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10 Maintenance

Replacing type 2 AC surge protection devices

Installation and Operation Manual M125HV EU V3 EN 2021-07-12

128

10.8 Replacing type 2 AC surge protection

devices

DANGER

Electric shock

Potentially fatal voltages are present in the
inverter during operation. When the inverter
is disconnected from all power sources, this
voltage remains in the inverter for up to 135
seconds.

►

Perform the instructions listed in “10.4
Making preparations for maintenance work
- disconnecting the inverter from the grid
(AC) and solar modules (DC)”, page 104

before

you start work on the inverter!

1. Unscrew and remove the cover of the AC surge protection

devices.

2. Unscrew and pull out the power supply cable of the AC

surge protection devices.

Summary of Contents for M125HV 110

Page 1: ...Solar inverters M125HV_110 M125HV_111 Delta part numbers RPI124M110000 RPI124M111000 Installation and Operation Manual Europe Installation and Operation Manual M125HV EU V3 EN 2021 07 12...

Page 2: ...Installation Guide or the comprehensive Installation and Operation Manual is available Copyright Delta Electronics Netherlands B V All rights reserved This manual is intended for installers The infor...

Page 3: ...setup for type 1 DC surge protection devices 20 4 6 Communication connection 21 4 7 Grounding connections 22 4 7 1 Grounding screws 22 4 7 2 PE screw 22 4 8 Cooling system 23 4 8 1 Air inlets air out...

Page 4: ...3 Installing 15 A DC string fuses optional 52 6 4 Mounting the inverter 53 6 4 1 Ground mounting upright 53 6 4 2 Wall mounting 54 6 5 Grounding the inverter housing 56 6 5 1 Ground via the outer gro...

Page 5: ...99 10 Maintenance 102 10 1 Safety Instructions 102 10 2 Periodic maintenance 103 10 3 Overview of components that may be replaced 103 10 4 Making preparations for maintenance work disconnecting the i...

Page 6: ...stallers who are trained and approved for the installation commissioning and operation of solar inverters in grid connected solar systems 1 3 Warning notices and warning symbols This manual uses the f...

Page 7: ...ork instructions must always be performed in the specified sequence 1 First step Where necessary the result of the work step is de scribed here This is used for checking that the work step has been co...

Page 8: ...and operated in accordance with the safety and op erating instructions set out in this manual Delta Electronics is not responsible for damage resulting from failure to follow the safety and operating...

Page 9: ...public grid For conversion of the DC power that is generat ed by the solar modules of the solar system into AC power which is fed into the local power grid Use in conformity with the power specificati...

Page 10: ...nd mounting 4 For fixing the feet when floor mounting Screw set 1 For fixing the mounting brackets to the feet of the inverter 8 M10 screws with spring washer washer Mounting tool for DC plug 2 For un...

Page 11: ...United Kingdom European Union Allen wrench 2 To unscrew the door screws and to secure the open doors from slam ming shut Installation material for AC surge protection devices type 1 Signal cable 1 Pow...

Page 12: ...l for the use of type 1 surge protection devices is supplied with the inverter The type 1 surge protection devices themselves arenot included in the scope of delivery Check the delivery for completene...

Page 13: ...3 1 1 2 4 5 10 11 12 Fig 4 1 Overview of components and connections 1 Air outlets 7 Status LEDs 2 Mounting plate for wall mounting 8 Communication connection 3 Type plate 9 Grounding connection 4 DC i...

Page 14: ...nside the inverter 13 Integrated AC surge protection devices type 2 17 DC string fuses minus top and plus bottom 14 Internal fan 2 18 Preliminary setup for DC surge protection devices type 1 15 Integr...

Page 15: ...yel low LED flashes green LED lights up green LED flashes red LED lights up red Table 4 2 Meaning of the LED symbols used in this manual Grid Alarm Explanation Countdown inverter is starting up The in...

Page 16: ...al AC cable feed through with four AC cable glands Fig 4 4 Optional AC cable feed through with four AC cable glands The optional AC cable feed through consists of a removable cover and 4 cable glands...

