AEC TOUGH-3P Series Installation Manual
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AEC TOUGH-3P Series Installation Manual

Three-phase grid-connected photovoltaic inverter
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Allis Electric Co., Ltd.
Installation Manual
Three-Phase Grid-Connected
Photovoltaic Inverter
TOUGH-3P - Series

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  • Page 1 Allis Electric Co., Ltd. Installation Manual Three-Phase Grid-Connected Photovoltaic Inverter TOUGH-3P - Series...
  • Page 3 All specifications are subject to change without prior notice. Ver. 1.0...
  • Page 4 These applied symbols are important for human safety. Violation of warnings may result in injury to persons or cause death. WARNING！ RISK OF ELECTRIC SHOCK WARNING！ RISK OF ELECTRIC SHOCK, ENERGY STORAGE TIMED DISCHARGE WARNING！ RISK OF DANGER WARNING！ HOT SURFACE REFER TO THIS OPERATIONAL MANUAL THIS MANUAL IS COPYRIGHT PROTECTED.
  • Page 5 Safety Notes General Cautions Read and follow all instructions in this manual. Failure to comply with the warnings in this manual may violate safety standards. The ！ manufacturer assumes no liability for the customer’s failure to comply with these requirements. Installation of the device must be in accordance with the relevant ！...
  • Page 6 Maintenance and Clean Each inverter is well calibrated before shipment and needs no additional maintenance during normal operation. Alterations are not to be made and no tampering with the assembly in the inverter without the manufacturer’s authorization unless ！ specified elsewhere in this manual. They may result in injury, electric shock, or fire and void the warranty.

  • Page 7: Table Of Contents

    Contents 1 INTRODUCTION ................1 1.1 G .................... 1 ENERAL 1.2 S ................. 2 PECIFICATIONS 1.3 F ............... 6 UNCTIONS AND EATURES 1.4 A ..................7 CCESSORIES 2 INSTALLATION .................. 8 2.1 P ..................8 LACEMENT 2.2 M ..................9 OUNTING 2.2.1 S ....................
  • Page 8 3.4.1 O ................30 PERATIONAL TATUS 3.4.2 C ................32 HECK RROR ESSAGE 3.4.3 S ..............33 ETTING BEFORE PERATION 3.4.4 I ....................35 NFORMATION 3.5 D ..........37 ESCRIPTIONS OF RROR ESSAGES 3.6 T ................ 42 ROUBLESHOOTING 4 TECHNICAL DOCUMENTATION ..........47 4.1 O ................
  • Page 9 List of Figures Fig 1: Grid connected solar system overview................. 1 Fig 2: Accessories in the package ....................7 Fig 3: Hanging surface ........................9 Fig 4: Clearances required for installation ................10 Fig 5: Fasten the mounting bracket ..................11 Fig 6: Hook the inverter on the mounting bracket ............
  • Page 10 Fig 29: MPP Efficiency of the TOUGH-3P-SERIES .............. 48...

  • Page 11: Introduction

    Introduction General The TOUGH-3P series is a three phase grid-connected inverter solution from AEC. The grid-connected inverter converts DC power yielded from solar array into AC power for household consumption. The inverter operates intelligently under normal conditions and provides no backup power in case of power cut.

  • Page 12: Specifications

    Specifications Model Tough-10K-3P Tough-12.5K-3P Tough-15K-3P Output Data (AC) Maximum AC Output Power 10,000VA 12,500VA 15,000VA Maximum AC Output Current 16.5 a.c.A 20 a.c.A 25 a.c.A Nominal AC Voltage 3x230 a.c.V/400 a.c.V Grid AC Frequency 50/60Hz, auto-selection Power Factor > 0.99 @ 20% load Reactive Power Factor 1 or adjustable from -0.8 to +0.8* Total Harmonic Distortion...
  • Page 13 Efficiency MPPT Efficiency >99.9% Maximum Efficiency 98.0% 98.1% 98.2% Euro. Efficiency 97.2% 97.3% 97.4% Consumption: <20W / <1W Operating (standby) / Night General Specification Dimensions (W x H x D) in mm 437 x 607 x 167 Weight 22.5kg Cooling Concept Forced Air Cooling Acoustic Noise Level <...
  • Page 14 Features DC Connection PV4, Tyco, MC4 DC Disconnect Option AC Connection AC connectors Display Large Iconic LCD screen Communication Interface RS485 , Ethernet/WiFi (Option) EMC & Low Voltage Directives 2004/108/EC & 2006/95/EC IEC/EN 62109-1/-2 , Standards VDE-AR-N 4105 Warranty 5 years Adjustable from 0.9 overexcited to 0.9 underexcited with VDE-AR-N 4105.
  • Page 15 Adjustable voltage, Frequency and Reconnection Settings VDE-AR-N 4105 Setting Range Default 50.05~51.50 51.5 Over-frequency (Hz) (60.05~61.50)* (61.5)* Over-frequency disconnection time (cycle) 1~10 47.50~49.95 47.50 Under-frequency (Hz) (57.50~59.95)* (57.50)* Under-frequency disconnection time (cycle) 1~10 Over-voltage (Vac) 235~264.5 264.5 Over-voltage disconnection time (cycle) 1~10 Under-voltage (Vac) 184~225...

