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Et system EAC-4Q-GS Manual

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ET System electronic GmbH
www.et-system.de
Manual
Hauptstraße 119 – 121
D – 68804 Altlußheim
Bidirektionale
AC-Quellen EAC-4Q-GS
Bidirectional
AC Sources EAC-4Q-GS
Vertrieb Kontakt: Tel.: +49 (0)6205 / 394 80
ales contact:
info@et-system.de

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Summary of Contents for Et system EAC-4Q-GS

  • Page 1 Bidirektionale AC-Quellen EAC-4Q-GS Bidirectional AC Sources EAC-4Q-GS Manual ET System electronic GmbH Hauptstraße 119 – 121 Vertrieb Kontakt: Tel.: +49 (0)6205 / 394 80 www.et-system.de D – 68804 Altlußheim ales contact: info@et-system.de...
  • Page 2 INFO & CONTACT ADDRESSES ET System electronic GmbH was founded in 1986 in the heart of the Rhine-Neckar-Triangle. As a subsidiary of a leading electricity utility group, the company quickly took on a leading role in the area of laboratory power electronics and associated electrical measurement.
  • Page 3 This manual is based on the technical status at the time of printing. ET System will make every effort to ensure that the information in this manual is up-to-date and accurate. It will be modified without notice.
  • Page 4 To prevent potential hazards, please follow the instructions in the manual to safely use the instrument. ET System electronic GmbH have no liability for failures caused by violate protective measures or other safety regulations.
  • Page 5 Safety Notices and Symbols Safety Symbols PROTECTIVE EARTH SHOCK HAZARD WARNING TERMAINAL Other Symbols IMPORTANT INFORMATION Safety Information WARNING If improperly operated, it may cause injury or danger immediately. WARNING Potentially dangerous situation or practice. If not avoided, it will result in serious injury or death.

  • Page 6: Table Of Contents

    Content Safety Requirements ......................... 4 Part I Equipment Introduction....................10 System Overview ..................... 11 Overview of EAC-4Q-GS series ..................11 1.1.1 1.1.2 Model Description ................... 11 1.1.3 Features and configuration ................11 1.1.4 General Specification ..................12 Appearance and structure of Equipment ..............14 1.2.1...
  • Page 7 Part IV Function and Feature Introduction................48 Grid Simulation Function..................49 Re-generative AC Load (-LD option) ................ 52 Extends to DC output (-DC option) ................53 Line impedance (RL) Simulation (-IMP option) ............53 Part V Software Interface ....................54 GUI Software Introduction ..................
  • Page 8 Equipment Repair ....................94 7.2.1 Equipment self-test ....................94 7.2.2 Maintenance service ....................94 7.2.3 Equipment returns ..................94 Part VIII Programming ......................95 Command Format ....................96 8.1.1 Parameters data type ..................96 8.1.2 Command parameters/Return valve units ............96 8.1.3 Command format ....................

  • Page 9: Part I Equipment Introduction

    Part I Equipment Introduction 1.1 System Overview 1.1.1 Overview of EAC-4Q-GS 1.1.2 Model description 1.1.3 Features and configuration 1.1.4 General specification 1.2 Appearance and Structure of Equipment 1.2.1 Appearance and outline 1.2.2 Front panel 1.2.3 Rear panel 1.2.4 Internal structure 1.2.5 Control module of front panel...

  • Page 10: System Overview

    1.1 System Overview 1.1.1 Overview of EAC-4Q-GS series The EAC-4Q-GS is a high-performance and multi-functional grid simulator, using advanced PWM technology, which contains multiple output power levels from 30kVA to 500kVA and above for single system, and up to 4 individual systems can be paralleled to achieve power levels up to 2MVA.

  • Page 11: General Specification

    ▪ TFT-Touch panel operation ▪ LAN/RS485 interfaces (standard), RS232/Analog control interfaces (optional) ▪ Mod-bus/SCPI protocols ▪ Emergency stop button ▪ Switchable insulation monitoring ▪ Output contactor ▪ Remote sense ▪ CE conformity ▪ Customized voltage, current and power ranges 1.1.4 General Specification Output Input Output Modes...
  • Page 12 Power Level 30kVA 60kVA 120kVA 250kVA 500kVA Voltage Range 0-300V L-N Output 46A/ph 91A/ph 182A/ph 379A/ph 758A/ph current Dimension 800*800*1900 800*800*2200 2*800*800*2200 2*900*900*2200 4*900*900*2200 (W*D*H mm) Weight <800kg <1000kg <1700kg <2500kg <5000kg *other Power/Voltage Level can be offered. Contact Sales.