Page 17: ...ated current In 10 kA 8 20 s Maximum current Imax 20 kA 8 20 s Voltage UP 895 VAC Table 4 4 Specification of the pre installed type 2 AC surge pro tection devices Related topics 10 8 Replacing type 2...

Page 18: ...ale for DC UTXCFA4A for 4 6 mm2 Amphenol UTX Male for DC UTXCMA4 for 4 6 mm2 20 pairs of DC plugs are supplied in the scope of delivery Related topics 5 5 Planning the connection of the solar modules...

Page 19: ...e requirements of UTE 15 712 1 VDE 0100 712 4 5 3 DC string fuses Fig 4 14 Covers of the DC string fuses Fig 4 15 View of the DC string fuses with covers removed The assignment of the DC string fuses...

Page 20: ...0 kA 8 20 s Current Imax 20 kA 8 20 s Voltage UP 1 175 V Table 4 6 Specification of the pre installed type 2 DC surge pro tection devices Related topics 10 9 Replace type 2 DC surge protection devices...

Page 21: ...l block 5 Protection against electromagnetic interference EMI Connection Connection type 2x RS485 DATA and DATA Terminal block 1x VCC 12 V 0 5 A Terminal block 6x digital inputs Terminal block 2x dry...

Page 22: ...g screws to protect persons Nuts spring washers washers and toothed lock washers are already mounted on the inverter Available grounding screws 1 x M10 2 x M6 Related topics 5 4 Planning the grid conn...

Page 23: ...nment through the air outlets on the left side of the inverter Related topics 10 5 Clean replace air inlets air outlets and fan modules page 109 4 8 2 Internal fans The position of the two internal fa...

Page 24: ...Operation Manual M125HV EU V3 EN 2021 07 12 24 Internal fan 2 Fig 4 28 Position of internal fan 2 Fig 4 29 View of internal fan 2 with cover removed Related topics 10 6 Clean replace internal fan 1 p...

Page 25: ...disconnection from the power sup ply Before working on the inverter read the supplied manual and follow the instructions provided This inverter is not separated from the grid by a transformer The inv...

Page 26: ...nverter is suitable for wall and ground mounting When installing the inverter always allow sufficient space below so that the AC cable can be easily inserted into the inverter The inverter is very hea...

Page 27: ...e inverter should be pro tected by a roof against direct sun UV radiation rain and snow For example the power of the inverter will be reduced if it is too heavily heated by solar radiation This is nor...

Page 28: ...AC power fed into the grid When the Total operating temperature range is exceeded the inverter stops feeding AC power into the grid This is normal operating behavior for the inverter and is necessary...

Page 29: ...cteristic curves 5 2 Characteristic curves 60 30 20 70 40 80 50 90 100 110 0 30 10 20 40 50 60 P Pn Pn 125 kW UAC 600 VAC 1250 VDC 1050 VDC 860 VDC cos phi 0 90 Ambient temperature C Fig 5 4 Character...

Page 30: ...M125HV EU V3 EN 2021 07 12 30 60 30 20 70 40 80 50 90 100 110 0 30 10 20 40 50 60 P Pn Pn 125 kW UAC 600 VAC 1250 VDC 1050 VDC 860 VDC cos phi 1 00 Ambient temperature C Fig 5 5 Characteristic curve A...

Page 31: ...ation Characteristic curves 60 30 20 70 40 80 50 90 100 110 0 30 10 20 40 50 60 S Sn Sn 125 kVA UAC 600 VAC 1250 VDC 1050 VDC 860 VDC cos phi 0 90 Ambient temperature C Fig 5 6 Characteristic curve Ap...

Page 32: ...EU V3 EN 2021 07 12 32 60 30 20 70 40 80 50 90 100 110 0 30 10 20 40 50 60 S Sn Sn 125 kVA UAC 600 VAC 1350 VDC 1250 VDC 1050 VDC 860 VDC cos phi 1 00 Ambient temperature C Fig 5 7 Characteristic cur...

Page 33: ...n Characteristic curves 60 30 0 20 10 70 40 80 50 90 100 110 850 1250 1050 950 1150 1350 1450 P Pn Pn 125 kW UAC 600 VAC 1500 50 C 40 C 25 C 0 C cos phi 0 90 DC Input voltage VDC Fig 5 8 Characteristi...

