CBMV6600-COM-01_V4

User manual for CBMV6600 transformer substation

Disclaimer

Information in this document is for general purposes only. While we make every effort to ensure accuracy, we make no guarantees and reserves the right to change details without notice. For the latest information, please contact us or visit our website.

CBMV-6600 MV Station

1. Manual Instruction

1.1 Applicable products

This manual is applicable to products of the CBMV-6600 MV Station (MV Transformer Container). Unless otherwise specified in the following text, "MV Station" is used instead of the above products.

1.2 Description

Briefly introduce the mechanical installation and electrical connection process.

1.3 Applicable personnel

This manual is applicable to personnel involved in the transportation, installation, and other operations of this product. Readers must meet at least the following requirements:

• Should have a certain level of knowledge in electronics, electrical wiring, and mechanical engineering, and be familiar with electrical and mechanical schematics.

• Should be familiar with the composition and working principle of energy storage systems.

• Familiar with the composition and working principles of MV Stations and their front-end and back-end equipment.

• Should have received professional training related to the installation and commissioning of electrical equipment.

• Should have emergency response capabilities in case of danger or unexpected situations during installation or commissioning operation.

• Should be familiar with the relevant standards and regulations of the country/region where the project is located, and must obtain an operation certificate for the relevant standards and regulations of the country/region where the project is located.

• Should be familiar with the content described in this manual.

1.4 Manual usage

Please read this manual carefully before transporting and installing this product. Operations can only be carried out after a clear understanding of the manual content. Please store this manual and other materials in the product components together to ensure that relevant personnel can access them at any time.

• Manual for Medium Voltage Ring Main Unit

• Manual for Medium Voltage Transformers

• Other accompanying manuals

1.5 Sign

In order to ensure the personal and property safety of users when installing this product, or to efficiently optimize the use of this product, the manual provides relevant information and highlights it with appropriate symbols.

The following is a list of symbols that may be used in this manual. Please read them carefully in order to better use this manual.

Danger

"Danger" means there is a high potential danger, if not avoided, it will lead to serious accidents such as casualties.

Warning

"Warning" means there is a moderate potential danger, if not avoided, it may lead to serious accidents such as personal injury or death.

Caution

"CAUTION" indicates a low potential danger, if not avoided, could result in moderate or minor personal injury.

Caution

"CAUTION" indicates a potential risk, if not avoided, could result in improper operation of the equipment or property damage.

Instructions

"Instructions" are additional information in the manual, emphasizing and supplementing the content, and may also provide optimal use of the product.

Please always pay attention to the danger warning signs on the enclosure, including:

2. System Introduction

All safety instructions in this manual must be strictly followed at all times. In order to avoid possible casualties and property losses during installation or operation, and to effectively extend the service life of the MVS, please be sure to read all safety instructions carefully.

2.1 General safety rules

2.2 Ground fault protection

2.3 Live measurement

2.4 Use of measuring equipment

In order to ensure that all electrical parameters meet the requirements during the electrical connection and commissioning of the MVS, relevant electrical measuring equipment shall be used.

2.5 Complete power-off operation

Only when it is ensured that all equipment in the MVS, especially the MVS, is completely uncharged, all operations can be performed on it.

• During the entire operation, it is necessary to ensure that the escape route is unobstructed.

• Ensure that the power-off equipment will not be accidentally re-powered. After the MVS is completely out of operation, be sure to wait at least 5 minutes before operating the MVS to ensure that the MVS is completely uncharged.

• Use a multimeter and electrical testing equipment to ensure that the inside of the equipment is completely uncharged.

• Make necessary grounding and short-circuit connections after confirming that there is no electricity.

• Use insulating cloth to insulate and cover the operating parts near potentially live parts.

2.6 Static electricity protection

2.7 Enclosure warning sign protection

The warning signs on the body of the MVS and the internal electrical equipment contain important information for the safe operation of the MVS and internal equipment. It is strictly forbidden to tear or damage it!

When carrying out on-site transportation, installation, overhaul, maintenance and other operations on the MVS, in order to prevent unrelated personnel from approaching and improper operation or accidents, please observe the following precautions:

• Place eye-catching warning signs at the front and rear of the MVS and at the switch to prevent accidents caused by wrong closing.