  • Page 13: Appearance And Structure Of Equipment

    TTL interface (standard), ATI interface (optional) which is for automated test applications on the rear panel. Figure 1-1 Overall appearance 1.2.2 Front Panel The front panel of EAC-4Q-GS series is equipped with a TFT-Touch panel displayer (12 inch), status indicators, power knob, emergency stop button and RS232 interface (optional).
  • Page 14 Figure 1-2 Front panel Table 1-1 Number Name Notes ① White Light The power supply is standby. ② Green Light The power supply is operating normally. ③ Red Light The power is failure. Capacitive TFT touch panel displayer (12 inch), using the Windows OS., provides a GUI software , and has the ④...

  • Page 15: Rear Panel

    1.2.3 Rear panel The rear panel of EAC-4Q-GS is equipped with RS485/LAN interface (standard), TTL interface(standard) and ATI interface (optional). Figure 1-3 Rear panel Table 1-2 Number Name Note RS485 interface Standard configuration, used for remote control. ① Standard configuration, it is a communication interface, ②...

  • Page 16: Internal Structure

    1.2.4 Internal structure As shown in Figure 1-4, take EAC-4Q-GS 200-300-300 as an example, from top to bottom, the internal modules of EAC-4Q-GS series are: ①control box layer, ②module layer, ③other input/output component layer, ④wiring layer and other interface layers.

  • Page 17: Connection Layer And Other Interface Layers

    Figure 1-5 Front panel of control module Table 1-3 Number Number Notes ① LAN interface Standard, for touch screen communication ② LAN interface Standard, for debugging and firmware update ③ For control module heat dissipation ④ Power switch For the power on / off the control module Optional, for communication between power supply.
  • Page 18 →C phase remote sense interface（+，-） IMPORTANT INFORMATION Figure 1-6 takes EAC-4Q-GS 200-300-300 as an example. Affected by the output voltage/current level, electrical clearance and creepage distance, the position of the output copper bar and other terminals may change. Please...

  • Page 19: Interface Description

    1.3 Interface Description 1.3.1 LAN interface（standard） The LAN interface is one of the equipment communication interfaces. 1.3.1.1 Location of LAN interface The two LAN interfaces on front panel of the control module are used for touch panel communication (Figure 1-7①) and hardware debugging (Figure 1-7②). Figure 1-7 front panel of the control module IMPORTANT INFORMATION The LAN interface (Figure 1-7①) is connected to the touch panel by defaul t before...

  • Page 20: Rs485 Nterface (Standard)

    Figure 1-9 Rear panel 1.3.2.2 Connection of RS485 interface The RS485 interface of EAC-4Q-GS series adopts "two-wire + signal ground" wiring. In low- speed, short-distance, non-interference occasions, ordinary twisted-pair wire can be used. Conversely, in high-speed and long-line transmission, RS485 special cable (STP-120Ω 18 AWG) (one pair) with impedance matching (generally 120Ω) must be used.

  • Page 21: Rs232 Interface (-232 Option)

    interference, armored twisted pair shielded cable (ASTP-120Ω 18AWG) (one pair) should also be used. The connection method is shown in Figure 1-10. Figure 1-10 Connect RS485 The port setting information: Port: COM port on control PC Baud Rate: 9600 Data Bits: Stop Bits: Parity: None...
  • Page 22 Figure 1-13 Front panel of the power supply 1.3.3.2 Connection of RS232 interface The RS232 interface usually appears in the form of 9 pins (DB-9). Two RS232 interfaces (one male and one female) can be used by directly plugging in the interconnect normally. The meaning of the pins is as follows.

  • Page 23: Ttl Interface (Standard)

    DTR（Data Terminal Ready） Data Terminal Ready → SG（Signal Ground） Signal Ground Data Set Ready DSR（Data Set Ready） ← RTS（Request To Send） Request To Send → CTS（Clear To Send） Clear To Send ← RI（Ring Indicator） Ring Indicator ← The port setting information: Port: COM port on control PC Baud Rate:...