Page 34: ...EU V3 EN 2021 07 12 34 60 30 0 20 10 70 40 80 50 90 100 110 850 1250 1050 950 1150 1350 1450 P Pn Pn 125 kW UAC 600 VAC 1500 50 C 40 C 25 C 0 C cos phi 1 00 DC Input voltage VDC Fig 5 9 Characteristi...

Page 35: ...3 EN 2021 07 12 5 Planning the installation Characteristic curves 96 97 98 99 100 0 20 40 60 80 100 UAC 600 VAC 1350 VDC 1250 VDC 1050 VDC 860 VDC AC Output power P Pn Pn 125 kW Efficiency Fig 5 10 Ef...

Page 36: ...EN 2021 07 12 36 5 3 Dimensions 663 538 6 19 2 102 306 510 612 980 950 1 0 5 1 1 940 52 75 2 344 226 5 266 5 306 5 40 980 950 1 0 5 40 92 Front view with mounting brackets for wall mounting Top view...

Page 37: ...assessed by Delta in accordance with the current installation standards The assessments showed that no hazards arise from operating the inverter in combination with an upstream type A residual current...

Page 38: ...the inverter to the grid and solar modules The grounding cable cross section must be at least 6 mm2 If the grounding system contains a PE PEN conductor TN C TN S TN C S and it is included in the AC p...

Page 39: ...ductor to mm Table 5 3 Technical specification of the optional AC cable feed through with four AC cable glands 5 4 8 2 Technical properties of the AC terminal block Connection type Screws with hexagon...

Page 40: ...aluminum must be taken into consider ation when using aluminum Aluminum flows i e it gives way under pressure A thin non conductive oxide layer forms within a few min utes on de insulation which incre...

Page 41: ...o avoid breakage of the conductors or the insulation When installing the inverter always allow suffi cient space below so that the AC cable can be easily inserted into the inverter Fasten the AC cable...

Page 42: ...le material Temperature conditions Cable length Installation type Voltage drop Loss of power in the cable Always follow the installation regulations for AC cables applicable in your country and your r...

Page 43: ...ctly dimensioned solar system If the solar system is dimensioned incorrectly this may damage the inverter Always take the technical specifications of the inverter input voltage range maximum current a...

Page 44: ...for DC cables DC DC a b Amphenol mm2 mm 4 6 5 3 7 65 UTXCFA4A 4 6 5 3 7 65 UTXCMA4A 1 Included in scope of delivery 5 6 Grid and system protection 1 The German standard VDE AR N 4105 requires external...

Page 45: ...2 m m The inverter has 1 cable gland for the communications cable with 2x2 cable feed throughs 5 7 Device communication and system monitoring Related topics 6 6 Connecting the communication card page...

Page 46: ...D must be set at each inverter Other wise the data logger cannot identify the individual inverters Set the same RS485 baud rate at all inverters standard 19200 Lay the cable with a suitable clearance...

Page 47: ...lim ited to 0 4 K2 V1 K2 Maximum active power lim ited to 30 5 K3 V1 K3 Maximum active power lim ited to 60 6 K4 V1 K4 Maximum active power lim ited to 100 7 K5 V1 K5 Reserved 8 K6 V1 K6 Reserved 5 7...

Page 48: ...type 1 AC surge protection devices them selves arenot included in the scope of delivery The type 1 AC surge protection devices are designed for mount ing on a DIN rail always included in delivery max...

Page 49: ...ction are included in the scope of delivery The type 1 DC surge protection devices them selves arenot included in the scope of delivery The type 1 DC surge protection devices are designed for mount in...

Page 50: ...to generate electricity This also happens when light does not fall directly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn both DC isolating swit...

Page 51: ...ion devices 9 4 Install type 1 DC surge protection devices page 98 Installing 15 A DC string fuses optional This step is only necessary if you want to use 15 A DC string fuses instead of the pre insta...

