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Fimer MVCS, Hardware Manual

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Contents of this chapter

This chapter contains the preventive maintenance instructions for the medium voltage compact skid (MVCS). The 
instructions are intended for certified personnel to perform maintenance tasks. Depowering of the units must be 
carried out by a certified electrician as per applicable local regulation. Maintenance of de powered unit can be 
carried out by a certified maintenance technician by Fimer

WARNING!

Only an authorized electrician is permitted to do maintenance work on the MVCS. Obey the Safety instructions and 

follow the local safety regulations. If ignored, physical injury or death, or damage to the equipment may occur.

WARNING!

Do not do any electrical installation work during a thunderstorm.

Tools needed

•  Torx drivers
•  Philips screwdrivers (PoziDriv)
•  Torque wrench
•  Set of wrenches and sockets
•  Cable and wire strippers
•  Crimping tool and cable lugs
•  Voltage detector
•  Personal protective equipment

Tightening torque

Use the torque values given in the table, unless otherwise specified.

9

Maintenance

9 - Maintenance

Summary of Contents for MVCS

Page 1: ...Medium Voltage Compact Skid FIMER solar Hardware manual ...

Page 2: ......

Page 3: ... 10 11 Table of contents Safety instructions Introduction to this manual Hardware description Storing lifting and transporting Mechanical installation Electrical installation Finalizing the installation Start up and operation Maintenance Technical data Documents ...

Page 4: ...es board Safe operation Introduction to this manual Related documents Terms and Abbreviations Hardware description Product overview Mechanical characteristics Layout drawing Working areas and main components Main Components Overview MV Switchgear MV Transformer AC Cabinet Inverter inputs A Auxiliary service board B List of signals Main circuit diagram Type designation label MVCS Configuration MVCS...

Page 5: ... the installation Finalizing the installation Checking the installation of MVCS Commissioning Pre Conditions Pre Commissioning Checklist Start up and operation Start up procedure Maintenance Maintenance intervals Annual maintenance Maintenance intervals Cleaning procedure Maintenance of painted surfaces Repainting the scratched areas Painting the damaged surface no visible rust Painting the damage...

Page 6: ...ed before commissioning The operation and maintenance of the MVCS must be carried out by certified technicians that fulfill all local skill set and safety requirements Any unqualified personnel must maintain a safe distance from the MVCS All activi ties must be in accordance with the criteria described in the FIMER technical documents and local regulations Make modifications to the MVCS only with ...

Page 7: ...net Area MV Transformer Area MV Switchgear Area Each working area has separate safety instructions Personal Protective Equipment PPE Perform any operation on the equipment with suitable work clothes and instruments When choosing a personnel protective equipment consider environmental conditions such as humidity noise etc and local regulations The minimum required safety equipment is as follows Saf...

Page 8: ... Check that all shrouds screens are in place 6 Check that you are not near to any live parts while working All live circuits must be protected with shrouds screens 7 Make sure that the MV switchgear is dead Check the status of voltage indicators in all MV switchgear bays Also note that all phase LEDs which were switched on AC cabinet before step 3 are now switched off 8 Check that the MV transform...

Page 9: ...e MVCS closed during operation Give the keys only to authorized personnel 2 Before you start a group of inverters check the connections of each inverter input and the recommendations in the specific inverter manual 3 Do not open the AC base fuse switches when the MVCS is operating 4 Before you adjust the group of inverters and set them into service make sure that all of them are suitable for opera...

Page 10: ...ion Guide EN REVA CC pdf PVS 175 TL data sheet FIMER_PVS 175 TL_EN_RevB pdf PVS 100 120 TL Product Manual FIMER PVS 100_120 TL B version Product manual EN Rev A PVS 100 120 TL Quick installation guide PVS 100_120 TL Quick Installation Guide EN RevB PVS 100 120 TL data sheet FIMER_PVS 100 120 TL 6MPPT 2MPPT_EN_RevA Term Abbreviation Description AC Alternating current CV CCV Construction of MV switc...

Page 11: ...and the auxiliary service boards required for the autonomous func tion of the MVCS Note that the AC cabinet also includes an additional space for customer use e g communication board etc Mechanical characteristics The MVCS is constructed over a skid with the appropriate dimensions to be suitable to transport inside 20 ft or 40 ft HC container External dimension length width height 5700 x 2150 x 25...

Page 12: ...w A 1 SF6 Outlet 2 MV Input from transformer V module 3 MV Output C module B 4 LV Connection Box 5 MV Bushings 6 Transformer Protection Device C 7 Neutral Bushing 8 Busduct Busbars 9 Auxiliary Section input 10 String Inverter cables access 3 Hardware desription ...