  • Page 24: Ati Interface (-Ati Option)

    The output voltage of power supply can be controlled via control signals and by using the analog input (ATI interface). EAC-4Q-GS uses BNC connector for this analog input. The set value is adjusted according to the analog input voltage (0-5 V).

  • Page 25: External Emergency Stop Interface (Standard)

    1.3.5.2 Connection of ATI interface The ATI interface of the EAC-4Q-GS appears as BNC. The connection between the equipment and the signal generator is shown in Figure 1-16. Figure 1-16 ATI interface connection method 1.3.6 External emergency stop interface (standard) EAC-4Q-GS provides an external emergency stop interface, which can be connected to the user's external emergency stop switch.

  • Page 26: Remote Sense Interface (Standard)

    Figure 1-17 1.3.6.2 Connection of emergency stop interface T he wiring methodof external emergency stop is shown in Figure 1-18. Figure 1-18 Emergency stop interface connection method 1.3.7 Remote sense interface (standard) The remote sense wire is connected to the output terminal of the power supply by the remote sense port.
  • Page 27 Fugure 1-19 1.3.7.2 Connection of remote sense interface The remote sense interface is connected to the output terminal of the EAC-4Q-GS power suppLy by default before leaving the factory, as shown in Figure 1-20. Figure 1-20 Remote sense connection (factory default wiring status)

  • Page 28: Master-Slave Interface（-Ms Option

    Figure 1-21 Remote sense connection method 1.3.8 Master-slave interface（-MS option） EAC-4Q-GS support parallel connection of power supply of the same power. 1.3.8.1 Location of master-slave interface The master-slave interface is located on the front panel of the power supply control box, as shown in Figure 1-22⑤.
  • Page 29 1.3.8.2 Connection of master -slave interface When power supplies are connected in parallel, the specific operation steps are as follows. Step 1: Pass the fiber optic cable through the cable hole on the top of the cabinet, as shown in Figure 1-23.
  • Page 30 IMPORTANT INFORMATION If the parallel slave is designed without a touch screen, in addition to the optical fiber cable, the parallel communication network cable needs to be inserted through the threading hole on the top of the cabinet, and then connect as shown in Figure 1-25.

  • Page 31: Part Ii Equipment Installation

    Part II Equipment Installation Check before Installation 2.1.1 check the packing 2.1.2 check the equipment Equipment Installation 2.2.1 Selection of input/output cables 2.2.2 Installation steps 2.2.3 Add single-phase output (-1P option) 2.3 Parallel installation of equipment...

  • Page 32: Check Before Installation

    2.1 Check before Installation 2.1.1 Check the packing when receiving the power supply of EAC-4Q-GS, if the packing is damaged, do not dispose the damaged packing or cushioning materials before checking the integrity of the goods and electrical/mechanical testing. The shipper/carrier should be responsible for product damage caused by the shipment.

  • Page 33: Equipment Installation

    2.2 Equipment Installation 2.2.1 Selection of input/output cables Before the equipment is installed, the user should confirm the model on the nameplate, select the appropriate specifications of the cable and the cold end according to the equipment input/output voltage level and current of the equipment, and crimp the input side cable and the output side cable.
  • Page 34 Step 2: The input terminal (PE/N/A/B/C) and output terminal (N/A/B/C) of the equipment are shown in Figure 2-4, pass the cable through the inlet hole at the bottom and connect it to the terminal. Figure 2-4 Copper bar CAUTIOUS To avoid electrical hazards, connect the ground terminal to the protective ground terminal before connecting any input or output terminals.

  • Page 35: Add Single-Phase Output (-1P Option)

    2.2.3 Add single-phase output (-1P option) EAC-4Q-GS with the -1P option adds a single-phase output function. By changing the wiring method (parallel three-phase output terminals, as shown in Figure 2-6), the output current can be increased to three times the single-phase current.

  • Page 36: Parallel Installation Of Equipment

    2.3 Parallel installation of equipment EAC-4Q-GS support parallel connection of power supply of the same power.the specific operation steps are as follows. Step 1: Pass the fiber optic cable through the cable hole on the top of the cabinet, as shown in Figure 2-7.
  • Page 37 IMPORTANT INFORMATION If the parallel slave is designed without a touch screen, in addition to the optical fiber cable, the parallel communication network cable needs to be inserted through the threading hole on the top of the cabinet, and then connect as shown in Figure 2-9.
  • Page 38 Step 4: As shown in Figure 2-11, connect the input and output cables of the two equipment in parallel. Figure 2-11 Wiring diagram between parallel cabinets Step 5: After completing the above parallel work, complete the remaining wiring according to 2.2.2.

