Midea M1-T5K User Manual
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Midea M1-T5K User Manual

Midea M1-T5K User Manual

Hybrid inverter
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HYBRID INVERTER
USER MANUAL
MODEL NUMBER:
M1-T(5-10)K
Warning notices: Before using this product, please read this manual carefully and keep it for future reference.
The design and specifications are subject to change without prior notice for product improvement.
Consult with your dealer or manufacturer for details.
The diagram above is just for reference. Please take the appearance of the actual product as the standard.

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  • Page 1 HYBRID INVERTER USER MANUAL MODEL NUMBER: M1-T(5-10)K Warning notices: Before using this product, please read this manual carefully and keep it for future reference. The design and specifications are subject to change without prior notice for product improvement. Consult with your dealer or manufacturer for details. The diagram above is just for reference.

  • Page 2: Table Of Contents

    THANK YOU LETTER Thank you for choosing Midea! Before using your new Midea product, please read this manual thoroughly to ensure that you know how to operate the features and functions that your new appliance o ers in a safe way.

  • Page 3: About This Manual

    1. ABOUT THIS MANUAL This manual contains important safety information that must be observed during installation and maintenance of the device. Carefully read this manual before use and retain it for future reference! This manual must be treated as an integral component of the device. The manual must be kept in close proximity to the device, including when it is handed over to another user or moved to a di erent location.

  • Page 4: Basic Safety Information

    2. BASIC SAFETY INFORMATION NOTE If you have any questions or problems after reading the following information, please contact your installer. This chapter details the safety information pertaining to the installation and operation of the device. 2.1 Safety information Read and understand the instructions within this manual and familiarize yourself with the relevant safety symbols in this chapter before beginning with the installation of the device and eliminating any faults.
  • Page 5 2.1.3 Transport requirements The factory packaging is specifically designed to prevent transport damage, i.e. violent shocks, moisture and vibrations. However, the device must not be installed if it is visibly damaged. In this case, notify the responsible transport company immediately. 2.1.4 Labelling on the device The labels must NOT be concealed by items and foreign objects (rags, boxes, devices, etc.);...
  • Page 6 Electric shock • Contact with the electrical grid or the device's terminals may result in an electric shock or fire! • Do not touch the terminal or the conductor which is connected to the electrical grid. • Follow all instructions and observe all safety documents that refer to the grid connection.
  • Page 7 WARNING Damage due to overvoltage • Ensure that the input voltage does not exceed the maximum permissible voltage. Overvoltage may cause long-term damage to the inverter, as well as other damage that is not covered by the warranty! Several symbols pertaining to safety can be found on the inverter. Please read and understand the content of these symbols before starting the installation.

  • Page 8: Product Overview

    3. PRODUCT OVERVIEW 3.1 Product Introduction The Hybrid Inverter is a three-phase grid-tied PV string inverter with battery interfaces that converts the DC power generated by PV strings into AC power and feeds the power into the power grid. With the integrated energy manage- ment function, it can control and optimize the energy flow so as to maximize the self-consumption of PV system.
  • Page 9 Dimensions The following figure shows the dimensions of the inverter. 247mm 196mm 102.2mm 521mm 3.3 LED indicators INDICATOR COLOR STATUS EXPLANATION Green Steady on PV power available PV power not Yellow Steady on available/ too low Steady on Fault System is power-o Green Steady on Inverter is operating...
  • Page 10 3.4 PV System 3.4.1 Introduction The Hybrid Inverter can be used as PV grid-connected inverters. Hybrid inverter ATTENTION • Please be sure that the potential voltage between N and PE line is not higher than 30V, otherwise, inverter will stop generating power. •...
  • Page 11 Working mode Description • In Standby or Operating mode, the Hybrid Inverter enters Shutdown mode after detecting a fault or shutdown command. Shutdown • In Shutdown mode, the Hybrid Inverter enters Standby mode after detecting a startup command or that the fault is rectified. 3.5 PV Energy Storage System 3.5.1 Introduction By directly connecting a battery module to the inverter, the conventional PV...
  • Page 12 3.5.2 Declaration for Back-Up Function The following statement involves general policies about the inverters described in this document. 1 For hybrid inverters, the electrical installation typically includes connection of the inverter to both PV modules and batteries. If there is no available power from batteries or PV modules in backup mode, the backup power supply will be auto- matically terminated.
  • Page 13 NOTE • The data of the compatibility for backup of Hybrid Inverter are based on the test with batteries (-20 ~ 55 ℃, 5~100% SOC). For the actual application, please refer to the maximum output capacity of the battery used. For those loads that not covered in this document, please contact your installer to make sure the compatibility of the specific loads under o -grid scenario.