  • Page 16: Functions And Features

    Functions and Features DSP (Digital Signal Processor) makes use of the advanced digital  control technology to enhance the conversion efficiency and the added functions.  Conformity to the EMC, Low Voltage Directives and Standards, e.g. 2004/108/EC, 2006/95/EC, IEC/EN 62040-1, IEC/EN 62109-1/-2 and VDE-AR-N 4105.

  • Page 17: Accessories

    Accessories Please check the inverter and accessories in the package. If there is some part incomplete or any pages missing from the manual, please contact the authorized agent. Please check the following items in the box: Photovoltaic Inverter x 1 Mounting Bracket x 1 Female Cable Coupler Plus Key x 4 and Minus Key x 4 AC Female Connector...

  • Page 18: Installation

    Installation 2.1 Placement Please take the following points into consideration when installing the inverter and selecting the installation location:  A solid and vertical wall is essential; not to hand it on a forward-tilting surface. The backward-tilting angle must be less than 10°. The installation location of the inverter must conform to the size and ...

  • Page 19: Mounting

    Fig 3: Hanging surface Mounting 2.2.1 Safety Notes Don’t remove the external cover of the inverter. No parts inside the inverter are to be maintained by the user. If necessary, only qualified maintenance staff can carry out; The solar panel exposed to sunlight supplies DC power.

  • Page 20: Install Inverter On Wall

    2.2.2 Install Inverter on Wall Select the appropriate space and the solid and vertical surfaces enough to support the inverter. The space surrounding the inverter must be appropriate so that heat can be dissipated easily and maintained conveniently, as shown below. Fig 4: Clearances required for installation...

  • Page 21: Fig 5: Fasten The Mounting Bracket

    The wall bracket is fixed on the wall by these 4～6 screws. The position of the fixing hole can be selected according to the wall condition. The construction can be referred in the following figure. Fig 5: Fasten the mounting bracket The four holes behind the inverter are simultaneously aligned with the four hooks on the bracket.

  • Page 22: Fig 7: Fasten The Screws

    Finally, the screws (see Appendix H in 1.4) are used to lock in the holes on the left and right sides of the support, so that the inverter can be fixed on the wall rack. Fig 7: Fasten the screws...

  • Page 23: Check Installation Status

    2.2.3 Check Installation Status Ensure the backward tilting angle of the installation wall should not exceed 10 , and the inverter can’t be installed on the walls which have forward-tilt. Ensure the inverter is correctly fixed on the hooks at the four corners of hanger.

  • Page 24: Iring The Nverter

    Wiring the Inverter 2.3.1 Safety Notes Avoid static discharge damaging inverter. The parts inside the inverter could be damaged due to the electric ！ static discharge. Please take the grounding measures prior to touching any internal parts and terminals. 2.3.2 Introduction The inverter comprises DC input (connect to solar panel), AC output (connect to service entrance, utility power) and communication ports (monitor the inverter status).

  • Page 25: Dc Input Wiring

    2.3.3 DC Input Wiring 2.3.3.1 Safety Notes Touching the energized parts or the metal part of the connector may cause electric shock. The solar panel exposed to sunlight supplies hazardous DC voltage. The maximum DC (PV array) input current of each MPPT in this inverter is 17.5 A, and the DC connector rating is 25 A.
  • Page 26 2.3.3.2 Connect Solar Connector Take the solar connectors from the package, which includes 2 male connectors (positive and negative, see section 1.4). Peel the DC wires insulation about 8~10 mm and insert them into the metal terminals to the end. Then use a connector plier to press the terminals.