Page 52: ...6 Installation Installing 15 A DC string fuses optional Installation and Operation Manual M125HV EU V3 EN 2021 07 12 52 6 3 Installing 15 A DC string fuses option al Content is not yet defined...

Page 53: ...ing the inverter 6 4 1 Ground mounting upright 1 Screw the 4 mounting brackets for ground mounting to the feet of the inverter with 2 M10 screws torque 15 Nm a spring washer and a washer each The scre...

Page 54: ...tions from this are only possible in exceptional cases approved by Delta Electronics Always check with Delta Customer Service first if you want to deviate from the work instructions given in this sect...

Page 55: ...stallation Mounting the inverter 3 Mount the inverter on the mounting plate using a lifting device 4 Check that the inverter is correctly mounted on the mount ing plate 5 Attach the mounting plate on...

Page 56: ...Always ground the inverter housing before connecting the inverter to the grid and solar modules The grounding cable cross section must be at least 6 mm2 The inverter housing can be grounded at 2 poin...

Page 57: ...gs according to the following tables PE terminal material nickel plated Cables Cable lug Copper Copper tin coated Pure copper Aluminum Aluminum tin coated Aluminum copper compression joint Table 6 1 P...

Page 58: ...6 Installation Grounding the inverter housing Installation and Operation Manual M125HV EU V3 EN 2021 07 12 58 2 Perform a continuity check of the grounding connection...

Page 59: ...r off EPO 4 RS485 and VCC 5 Protection against electromagnetic interference EMI Connection Connection type 2x RS485 DATA and DATA Terminal block 1x VCC 12 V 0 5 A Terminal block 6x digital inputs Term...

Page 60: ...n and Operation Manual M125HV EU V3 EN 2021 07 12 60 6 6 3 Initial steps 1 Unscrew the cable gland of the communication connection and remove the cable gland and seal 2 Unscrew and carefully pull out...

Page 61: ...tallation Connecting the communication card 3 Remove the same number of rubber plugs from the seal corresponding to the number of cables to be connected Do not remove the rubber plugs from the unused...

Page 62: ...C 12 V 0 5 A 2 GND 3 DATA RS485 4 DATA RS485 5 DATA RS485 6 DATA RS485 Fig 6 21 Terminal assignment of the RS485 terminal block Terminal pairs 3 4 or 5 6 can be used The second terminal pair is only r...

Page 63: ...t have an integrated RS485 termination resistor switch the DIP switch for the RS485 termination resistor on the last inverter to ON Set a different inverter ID at each inverter during commis sioning o...

Page 64: ...nstallation and Operation Manual M125HV EU V3 EN 2021 07 12 64 6 6 4 2 Wiring for a single inverter 1 Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 2 Set the DIP switch for the R...

Page 65: ...ultiple inverters Data logger 1 On the cable coming from the data logger Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 On the cable going to the second inverter Connect the DATA...

Page 66: ...a logger 3 On the cable coming from the previous inverter Con nect the DATA wire to terminal 5 and the DATA wire to terminal 6 On the cable going to the next inverter Connect the DATA wire to terminal...

Page 67: ...125HV EU V3 EN 2021 07 12 6 Installation Connecting the communication card Data logger 5 Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 6 Set the DIP switch for the RS485 terminat...

Page 68: ...VDC power supply The external alarm unit must be connected to an external power supply if the internal 12 VDC power supply is not used A B Dry contacts plug Strobe light Buzzer Fig 6 5 Connection exam...

Page 69: ...ternal alarm unit vari ant 2 1 Connect the wires according to the desired connection diagram 2 An event can be assigned to the dry contacts with Delta Service Software after commissioning 6 6 5 2 Wiri...

Page 70: ...xternal alarm units vari ant 2 1 Connect the wires according to the desired connection diagram 2 An event can be assigned to the dry contacts with Delta Service Software after commissioning 6 6 5 3 Wi...

Page 71: ...ple control receiver Connect the wires according to the desired connection diagram 6 6 7 Connecting the external power off EPO Pin assignments Pin Naming Short cir cuit Assigned action 1 V1 2 K0 V1 K0...

Page 72: ...tion card Installation and Operation Manual M125HV EU V3 EN 2021 07 12 72 6 6 8 Final work 1 Insert the communication card and screw it in place 2 Insert the seal and cable gland of the communication...