  • Page 14: Function Description

    4. FUNCTION DESCRIPTION 4.1 Protection Several protective functions are integrated in the inverter, including short circuit protection,grounding insulation resistance surveillance, residual current protec- tion, anti-islanding protection, DC overvoltage / over-current protection, etc. 4.2 Energy Conversion and Management The inverter converts the DC power from the PV array or the battery to the AC power, in conformity with the grid requirements.
  • Page 15 4.2.5 Load Control The inverter has an integrated multiple-function dry-contact (DO relay), which can be used for load control via a contactor. 4.3 Battery Management The maximum allowable charge/discharge current is limited to the smaller value among the following: • Temperature; •...
  • Page 16 4.4 Feed-in limitation function The function of the feed-in limitation is to control the amount of power injected in the grid by the plant. In some situations，this function is also called as Export limitation or Zero export. The feed-in limitation function requires a power measurement device must be installed.

  • Page 17: Storage 1

    5. STORAGE The following requirements should be met if the M1 series inverter is not put into use directly: • Do not unpack the M1 series inverter. • Keep the storage temperature at –40°C to +70°C and the humidity at 5%– 95% RH. •...

  • Page 18: Installation 1

    6. INSTALLATION 6.1 Installation information DANGER Fire hazard • Do not install the inverter on flammable material. • Do not install the inverter in an area in which flammable or explosive material is stored. CAUTION Burning hazard • Do NOT install the inverter in places where it can be accidentally touched. The housing and heat sink may become very hot while the inverter is being operated.
  • Page 19 Pictures Description Quantity Hybrid inverter Smart meter D4 Disassembly tool Photovoltaic connector - Straight female Photovoltaic connector - Straight male Communication connector BACK-UP AC connector PE terminal Current transformer NCTK24 100A/5A Wireless module ON-GRID AC connector...
  • Page 20 Pictures Description Quantity Marking-off template Mounting bracket Smart meter RS485 cable Expansion bolt SEM screws M4*10 Quick guide Packing list User manual Delivery inspection report Quality certificate Warranty card...
  • Page 21 6.3 Tools Tool Model Function Hammer drill Recommended Used to drill holes in the wall drill diameter: Screwdriver Wiring Used to remove and install Phillips screwdriver the screws of the AC termina Used to remove the PV Removal tool battery terminal Wire stripper Used to strip the wire Used to turn the screw to...

  • Page 22: Mounting Requirements

    Tool Model Function Safety goggles For the installer Anti-dust respiratory For the installer mask 6.4 Installation Requirement 6.4.1 Environment Requirements Basic requirements • The Hybrid Inverter is protected to IP65 and can be installed indoors or outdoors. • Do not install the Hybrid Inverter in a place where personnel are easy to come into contact with its enclosure and heat sinks, because these parts are extremely hot during operation.
  • Page 23 6.4.2 Space Requirements Angle Requirements The inverter can be wall-mounted or pole-mounted. The installation angle requirements are as follows: • Install the inverter vertically or at a maximum back tilt of 15 degrees to facilitate heat dissipation. • Do not install the inverter at forward tilted, excessive back tilted, side tilted,horizontal, or upside down positions.
  • Page 24 ATTENTION Mechanical damage • In order to prevent injuries and damage to the device, ensure that the inverter is kept balanced while it is being moved - it is very heavy. • Do not place the inverter on its connections, as these are not designed to bear its weight.

