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ACBox 12-In 1-Out AC Combiner Box
User Manual

7 Maintenance

Issue 03 (2018-05-15)

Huawei Proprietary and Confidential

7.2 Parts Replacement



To ensure personal security, power off the ACBox before replacing a component. For
details, see

6.4 Powering Off the System



After disconnecting the power supply, wait 1 minute and then start parts replacement.



After replacing a component, check the ACBox and then power on the ACBox to verify
that the replacement component works properly. For details, see

6.1 Checking Before

Power-On

and

6.3 Powering On the System



Dispose of faulty components in accordance with the local disposal act for waste electrical
equipment.

7.2.1 Replacing the AC Input Circuit Breaker

Prerequisites



The AC input circuit breaker is faulty.



A spare AC input circuit breaker of the same model is available and functional.

Procedure

Step 1

Remove the copper bar and cables from the faulty circuit breaker and label the cables.

Step 2

Unscrew the circuit breaker.

Figure 7-1

Removing a faulty circuit breaker

Step 3

Install the new circuit breaker.

Step 4

Connect the copper bar and cables to the new circuit breaker based on the cable labels.

----End

Summary of Contents for ACBox Series

Page 1: ...ACBox 12 In 1 Out AC Combiner Box User Manual Issue 03 Date 2018 05 15 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ... Huawei and the customer All or part of the products services and features described in this document may not be within the purchase scope or the usage scope Unless otherwise specified in the contract all statements information and recommendations in this document are provided AS IS without warranties guarantees or representations of any kind either express or implied The information in this docum...

Page 3: ... Symbol Conventions The symbols that may be found in this document are defined as follows Symbol Description Indicates an imminently hazardous situation which if not avoided will result in serious injury or death Indicates a potentially hazardous situation which if not avoided could result in serious injury or death Indicates a potentially hazardous situation which if not avoided may result in min...

Page 4: ...Technologies Co Ltd iii Change History Changes between document issues are cumulative The latest document issue contains all updates made in previous issues Issue 03 2018 05 15 Updated 5 4 Opening the Enclosure Door Issue 02 2018 02 12 Updated 5 1 Cable Specifications Issue 01 2017 10 16 This issue is used for first office application FOA ...

Page 5: ...stallation Position 13 4 4 Installing the Mounting Bracket 14 4 4 1 Wall mounted Installation 15 4 4 2 Support mounted Installation 17 4 4 3 Pole mounted Installation 19 4 5 Installing the ACBox 20 5 Electrical Connections 23 5 1 Cable Specifications 23 5 2 Crimping the OT Terminal 24 5 3 Knocking Off Barrier Chips from Cable Holes 25 5 4 Opening the Enclosure Door 26 5 5 Installing the PE Cable 2...

Page 6: ...Huawei Technologies Co Ltd v 6 5 Closing the Enclosure Door 35 7 Maintenance 36 7 1 Routine Maintenance 36 7 2 Parts Replacement 37 7 2 1 Replacing the AC Input Circuit Breaker 37 7 2 2 Replacing the AC Output Circuit Breaker 38 7 2 3 Replacing the Power SPD 39 8 Technical Specifications 41 A Acronyms and Abbreviations 42 ...

Page 7: ... before operations Huawei shall not be liable for any device damage caused by violation of the storage transportation installation and operation regulations specified in this document The safety precautions provided in this document do not cover all the safety precautions Huawei shall not be liable for any consequence caused by the violation of the safety operation regulations and design productio...

Page 8: ... on fire in any case When the operation is performed in a damp environment ensure that the equipment is dry When water is found in the cabinet or the cabinet is damp switch off the power supply immediately Equipment Security Before operation ensure that the equipment is firmly anchored to the floor or other solid objects such as a wall or an installation rack Use a tool to tighten screws when inst...

Page 9: ... arcs or sparks which may cause fire or personal injury Before installing or removing a power cable turn off the upstream power switch and use a multimeter to check that the AC voltage of the input port is zero Before connecting a power cable check that the label on the power cable is correct Do not connect a single phase AC power cable reversely Otherwise equipment may be damaged Component To ens...

Page 10: ...s Up to 12 SUN2000L 4 125KTL JP units Up to 10 SUN2000L 4 95KTL JP units The SUN2000L 4 125KTL JP and SUN2000L 4 95KTL JP are both abbreviated as SUN2000L in the following text Models Figure 2 1 shows the designation explanation of the ACBox Figure 2 1 Designation explanation System Application The ACBox applies to a low voltage single phase three wire grid tied PV system that typically consists o...