Page 73: ...nstallation Connect the mains AC and solar modules DC 6 7 Connect the mains AC and solar modules DC 72 5 76 8 mm 65 1 72 5 mm 58 2 65 1 mm 44 8 58 2 mm 33 0 44 8 mm D1 D2 D4 D5 D3 P1 P2 Fig 6 11 Use o...

Page 74: ...modules DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 74 3 Insert the AC cable with cover and AC cable gland 4 Screw on the cover of the AC connection torque 0 8 Nm 5 Fit and screw o...

Page 75: ...the mains AC and solar modules DC 6 Close both doors and screw them in with a torque Allen wrench torque 4 4 Nm NOTE Ensure doors and screws are straight 7 Plug in the DC cables 8 Turn both DC isolati...

Page 76: ...labels to the inverter Installation and Operation Manual M125HV EU V3 EN 2021 07 12 76 6 8 Attaching warning labels to the inverter All countries Attach all necessary warning labels to the inverter Al...

Page 77: ...nstallation and Operation Manual M125HV EU V3 EN 2021 07 12 6 Installation Connecting a PC via RS485 6 9 Connecting a PC via RS485 Inverter USB RS485 adapter DATA Terminal 3 or 5 D DATA Terminal 4 or...

Page 78: ...pplied with AC or DC voltage The PC is connected to the RS485 bus via a USB RS485 adaptor see 6 9 Connecting a PC via RS485 page 77 The Delta Service Software DSS is installed on the PC Download link...

Page 79: ...sconnect the connection to the grid so that the inverter cannot feed energy into the grid Disconnect the inverter from all AC and DC voltage sources Make sure that none of the connections can be resto...

Page 80: ...This is used to isolate the inverter from the mains and to shut off its AC voltage supply Check that the external load isolating switch is closed AC cable is not connected correctly Check that the AC...

Page 81: ...ted from the power supply Clean or replace the fans Check the connections for all fans W16 DC Surge Lightning has struck near the inverter Check the inverter status One or more surge protection device...

Page 82: ...ient solar radiation Internal error Contact Delta Customer Service F20 HW Efficiency Incorrect calibration Check the accuracy of the voltage and power Internal error Contact Delta Customer Service F22...

Page 83: ...nternal error Contact Delta Customer Service F43 HW CT B Fail Internal error Contact Delta Customer Service F44 HW CT C Fail Internal error Contact Delta Customer Service F45 HW AC OCR Large grid harm...

Page 84: ...s to the OFF position Disconnect the connection to the grid so that the inverter cannot feed energy into the grid Disconnect the inverter from all AC and DC voltage sources Make sure that none of the...

Page 85: ...ections can be restored acciden tally 3 Wait at least 135 seconds for the internal capacitors to discharge There is normally an external load isolating switch between the inverter and the mains e g in...

Page 86: ...ains AC and solar modules DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 86 2 Turn both DC isolating switches to the OFF position 3 Wait at least 135 seconds until the internal capaci...

Page 87: ...accessories Making preparations for work disconnecting the inverter from the mains AC and solar modules DC 5 Secure the left hand door with the Allen wrench 6 Screw on the right hand door with the ot...

Page 88: ...ore voltage at the AC connection If you detect voltage open the external load isolating switch If you detect no voltage proceed to the next step 9 Use a voltmeter to check that there is no more voltag...

Page 89: ...Installing accessories Making preparations for work disconnecting the inverter from the mains AC and solar modules DC 11 Unscrew and pull out the wires of the AC cable 12 Unscrew the cover of the AC...

Page 90: ...85before you start work on the inverter For information on selecting type 1 AC surge pro tection devices see 5 8 Use of type 1 AC surge protection devices page 48 9 3 1 Preparing type 1 AC surge prote...

Page 91: ...3 2 Installing and connecting AC surge protection devices 1 Unscrew and remove the cover of the type 2 AC surge protection devices 2 Unscrew and remove the power cables of the type 2 AC surge protecti...