  • Page 25: Electrical Connection

    7. ELECTRICAL CONNECTION 7.1 Safety instructions This topic describes the electrical connections of the inverter. Read this section thoroughly and carefully before connecting the cables. DANGER Electrical voltage at the DC connections. • Ensure that the DC switch is OFF before establishing the electrical connection. The reason is that the electrical charge remains in the capacitor after the DC switch has been switched o .
  • Page 26 The DVC (decisive voltage classification) is the circuit voltage which constantly occurs between two arbitrary live parts during proper use in a worst-case scenario: Description of limits for DVC Operating voltage limit (V) AC voltage (RMS) AC voltage(PK) DC voltage (AVG) 25(16) 35.4(22.6) 60(35)
  • Page 27 House connec�on box Smart Meter Grid ① WEB&APP Distribu�on box DCDC Router BAT+ Unit BAT- COM0 ⑤ COM1 ③ ② ④ ② Ba�ery COM0 BACKUP GRID COM1 Hybrid LOADS BACKUP without Backup Ba�ery inverter LOADS Wireless Wireless Module PV Array PV Array COM0 BAT+ BAT-...
  • Page 28 1.Remove the insulation of the cable. For outside use, cables of ≥ 4mm are recommended for Grounding). L2=L1+(2-3)mm 2.Crimp the cable to the ring terminal: L3《2mm L4《1.5mm 3.Install the crimped ring terminal and the washer with M4 screws and tighten these with a torque of 1.5 Nm using an Allen key: 7.4 AC Output Connection The AC power cables are used to connect the inverter to the critical loads...
  • Page 29 Please follow below steps to install the AC connector. 1) Select the suitable cable in accordance with above diagram. Remove the insulating layer of the AC output cable using a wire stripper and in accordance with the following illustration. A = 30~50 mm B = 3~5 mm 2) Disassemble the connector in accordance with the following illustration.
  • Page 30 4) Assemble the connector housing and screw the cable gland tight. 5) Connect the AC connector to the AC connector of the inverter by turning it clockwise until it locks into place. NOTE • Remove the AC connector by turning it anticlockwise. •...
  • Page 31 1. Remove the crimp contacts from the positive and negative connections. 2. Remove the insulation of the cables: L2=8-10mm L2=8-10mm Note: L2 is 2 to 3mm longer than L1 ① Positive DC cable ② Negative DC cable 3. Insert the positive and negative DC cables into the corresponding cable glands. 4.
  • Page 32 6. Re-screw the cable glands to the connector housing. MC4 Wrench 7. Insert the positive and negative connectors into the corresponding DC input terminals of the inverter until you hear a “clicking” sound. ① ① ① Locking NOTE • Insert the protective caps into the unused DC connections. Removing the connectors.
  • Page 33 7.6 Smart Meter Connection The integrated energy management functions integrated of the inverter require to measure the power flow at the point of grid interconnection. Please refer to below table for the PIN assignments for the RS485 connection between the inverter and the energy meter. Inverter COM Port Pin Function Meter Pin...
  • Page 34 Energy meter with CT connection Energy meter pins pin9 pin8...
  • Page 35 NOTE • The arrows on the current transformers direct to the grid. P2 Grid • Up to 100 A measurement • Accuracy class and load rating(VA/ ):0.5 class • Rated operating voltage:AC 0.66KV(Equivalent to 0.69KV GB156-2003) • Rated frequency: 50-60Hz NCTK24 100A/5A •...
  • Page 36 NOTE • The inverter connected to the meter is a power generation device, and the function of the meter connected to the traditional load (electrical device) is opposite. Therefore, for our product, when the power is output to the grid, the electricity meter will show a positive value, and when the power is purchased from the grid, it will show a negative value;...

  • Page 37: Installing The Cable

    Definition Function DO1- Dry contacts of load control DO1+ Dry contacts of load control RS485A1 Communicate with smart meters RS485B1 RS485A2 Communicate with heat pump RS485B2 RS485A3 Communicate with EMS RS485B3 Remote shutdown signal 12V power supply Installing the cable D:5mm D:4.5-6.5mm 12-14mm...

  • Page 38: Commissioning 3

    8. COMMISSIONING 8.1 Safety test before commissioning ATTENTION Check the voltage range • Ensure that the DC and AC voltages are within the permissible range of the inverter. 8.2 Check before power-on Item Acceptance Criterion Inverter installation The Inverter is installed correctly and securely. The Energy Storage Unit is installed correctly Battery installation and securely.
  • Page 39 8.3 System power-on 1. If a battery is connected, turn on the battery switch. 2. Turn on the AC switch between the inverter and the power grid. 3. Turn on the DC switch (if any) between the PV string and the inverter. 4.
  • Page 40 8.4 APP commissioning Download and install the app. Search goMSolar and MSmartHome in the Apple or Google Play store, or use the following QR codes: • MSmartHome (for end users): • goMSolar (for installers): NOTE Please refer to the App user manual for detailed operations. Scan the QR code to download the APP user manual.