Page 11: ...ual 2 Overview Issue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 5 Figure 2 2 System application A PV string B SUN2000L C ACBox D Low voltage power grid 2 2 Appearance Dimensions Figure 2 3 Dimensions ...

Page 12: ...ser Manual 2 Overview Issue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 6 Front View Figure 2 4 Front view 1 Enclosure door 2 Enclosure door lock Rear view Figure 2 5 Rear view 1 Mounting plate ...

Page 13: ...meter 76 mm 2 Cable hole 1 for the AC input power cable AC INPUT1 Connects to the AC input power cable Inner diameter 76 mm 3 PE point N A N A 4 Ventilation valve N A N A 5 Cable hole 2 for the AC input power cable AC INPUT2 Connects to the AC input power cable Inner diameter 76 mm 2 3 Label Description Enclosure Labels Table 2 2 describes the labels on the ACBox enclosure Table 2 2 Enclosure labe...

Page 14: ...arried by more than one person Nameplate The ACBox is labeled with a nameplate on the side that contains the model information technical specifications and compliance symbols as shown in Figure 2 7 Figure 2 7 Nameplate 1 Trademark product name and model number 2 Important technical specifications 3 Compliance symbols 4 Company name and country of manufacture The nameplate figure is for reference o...

Page 15: ...ipment WEEE This product must not be disposed of as domestic waste 2 4 Working Principles The ACBox works with Huawei SUN2000L It combines the outputs from up to 12 SUN2000L 4 125KTL JP units or 10 SUN2000L 4 95KTL JP units and provides surge protection and overcurrent protection Figure 2 8 shows the ACBox working principles by using the access from 12 SUN2000L 4 125KTL JP units as an example Figu...

Page 16: ...o not unpack the ACBox Keep the storage temperature at 30 C to 70 C and the humidity at 5 95 RH The ACBox should be stored in a clean and dry place and be protected from dust and water vapor corrosion A maximum of three ACBoxes can be stacked Regular inspection is required during the storage Replace the packing materials when necessary After long term storage an inspection and test conducted by qu...

Page 17: ...s found do not unpack the ACBox and contact the dealer immediately You are advised to remove the outer packaging within 24 hours before installing the ACBox Package Contents After unpacking the ACBox check that the contents are intact and complete If any damage is found or any component is missing contact your dealer For details about the number of contents see the Packing List in the packing case...

Page 18: ...ential Copyright Huawei Technologies Co Ltd 12 Type Tools and Instruments Torque screwdriver Wire stripper Diagonal pliers Rubber mallet Utility knife Cable cutter Hydraulic pliers Crimping tool Heat shrink tubing Heat gun Multimeter Vacuum cleaner Measuring tape Bubble or digital level Marker Cable tie N A N A ...

Page 19: ...nment Requirements The ACBox must be installed in a well ventilated environment to ensure good heat dissipation so that the ACBox can operate in the temperature range of 20 C to 50 C Mounting Structure Requirements The mounting structure where the ACBox is installed must be fireproof Do not install the ACBox on flammable building materials The ACBox weighs 46 kg Ensure that the installation surfac...

Page 20: ...4 1 Installation space 4 4 Installing the Mounting Bracket Figure 4 2 shows the ACBox mounting bracket dimensions Figure 4 2 Mounting bracket dimensions The ACBox mounting bracket has four groups of tapped holes each group containing four tapped holes Mark any hole in each group based on site requirements and mark four holes in total Two round holes are preferred ...

Page 21: ...tions of mounting holes using a bubble or digital level and mark the positions with a marker Figure 4 3 Determining hole positions Step 2 Drill holes using a hammer drill and install expansion bolts Avoid drilling holes in the utility pipes and or cables attached to the back of the wall M12x60 expansion bolts are supplied with the ACBox Figure 4 4 shows the components of an M12x60 expansion bolt F...

Page 22: ...of holes Level the head of the expansion sleeve with the concrete wall after removing the bolt spring washer and flat washer Otherwise the mounting bracket will not be securely installed on the concrete wall 1 Drill a hole at a marked hole position in the wall using a hammer drill 2 Vertically insert an expansion bolt into a hole and knock the expansion bolt completely into the hole using a rubber...

Page 23: ...d 17 Figure 4 6 Securing a mounting bracket End 4 4 2 Support mounted Installation Procedure Step 1 Determine the positions for drilling holes using the mounting bracket Level the positions of mounting holes using a bubble or digital level and mark the positions with a marker Figure 4 7 Determining hole positions Step 2 Drill holes using a hammer drill ...