  • Page 27: Fig 11: Complete Your Dc Terminals (Solar Panel)

    Ensure both the DC disconnect switch and the external AC breaker are in OFF position. Insert the pressed terminals to the female sockets. Only if the latch is in position does the DC wires connection be completed. Fig 11: Complete your DC terminals (solar panel)

  • Page 28: Com Line Connection

    2.3.4 COM Line Connection 2.3.4.1 Instruction The product is equipped with RS485 and WiFi/Ethernet (optional) interface. RS485 supports communication between multiple inverters in parallel so the two sets of RS485 pins are provided for this function. The inverter has equipped with four RJ45 sockets. Please refer to the figure/table below as to the pins assignment.
  • Page 29 RS485 socket:(for inverter monitoring) RJ45 Pin Description No Signal RX B (485B) +5V ISO GND No Signal No Signal TX A (485A) +5V ISO No Signal EM socket:(for energy meter) RJ45 Pin Description RX B (485B) TX A (485A) +5V ISO GND No Signal No Signal No Signal...

  • Page 30: Fig 14: Remove The Rs485 Port Housing

    2.3.4.2 Connection Ensure both the DC disconnect switch and the external AC breaker are in OFF position; loosen the screws and remove the housing of COM port. Fig 14: Remove the RS485 port housing Counter-clockwise loosen the waterproof cable gland nut, remove waterproof plugs behind cable gland nut.

  • Page 31: Fig 16: Assemble The Communication Cable

    Loosen the rear nut on the gland and pass the communication cable through one of the rubber holes. Fig 16: Assemble the communication cable Connect each thread to the correct terminal contact (see 2.3.4.1) and lock the COM port housing back to the inverter. Fig 17: Lock the RS485 port housing Check the cable length and tightness.

  • Page 32: Fig 19: Multi-Inverter Wiring By Rs485

    2.3.4.3 Connection in Parallel by RS485 For more than one inverter in a system, RS485 provides this convenient communication functions. The inverter provides two RS485 contacts. Basically one (contact) is of connecting to your monitoring device (e.g. PC); and the other one is for connecting with adjacent inverter.

  • Page 33: Ac Output Wiring

    2.3.5 AC Output Wiring 2.3.5.1 Safety Notes Ensure both the DC disconnect switch and the external AC breaker are in OFF position. The maximum AC output current of this inverter is 24.5 A per phase and the AC connector rating is up to 40 A. The diameter of the power wire (e.g.
  • Page 34 Then install the connector housing, which includes Red (L1 as live), Blue (L2 as live), White (L3 as live), Black (N as neutral) and Green (Ground) housing. A total of five wires: Red, Blue, White, Black, Green Fig 21: Assemble your AC connector housing - step 2 Ensure the electrical polarity (L1, L2, L3, N, G, see Fig 14) and push the connector housing into the inline receptacle kit until the latch is positioned.
  • Page 35 Fig 23: Assemble your AC connector cable - step 4 Ensure both the DC disconnect switch and the external AC breaker are in OFF position. Then, insert AC connector cable into the female socket on the inverter. Align the hook on male connector with the square hole on female socket when jointing.

  • Page 36: Fig 25: Complete Your Ac Wire Connection

    Install the connector cover back to the inverter. Only the screw fixed in place to complete the AC wire connection. Fig 25: Complete your AC wire connection Anderson Power Products (APP) 1309G3 crimp tool: For crimping PP15/45 loose piece strip contacts from #10 – 16 AWG (5.3 –...

  • Page 37: Operation

    Operation 3.1 Overview The DC (PV) voltage reaches a certain minimum voltage if sufficient insolation is available, the inverter will enter “grid-feed” mode. If, as nightfall approaches, the voltage drops below the minimum voltage value, grid-feed mode ends and the inverter will shut down itself. Fig 26: Overview front panel of the inverter LCD Display LED Display...

  • Page 38: Lcd Display

    3.2 LCD Display The display menu is shown once the inverter starts up. Measured values and all of the information are displayed here. The LCD continues to display the information following the process flow described below in this section. Fig 27: LCD display overview...

  • Page 39: Buttons On Panel

    3.3 Buttons on Panel By using the “▲”, “▼”, “OK” and “ESC” buttons, users may be able to view which measured value is to be displayed. “ ”, ▼ ▲ “ ” key: Press “▲” or “▼” key to switch the various displays for measured values and data.

  • Page 40: Operational Status

    3.4.1 Operational Status The following paragraphs explain how the display works in each mode. 1. Illumination: Automatically the inverter shuts down in case of the low insolation. 2. Standby: The Inverter sets the initial values and it waits to start up automatically in case the PV array voltage is sufficient.
  • Page 41 7. Derating: The inverter is limiting the maximum AC power feeding. This is not a malfunction. 8. Warning: The system has encountered some minor warning, but it can continue to feed the AC power to the grid. 9. Sys. Flash: The firmware is being updated. Sys.

