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STS-6000K-H1 Smart Transformer Station (Vietnam,
Duc Long Gai Lai)
Installation Guide

About This Document

Issue 02 (2020-02-21)

Copyright © Huawei Technologies Co., Ltd.

ii

About This Document

Purpose

This document describes how to install the STS-6000K-H1 smart transformer station (STS for
short). Before installing the STS, read through this document, get familiar with the features,
functions, and safety precautions provided in this document.

Figures used in this document are for reference only.

Intended Audience

This document is intended for photovoltaic (PV) plant operators and qualified electricians.

Symbol Conventions

The symbols that may be found in this guide are defined as follows.

Symbol

Description

Indicates a hazard with a high level of risk which, if not
avoided, will result in death or serious injury.

Indicates a hazard with a medium level of risk which, if not
avoided, could result in death or serious injury.

Indicates a hazard with a low level of risk which, if not
avoided, could result in minor or moderate injury.

Indicates a potentially hazardous situation which, if not
avoided, could result in equipment damage, data loss,
performance deterioration, or unanticipated results.

NOTICE is used to address practices not related to personal
injury.

Supplements the important information in the main text.

NOTE is used to address information not related to personal
injury, equipment damage, and environment deterioration.

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Summary of Contents for STS-6000K-H1

Page 1: ...STS 6000K H1 Smart Transformer Station Vietnam Duc Long Gai Lai Installation Guide Issue 02 Date 2020 02 21 HUAWEI TECHNOLOGIES CO LTD ...

Page 2: ...tomer 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 document is subject to c...

Page 3: ...tions The symbols that may be found in this guide are defined as follows Symbol Description Indicates a hazard with a high level of risk which if not avoided will result in death or serious injury Indicates a hazard with a medium level of risk which if not avoided could result in death or serious injury Indicates a hazard with a low level of risk which if not avoided could result in minor or moder...

Page 4: ...ologies Co Ltd iii Change History Updates between document issues are cumulative The latest document issue contains all the changes in earlier issues Issue 02 2020 02 21 Updated 5 3 Installing the Rainproof Canopy for the Pressure Release Valve Updated 7 6 Connecting Cables to an SACU Issue 01 2019 11 08 This issue is the first official release ...

Page 5: ...ents 10 2 2 1 STS 10 2 2 2 LV Room 11 2 2 3 Transformer Room 11 2 2 4 MV Room 13 3 Equipment Installation 15 3 1 Site Requirements 15 3 2 Preparing Tools 17 3 3 Hoisting Equipment 19 3 4 Hoisting Verification 23 3 5 Securing a Container 23 4 STS Overall Check 25 5 Operating Components 26 5 1 Opening or Closing a Cabinet Door 26 5 2 Interlocking Between STSs with a CVC Ring Main Unit 30 5 3 Install...

Page 6: ...or the STS 43 7 3 Connecting an AC Input Power Cable 45 7 4 Installing a Lightning Arrester for the Ring Main Unit 48 7 5 Connecting an AC Output Power Cable 51 7 6 Connecting Cables to an SACU 54 7 7 Optional Connecting Cables to the UPS 57 8 Verifying the Installation and Cable Connections 63 A FAQ 64 A 1 How Do I Repair Paint Damage on the Container 64 A 2 Requirements for the STS 6000K H1 Foun...

Page 7: ...may become faulty and the resulting equipment malfunction component damage personal injuries or property damage are not covered under the warranty Follow local laws and regulations when installing operating or maintaining the equipment The safety instructions in this document are only supplements to local laws and regulations Huawei will not be liable for any consequences of the following circumst...

Page 8: ...od of time Do not open the host panel of the equipment Do not install other equipment on the top of a container without evaluation by Huawei Do not perform operations such as arc welding drilling and cutting on the top of a container Otherwise the top of the container may be damaged which may cause water leakage When performing operations such as hoisting over the top of a container take measures ...

Page 9: ...n operations and are able to take protective measures to minimize the hazards on themselves and other people Operators operation personnel who may come in contact with the equipment except trained personnel and professionals 1 3 Electrical Safety Grounding For the equipment that needs to be grounded install the ground cable first when installing the equipment and remove the ground cable last when ...

Page 10: ...ion layer of the cables Bind cables of the same type together When routing cables of different types ensure that they are at least 30 mm away from each other Ensure that the cables used in a grid tied PV power system are properly connected and insulated and meet specifications 1 4 Site Requirements Ensure that the equipment is installed in a well ventilated environment To prevent fire due to high ...