Page 24: ...ly anti rust paint on the hole positions for protection Figure 4 8 Drilling holes Step 3 Align the mounting bracket holes with the drilled holes insert bolt assemblies flat washers spring washers and M12x40 bolts into the holes through the mounting bracket and secure them using the supplied stainless steel nuts and flat washers M12x40 bolt assemblies are supplied with the ACBox ...

Page 25: ...stallation Prerequisites To pole mount a ACBox you need to prepare pole mounting brackets by yourself based on the mounting bracket dimensions You are advised to use M12 U shaped bolts to secure the pole mounting brackets Figures provided in this chapter are for reference only The actual poles and pole mounting brackets prevail Procedure Step 1 Secure the pole mounting brackets to the pole and tig...

Page 26: ...s flat washers spring washers and M12x40 bolts into the holes through the mounting bracket and secure them using the supplied stainless steel nuts and flat washers M12x40 bolt assemblies are supplied with the ACBox Figure 4 11 Securing a mounting bracket End 4 5 Installing the ACBox Procedure Step 1 Two operation personnel hold the handles on both sides of the ACBox lift the ACBox from the packing...

Page 27: ...n you need to temporally place the ACBox on the ground use foam paper or other protection material to prevent damage to its cover Figure 4 12 Transporting a ACBox Step 2 Remove the security torx wrench and enclosure door key from the base of the enclosure and save them for later use Figure 4 13 Positions for the security torx wrench and key Step 3 Install the ACBox on the mounting bracket and alig...

Page 28: ...stallation Issue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 22 Figure 4 14 Mounting a ACBox Step 4 Tighten the security torx screws using a security torx wrench Figure 4 15 Tightening security torx screws End ...

Page 29: ...ocks Huawei shall not be liable for any device damage caused by violation of the cable connection regulations specified in this document Only certified electricians are allowed to connect cables Ware proper PPE at all time when connecting cables The cable colors shown in cable connection diagrams are for reference only Select cables according to local cable specifications 5 1 Cable Specifications ...

Page 30: ...ed Model or Specifications Cross sectional Area Range of the Cable Cable Source 2 AC output power cable Three core outdoor armored copper cable with an OT M12 terminal 150 200 mm2 Prepared by the customer 3 PE cable Single core green outdoor copper cable with an OT M6 terminal 3 5 22 mm2 Prepared by the customer 5 2 Crimping the OT Terminal Figure 5 1 shows how to crimp an OT terminal ...

Page 31: ...crimping area with heat shrink tubing or PVC insulation tape The following figure uses heat shrink tubing as an example When using the heat gun protect devices from being scorched Figure 5 1 Crimping the OT Terminal A Core wire B Insulation layer C Heat shrink tubing D Hydraulic pliers E Heat gun 5 3 Knocking Off Barrier Chips from Cable Holes Before connecting the PE cable or AC input and output ...

Page 32: ...s for the AC input and output power cables are sharp Recommended Use a file to smooth the edges of the cable holes Protect yourself during operation from being hurt The FEK 65B cable glands of Mirai Industry Co Ltd are recommended for the cable holes for the AC input and output power cables Figure 5 2 Knocking off the barrier chip from a cable hole 5 4 Opening the Enclosure Door Prerequisites ...

Page 33: ... or snowy days take protective measures to prevent rain and snow entering the cabinet If it is impossible to take protective measures do not open the enclosure door in rainy or snowy days Procedure Step 1 Insert the key in the lock hole to unlock the enclosure door Step 2 Open the enclosure door and use the support bar to stabilize the door Figure 5 3 Stabilizing a door using a support bar Step 3 ...

Page 34: ... an OT terminal on the PE cable Step 2 Optional Knock off the barrier chip from a cable hole at the bottom of the ACBox For details see 5 3 Knocking Off Barrier Chips from Cable Holes Before connecting the PE cable for the first time knock off the barrier chip from the cable hole for the AC output power cable using a rubber mallet Connect the PE cable to the nearest ground bar Recommended Route th...

Page 35: ...he PE cable 5 6 Installing the AC Input Power Cable Prerequisites The AC input power cable and OT M5 terminal are available Context Connect the AC input power cable from the ACBox to input circuit breakers QF01 to QF12 Recommended Route the AC input power cables to input circuit breakers QF01 to QF06 through cable hole 1 route the AC input power cables to input circuit breakers QF07 to QF12 throug...