  • Page 39: Part Iii Power-On Operation

    Part III Power-on Operation 3.1 Power-on Operation 3.2 GUI Software Operation (Local Control) 3.3 GUI Software Operation (Remote Control) 3.4 Power-off Operation...

  • Page 40: Power-On Operation

    To prevent any damage to the equipment, make sure to confirm the correct wiring sequence. SHOCK HAZARD The voltage generated by EAC-4Q-GS equipment may cause personal injury or death. When the power is on, do not touch the exposed connectors and parts.
  • Page 41 Step 3: Turn on power knob Turn clockwise to close the control switch on front panel (figure 3-3⑤) after closing the cabinet door, the power supply is standby. If the power supply communication connection is normal, the white light is always on (figure 3-3①). Figure 3-3 Front Panel...

  • Page 42: Gui Software Operation (Local Control)

    3.2 GUI Software Operation (Local Control) EAC-4Q-GS provide GUI software, it is installed in the touch panel, which uses Windows OS. (the software can also be installed on the control PC connected to the power supply). A few seconds after the power is initialized, the control unit and touch screen work, the power supply is standby.

  • Page 43: Gui Software Operation

    3.3 GUI Software Operation(Remote Control） EAC-4Q-GS provides GUI software, which can be installed on the control PC connected to the power supply. The detailed operation information is in Part V.

  • Page 44: Power Off Operation

    3.4 Power off Operation Step 1: Close the GUI software on the TFT-Touch panel /PC and shut down. Step 2: Turn the power knob counterclockwise (Figure 3-9⑤). Figure 3-9 Front panel Step 3: Open the cabinet door and power off the control unit switch (Figure 3-10④). Figure 3-10 Front panel of control module IMPORTANT INFORMATION Closing the switch on the front panel of the control box at the first time.
  • Page 45 Step 4: Power off circuit breaker of the AC input side (Figure 3-11①). Figure 3-11...

  • Page 46: Part Iv Function And Feature Introduction

    Part IV Function and Feature Introduction Grid Simulation Function 4.1.1 Low/zero voltage ride through test 4.1.2 three-phase unbalance, harmonics, and inter-harmonics 4.1.3 harmonics and inter-harmonics Re-generative AC Load (LD option) Extends to DC output (DC option) Line impedance (RL) Simulation (IMP option)

  • Page 47: Grid Simulation Function

    4.1 Grid Simulation Function EAC-4Q-GS can be used as a grid simulator to meet the requirements of grid tied DG regulations testing, such as: grid voltage abnormality test, grid frequency abnormality test, low/zero voltage ride through test, anti-islanding test, etc. It have Various simulation functions, including voltage and frequency fluctuations, voltage sags, low/zero voltage ride through, three-phase unbalance, harmonics and inter-harmonics.
  • Page 48 Voltage drop simulation (LVRT for inverter test) EAC-4Q-GS provide firmware and software support for low/zero voltage ride through test for PV inverters. EAC-4Q-GS is used to simulate grid voltage/frequency changes, drops and sags to meet the low voltage ride through test requirements of PV inverters.
  • Page 49 EAC-4Q-GS can also capture, display, and save the output voltage and current Waveforms and store them inside the power supply for retrieval and analysis by users. Figure 4-10 Waveform browsing panel The output terminal of EAC-4Q-GS can be short-circuited and supports short-circuit test.

  • Page 50: Re-Generative Ac Load (-Ld Option)

    CF=1.414 CF=2 CF=3 Angle=+90° Angle=-90° EAC-4Q-GS-LD is suitable for the case where the input voltage is a pure sine wave. If the input voltage is not a pure sine wave, the output current waveform may be affected.

  • Page 51: Extends To Dc Output (-Dc Option)

    4.3 Extends to DC output (-DC option) In source and sink mode, EAC-4Q-GS can also be DC output, the frequency range will be DC~100Hz. The DC voltage range is 420V (std), and accuracy is 0.2%FS. The output mode can be AC/DC//AC+DC.