Page 13: ...rating Voltage Up to 36 kV Rated Current 630 A 40ºC 500 A 60ºC Rated Short Circuit Current 20 kA 1s Internal Arc Fault withstand Standard 24kV 36kV 16 kA 1s 20kA 1s Upgrade 24kV 36kV 20 kA 1s 25kA 1s Configuration Standard 1 Line Switches 1 Trafo Feeders Upgrade 2 Line Switches 1 Trafo Feeders Electrical and mechanical class M1 MV Unit Composition Line Switch 630A C module equipped as follow Nr 3 ...

Page 14: ...ed when indoor switchgear is installed Technical Datasheet Minimum Ambient Temperature 25 C Maximum Ambient Temperature 60 C Classification AFLR Degree of Protection IEC60529 IP54 Degree of Protection IEC62262 IK9 10 Corrosion class Standard C4 Upgrade C5M Paint colour RAL7035 Cooling Natural SF6 Ventilation Upper exhaust Dimensions WxLxH 1676 x 1300 x 2238 mm 3 Hardware desription ...

Page 15: ...kV Voltage regulation range 2x2 5 Vectorial group Dyn11 Primary insulation class 24 50 125 kV 36 70 170 kV Secondary insulation class ph 3 6 10 40 Secondary insulation class N 1 1 10 20 Losses Standard EU 548 2014 Optional EU 2019 17831 Short Circuit Impedance 5 8 Frequency 50 60 Hz Max Dimensions LxWxH 2650x1700x2200 Corrosion class Standard C4 Upgrade C5M Painting RAL 7035 Load Power derating Ac...

Page 16: ...V Frequency 50 60 Hz Conductor Copper Busbars Surge Arrester Protection Type I II Aux Trafo Power Standard 10 kVA Upgrade 20 30 kVA Secondary Voltage 400 230 V Spare Lines 2x16 10 A 1 ph Communication MVCS signal concentration 2x Remote I O module Digital signals Input 8 channel 2 conductor connection 1x Remote I O fieldbus coupler Modbus TCP 1x Network switch unmanaged Fast Ethernet Number of por...

Page 17: ...2 Surge arrester protection 3 Grounding Busbar 4 Fuse holders fuses for inputs protection 5 PVC protection cover 6 Ventilation system This layout may vary depending on final MVCS configuration Inverter inputs A 3 Hardware desription ...

Page 18: ... service board circuit breakers and differential protections 6 Grounding busbar 7 Terminals block 8 Voltage presence indication LEDs 9 Communication board if present 10 Cover for incoming cables 11 Main Circuit Breaker if present 12 Ventilation system This layout may vary depending on final MVCS configuration Auxiliary service board B The figure below shows the disposition of the main components o...

Page 19: ...Status DI Earth Switch Status Gas Pressure Level A02 MV Cabinet type C Disconnector Status Earth Switch Status A03 MV Cabinet type V Disconnector open indication Earth Switch open indication Circuit Breaker Status Oil Transformer DGPT2 RIS2 Temperature stop T2 Temperature stop T1 Internal Pressure alarm Gas Auxiliary Services Cabinet Aux Transformer secondary breaker status Ventilation Status A02 ...

Page 20: ...n of the inputs above then a standard MVCS will be configured Skid C4 SWG 24kV 16kA CV 50 51 50N 51N 68 Relay MV Transformer 15 0 8 Dyn11 3 700 kVA 30ºC Losses acording EU 548 2014 Regulation AC Cabinet 20 inputs 10kVA Auxtrafo 0 8 0 4 0 23 kV If additional features are needed then the appropriate optional codes from the following section must be selected 1 Product description MVCS string inverter...

Page 21: ...2 25kVA 14 min 1 5kVA 29 5 min 0 75 kVA LVEM LV Energy Meter Addition of LV energy meter current transformers and voltage transformers included MV Switchgear SWGCCV SWG CCV module Standard 24k 36V CV switchgear is replaced with CCV switchgear M2420 SWG Short Circuit Standard 24kV 16kA is replaced with 24kV 20 kA Only for SWG 24 kV M3625 SWG Short Circuit Standard 36kV 20kA is replaced with 36kV 25...

Page 22: ...the internal heaters to maintain the inside temperature of the unit more than the outside temperature If power supply is not available add humidity desiccant bags inside the station If the MVCS is stored for more than two weeks without using electric heaters use desiccant bags See also Conditions for using desiccant bags Make sure the ground underneath the MVCS is solid flat dry and vegetation fre...

Page 23: ...he minimum length of each sling is three meters Adjust the length of lifting slings so that the MVCS does not tilt during lifting Do not allow the lifting slings to scratch the walls or roof Damaged paint can lead to corrosion Use a guide wire attached to a lower corner of the MVCS to prevent rotation If there is a fence installed remove it before lifting the MVCS Tools used for lifting 20 tons br...