  • Page 42: Check Error Message

    3.4.2 Check Error Message When error messages display, users could select the "Error message" by press the “▼” or “▲” key from the main menu and then press the "OK" key to confirm. For each page, there are recorded error events as shown in the following figure.

  • Page 43: Setting Before Operation

    3.4.3 Setting before Operation There are some parameters that can be re-configured from the panel. Users may select "Setting" from the main menu and press the "OK" key to enter system setting as shown below. Only the standard selection is password protected.
  • Page 44 Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ All the tripping-limit settings are protected by password. Only the authorized installers can adjust the protective functions under the approval of the distribution network operator (DNO).

  • Page 45: Information

    3.4.4 Information Users may select the "Information" from the main menu and press the "OK" key to enter system information as shown below. The screen will display information of your inverter including firmware and etc.  T/N: The model name of the inverter. ...
  • Page 46 Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓ Press “▼ / ▲” key ↑↓...

  • Page 47: Descriptions Of Error Messages

    3.5 Descriptions of Error Messages In the event of a fault, the inverter will stop feeding the AC power to the utility grid and display the error message on the LCD. Qualified service staff shall do the analysis, measurement, and debug, if needed, according to the error message in order to resume normal conditions.
  • Page 48  The AC current has exceeded the maximum permissible value.  The DC injection detection circuit failed.  The DC current injected into the utility grid side is too high.  The DC or AC current sensor is abnormal.  The DC current has exceeded the maximum permissible value.
  • Page 49  The direction of current flow of the energy meter is incorrect.  The hardware and MCU firmware version does not match.  The energy meter did not detect the user load. *warning message.  The AC voltage of the utility grid side has not been detected.
  • Page 50  The insulation resistance between PV array and the ground is below the allowable value.  The RTC is stopped abnormally. *warning message  The leakage current detected by inverter has exceeded the maximum permissible value.  Internal communication between MCU inside is abnormal.
  • Page 51  The AC voltage of utility grid is under the lower limit.  The AC voltage detection circuit failed.  The DC/DC converter is not working properly.  Internal DC bus voltage is too high.  Internal DC bus voltage is too low. ...

  • Page 52: Troubleshooting

    3.6 Troubleshooting The Inverter requires very little maintenance. When the inverter has encountered an event of fault, the error message will be displayed on the LCD and recorded in memory. If you encounter problems with the inverter, refer to the tables in this chapter for probable causes and recommended solutions, and then remove the fault condition(s) to have the inverter return to normal condition and continue to feed AC power to the utility.
  • Page 53 Error Message Possible Causes Disposal Measures EEPROM's Inform professional ■ ■ parameters are service staff to update unrecognized the EEPROM's parameters Cables or wires Make sure that the ■ ■ insulation is damaged insulation rating is and it causes a high sufficient for the ground fault current application...
  • Page 54 Error Message Possible Causes Disposal Measures Calibration Restart the inverter ■ ■ parameters have again if failed to restore deviated Inform professional ■ Circuits inside inverter service staff to check the ■ are abnormal calibration parameters The direction of Check current sensor ■...
  • Page 55 Error Message Possible Causes Disposal Measures The residual current Restart the inverter again; ■ ■ monitoring unit is Inform professional staff if abnormal. you fail to restore Dew or some object Check the impedance ■ ■ exits between PV array between PV(+), PV(-) and and earth.
  • Page 56 Error Message Possible Causes Disposal Measures Main voltage or Wait until the grid is ■ ■ frequency is higher back to stable. or lower than the Request the utility ■ permissible value supplier to improve and The settings are then inform ■...

  • Page 57: Technical Documentation

    Technical Documentation Outline Drawing Fig 28: Outline drawing...

  • Page 58: Mpp Efficiency

    4.2 MPP Efficiency The MPP efficiency is shown below. Fig 29: MPP Efficiency of the TOUGH-3P-SERIES...
  • Page 59 ALLIS ELECTRIC CO., LTD. 12F No. 19-11 SAN-CHUNG ROAD,NAN KANG DISTRICT TAIPEI, TAIWAN, R.O.C TEL:+886-2-2655-3456 FAX:+886-2-2655-2286...

This manual is also suitable for:

Tough-10k-3pTough-12.5k-3pTough-15k-3p

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