• Set up warning signs or safety tapes near the field operation area.

3. Product Description

3.1. External design of the cabinet

3.1.1 View

3.1.2 Equipment Rendering Diagram

3.1.3 Dimensions

3.2 Internal design of the cabin

Internal Layout Diagram

3.2.1 Internal equipment composition

3.2.2 Bottom cable entry hole

3.2.3 Medium voltage cable entry hole

Table 3-1 Cable entry hole at the bottom of the ring network cabinet

3.2.4 Internal Devices

The MV Station consists of a low-voltage room, a transformer room, a medium voltage room, and a distribution room.

3.2.5 Transformer room

The transformer room mainly contains a medium voltage transformer.

The transformer integrates accessories such as pressure relief valve, step switch, oil level gauge, pressure gauge, oil temperature gauge, oil filling valve and oil drain valve. The functions of each accessory are shown below.

Instructions

The picture is for reference only, the actual product shall prevail. The parameters noted are factory default values, which can be adjusted according to the actual situation.

Instructions

The picture is for reference only, the actual product shall prevail. The parameters noted are factory default values, which can be adjusted according to the actual situation.

3.2.6 Medium voltage cabinet

The medium voltage cabinet contains a medium voltage ring network cabinet.

The ring network cabinet consists of a circuit breaker cabinet, a load switch cabinet and a directly connected cable cabinet. Cabinet names vary with cabinet manufacturers, as shown in the following table.

The ring main unit is ABB's 36kV combination cabinet CCV. The appearance of the ring main unit is as follows:

3.2.7 Power distribution room

The distribution room consists of communication boxes, distribution boxes, UPS, etc. (Auxiliary transformer installed in low-voltage room)

Power distribution room

The internal layout of the power distribution room is shown below.

4. Identify And Store MVS

4.1 Identifying MVS

The MVS can be identified by the nameplate. The information contained in the nameplate includes: model, main technical parameters, certification body identification and origin, etc.

4.2 Check the integrity of transportation

Before leaving the factory, the staff of manufacturer has conducted a comprehensive and careful inspection of the MVS, and packaged it firmly. Nonetheless, it is possible that the device may be bumped or even damaged during transportation.

After receiving the box, it is first necessary to check the integrity and integrity of the transportation. At least the following items shall be carefully checked: check whether all shipped components are complete according to the packing list.

• Confirm that the received machine is consistent with the ordered model.

• Carefully check the MVS and internal equipment to see if there is any damage during transportation.

Warning

Only complete and undamaged MVS can be installed and commissioned! Before starting the installation make sure that:

• The MVS itself is intact and without any damage.

• All equipment in the MVS is in good condition without any damage.

4.3 Storage

After the successful completion of the delivery work, if it is not installed immediately, please store the MVS properly as described in this section.

• In order to prevent condensation in the MVS or the bottom of the box from being soaked by rainwater in rainy season, the MVS shall be stored in an indoor environment, such as a large warehouse or workshop.

• If it must be stored outdoors due to site conditions, the MVS base must be raised. The specific lifting height shall be reasonably determined according to site geological and meteorological conditions.

• Storage environment temperature: - 35 ° C ~ + 70 ° C; Relative humidity of storage environment: 0 ~ 95%, no condensation. When the ambient temperature is too low, provide heating for the internal equipment of the MVS. The MVS shall be stored on a dry, flat, solid ground with sufficient bearing capacity and no vegetation cover. The storage ground must be flat and free of water, unevenness or undulation.

• When storing, ensure that the doors of the MVS and the internal equipment cabinets are locked, and the cabinet doors of the MVS and equipment inside the cabinet are locked tightly.

• Effective measures must be taken to prevent rain, sand and dust from entering the MVS. At least the air inlet and outlet of the MVS must be effectively protected.

• During storage, lock the MVS and internal equipment door locks. Take appropriate protective measures (at least the air inlet and outlet should be sealed) to prevent rain and dust from entering the MVS.

• When selecting the temporary storage platform, the supporting feet of the MVS shall be taken into account. Check the MVS and internal equipment regularly (at least every half month).