Page 92: ...nstallation and Operation Manual M125HV EU V3 EN 2021 07 12 92 3 Retighten the nuts with the washers 4 Pull the plug with the PCB cable out of the socket for the type 2 AC surge protection devices and...

Page 93: ...Installation and Operation Manual M125HV EU V3 EN 2021 07 12 9 Installing accessories Install type 1 AC surge protection device 5 Unscrew and remove the cover of the type 1 AC surge protection device...

Page 94: ...allation and Operation Manual M125HV EU V3 EN 2021 07 12 94 6 Connect the type 1 wired AC surge protection devices to the DIN rail 7 Install the cover of the type 1 AC surge protection devices 8 Secur...

Page 95: ...al M125HV EU V3 EN 2021 07 12 9 Installing accessories Install type 1 AC surge protection device 9 Secure the PE cable to the DIN rail 10 Insert the plug with the signal cable into the socket for the...

Page 96: ...ion and Operation Manual M125HV EU V3 EN 2021 07 12 96 11 Insert the plug with the power cable in the socket for the type 1 AC surge protection devices The cabling should now look like this 12 Insert...

Page 97: ...021 07 12 9 Installing accessories Install type 1 AC surge protection device 13 To complete the installation work follow the instructions in the following section 9 5 Finishing the work connect ing th...

Page 98: ...disconnected from all power sources this voltage remains in the inverter for up to 135 seconds Perform the instructions listed in 9 2 Mak ing preparations for work disconnecting the inverter from the...

Page 99: ...olar modules DC There is normally an isolating switch for example in an equipment terminal box between the inverter and the grid and between the solar mod ules This isolates the inverter from all the...

Page 100: ...e inverter to the grid AC and solar modules DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 100 17 Close both doors and screw them in with a torque Allen wrench torque 4 4 Nm NOTE Ensu...

Page 101: ...he work connecting the inverter to the grid AC and solar modules DC 19 To re establish the connection between inverter and mains or inverter and solar modules close the load isolating switch 20 Turn b...

Page 102: ...olating switches to the OFF position Disconnect the connection to the grid so that the inverter cannot feed energy into the grid Disconnect the inverter from all AC and DC voltage sources Make sure th...

Page 103: ...t transformer Checking the fans Perform the following checks every three months Check fan modules air inlets and outlets for soiling and clean them if necessary 10 3 Overview of components that may be...

Page 104: ...ns can be restored acciden tally 3 Wait at least 135 seconds for the internal capacitors to discharge There is normally an isolating switch for example in an equipment terminal box between the inverte...

Page 105: ...rations for maintenance work disconnecting the inverter from the grid AC and solar modules DC 2 Turn both DC isolating switches to the OFF position 3 Wait at least 135 seconds until the internal capac...

Page 106: ...erter from the grid AC and solar modules DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 106 5 Secure the left hand door with the Allen wrench 6 Screw on the right hand door with the o...

Page 107: ...more voltage at the AC connection If you detect voltage open the external load isolating switch If you detect no voltage proceed to the next step 9 Use a voltmeter to check that there is no more volta...

Page 108: ...ing the inverter from the grid AC and solar modules DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 108 11 Unscrew and pull out the wires of the AC cable 12 Unscrew the cover of the AC...

Page 109: ...135 seconds Perform the instructions listed in 10 4 Making preparations for maintenance work disconnecting the inverter from the grid AC and solar modules DC page 104 before you start work on the inve...

Page 110: ...ation and Operation Manual M125HV EU V3 EN 2021 07 12 110 Clean air inlets and clean replace fan modules The procedure is the same for both fan modules The fan modules are replaced as a block 1 Unscre...

Page 111: ...ion Manual M125HV EU V3 EN 2021 07 12 10 Maintenance Clean replace air inlets air outlets and fan modules 3 Pull out the plugs of the two power supply cables 4 Clean the air filter with a compressed a...

Page 112: ...3 EN 2021 07 12 112 5 Clean the fan module with a compressed air cleaner or a firm brush 6 Insert the connectors of the 2 power supply cables until they snap into place It does not matter which power...