Page 24: ...ght of the transportation is not more than the maximum allowed height WARNING Transport the MVCS on an open heavy duty chassis Do not use an enclosed trailer because the stations surface could easily be damaged WARNING Do not throw the hooks over the roof This can damage the paint and cause corrosion or operation problems 4 Storing lifting and transporting ...

Page 25: ...hat the MVCS corresponds to the delivery list and order Record the deviations if any and immediately inform your local FIMER representative or FIMER sales contact Unloading WARNING To prevent damage to the MVCS keep the delivery packaging and protection canvas on until you install it WARNING Inspect the MVCS carefully before performing any activity Check that there is no protuberance or any genera...

Page 26: ...ening points in the skid profile 4 Connect the slings to the belly chains and to the forklift 5 Slowly and carefully pull the MVCS out of the container using the forklift The forklift must be perfectly aligned to the MVCS so that the station does not touch the container walls Note Pull the MVCS until connection with spreader and crane is possible Then follow the lifting procedure to place the MVCS...

Page 27: ...n This ensures that surface water flows away from the MVCS Consider local conditions such as soil type frost protection rain amounts etc There needs to be at least 300 200 mm gravel under the foundation Consider the required cable bending radius and installation room The built on site user platform around the MVCS must be at least one meter 40 in wide If it is narrower service work can be difficul...

Page 28: ...e holes on the base of the inverter or use the supplied attachment brackets see figure below Use bolts and washers in each connection point For these anchoring points FIMER recommends FH II 24 50 Nylon S high performance anchoring Fastening points Fastening points Fixing plate detail Follow the local regulations and applicable standard to calculate the mechanical connections and structural propert...

Page 29: ...20 cm 8 in below and about 100 cm 40 in around the foundation 3 The MVCS is a not walking station it is designed to be operated from the outside Provide a permanent or portable platform for comfort able operation of the MVCS switching devices as the foundation can be higher than the surrounding ground For platform design and construction follow the local rules and standards 4 Do not plant trees ne...

Page 30: ...rnal cable entries are fully sealed to prevent entry of foreign elements such as animals insects and dust Routing the cables When you route the cables Install the AC power cables and the control cables on separate routes Use metallic screen cables for control cables Do not put extra cables through the MVCS without permission For more information see drawing MVCS Inter connection cables and electri...

Page 31: ... Earth the shields armors and protective conductors of all incoming cables to the appropriate earthing terminals of the station Measuring the insulation resistance of the cabling Make sure that the insulation resistance of the external power cables is measured according to manufacturer recommendations and local regulations Connecting the inverter inputs To connect inverter cables to MVCS inputs fu...

Page 32: ...se terminals in the AC cabinet make sure that the proper electrical sequence is maintained Tighten the connections 8 Connect the grounding cables coming from the inverters to the grounding busbar below fuse holders Note AC cables can be connected to the fuse holders without terminals 6 Electrical installation ...

Page 33: ...Interconnection See the following documentation General MVCS Single Line diagram LV MV AC xxxxxxx_011_DW_name MVCS interconnection cables and electrical Layout xxxxxxx_021_DW_name MVCS Footprint xxxxxxx_302_DW_name Switchgear xxxxxxx_131_SP_name To connect MV cables 1 Remove the cable entry covers 2 Lead the cables into the MVCS and seal the cable entries 3 Terminate the cables according to the ca...

Page 34: ...faces If not yet done seal the cable entries cover the cable entries with sand and sprinkle a handful of cement over the sand The cement hardens in a few days and it forms a barrier against small animals and plant growth Checking the installation of MVCS As part of the pre commissioning inspection of a MVCS it is needed to check the following points listed on Commis sioning Pre Conditions Pre Comm...

Page 35: ...on Refer to Finalizing the installation Make sure that the parameters of the MV HV grid on which the PV plant is going to be connected match with the MV parameters of the MVCS MV level Isc Make sure that there is permission from grid operator to connect the PV plant Activity Status Comments General Building Check the external conditions of the buildings no scratches bumps etc Check that there are ...

Page 36: ...gear with clamps Check the insulation resistance of the MV cables coming from the ring Check the correct point to point connection for the MV cables coming from the ring Check that the electrical sequence is correct for the MV cables coming from the MV ring Verify the correct function of the interlocking system Check that the settings of the protection relay are suitable for MVCS and grid characte...

Page 37: ...re properly fixed and in general good conditions Check that all the cables of the auxiliary board are firmly connected to their terminals Check the correct connection to the grounding grid Verify that the value set in the thermostat of the Auxiliary Services Compartment are in accor dance with the specifications Standard Value 35ºC Check that all fuse holders inverter string and LV device protecti...