4.4 Conditions of transportation

All kinds of equipment in the MVS have been installed and fixed in the MVS before leaving the factory, and the MVS can be hoisted and transported as a whole during transportation.

The MVS is transported to the site of the power station by the freight company, and the site management personnel of the power station will be notified in advance to negotiate and arrange delivery and unloading. After delivery, the MVS is moved to the final position, which needs to be operated by the engineering construction personnel of the power station.

Warning

During the whole process of loading, transportation and unloading, the operation safety regulations of the country/region where the project is located must be observed!

• Any machines and tools used in the MVS and operation shall be maintained.

• All personnel engaged in loading, unloading and bolting shall receive corresponding training, especially safety training

Instructions

During the whole process of loading, transportation and unloading, it is necessary to keep in mind the dimensions and weight parameters of the MVS.

Transport and mobile MVS should at least meet the following conditions:

• Each cabinet door of the MVS is locked tightly.

• According to the site conditions, select the appropriate means of transport, usually a crane or a forklift. The selected means of transport must have sufficient load-bearing capacity.

• Additional traction devices may be required if required to move on slopes etc.

• Remove all obstacles that exist or may exist during the movement, such as trees, cables, etc.

• The MVS should be transported and moved under favorable weather conditions as far as possible.

• Before transportation, be sure to use a flexible rope to fix the lifting ring on the top of the MVS to the platform base, and then fix the four fixing points on the bottom of the platform to the fixing points of the transport vehicle.

• In addition, when the MVS is grounded, it should also be ensured that:

• The ground of the MVS should be solid and flat, well drained, free from obstacles and protrusions;

• On site, the MVS shall be supported by only four bottom corner pieces.

4.5 Lifting and transporting

4.5.1 Precautions for lifting

Warning

• During the whole process of hoisting the MVS, it is necessary to strictly follow the safety operation rules of the crane.

• It is strictly forbidden to stand within the range of 5m to 10m in the operating area. In particular, it is strictly forbidden to stand under the hoisting arm and under the hoisted or moving machine to avoid casualties.

• In case of bad weather conditions, such as heavy rain, heavy fog, strong wind, etc., the lifting work should be stopped.

When lifting a MVS, at least the following requirements must be met:

• Safety on site must be ensured when lifting.

• When carrying out lifting and installation operations, there should be a professional on-site commanding the whole process.

• The strength of the slings used should take into account the weight of the MVS.

• The crane shall have sufficient arm length and rotation radius.

• Ensure that all sling connections are safe and secure.

• The length of the sling can be adjusted appropriately according to the actual requirements of the site.

• Smoothly transport the MVS.

• Transport the MVS by connecting the four top corner fittings.

• Take all necessary auxiliary measures to ensure the safe and smooth lifting of the MVS.

• All cabinet doors should be closed and locked.

• It is recommended to lift from left to right or right to left to ensure smooth lifting.

The figure below shows the schematic diagram of crane operation in the lifting process of the MVS.

Figure 5-1 Schematic diagram of lifting

4.5.2 Lifting

In the process of hoisting the MVS, each operation link should be carried out according to the following requirements:

• The MVS shall be lifted vertically without dragging on the ground or on the top of the lower box, and the MVS shall not be dragged or pushed on any surface.

• Keep it stable, and the diagonal of the cabinet should be inclined ≤ 5°.

• After the MVS is moved 50mm away from the support surface, it shall be suspended, and the connection between the lifting equipment and the MVS shall be checked. The lifting can be carried out only after the connection is confirmed to be firm.

• The lifting equipment shall be lifted and put down gently. The cabinet shall fall slowly and steadily to avoid impact on the internal equipment.

• When the cabinet is in contact with the base, remove the hoisting steel cable after the base is evenly stressed.

• The installation location should be firm, horizontal and well drained. The MVS is supported by four bottom fittings on the ground.

• After placing the MVS on the base at a constant speed, remove the fixing rope in time.

• After the first hoisted container is fixed, the subsequent container hoisting can be carried out.