Page 36: ...rom the AC input power cables to input circuit breakers QF07 to QF12 refer to the AC input power cables to input circuit breakers QF01 to QF06 Figure 5 6 Stripping anAC input power cable 1 Core wire 2 Insulation layer 3 Jacket Step 2 Crimp an OT terminal Step 3 Route the cables through the cable holes 1 and 2 for the AC input power cable Step 4 Connect the AC input power cable to the U O and W ter...

Page 37: ...t power cable End 5 7 Installing the AC Output Power Cable Prerequisites The AC output power cable and OT M12 terminal are available Procedure Step 1 Remove an appropriate length of the jacket and insulation layer from the AC output power cable using a wire stripper When connecting a stripped cable ensure that the exposed insulation layer is in the enclosure and the jacket is outside the enclosure...

Page 38: ... wire 2 Insulation layer 3 Jacket Step 2 Crimp an OT terminal Step 3 Route the cable through the cable hole for the AC output power cable Step 4 Connect the AC output power cable to the U O and W terminals on circuit breaker QF13 and tighten the bolts using a torque wrench Figure 5 9 ConnectingAC output power cables When using a torque wrench to tighten a bolt use an M12 wrench to tighten the nut ...

Page 39: ... securely and bound neatly without exposed metal 3 All used cable holes at the enclosure bottom are blocked by fireproof material 4 All switches in the enclosure are off 5 The enclosure interior is clean without dust dirt or foreign matter 6 The paint on the enclosure exterior is intact If paint has flaked off repaint that area to prevent corrosion 6 2 Installing the Cover Prerequisites You have c...

Page 40: ... You have put on insulation gloves Procedure Step 1 Switch circuit breaker QF13 on the AC output side to ON Step 2 Switch circuit breakers QF01 to QF12 on the AC input side to ON one by one End 6 4 Powering Off the System Prerequisites You have put on insulation gloves Procedure Step 1 Switch circuit breakers QF01 to QF12 on the AC input side to OFF one by one Step 2 Switch circuit breaker QF13 on...

Page 41: ...ssue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 35 6 5 Closing the Enclosure Door Procedure Step 1 Retrieve the support bar Figure 6 2 Retrieve a support bar Step 2 Rotate the enclosure door lock to lock the door End ...

Page 42: ...s take protective measures to prevent rain and snow entering the cabinet If it is impossible to take protective measures do not open the cabinet door in rainy or snowy days Table 7 1 Maintenance checklist Item Check Method Maintenance Interval Cabinet Check that the ACBox is not damaged or deformed Check that there is no dust or dirt in the ACBox Once every twelve months System running status Chec...

Page 43: ...ent works properly For details see 6 1 Checking Before Power On and 6 3 Powering On the System Dispose of faulty components in accordance with the local disposal act for waste electrical equipment 7 2 1 Replacing the AC Input Circuit Breaker Prerequisites The AC input circuit breaker is faulty A spare AC input circuit breaker of the same model is available and functional Procedure Step 1 Remove th...

Page 44: ...ulty AC output circuit breaker using a socket wrench that has an extension rod and label the cables Figure 7 2 Removing cables and a copper bar When removing connecting copper bars and cables using a socket wrench arrange another person to hold the nuts using an M12 wrench Step 2 Remove the wiring copper plates from the bottom of the faulty AC output circuit breaker using a socket wrench that has ...

Page 45: ... Install the wiring copper plates at the bottom of the AC output circuit breaker Step 8 Connect the copper bar and cables to the new circuit breaker based on the cable labels End 7 2 3 Replacing the Power SPD Prerequisites The power SPD is faulty A spare power SPD of the same model is available and functional If an SPD is damaged or its indication window is displayed in red replace the SPD because...

Page 46: ... Box User Manual 7 Maintenance Issue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 40 Figure 7 4 Removing a faulty surge protection module Step 2 Install the new surge protection module End ...

Page 47: ... mm Weight 46 kg Operating temperature 20 C to 50 C Humidity 5 95 RH Maximum altitude 3000 m Ingress Protection Rating IP65 Rated operating voltage 202 V 1φ3W Rated operating frequency 50 Hz 60 Hz Rated input current 12 x 20 5 A or 10 x 24 5 A Rated output currenta 246 A Cable routing Routed in and out from the bottom Maintenance mode Maintained from the front Installation mode Installed on a wall...

Page 48: ...Acronyms and Abbreviations Issue 03 2018 05 15 Huawei Proprietary and Confidential Copyright Huawei Technologies Co Ltd 42 A Acronyms and Abbreviations A AC alternating current D DC direct current R RH relative humidity S SPD surge protective device ...

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