Midea M1-T4K User Manual
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Midea M1-T4K User Manual

Midea M1-T4K User Manual

Hybrid inverter
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HYBRID INVERTER
USER MANUAL
MODEL NUMBER:
M1-T(4-10)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(4-10)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 CONTENTS THANK YOU LETTER 1.ABOUT THIS MANUAL 2.BASIC SAFETY INFORMATION 3.PRODUCT OVERVIEW 4.FUNCTION DESCRIPTION...

  • 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 1.1 Structure of the manual This manual contains important safety and installation instructions that must be...

  • 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 182mm 102mm 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 manufacturer will not be held responsible for the usage of any load without confirmation.

  • 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

    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

    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(Europe) BACK-UP AC connector(Australia) PE terminal Current transformer (Optional) NCTK24 100A/5A Wireless module ON-GRID AC connector (Europe)
  • Page 20 Pictures Description Quantity ON-GRID AC connectorc (Australia) Disassembly Tool (Australia) 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 This topic describes the electrical connections of the inverter. Read this section thoroughly and carefully before connecting the cables. 7.1 Safety instructions 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 capacitor has been electrically discharged.
  • 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 Smart Meter Grid ① WEB&APP DCDC Router BAT+ Unit BAT- COM0 ⑤ COM1 ③ ② ④ ② COM0 BACKUP GRID COM1 Hybrid LOADS BACKUP without Backup inverter LOADS Wireless Wireless Module PV Array PV Array COM0 BAT+ BAT- PV2- PV2+ PV1- PV1+ Power Depends...
  • Page 28 N and PE cables are connected together in the Main Panel for wiring. Main panel Inverter BACK-UP BACK-UP Loads Battery Do not connect this terminal when the neutral wire and PE wire are connected together. Smart Meter Meter PV String Utility grid ON-GRID N-BAR...
  • Page 29 In Germany,the internal relay will automatically connect the N wire and PE cable in back-up mode within 100ms and automatically disconnect in on-grid mode. In ares other than Germany,the internal relay is disconnected by default in either mode. Inverter BACK-UP BACK-UP Loads Battery...
  • Page 30 BAT- BAT+ BAT- BAT+ Cascading Batteries (Optional) Battery Cascading Cable Connection Signal cable DC input cable Connecting Cascading DC Connecting a Signal Cable Input Power Cables (Cascading) Use Y connectors to connect the DC Prepare a signal cable terminal for input terminals (BAT+ and BAT–) connecting the BMS and the inverter.
  • Page 31 7.4 Ground Connection Connect the inverter to the equipotential bonding bar by using the protective earth cable (PE) for grounding. ATTENTION Pole Grounding not permissible! • As the inverter is transformerless, the plus and minus poles of the PV generator must NOT be earthed.
  • Page 32 Please follow below steps to install the AC connector. 7.5.1 AC-GRID Connection and AC-BACKUP Connection (Europe) 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.
  • Page 33 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. 7.5.2 AC-GRID Connection (Australia) 1) Select the suitable cable in accordance with above diagram. Remove the insulating layer of the AC-GRID output cable using a wire stripper and in accordance.
  • Page 34 3) Connect the AC-GRID cable in accordance with the following requirements and tighten the terminal using the Allen key. Connection Cable Phase 1 (brown) Phase 2 (black) Phase 3 (grey) Neutral conductor (blue) Grounding cable (yellow-green) 4) Assemble the connector housing and screw the cable gland tight. Note: Do not install disassembly tool.
  • Page 35 6) When you need to pull out the AC-GRID connector, insert the disassembly tool, then pull out the AC-GRID connector by flipping the disassembly tool counterclockwise. Note: After pulling out the AC-GRID connector, remove the disassembly tool immediately. 7.5.3 AC-BACKUP Connection (Australia) 1) Select the suitable cable in accordance with above diagram.
  • Page 36 2) Disassemble the connector in accordance with the following illustration. Guide the AC-BACKUP output cable through the cable gland. 3）Connect the AC-BACKUP cable in accordance with the following requirements and tighten the terminal using the Allen key. Connection Cable Phase 1 (brown) Phase 2 (black) Phase 3 (grey) Neutral conductor (blue)
  • Page 37 5) Connect the AC-BACKUP connector to the AC-BACKUP Port of the inverter by turning it clockwise until it locks into place. 6) When need to pull out the AC-BACKUP connector, press the buckle with a hard object such as a screwdriver. NOTE •...
  • Page 38 7.6 DC connection NOTE • The connection steps of the battery and PV are the same, only the terminal colour of PV terminal is black. Please observe the recommended cable dimensions: Outer diameter of cable (mm) Range Recommended value 4.0 - 6.0 4.5 - 7.8 1.
  • Page 39 CAUTION Danger of reverse polarity! • Ensure that the polarity is correct before plugging into the DC connections! 5. Insert the crimped DC cables into the corresponding connector housing until you hear a “clicking” sound. ① ② ① Positive power cable ②...
  • Page 40 NOTE NOTE • Insert the protective caps into the unused DC connections. • Insert the protective caps into the unused DC connections. Removing the connectors. Removing the connectors. CAUTION Danger of DC arcing • Before removing the plus and minus connector, ensure that the DC switch has been set to OFF.
  • Page 41 Meter A: With CT 100A/40mA Technical Data Manufacturer CHINT Model Meter(DTSU666), CT(NCTK-24) Voltage 3X220/380V ~ 3X240/415V Frequency (50/60) Hz White Blue White Blue White Blue 9 10 13 14 16 17 19 21 Energy meter pins (Brown) (Purple) Grid (Orange) (Blue) Pin 9 Pin 8...
  • Page 42 NOTE P2 Grid • The arrows on the current transformers direct to the grid. • Up to 100 A measurement • Ambient temperature: -25°C~70°C • Altitude:≤4000m GTF16-2K5-100A The energy meter is preconfigured to be used with the inverter with these settings: Modbus Address: 3 Baud Rate: 9600 Current Ratio: 2500:1...
  • Page 43 Meter B: Directly connected meter Technical Data Manufacturer CHINT Model Meter(DTSU666-Q) Voltage 3X220/380V ~ 3X240/415V Frequency (50/60) Hz Energy meter pins (Brown) (Purple) Grid (Orange) (Blue) Pin 9 Pin 8 24 25 Load RS485 RS485-A RS485-B...
  • Page 44 NOTE • Up to 80 A measurement • Ambient temperature: -25°C~70°C • Altitude:≤4000m The energy meter is preconfigured to be used with the inverter with these settings: Modbus Address: 3 Baud Rate: 9600 In case you want to change or check the settings, please refer to below procedure: Modbus Address and Baud Rate setting Power on Press for once...
  • Page 45 NOTE • Additional terminal resistors are not required on the inverter side. Only for long distance communication (more than 100m) and multiple devices connection （with AC-coupled meter, heat pump or EV Charger), it's recommended to add terminal resistance at the terminal device. 7.8 Wireless Module Connection Procedure: 1.