  • Page 52: Part V Software Interface

    Part V Software Interface 5.1 GUI Software Introduction 5.1.1 Operating status 5.1.2 Sequence mode 5.1.3 Input/output controls 5.2 Communication Setting 5.3 Hardware Limits 5.4 Sequence Mode 5.5 Analog Input 5.6 AC+DC/AC/DC 5.6.1 5.6.2 AC+DC 5.6.3 5.7 Harmonic and inter-harmonic simulation 5.7.1 Harmonic simulation 5.7.2...
  • Page 53 5.10.1 Real-time Waveform browsing 5.10.2 Historical Waveform browsing 5.11 System Status 5.12 Administrator Account 5.13 Waveform reproduction function...

  • Page 54: Gui Software Introduction

    5.1 GUI Software Introduction 5.1.1 Operating status EAC-4Q-GS provides GUI software, which is installed on the front touch screen using the Windows OS. (the software can also be installed on the control PC connected to the power supply). A few seconds after the power supply is initialized, the control unit and touch screen work, the power supply is standby.

  • Page 55: Sequence Mode

    The red light indicates the equipment automatically stops working ② Fault when a fault occurs during operation. If the equipment runs in normal, the light is dark green. When equipment is operating normally and output AC/DC, the ③ Output green light is always on. When the equipment has no output, the light is dark green.

  • Page 56: Input/Output Controls

    Manual setting of parameters in sequence -SEQ Parameter mode. ② Input Mode Analog input via ATI interface (-ATI option). -ATI AC output mode. Output DC output mode. ③ Mode AC + DC AC+DC output mode (-DC option). IMPORTANT INFORMATION Output mode-DC mode is only valid after the user selects -DC option, otherwise the setting is invalid.

  • Page 57: Communication Setting

    5.2 Communication Setting Before establishing a network connection between the power supply and the remote workstation/PC, make sure that the remote workstation/PC and the power supply are on the same network segment. The default network address of the power supply is 192.168.1.2, the port is 502, and the default gateway is 255.255.
  • Page 58 In general, the hardware of workstation/PC connecting to the power supply must follow the requirements: Processor: Intel core 2 duo or above  RAM：2GB or above  Operating System：Windows 7 or above  10/100/1000 Mbps network port adaptor  Network Switch (LAN users) ...

  • Page 59: Hardware Limits

    5.3 Hardware Limits To operate safety, please set the relevant protection parameters before the formal test. Operation steps: Click "Hardware Limits" to enter the panel (Figure 5-7). After setting the parameters, click "Apply". Figure 5-7 Hardware limits panel Table 5-4 Number Name Note External emergency stop check box, the external...
  • Page 60 Three-phase parallel output (-1P option), the three- ④ Three-phase Parallel (Phase A) phase parallel output is valid after checking. Overcurrent protection value, when the output ⑤ OCP (Max~120%) current exceeds the value, the power output will be off. Overvoltage protec tion value, when the output ⑥...

  • Page 61: Sequence

    5.4 Sequence The output parameters of EAC-4Q-GS power supply can be controlled through GUI software. The sequence mode interface supports a variety of parameter settings, including output phase voltage/phase current, phase angle, frequency, on/off phase angle, dwell time, and switching time. The output parameters are displayed in real time at the top of the panel, the storage and loading of complex sequences can also be realized.
  • Page 62 The user can set the on/off phase angle of a phase of each step. Parameter ③ The power system refers to the dwell time firstly by default, and setting 2 then refers to the on/off phase angle. IMPORTANT INFORMATION When the power supply is working, if the parameters need to be modified, please directly click the Keyboard button to modify the parameters, and finally click Apply (no need to turn off the power).

  • Page 63: Analog Input

    5.5 Analog Input The output voltage of EAC-4Q-GS can be controlled by control signal and using analog input (ATI interface). The ATI interface is located on the rear panel of power supply, please refer to 1.3.5 for specific connection. The BNC connectors for analog input is used. The set value will be adjusted according to the AC/DC voltage (0-5 V) of the analog input.

  • Page 64: Ac/Ac+Dc/Dc

    5.6 AC/AC+DC/DC EAC-4Q-GS adopts bidirectional design and can be used as AC/DC power supply for DUT. The output modes include: AC, DC, AC+DC. Figure 5-13 Output mode 5.6.1 AC The EAC-4Q-GS allows the generation of AC voltage, current which can simulate the real AC circuit conditions.