The MVS should be lifted by four top corner pieces, as shown in the figure below

Figure 5-2 Top lifting method

4.5.3 Fastening of connectors

The suspended ceiling of the MVS can be carried out by using slings with hooks or U-hooks. The lifting device shall be properly connected with the MVS cabinet.

Warning

• When lifting and transporting, all safety operation standards and regulations of the country/region where the project is located must be strictly observed.

• manufacturer shall not be liable for any personal injury or property loss caused by violation of relevant requirements or other safety specifications.

5. Mechanical Installation

Warning

During the whole process of mechanical installation, the relevant standards and requirements of the project location must be strictly followed.

5.1 Foundation Construction

5.1.1 Selection of installation site

When choosing an installation site, please follow at least the following principles:

• The climate environment and geological conditions (such as stress wave emission, groundwater level) and other characteristics of the MVS installation site should be fully considered.

• The surrounding environment is dry and well ventilated, away from flammable and explosive areas.

• The soil at the installation site needs to have a certain degree of compaction. If the soil is loose, please take measures to ensure the foundation is stable.

• It should be kept away from places that generate dust, oily smoke, harmful gases, and produce or store corrosive, flammable, and explosive materials.

• The installation location cannot be in a low-lying area and the site level should be higher than the historically high water level in the area.

• The soil is in good condition, the ground is firm, and there must be no bad geological conditions such as rubber soil and weak soil layers. Do not choose the ground that is easy to accumulate water and sink.

• A well-ventilated place.

• Choose an open location to ensure that there are no obstacles within 10m from the equipment.

• Keep a distance of at least 50m from residential areas to avoid noise pollution.

5.1.2 Recommended foundation scheme

At least the following requirements shall be met when constructing the foundation:

Warning

The specific foundation scheme is determined by the on-site investigation of the local construction team. The following is for reference only, and should not be taken as the standard. All hoisting and foundation construction during the installation of the MV Station (MV Transformer Container) must be designed and operated by holding relevant certificates or professionals.

• The bottom of the foundation pit where the foundation is built must be compacted and filled.

• The foundation should be sufficient to provide effective load-bearing support for the MVS.

• Elevate the MVS to prevent rainwater from eroding the MVS base and interior. It is recommended that the foundation be about 100mm higher than the horizontal ground of the installation site.

• Build cement foundations of sufficient cross-sectional area and height. The foundation height is determined by the construction party according to the site geology.

• Cable routing should be considered when constructing foundations.

The overall foundation construction effect is shown in the figure below.

5.1.3  Fixed MVS (optional)

Introduction

As shown in Figure below(“A”), there are L-shaped angle steel mounting holes reserved at the bottom of the MVS.

Preparation of installation tools

When installing L-shaped angle steel, the tools that may be used are as follows:

L-shaped steel appearance drawing

First, tighten M16*35 screws at A, and then M16*50 expansion bolts at B, pass through from bottom to top, and add spring washers, flat washers and nuts to fix them above the angle steel.

Other protective measures

Notice

Drainage systems should be designed at the installation site to prevent the MVS from being immersed in water during heavy rains.

Notice

Do not plant any trees near the MVS installation site to avoid MVS damage due to leaves or stems.

5.2 Installation check

• Bolts and nuts are tightened.

• The cabinet body is in good contact with the base below and bears even force.

• All doors open and close smoothly.

5.3 Installation space requirements

In the field, the MVS needs to be used together with the inverter, and the distance between the inverter and the MVS is as follows.

Unit：mm.

*The distances shown above are minimum requirements.

5.4 Remove the film and box converter cover

In the process of transportation, the heat exchanger and air conditioning in the MVS are equipped with film and PVC clip mesh cloth protective covers for packaging, as shown in Figure A and B below respectively.

Before the MVS is officially put into operation, be sure to remove the above film and box PVC clip mesh cloth protective cover.

6. Electrical Connections

6.1 Wiring schematic diagram

The electrical schematic diagram is as follows:

Figure 6-1 Wiring Schematic Diagram

6.2 Electrical connection

Before leaving the factory, the electrical connections between the equipment inside the MVS have been completed. On site, wiring between external equipment and MVS is required, including grounding, low-voltage side wiring, medium-voltage side wiring, communication and power distribution wiring.