Page 38: ...information see section Measuring the insulation resistance of the cabling Personal protective equipment Start up procedure This section describes the procedure to startup the medium voltage compact skid MVCS WARNING Only an authorized electrician is permitted to install and perform the start up procedure Obey the Safety instructions and the local safety regulations If ignored physical injury or d...

Page 39: ...on the MV Transformer side of the MV switchgear to the not earthed position Applicable for V P module MV switchgear See MV switchgear documentation Switchgear Turn the disconnecting switch on the MV transformer side of the MV switchgear to the closed position Close the main breaker of the MV transformer Make sure that the voltage level on the low voltage side of the MV transformer is correct PVS 1...

Page 40: ...r WARNING Only an authorized electrician is permitted to do maintenance work on the MVCS Obey the Safety instructions and follow the local safety regulations If ignored physical injury or death or damage to the equipment may occur WARNING Do not do any electrical installation work during a thunderstorm Tools needed Torx drivers Philips screwdrivers PoziDriv Torque wrench Set of wrenches and socket...

Page 41: ...5 110 M75x3 115 M90x4 115 Mechanical connections Thread Plug mm Torque N m 10 Stainless steel A2 A4 Stainless steel A2 A4 Stainless steel A2 A4 1 Between steel parts 1 Cover tank bolts 2 Drain valve 1 DGPT2 RIS2 DMCR 2 Thermometer pocket 3 HV insulator blocks 4 Pressure valve With gasket With gasket Cork NBR NBR M3 0 6x3 5 M6 10 6 12 6 M8 13 15 27 13 8 M10 17 35 65 27 15 M12 19 50 100 46 40 M14 22...

Page 42: ... MVCS I Check and clean the inlet and outlet grills filters I Check the sealing of all cable entries to ensure that the IP protection level is maintained I Clean the filters of the air inlet and outlet I Examine the tightness and cleanliness of the main circuit terminals and earth connections I Inspect the general conditions of the MVCS door sealing cooling fan operation etc I Inspect the operatio...

Page 43: ...Use a pressurized air to clean the general dust in the MV transformer surface and locations with excessive dust See MV transformer manual Cleaning the air filters Clean the air filters by blowing compressed air from the inside to the outside through the filter until the dust comes off Loosen and remove the screws on the filter frame Clean the grill interior with a vacuum cleaner Task Additional in...

Page 44: ...t 1 Remove the rust with sandpaper polishing disk 2 Clean the damaged area and its surroundings using a cloth or blower 3 If necessary apply putty to even out the surface 4 Coat the damaged area with an epoxy primer Let it dry thoroughly for at least 24 hours 5 Apply first layer of paint to the damaged area Let it dry thoroughly for at least 12 hours 6 Apply second layer of paint to the damaged ar...

Page 45: ...g cables in the MV switchgear area If there is any visible corrosion remove the cables and remove the corrosion with steel wool Apply joint compound between the grounding bar and the joint surfaces of the cable terminal 2 Change the spring lock washers Tighten the cables to the nominal torque values 3 If corrosion is more apply protective wax spray on the grounding bar and the cable terminals 9 Ma...

Page 46: ...S 120 2 640 2 880 3 120 3 360 3 600 3 840 Maximum rating in kVA with PVS 175 4 070 4 440 4 810 5 180 5 550 5 920 6 290 6 660 General Length Width Height L W H 5 700 x 2 150 x 2 590 mm Weight approx 7 18 ton Operating tem perature range Depending on power rating Operating altitude range 25 C 60 C with derating above 30 C Relative humidity 1 000 m Environmental protection 95 Environmental protection...

Page 47: ... 200 315 A Depending on inverter selection Over voltage protection SPD Type I II Auxiliary service board Auxiliary transformer power 10 kVA 20 kVA 30 kVA optional Auxiliary transformer voltage 800 400 230 V3 Comm 2x Remote I O module Digital signals Input 8 channel 2 conductor connection 1x Remote I O fieldbus coupler Modbus TCP 1x Network switch unmanaged Fast Ethernet Number of ports LV Main Cir...

Page 48: ...ion Type xxxxxxx _001_TZ_yyyy Documents list Product Series xxxxxxx_002_BQ_yyyy Equipment list Product Series xxxxxxx_011_DW_yyyy General MVCS Single Line diagram LV MV AC Project Specific xxxxxxx_021_DW_yyyy MVCS interconnection cables and electrical layout Project Specific xxxxxxx_022_DW_yyyy MVCS grounding layout Project Specific xxxxxxx_101_FT_yyyy MVCS FAT Report Product Series xxxxxxx_102_LB...

Page 49: ...49 ...

Page 50: ...50 FIMER Spa Via John Fitzgerald Kennedy 26 20871 Vimercate MB Italy www fimer com FIMER_MVCS Hardware Manual__EN_Rev_A 14 06 2021 ...

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