Page 11: ...ing at heights When a step ladder is used ensure that the pull ropes are secured and the ladder is held firm Before using a ladder check that it is intact and confirm its load bearing capacity Do not overload it Ensure that the wider end of the ladder is at the bottom or protective measures have been taken at the bottom to prevent the ladder from sliding Ensure that the ladder is securely position...

Page 12: ...into a wall or floor observe the following safety precautions Wear goggles and protective gloves when drilling holes When drilling holes protect the equipment from shavings After drilling clean up any shavings that have accumulated inside or outside the equipment Moving Heavy Objects Be cautious to avoid injury when moving heavy objects When moving the equipment by hand wear protective gloves to p...

Page 13: ...ore maintaining the transformer station turn off the switches on the LV side and then the high voltage HV side of the STS Before maintaining the transformer station turn off the ACB at the LV side and the switch at the HV side and attach warning labels to ensure that the equipment will not be powered on by accident Maintain the equipment with sufficient knowledge of this document and using proper ...

Page 14: ...t Transformer Station Vietnam Duc Long Gai Lai Installation Guide 2 Product Overview Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 8 2 Product Overview 2 1 Appearance of the STS 6000K H1 Figure 2 1 Appearance ...

Page 15: ...ion for the distributed power system uninterruptible power supply UPS 5 Position for the smart array controller SACU 6 Double swing door of the MV room 7 Ring main unit 8 Auxiliary transformer 9 Double swing screen door for the transformer room 10 AC input cable hole LV PANEL B 11 Manhole entrance 12 AC input cable hole LV PANEL A 13 Single swing door for the LV room 14 Double swing door for the L...

Page 16: ...rview Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 10 Figure 2 3 Dimensions of the anchor pad 2 2 Components 2 2 1 STS Figure 2 4 STS components 1 LV PANEL A 2 Heat exchanger 3 Smoke sensor 4 LV PANEL B 5 Transformer 6 Ring main unit 7 Power distribution box PDB 8 Auxiliary transformer ...

Page 17: ... ON button 9 Transfer switch 10 Air circuit breaker ACB 11 AC input switch The LV room of a particular model uses a multifunctional meter that combines the functions of parts 3 and 4 The following figure uses the separate voltmeter and ammeter as an example 2 2 3 Transformer Room The transformer room is used to convert the LV AC power into the MV AC power The main equipment is a transformer config...

Page 18: ...s flow in the transformer the reed switch contact for oil flow will be closed and the circuit breaker of the ring main unit will trip 2 Oil surface thermometer Measures and controls the temperature of the top layer of transformer oil Displays the top layer of transformer oil in real time and issues alarms and trip signals through the built in temperature control switch 3 Oil feed and drain valve R...

Page 19: ...There are five levels Level 1 indicates the maximum tapping value level 3 indicates the rated tapping value and level 5 indicates the minimum tapping value 7 Oil inlet and outlet valve of the oil cabinet Refills or drains oil Oil refilling Refill the transformer oil using an uncontaminated metal or non rubber hose and oil injection equipment Note Prevent air from entering Oil draining Lead the tra...

Page 20: ...Long Gai Lai Installation Guide 2 Product Overview Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 14 Figure 2 7 DQS 24 CVC 1 Operation hole of grounding switches 2 Operation hole of disconnectors 3 Cable connectors 4 Cable clamps 5 Ground bar ...

Page 21: ...from airports landfills river banks seacoasts and dams Be an open area and at least 10 m from obstacles in all directions Be at least 50 m away from residential areas to avoid noise pollution Have a temperature ranging from 25 C to 60 C When the ambient temperature exceeds 55 C select an installation place with shade or set up an awning Foundation Before installation build a concrete pad and a tre...

Page 22: ...istance between the container and the platform is greater than or equal to 0 8 m Scenario in which the distance between the platform and the ground is greater than 0 5 m The distance between the container and the platform is greater than or equal to 1 3 m 2 Cabling space at the bottom If there is no maintenance space at the bottom it is recommended that the cabling space at the bottom of the conta...

Page 23: ...ion Tools Tool Hammer drill Drill bit Ф26 mm Socket wrench Torque wrench Torque screwdriver Phillips head ST4 8 M4 M5 M6 Flat head M3 Diagonal pliers Wire strippers Adjustable wrench Opening 14 mm 18 mm Rubber mallet Utility knife Nipper Open end torque wrench Opening 18 mm 29 mm Combination wrench Pipe wrench Allen wrench M6 Crimping tool Electrician s knife File Vacuum cleaner Multimeter Marker ...