6.2.1 Grounding

Introduction

Grounding includes equipotential connection inside the MVS and grounding of external grounding points.

Equipotential connection inside the MVS

Before leaving the factory, the equipotential connection between all the equipment in the MVS has been completed, and they are uniformly summarized to the grounding copper bar.  

External ground

In order to facilitate grounding, there are two grounding points outside the MVS cabinet.

Ground point dimensions, as shown below.

Measure the conductivity between the equipment grounding terminal and the total equipotential bonding copper bar to ensure the effectiveness of the internal grounding connection. The external grounding point of the MVS shall be reliably grounded through the following two methods.

• Use 50mm2~ 95mm2 grounding cables to reliably connect the external grounding point of the MVS to the grounding point of the photovoltaic system. After completion, use M12 bolts to tighten.

• Weld the grounding flat bar to the external grounding point of the MVS. Finally, securely connect the ground flat bar to the photovoltaic system ground point. After completion, it is necessary to do anti-corrosion treatment on the weld part.

It is recommended to reliably connect two grounding points outside the MVS to the grounding point of the photovoltaic system.

Instructions

The MVS needs to be grounded reliably. After completion, the following operations are required:

Measure the conductivity between the equipment grounding terminal and the total equipotential bonding copper bar to ensure the effectiveness of the internal grounding connection. Please perform external grounding according to the site conditions and the instructions of the actual staff.

After the ground connection is completed, the ground resistance must be measured, and the resistance value should not be greater than 4Ω.

Instructions

The specific insulation resistance value should follow local standards and regulations.

Warning

During the ground connection process, if you have any questions, please contact the relevant staff in time. If the installation is not carried out in accordance with the installation specifications, or if it is installed or modified without permission, it may cause safety accidents or equipment damage. manufacturer does not assume any responsibility for any loss caused thereby.

Wiring copper bar

Step 1 Make sure that the output circuit breakers of each inverter at the previous stage are in the OFF state.

Step 2 Make sure that both the air circuit breaker and the molded case circuit breaker are disconnected.

Step 3 Thread the cable through the bottom inlet hole.

Step 4 Peel off the insulating skin at the end of the cable. The length of the peeling off of the insulating skin at the end of the cable shall be the depth of the wiring copper nose crimping hole plus about 5mm.

Step 5 Crimp the wiriing copper nose.Equipped with appropriate wiring copper nose according to the selected cable size.

1. Place the exposed aluminum core of the stripped wire head into the wire pressing hole of the copper nose.

2. Use a terminal crimping machine to crimp the wiring copper nose. The number of crimps should be more than two.

Step 6 Install the heat shrink tubing.

1. Choose a heat-shrinkable tube that matches the size of the cable, and the length should be about 2cm longer than the wiring copper-nosed crimping pipe.

2. Put the heat-shrinkable tube on the wiring copper nose to completely cover the crimping hole of the wiring copper nose.

3. Use a hot hair dryer to shrink the heat shrink tube.

Step 7 Wiring.

1. Select the screws that match the wiring copper nose.

2. Crimp the wiring copper nose to the DC wiring copper bar.

3. When using copper wire to connect, the wiring sequence and components are as follows.

4. Use a screwdriver or wrench to tighten. If M12x40 bolts are used, the tightening torque is 60~70N.m.

Instructions

If a multi-core cable is used, it is recommended to add a cable protection finger sleeve at the bifurcation to prevent the outer insulation from cracking.

When using aluminum wire for connection, the wiring sequence and components are as follows.

Warning

• Incorrect wiring sequence may cause fire. Please pay attention to the connection sequence of the wiring parts.

• When connecting, make sure that the connector is tight. Inadequate connections or oxidation of the contact surfaces can also cause excessive heat, which may result in fire.

Notice

• The length of the wiring screws should be appropriate, and it is enough to expose the mounting holes of the copper bars slightly. Too long may affect the insulation performance or even short-circuit.

• Check whether there is a part of the heat-shrinkable sleeve clamped at the connection between the terminal and the copper bar. If it is clamped, it should be removed immediately, otherwise it may cause poor contact or even heat damage.

• Make sure that the terminal and the copper bar are in good and tight connection and have good contact.