  • Page 41: Maintenance 4

    9.MAINTENANCE 9.1 System power-o If the inverter needs to be shut down for electrical inspection, please follow the following steps: 1. Turn o the AC switch between the inverter and the power grid. 2. Turn o the DC switch at the bottom of the inverter. 3.
  • Page 42 9.3.1 Earth fault alarm This inverter is compliant with IEC 62109-2 Clause 13.9 for earth fault protection. If an earth fault alarm occurs, the error is displayed on the LED indicators, the red light illuminate. 9.3.2 Error list This section describes the potential errors for this product. Please read carefully for the following tips when doing the troubleshooting: Alarm severities are defined as follows Major: The inverter is faulty.

  • Page 43: Troubleshooting

    Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting 1. Power grid outage 1. The alarm is cleared automatically after occurs. the power grid recovers. 1005 Grid loss Major 2.The AC circuit is 2. Check whether the AC circuit is disconnected or the disconnected or the AC switch is o .
  • Page 44 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the Power grid exception: power grid voltage is within the Grid over...
  • Page 45 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting 1. If the alarm occurs occasionally, the power grid may be abnormal temporarily. The inverter automatically recovers after detecting that the power grid becomes normal. 2. If the alarm persists, check whether the 1.
  • Page 46 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting Check whether the battery is reversely connected to the power module. If so, Battery reversal Battery reversal Major 2008 turn o the DC switch and correct connection connection the battery polarity. 1.

  • Page 47: Handling The Inverter

    10.HANDLING THE INVERTER 10.1 Removing the inverter NOTICE Before removing the inverter, power o the AC and DC (batteries). Perform the following operations to remove the inverter: 1. Disconnect all cables from the inverter, including RS485 communications cables, DC input power cables, AC output power cables, and PGND cables. 2.

  • Page 48: Technical Data

    11.TECHNICAL DATA M1-T5K M1-T6K M1-T8K M1-T10K Model Input (PV) Recommended max. PV power (Wp) 7500 9000 12000 15000 Max. input voltage (Vdc) 1000 MPPT operating voltage range (Vdc) 160~800 Start -up voltage(Vdc) Nominal input voltage(Vdc) Max. input current per MPPT(A) Max.
  • Page 49 AC short-circuit protection AC overvoltage protection LVRT Energy Management Black start Back-up power General Data Operating temperature range –25 ℃~ +60 ℃ Relative operating humidity 0 %RH~100 %RH Max. operating altitude 2000m Cooling Natural convection Display LED indicators; integNominal WLAN + APP Communication RS485, WLAN Weight (kg)

  • Page 50: Trademarks, Copyrights And Legal Statement

    Midea Group and/or its a liates (“Midea”), to which Midea owns trade- marks, copyrights and other intellectual property rights, and all goodwill derived from using any part of an Midea trademark.
  • Page 51 European Economic Area. Further information are provided on request. You can contact our Data Protection O cer via MideaDPO@midea.com. To exercise your rights such as right to object your personal date being processed for direct marketing purposes, please contact us via MideaDPO@midea.com.
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  • Page 53 备注说明： 1.基准说明书按集团OBM产品要求，模板统一按集团要求设计，说明书中会根据基准产品的 信息。基准说明书只含基准机型信息，不包含订制机型信息。 2. 基准说明书封面设计了型号，按制单要求，以XXXXX形式体现。说明书中最后的内容： TRADEMARKS, COPYRIGHTS AND LEGAL STATEMENT，DATA PROTECTION NOTICE 以及制造商信息都为基准。需要业务和制单工程师根据客户实际信息以及认证进行更改替换。 3.基准说明书不能直接使用到机型上，必须由制单按实际生产信息进行更改，基准说明书仅 供制单参考。 说明书技术条件：（此页无需印刷） 材质：80克双胶纸 颜色：黑白 尺寸：210*290 装订：骑马钉...

This manual is also suitable for:

M1-t6kM1-t8kM1-t10k

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