Page 24: ...l Measuring tape Bubble or digital level Hydraulic pliers Heat shrink tubing Heat gun Cable tie Leather measuring tape Hacksaw Cable stripper Crane Hoisting capability 50 t working radius 10 m Lifting rope and fastener Length of the lifting rope 6 5 m Claw hammer Step ladder N A N A N A Safety Tools Tool Insulated ladder Flashlight Spare fuse for MV switchgear Access key ...

Page 25: ...isher Insulation pad Insulation gloves Snake proof gaiters Reflective vest N A N A N A Rescue pole Voltage detector The tool pictures are for reference only The tool tables may not list out some tools required onsite Onsite installation personnel and the customer need to prepare the tools based on site requirements Some dedicated tools and installation materials supplied with the product may not b...

Page 26: ...the working radius is not less than 10 m If the onsite environment does not meet the required working conditions ask a professional to assess the conditions Only trained and qualified personnel should perform hoisting operations Check that hoisting tools are available and in good condition Ensure that the hoisting tools are secured to a load bearing object or wall The weather condition should be g...

Page 27: ...e ropes after ensuring that the container is placed evenly on the container bases Do not drag steel ropes and hoisting tools or bump hoisted objects against hard objects during hoisting Secure the container you have hoisted before hoisting another container Procedure Step 1 Determine the installation position of the container based on the foundation design drawings Step 2 Measure the support point...

Page 28: ...ng equipment Step 4 Remove the rainproof cloth from the container Step 5 Remove the customs lock using a pressure clamp Step 6 Level the container If it is difficult to open or close the container door take out metal washers from the fittings and place them under the container support feet You can adjust the container door for multiple times until it can be opened and closed smoothly ...

Page 29: ...the supplied number of accessories see the packing list The documents delivered with the product are important and should be kept properly 2 Container door All container doors can be smoothly opened and closed 3 Container enclosure The container enclosure is not deformed or cracked 3 5 Securing a Container Step 1 Secure a container There are four mounting holes where angle steel brackets contact t...

Page 30: ...TS 6000K H1 Smart Transformer Station Vietnam Duc Long Gai Lai Installation Guide 3 Equipment Installation Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 24 Figure 3 3 Securing a container End ...

Page 31: ...nter of the SF6 barometer is in the green area and is at a certain distance from the yellow or red area If the pointer is close to the yellow or red area take a photo and contact Huawei technical support 4 Switch mechanical operation test 1 Turn on and off the ACB in the LV cabinet for two times The operation is successful 2 Turn on and off all MCCBs in the LV cabinet for two times The operation i...

Page 32: ...20 02 21 Copyright Huawei Technologies Co Ltd 26 5 Operating Components When operating a transformer ensure that the transformer is in the no excitation state that is the high and low voltage sides of the transformer are not energized 5 1 Opening or Closing a Cabinet Door Common Cabinet Door Step 1 Open a cabinet door ...

Page 33: ...mart Transformer Station Vietnam Duc Long Gai Lai Installation Guide 5 Operating Components Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 27 Figure 5 1 Opening a cabinet door Step 2 Close the cabinet door ...

Page 34: ...ansformer Station Vietnam Duc Long Gai Lai Installation Guide 5 Operating Components Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 28 Figure 5 2 Closing the cabinet door End Screen Door Step 1 Open a cabinet door ...

Page 35: ...mart Transformer Station Vietnam Duc Long Gai Lai Installation Guide 5 Operating Components Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 29 Figure 5 3 Opening a cabinet door Step 2 Close the cabinet door ...

Page 36: ...binet G1 does not have a switch mark the door number of the cable room Cabinet G1 of each STS connects to the power grid Do not exchange the cables connected to cabinets G1 and G3 Otherwise the interlocking between STSs will be in disorder Put the interlock keys between STSs on key rings according to the cascading diagram For the same MV cable put the key of its grounding switch in cabinet G3 and ...

Page 37: ...nd the K1 key of cabinet G1 in STS 2 on the same key ring Mark the STS and switch numbers on the labels The operations for STS 2 and STS 3 are similar Turn on the grounding switch of cabinet G3 in the last STS Remove the K2 key and hand it over to the O M personnel For the first STS closest to the booster station the key to the grounding switch of cabinet G1 needs to be interlocked with the outgoi...