Step 8 Confirm whether the wiring terminal is fastened in place.

-- End the wiring and cover the low-voltage cabinet cover.

Medium voltage wiring

The connection terminals of the MVS and external medium voltage equipment are located inside the ring network cabinet.

On site, refer to the manual of the ring network cabinet for wiring.

Notice

During the wiring process, be sure to pay attention to the phase sequence of the wiring terminals.

6.2.3 Communication wiring

Before leaving the factory, the communication terminals of all equipment inside the MVS have been connected to the communication box. The operating data of these devices are uploaded to the background monitoring system through the communication box.      

6.2.4 Auxiliary power supply wiring

There are spare sockets reserved inside the power distribution cabinet. On site, perform wiring according to port identification and wiring drawings.

6.3 Check after wiring is completed

7. Power Transmission Operation

Notice

The operations described in this subsection should only be performed by professionals and in accordance with local standards/regulations.

7.1 Inspection before power transmission

7.1.1  Cabinet inspection

7.1.2 Medium voltage ring network cabinet

7.1.3 Medium voltage transformer

Remove locking device

Figure 7-1 Removing the Pressure Relief Valve Locking Device

Adjust the no-load step switch

The transformer output voltage is adjusted by operating the step switch. When operating the step switch, please ensure that the transformer is in a non-excited state, that is, there is no electricity on the high and low voltage sides of the transformer. When the voltage on the low-voltage side remains unchanged, the output voltage on the high-voltage side in different gears is:

Figure 7-2 Adjusting the Voltage Ratio by Step Switching

Taking gear 1 as an example, the steps for adjusting the voltage ratio are shown in the figure below

Low voltage cabinet

7.2 Power transmission steps

Notice

After running for 24 hours under no-load state and ensuring that there is no abnormality, the MVS can be run with load.

Handover test, system power on and other operations must be carried out by local qualified electricians according to national / local standards.

8. Troubleshooting

This chapter only lists common troubleshooting methods on the transformer side. For more details, please refer to the relevant transformer and ring network cabinet user manuals.

9. Routine Maintenance

Due to the influence of ambient temperature, humidity, dust and vibration, the components inside the MVS will age and wear out, which will lead to potential failures inside the MVS. Therefore, it is necessary to carry out routine and regular maintenance on the MVS to ensure its normal operation and service life.

All measures and methods that help the MVS to be in good working condition belong to the scope of maintenance work.

9.1 Safety Precautions

In order to ensure the safety of operators when maintaining or overhauling the MVS, be sure to abide by the following five safety rules :

• Professionals ensure that MVS cannot be re-energized accidentally .

• Use electrical inspection equipment to ensure that the inside of the MVS is completely de-energized.

• Have the necessary ground and short-circuit connections made by professionals.

• For possible live parts near the operating part, use insulating cloth to cover them.

• Check whether the escape route is blocked.

9.2 Maintenance

9.2.1 Overview

The MVS has IP54 protection grade and is suitable for outdoor use. However, harsh environment or long-term operation will cause the aging of the MVS or damage to the internal equipment. Regular maintenance and inspection of the MVS, and replacement of aging and damaged components will effectively prolong its service life and improve the performance of internal equipment.

Instructions

Irregular inspection is necessary, especially when the overall performance of the system is poor.

9.2.2 Maintenance period

In order to ensure the good operation of the equipment in the MVS, the MVS should be maintained regularly.

The maintenance intervals given in this section are reference values. The actual maintenance period should be reasonably determined based on the actual environmental conditions of the project site. If the operating environment of the MVS is relatively harsh, such as in a desert area, the corresponding maintenance period should be shortened. In particular, internal and external cleaning, anti-corrosion and anti-rust work, etc., should be more frequent.

If the MVS is installed in a desert area, it is recommended that the inside and outside of the MVS should be carefully inspected and thoroughly cleaned after each sandstorm.

9.3 Maintenance items

Routine inspection and maintenance must comply with the relevant regulations of the power company. Inspection, maintenance and repair can only be performed by trained personnel who are familiar with the equipment. Personnel must be certified and comply with safety regulations issued by the power company.

