...

Страница 57: ... N voltages are not within the expected interconnection ranges verify the PTR and CTR settings in the SEL 735 Meter and SEL 751 Protection Relay Frequency Phase Rotation For information regarding operation of the SEL 735 or SEL 751 for the purposes of the verifications above please reference to the SEL Instruction Manuals ay https www selinc com or give us a call Please continue to the next sectio...

Страница 58: ...ternal MV VFI breakers to the Solar side and to any electrically equipment that is in a CLOSED circuit condition Improper PPE tools and or knowledge will result in staff being exposedto the full interconnection voltage and could result in injury and or death The following steps should only be conducted by authorized and qualified commission staff Initial Breaker Position During the myPV ClearSky s...

Страница 59: ...ase Operation While still in REPAIR SERVICE MODE the MV VFI Breakers may be cycled OPEN and CLOSE independent of any protection logic or recloser settings NOTE Protection Logic can still cause a TRIP event e g If the MV Breakers are manually CLOSED and there is no grid voltage the Protection Relay may still TRIP the MV Breakers on an under voltage condition The following steps demonstrate manual o...

Страница 60: ...ndividual A PHASE B PHASE and C PHASE Red indicators should now also be illuminated Numbered Illustration of Protective Relay Indicators Testing 1 Phase Operation In support of IEEE 1547 loss of phase testing requirement the myPV ClearSky has been designed to support pushbutton single phase testing capabilities Single phase testing is a special mode that must be enabled by the Commissioning staff ...

Страница 61: ... PHASE button to TRIP the MV VFI Breaker for phase A the breaker should TRIP OPEN 4 The A PHASE button s TRIPPED Green indicator should now be illuminated 5 The CLOSE button s BREAKER CLOSED Red indicator will remain illuminated so long as any one MV VFI Breaker is still in the CLOSED position Numbered Illustration of Protective Relay Indicators Additional notes on single phase mode operation ...

Страница 62: ... compliance At any time a single phase is OPEN rotating the Selector Mode Switch to AUTOMATIC will enable protection logic and force a 3 phase TRIP condition Commercial Operation Following testing take the following steps once you are ready to place the myPV ClearSky into normal commercial operation Commercial Operation Settings 1 Rotate the Mode Selector Switch to AUTOMATIC if any phase was OPEN ...

Страница 63: ...Operational Testing 63 The myPV ClearSky may be left in this condition indefinitely ...

Страница 64: ...Operational Testing 64 Numbered Illustration of Mode Selection Switch Protective Relay Indicators ...

Страница 65: ...tion Frequency Inspection Description Every Yrs Outage Metal Corrosion Inspect the external and internal metal surfaces for signs of corrosion If corrosion is found brush clean affected areas to remove oxidation and debris prime and paint with an outdoor rated paint specifically for metal steal surfaces 1 UPS Battery Verify the UPS battery indicator lights are not red If any of the UPS indicator l...

Страница 66: ...ces replaced by a qualified party If poor un grounded grounds should be repaired and tested If unsealed conduits should be re sealed 2 Solar MV Terminations Following isolation and LOTO the Solar side MV Termination cabinet should be opened to 1 Inspect that it is free of debris water animals or other contamination 2 MV elbows are firmly seated 3 MV conductors are free of defects 4 All grounds and...

Страница 67: ... spare parts Spare Parts The myPV ClearSky is designed with high quality industrial grade components that are intended to provide reliable operation throughout the commercial operating lifespan of your facility Having a complement of spare parts on hand however can prevent unnecessary prolonged downtimes Recommended Spare Parts List ...

Страница 68: ...Spare Parts 68 ...

Страница 69: ...Spare Parts 69 ...

Страница 70: ...crew terminal tightening torques Torque Values COURSE THREAD TORQUE FINE THREAD TORQUE 1 1 4 20 49 0 in lb5 5 N m 1 4 20 55 0 in lb6 2 N m 5 16 18 101 0 in lb11 4 N m 5 16 18 112 0 in lb12 7 N m 3 8 16 180 0 in lb20 3 N m 3 8 16 204 0 in lb23 0 N m 7 16 14 24 0 Ft lb32 5 N m 7 16 14 27 0 Ft lb36 6 N m 1 2 13 36 5 Ft lb49 5 N m 1 2 13 41 0 Ft lb55 6 N m 9 16 12 53 0 Ft lb71 9 N m 9 16 12 59 0 Ft lb...

Страница 71: ...st commonly due to a CT wire lead being terminated improperly in the Utility MV Termination Cabinet MV installation crews typically disconnect the wire leads while installing the CTs over the MV conductors When reconnecting the wire leads the electrical connections may be landed on the wire insulation instead of the conductor opening the CT s current path See image of CT wire lead insulation defor...

Страница 72: ...TRIP event press the TARGET RESET until the Red TRIP indicator is no longer illuminated TRIP Indicator NOT Illuminated MV Breaker TRIP on CLOSE If the MV Breaker immediately TRIPs following a CLOSE the Protection Relay is commanding it to TRIP due to a protection element or logic driven fault detection Consult the Protection Relays event files to determine the cause of the TRIP command MV Breaker ...

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