Page 38: ...e Step 1 Remove the cover from the pressure release valve Step 2 Install the rainproof canopy delivered with the STS on the pressure release valve Figure 5 6 Installing the rainproof canopy for the pressure release valve End 5 4 Installing a Dehydrating Breather A position for installing a common or maintenance free dehydrating breather has been reserved in the STS Install a proper dehydrating bre...

Page 39: ...dehydrating breathers 1 Position of the dehydrating breather for STS 6000K H1 5 4 1 Installing a Common Dehydrating Breather Step 1 Remove the flange cover from the position to install the dehydrating breather Step 2 Secure the dehydrating breather There is a sealing washer between the flange cover and dehydrating breather When tightening the bolt ensure that the sealing washer is 1 4 compressed i...

Page 40: ...ide 5 Operating Components Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 34 Figure 5 8 Securing the dehydrating breather Step 3 Remove the end cover from the dehydrating breather Step 4 Add transformer oil to the cover of the dehydrating breather and reinstall the cover ...

Page 41: ...mponents Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 35 Figure 5 9 Securing the end cover End 5 4 2 Installing a Maintenance Free Dehydrating Breather Step 1 Remove the flange cover from the dehydrating breather Step 2 Secure the dehydrating breather using the bolts and nuts delivered ...

Page 42: ...t Huawei Technologies Co Ltd 36 Figure 5 10 Installing a dehydrating breather Step 3 Adjust the position of the dehydrating breather to ensure that the maintenance compartment door faces the operator Step 4 Tighten the locking nut of the dehydrating breather Step 5 Remove the dustproof cover from the bottom of the dehydrating breather ...

Page 43: ... Adjusting the dehydrating breather Step 6 Install a protective earthing PE cable for the dehydrating breather Apply silica gel or paint on the ground terminal to protect it against corrosion Figure 5 12 Installing a PE cable Step 7 Open the maintenance compartment door of the dehydrating breather Step 8 Install cables in the maintenance compartment of the dehydrating breather ...

Page 44: ...he PE cable is securely connected to the maintenance compartment door of the dehydrating breather and close the maintenance compartment door Avoid damaging the PE cable when closing the maintenance compartment door Figure 5 13 Installing cables in the maintenance compartment End 5 5 Operating an Oil Surface Thermometer Step 1 Rotate the cover counterclockwise to remove the glass cover ...

Page 45: ...Copyright Huawei Technologies Co Ltd 39 Step 2 Take out the foam Step 3 Rotate the cover clockwise to reinstall the glass cover Ensure that the white pointer is on the left and the red pointer is on the right Step 4 Rotate the knob to put the red and white pointers together Figure 5 14 Operating an oil surface thermometer End ...

Page 46: ...wei Technologies Co Ltd 40 6 STS Insulation Tests The STS insulation tests cover the transformer MV side ring main unit transformer LV side bus on the LV side and auxiliary loop For details see the STS 3000K 6000K H1 Smart Transformer Station User Manual Perform the insulation tests before connecting incoming cables and sealing cable holes ...

Page 47: ...and prevent poor cable connection The cable colors shown in the electrical connection diagrams provided in this chapter are for reference only Select cables in accordance with local cable specifications green and yellow cables are only used for protective earthing Wiring Requirements Cables should be arranged neatly and the cable insulation layer should be intact The cable connectors prepared onsi...

Page 48: ... identification Cables should not be overly bent to avoid damage the cable cores Cables should not be tied where they bend 7 1 Preparing Cables Cables should have sufficient current carrying capacity and should not be overloaded Cables with the same functions should have the same specifications and type Figure 7 1 Cable connections configure the components in the dotted box as required A Side view...

Page 49: ...hree core or four core outdoor copper cable 2 5 16 mm2 10 32 mm Prepared by the customer 6 Optional Site auxiliary power supply cable Two core or three core outdoor copper cable 2 5 10 mm2 6 20 mm Prepared by the customer 7 Cabinet G1 cable Single core or three core outdoor copper copper clad aluminum aluminum alloy cable and separable shielded cable connectors 70 300 mm2 Single core 30 52 mm Thre...