Page 113: ...3 Installation and Operation Manual M125HV EU V3 EN 2021 07 12 10 Maintenance Clean replace air inlets air outlets and fan modules 8 Install the air filter with the fins facing downward and screw it i...

Page 114: ...fan modules Installation and Operation Manual M125HV EU V3 EN 2021 07 12 114 Cleaning the air outlets This procedure is the same for both air outlets 9 Unscrew and remove the air filter 10 Clean the a...

Page 115: ...modules 11 Insert and screw on the air filter The fins must be facing downward Completing work on the air filters and fan modules 12 To complete the maintenance work follow the instructions in the fo...

Page 116: ...for maintenance work disconnecting the inverter from the grid AC and solar modules DC page 104 before you start work on the inverter Do not use any sharp pointed or hard objects for cleaning Do not us...

Page 117: ...and Operation Manual M125HV EU V3 EN 2021 07 12 10 Maintenance Clean replace internal fan 1 3 Disconnect the power supply cable of the fan 4 Unscrew the metal housing with the screwed in fan and caref...

Page 118: ...V EU V3 EN 2021 07 12 118 This work step must only be carried out if the fan is to be replaced The work step is not necessary for cleaning the fan 5 Unscrew the fan from the metal housing and pull it...

Page 119: ...e Clean replace internal fan 1 This work step must only be carried out if the fan is to be replaced The work step is not necessary for cleaning the fan 7 Insert and screw the fan into the metal housin...

Page 120: ...lace internal fan 1 Installation and Operation Manual M125HV EU V3 EN 2021 07 12 120 9 Plug in the power supply cable of the fan 10 Install and screw in the air baffle 11 Insert the cover for the DC s...

Page 121: ...EN 2021 07 12 10 Maintenance Clean replace internal fan 1 12 To complete the maintenance work follow the instructions in the following section 10 10 Completing the mainte nance work connecting the inv...

Page 122: ...inverter for up to 135 seconds Perform the instructions listed in 10 4 Making preparations for maintenance work disconnecting the inverter from the grid AC and solar modules DC page 104 before you st...

Page 123: ...r supply cable of the fan is relatively short To avoid damage carefully pull out the metal housing and only to the extent that the plug of the power supply is accessible 2 Unscrew the metal housing wi...

Page 124: ...ual M125HV EU V3 EN 2021 07 12 124 This work step must only be carried out if the fan is to be replaced The work step is not necessary for cleaning the fan 4 Unscrew the fan from the metal housing and...

Page 125: ...2 This work step must only be carried out if the fan is to be replaced The work step is not necessary for cleaning the fan 6 Insert and screw the fan into the metal housing 7 Carefully insert the met...

Page 126: ...eplace internal fan 2 Installation and Operation Manual M125HV EU V3 EN 2021 07 12 126 9 Screw in the metal housing with the screwed in fan 10 Insert and screw in the cover for the AC surge protection...

Page 127: ...EN 2021 07 12 10 Maintenance Clean replace internal fan 2 11 To complete the maintenance work follow the instructions in the following section 10 10 Completing the mainte nance work connecting the inv...

Page 128: ...ration When the inverter is disconnected from all power sources this voltage remains in the inverter for up to 135 seconds Perform the instructions listed in 10 4 Making preparations for maintenance w...

Page 129: ...ion and Operation Manual M125HV EU V3 EN 2021 07 12 10 Maintenance Replacing type 2 AC surge protection devices 3 Pull out the signal cable plug 4 Unscrew and remove the card with the AC surge protec...

Page 130: ...AC surge protection devices Installation and Operation Manual M125HV EU V3 EN 2021 07 12 130 5 Insert and screw in the card with the new AC surge pro tection devices 6 Plug in the signal cable plug 7...

Page 131: ...pe 2 AC surge protection devices 8 Insert and screw in the cover of the AC surge protection devices 9 To complete the maintenance work follow the instructions in the following section 10 10 Completing...

Page 132: ...parations for maintenance work disconnecting the inverter from the grid AC and solar modules DC page 104 before you start work on the inverter The surge protection devices are replaced as a block You...