  • Page 46: Installing The Cable

    Definition Function DO1- Dry contacts of load control DE: DI2+ Connection of remote terminal unit for regulation by the grid operator (e.g. DE: AU/NZ: DRM0 fulfil EnWG § 14a requirements, AU/NZ: Demand response mode 0 (DRM0)) Dry contact of load control DO1+ DE: Used to connect to the GND of DI2 DE: DI2-...
  • Page 47 7.10 Switch ( Australia ) • For safety consideration, it is suggested that a reliable lock be used to lock the switch. • When the switch is in OFF gear, turn the switch counterclockwise to approximately 15° to the end and push the slide button towards the screw to lock the switch. •...

  • Page 48: Commissioning

    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 49 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 50 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 51: Maintenance

    9.MAINTENANCE If the inverter needs to be shut down for electrical inspection, please follow the following steps: 5. Wait for 5 minutes before checking the inverter. NOTE • The alarm information can be viewed on the monitoring portal and retrieved via the smartphone app. 9.2 Routine Maintenance Inverters do not generally require daily or routine maintenance.
  • Page 52 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 fin as follows Major: The inverter is faulty.

  • Page 53: 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 Check that the communications cable is Power Module...
  • Page 54 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 55 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting Check if the communications cable is Second The Second meter meter correctly installed and ensure that the communication is 1104 Warning communication parameters match the communica abnormal tion loss inverter RS485 configurations. The grid power exceeds the maximum feed-in power or peak-shaving...
  • Page 56 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting 1. Check the ventilation and whether 1. The installation position the ambient temperature of the of the battery power power control module exceeds the control module is not well upper threshold. ventilated.
  • Page 57 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting An unrecoverable fault them on after 5 minutes. If the alarm Equipment 2006 Major occurs on a circuit inside t persists, replace the monitoring board fault he device. or contact your dealer or technical support.
  • Page 58 Alarm ID Alarm Name Alarm Severity Possible Cause Trouble shooting 1. The voltage of the battery pack or its cell is 1. Connect to the power grid and too low. charge batteries in a timely manner. 2. The battery pack has Battery Pack 2.

  • Page 59: Handling The Inverter

    10.HANDLING THE INVERTER 10.1 Removing the inverter NOTICE 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. Remove the inverter from the mounting bracket. 3.

  • Page 60: Technical Data

    11.TECHNICAL DATA Model M1-T4K M1-T5K M1-T6K M1-T8K M1-T10K I nput (PV) Recommended max. PV power (Wp) 6000 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 61 AC short-circuit protection AC overvoltage protection LVRT Energy Management Black start Back-up power General Data –25°C ~ +60 °C Operating temperature range 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 62: Trademarks, Copyrights And Legal Statement

    Midea may constitute trademark infringement or unfair competition in violation of relevant laws. This manual is created by Midea and Midea reserves all copyrights thereof. No entity or individual may use, duplicate, modify, distribute in whole or in part this manual, or bundle or sell with other products without the prior written consent of Midea.

  • Page 63: Data Protection Notice

    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. To find further information, please follow the QR Code. The design and specifications are subject to change without prior notice for product improvement.
  • Page 64 2023 16114600000661 20250624...

This manual is also suitable for:

M1-t5kM1-t6kM1-t8kM1-t10k

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