Page 50: ...o a PE cable Connect the PE cable to the chassis shell or the ground point of the main ground bar in the LV room Procedure Step 1 Connect a PE cable Figure 7 2 Connecting a PE cable to the chassis shell Figure 7 3 Connecting a PE cable to the main ground bar in the LV room End Follow up Procedure To enhance the corrosion resistance of a ground terminal apply silica gel or paint on it after connect...

Page 51: ...r aluminum wiring terminals along with copper to aluminum washers Do not connect aluminum wiring terminals to the AC terminal block Otherwise electrochemical corrosion may occur affecting the reliability of cable connections Comply with the IEC 61238 1 requirements when using copper to aluminum wiring terminals or aluminum wiring terminals along with copper to aluminum washers Do not mix up the al...

Page 52: ...er Station Vietnam Duc Long Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 46 Figure 7 5 Dimensions of the AC terminal block Procedure Step 1 Connect an AC input power cable ...

Page 53: ... m when securing the cable The wiring terminal must be installed with heat shrink tubing at the crimping area of the cable conductor to ensure that the electrical clearance between the conductors is greater than 20 mm Lay out the AC input power cable according to the design route the cable to the correct wiring position on the corresponding switch and label the cable Figure 7 6 Connecting an AC in...

Page 54: ...e the lightning arrester must be installed in a sunny dust free and wind free environment During the installation clean the insulation surface insulation plug and rear tee connector surface of the lightning arrester using a clean cloth and apply silicone grease evenly The lightning arrester of the ring main unit is delivered with the cabinet For details see the installation guide provided by the m...

Page 55: ...ion Vietnam Duc Long Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 49 Figure 7 8 Adjusting the height of the support for the lightning arrester Step 2 Install a lightning arrester ...

Page 56: ...er Station Vietnam Duc Long Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 50 Figure 7 9 Installing a lightning arrester Step 3 Secure the support for the lightning arrester ...

Page 57: ... ensure that the grounding switch of cabinet G1 in the ring main unit of the STS is turned off Before turning on the grounding switch of cabinet G1 turn off the switch in the upstream cabinet G3 If multiple STSs are cascaded cabinet G3 of the last STS should be installed with insulation plugs by the Engineering Procurement Construction EPC party Route cables to corresponding positions according to...

Page 58: ... Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 52 Figure 7 11 Connecting an AC output power cable a single STS Figure 7 12 Connecting AC output power cables multiple STSs cascaded The cable room of the load switch cabinet supports the access of two rows of cables The actual situation prevails ...

Page 59: ...cables Step 3 Fill the rubber insulation layer removed when preparing the cables between the cables and the cable clips to ensure that the cables are securely connected Figure 7 14 Securing cables If the cables are not securely connected the ring main unit may be damaged causing gas leakage Step 4 Seal the bottom cable hole using firestop putty clear the cable room sundries and close the door End ...

Page 60: ...9 3X1 1 2 SACU L1 1 730 3X1 2 2 SACU L2 1 731 3X1 3 2 SACU L3 1 732 3X1 4 2 SACU FE01 Route 2 733 3X1 5 2 SACU L1 2 734 3X1 6 2 SACU L2 2 735 3X1 7 2 SACU L3 2 736 3X1 8 2 SACU FE02 Route 1 729 SACU L1 1 3X1 1 2 730 SACU L2 1 3X1 2 2 731 SACU L3 1 3X1 3 2 732 SACU FE01 3X1 4 2 Route 2 733 SACU L1 2 3X1 5 2 734 SACU L2 2 3X1 6 2 735 SACU L3 2 3X1 7 2 736 SACU FE02 3X1 8 2 RS485 communications cable...

Page 61: ...tation Vietnam Duc Long Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 55 Step 2 Connect a PE cable Figure 7 16 Connecting a PE cable Step 3 Connect three phase AC power cables ...

Page 62: ...ute to the FU01 switch and the corresponding FE cable to FE01 on the FE bar Connect the three phase AC power cable of the second route to the FU02 switch and the corresponding FE cable to FE02 on the FE bar Do not reversely connect the cables to FE01 and FE02 This document describes how to connect three phase AC power cables for the SACU that houses two PID modules For details about how to connect...

Page 63: ...Connect a single phase AC power cable Insulate the unused cable terminals and bind them in the cable holder Figure 7 19 Connecting a single phase AC power cable Step 6 Use firestop putty to seal the cable hole in the container End 7 7 Optional Connecting Cables to the UPS You have obtained the UPS and its auxiliary materials Check that the quantity and model of the following materials are correct ...