Page 133: ...d Operation Manual M125HV EU V3 EN 2021 07 12 10 Maintenance Replace type 2 DC surge protection devices 3 Unscrew the signal cable plug and pull it out 4 Unscrew and remove the card with the DC surge...

Page 134: ...e type 2 DC surge protection devices Installation and Operation Manual M125HV EU V3 EN 2021 07 12 134 5 Insert and screw in the card with the new DC surge pro tection devices 6 Insert the signal cable...

Page 135: ...e protection devices 7 Screw in the power supply cable 8 Insert the cover for the DC surge protection devices 9 To complete the maintenance work follow the instructions in the following section 10 10...

Page 136: ...ins AC and solar modules DC There is normally an isolating switch for example in an equipment terminal box between the inverter and the grid and between the solar mod ules This isolates the inverter f...

Page 137: ...07 12 10 Maintenance Completing the maintenance work connecting the inverter to the mains AC and solar modules DC 13 Close both doors and screw them in with a torque Allen wrench torque 4 4 Nm NOTE En...

Page 138: ...s DC Installation and Operation Manual M125HV EU V3 EN 2021 07 12 138 15 To re establish the connection between inverter and mains or inverter and solar modules close the load isolating switch 16 Turn...

Page 139: ...appropriate lifting gear example a hoist or crane It is best to wait before removing the old inverter until you have received the replacement device from Delta Electronics Delta Electronics will prov...

Page 140: ...components are easily accessible 2 To shut off the old inverter s AC voltage open the load isolating switch between the inverter and the mains con nection point Secure the load break switch to prevent...

Page 141: ...25HV EU V3 EN 2021 07 12 11 Replacing the inverter 5 Screw on the left hand door using one of the Allen wrenches supplied 6 Secure the left hand door with the Allen wrench 7 Screw on the right hand do...

Page 142: ...at there is no more voltage at the AC connection If you detect voltage open the external load isolating switch If you detect no voltage proceed to the next step 10 Use a voltmeter to check that there...

Page 143: ...ng the inverter 11 Use the mounting tool to release the DC cables and then pull them out 12 Remove the cover caps for the DC connections from the replacement device and connect them to the DC connec t...

Page 144: ...3 EN 2021 07 12 144 14 Unscrew the cover of the AC cable feed through and pull out the cable together with the cover and AC cable gland 15 Unscrew the cover of the AC cable gland including the AC cabl...

Page 145: ...lly pull out the cover including the cable gland and cable The communication card is attached to the cover 17 On the replacement device unscrew the cover of the com munication connection and pull out...

Page 146: ...V3 EN 2021 07 12 146 19 To lift and move the inverter screw in 2 M12 eyebolts on the top of the inverter 20 Secure the inverter with a block and tackle or with crane so that the weight will be suspen...

Page 147: ...147 Installation and Operation Manual M125HV EU V3 EN 2021 07 12 11 Replacing the inverter 21 Unscrew the grounding cable from the inverter 22 Unscrew the mounting brackets at the feet of the inverter...

Page 148: ...de vice and place it in the box of the replacement device 24 Place all components of the replacement device that will not be needed back into the box 25 Package and ship the old inverter in accordance...

Page 149: ...erature 40 C 860 to 1250 VDC MPP input voltage range at rated power 860 to 1450 VDC Asymmetrical design of the DC inputs Not possible Maximum input current 150 A Maximum DC short circuit current ISC 3...

Page 150: ...50 to 185 mm2 Al 50 to 185 mm2 Excess voltage category III EN 50539 11 Surge protection devices Type 2 EN 61463 11 replaceable type 1 upgradeable Mechanical details M125HV Dimensions W x H x D 900 66...

Page 151: ...IEC 62109 1 2 CE compliance EMC EN 61000 6 2 6 3 3 11 3 12 Noise immunity IEC 61000 4 2 3 4 5 6 8 Distortion factor EN 61000 3 2 Fluctuations and fibrillations EN 61000 3 3 Grid connection guidelines...

Page 152: ...srael supporto israel solar inverter com 800 787 920 toll free Italy supporto italia solar inverter com 800 787 920 toll free Netherlands ondersteuning nederland solar inverter com 0800 022 1104 toll...

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