The inspection frequency is the recommended frequency, and the inspection personnel will be arranged by the customer.

9.4 Transformer oil drain operation

Oil drain valve

The oil drain valve is located at the bottom of the transformer.

9.4.1 Preparation of installation tools

Tools that may be used:

Instructions

*The capacity of the oil tank must be greater than Nx200L, and N represents the amount of oil to be released.

Operation

Step 1 Remove the oil drain valve cover.

Step 2 Fix the oil drain hose connector. One end of the steel hose is connected to the oil drain hose connector, and the other end is connected to the oil tank.

Step 3 Open the oil drain valve, and the transformer oil slowly flows from the transformer into the oil tank.

Step 4 When no oil flows out of the transformer, stop draining the oil.

Step 5 Close the oil drain valve and remove the oil drain hose connector and hose.

Step 6 Reinstall the cover of the oil drain valve.  - - Finish

9.5 Paint repair measures

Check the appearance of the cabinet for damage:

Case 1: Surface dirt caused by water stains and dust can be cleaned

Case 2: The surface is dirty & the topcoat is damaged, and the surface traces cannot be cleaned.

Case 3: The primer is damaged and the substrate is exposed.

Operation steps for maintenance in case 1:

Material:

• rag

• water

• Alcohol or other non-corrosive cleaner

Operation steps for maintenance in case 2:

Material:

• Sandpaper

• Rag

• Water

• Alcohol

• Brush

• The color number is RAL7035 paint

Operation steps for maintenance in case 3:

Material:

• Sandpaper

• Rag

• Water

• Alcohol

• Zinc rich primer

• Brush

• The color number is RAL7035 paint

Instructions

It is necessary to check whether the protective paint sprayed on the shell of the MVS has peeled off, peeled paint, etc. If found, please repair it in time. The entire exterior of the MVS should be repainted with special protective paint every 5 years.

9.6 Daily operation and maintenance

During daily operation, it is necessary to ensure that the doors of the MVS and the internal equipment cabinets are closed and locked, and the keys have been pulled out and handed over to a special person for safekeeping. In order to avoid accidents caused by unauthorized personnel entering, or the internal equipment is exposed to rain, animals, etc. At the same time, the MVS and internal equipment should be regularly inspected and maintained to ensure long-term reliable operation of the MVS.

In daily operation and maintenance, please pay attention to the following:

• The nameplate is affixed to the MVS. It also contains important parameter information of the equipment. Protect the nameplate during all operations.

• Wear appropriate personal protective equipment, such as safety glasses, safety shoes and safety gloves, during all operations.

• It is recommended to take all necessary auxiliary measures to ensure personal and equipment safety.

10. Appendix

10.1 Comparison table of rated current and short-circuit breaking current

Table 10-1 Comparison table of rated current and short-circuit breaking current

10.2 Tightening torques

In order to prevent the connection copper nose from being loosened by   force, causing poor contact, or increasing the contact resistance and causing heat or even fire, it should be ensured that the following torque requirements should be met when tightening the screws of the connection copper nose:

In order to reduce the stress on the wiring copper nose, the cable shall be fixed at an appropriate position.

10.3 Contact information

If you have any questions about this product, please contact us. In order to provide you with faster and better after-sales service, we need your assistance to provide the following information:

• Equipment model

• Equipment serial number

• Fault code / name

• Simple description of fault phenomenon

10.4. Other precautions

10.4.1 Manual storage

The product manual is an integral part of the product. The manual contains important information on transport, installation, inspection, maintenance, etc. of the MVS. Please read this manual carefully before transporting, installing, overhauling and maintaining the MVS.

• Please strictly follow the description in this manual to transport, install, overhaul and maintain the MVS. Otherwise, equipment damage, personal injury or property damage may be caused.

• This manual should be kept in a safe place so that it is readily available to transport, installation and operating personnel.

10.4.2 Product Scrap

When the MVS as a whole or the individual equipment inside needs to be discarded, it cannot be treated as general waste. Some components of the internal machine can be recycled and reused, and at the same time, some components will pollute the environment. Please contact the local authorized professional recycling organization to properly dispose of the product and internal components.

10.4.3 Manual Instructions