Page 64: ...age module ESM 01073568 3 Ground cable of the PSU 16 mm2 25030429 4 AC input output power cable 25030386 5 Signal cable between the UPS and the SACU 04080342 6 Power cable 04151856 7 Signal cable between the PSU and the ESM 04080441 8 Ground cable between the PSU and the ESM 10 mm2 04151857 9 Wall mounting kit 21153226 10 Fitting bag including terminals labels tubing and cable ties 02231YSG Proced...

Page 65: ... Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 59 Figure 7 20 Installing a mounting kit 2 Move the mounting kit from the rear of an ESM to the left side and install the ESM on the outer wall of the STS Figure 7 21 Installing an ESM 3 Install the connecting kit and combine the PSU with the ESM ...

Page 66: ...nam Duc Long Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 60 Figure 7 22 Installing a PSU 4 Install a connecting plate Figure 7 23 Installing a connecting plate Step 2 Connect a PE cable ...

Page 67: ... Gai Lai Installation Guide 7 Connecting Cables Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 61 Figure 7 24 Connecting a PE Cable Step 3 Connect the cables between the PSU and the ESM Figure 7 25 Connecting cables Step 4 Connect AC power cables ...

Page 68: ...wer cables Step 5 Move the bridgeware between 3XUPS1 terminals 3 4 to terminals 4 5 and the bridgeware between terminals 24 25 to terminals 25 26 The 3XUPS1 wiring terminal placed in the power distribution box in the MV room Step 6 Connect a signal cable for the SACU Insulate the unused cable terminals and bind them in the cable holder Figure 7 27 Connecting a signal cable for the SACU End ...

Page 69: ...able Connections No Acceptance criteria 1 All onsite components are installed correctly and securely 2 All switches are OFF 3 All cables are connected correctly and securely 4 All screws are tightened 5 Unused cable holes are covered with waterproof caps 6 The cable holes in use are sealed 7 The installation space is proper and the installation environment is clean and tidy 8 All doors of the STS ...

Page 70: ...s and materials The number of materials depends on site requirements Table A 1 Paint repair Paint Damage Tools and Materials Procedure Description Slight scratch steel base material not exposed Spray paint or paint brush required for repainting a small area fine sandpaper anhydrous alcohol cotton cloth and painting gun required for repainting a large area Steps 1 2 4 and 5 1 For the color of the f...

Page 71: ...maged provide the logo size and color number Seek help from the local advertisement coating supplier to formulate a repair solution based on the logo size color and damage Dent 1 If a dent is less than 100 mm2 in area and less than 3 mm in depth fill the dent with Poly Putty base and then perform the same operations as those for processing deep scratches 2 If a dent is greater than 100 mm2 in area...

Page 72: ...id top coating Select epoxy zinc rich primer or acrylic acid top coating with a color the same as the surface coating color of the equipment Step 4 Apply paint evenly to the damaged area based on the damage degree of the paint using a spray bottle brush or painting gun until all damage traces are invisible Ensure that the painting is thin even and smooth In the case that a container pattern has di...

Page 73: ...ation Table A 1 STS paint requirements Item Requirement Item Requirement Primer thickness 60 μm Primer type Epoxy zinc rich paint Intermediate coat thickness 120 μm Intermediate coat type Zinc rich paint Top coat thickness 60 μm Color number of the top coat Obtain the color number based on the color plate delivered with the product The following is a paint model list provided by Huawei The list ma...

Page 74: ... onsite conditions Reserve pressure relief channels for the ring main unit and add protective measures to prevent high temperature gas from burning nearby personnel during pressure relief The ladder should not block the low voltage and MV cables in and out The insulation ladder is recommended to be put in front of the door when maintenance The technical requirement The size of each cement column i...

Page 75: ...STS 6000K H1 Smart Transformer Station Vietnam Duc Long Gai Lai Installation Guide A FAQ Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 69 Figure A 4 Foundation dimensions ...

Page 76: ...s Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 70 B Acronyms and Abbreviations A ACB air circuit breaker C COM communication E EMC electromagnetic compatibility I ID identifier L LCD liquid crystal display LV low voltage M MV medium voltage P PEI peak efficiency index S STS smart transformer station ...

Page 77: ...STS 6000K H1 Smart Transformer Station Vietnam Duc Long Gai Lai Installation Guide B Acronyms and Abbreviations Issue 02 2020 02 21 Copyright Huawei Technologies Co Ltd 71 T TR transformer ...

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