  • Page 65: Ac+Dc

    AC current can be output 138A. (when related to wiring issues, please combine 2.2.2 and 2.2.3) 5.6.2 AC+DC The EAC-4Q-GS support AC+DC output mode. Test steps: Click "Sequence" to enter the panel, select AC+DC output mode (AC+DC) on the right side (Figure 5-13 ③...

  • Page 66: Dc (-Dc Option)

    5.6.3 DC (-DC option) In source and sink mode, EAC-4Q-GS can also be designed as a DC output, allowing DC voltage and current to be generated. The output frequency range is extended to DC~100Hz. The DC voltage range is 420V (standard), and the accuracy is 0.2% FS.

  • Page 67: Harmonic And Inter-Harmonic Simulation

    5.7 Harmonic and inter-harmonic simulation 5.7.1 Harmonic simulation EAC-4Q-GS provides GUI software, which can edit up to the 50th harmonic. Test steps: Click "Sequence Mode" to enter the panel, firstly set the operating parameters (such as output voltage, frequency). Click "Apply"→"Power On"→"Output On", the power supply is on. Check the harmonic selection box (Figure 5-15①), click the A/B/C phase harmonic simulation button...

  • Page 68: Inter-Harmonic Simulation

    Figure 5-16 Harmonic Edit-1 5.7.2 Inter-harmonic simulation EAC-4Q-GS series power supply provides GUI software, which can edit inter-harmonic. Test steps: Click "Sequence Mode" to enter the panel, firstly set the operating parameters (such as output voltage, frequency, etc.).
  • Page 69 button (Figure 5-17②), the inter-harmonic setting panel will automatically pop up (Figure 5- 18). The user can set the inter-harmonic frequency, angle, content, and other parameters on this panel. After the parameter setting is completed, check the corresponding box, and click "Setting"...

  • Page 70: Simulation Of Re-Generative Ac Load

    5.8 Simulation of Re-generative AC Load EAC-4Q-GS series with -LD option can be used as regenerative AC electronic load. This function consists of CR mode, Rectifier mode, CC/CP phase lead/lag mode. 5.8.1 CR mode CR mode is used to simulate three-phase resistive loads, the CR mode and three-phase resistance parameters can be set through the panel.

  • Page 71: Rectifier Mode

    5.8.2 Rectifier mode Rectifier mode is mainly used to simulate nonlinear Rectifier load testing. Users can set parameters such as CC/CR mode, load current/power value and CF value (setting range 1.414~3) through the panel. Test steps: Click "Sequence" to enter the panel, select the CC/CP mode on the right side of the panel and set the three-phase current/power parameters and CF parameter values (Figure 5-20), then click "Apply"→"Power On"→"...

  • Page 72: Cc/Cp Phase Lead/Lag Mode

    5.8.3 CC/CP phase lead/lag mode When the CC/CP phase lead/lag mode simulates sinusoidal current, the user can set the CC/CP mode through the panel to adjust the load current or power, and the phase angle range can be adjusted from 90° to -90°, which simulates inductive and capacitive loads Voltage and current conditions.

  • Page 73: Measurements

    5.9 Measurements The GUI software of EAC-4Q-GS series can monitor the input/output status of the equipment in real time. Click "Measurement" to enter the panel. The user can monitor real-time Input current/voltage/power (Figure 5-22), output current/voltage/ power, output frequency and other parameters on this panel (Figure 5-23).

  • Page 74: Waveform

    5.10 Waveform 5.10.1 Real-time waveform browsing The GUI software of EAC-4Q-GS Series can record the waveform of output voltage and current, and store in the TFT touch panel/workstation, for the user to retrieve browsing and analysis in future. Steps: Click "waveform" to enter the panel (Figure 5-24). In the window of waveform browsing, the user can individually or simultaneously select the data of output voltage or output current (Figure 5-24⑦) and browse the waveform.

  • Page 75: Historical Waveform Browsing

    5.10.2 Historical waveform browsing The GUI software of EAC-4Q-GS series can record the waveform of output voltage and current, and store it in the TFT touch panel/workstation, for users to retrieve browsing and analysis in future Operation Steps: Click "Historical Data"...
  • Page 76 Figure 5-25 Historical waveform panel...

  • Page 77: System Status

    5.11 System Status The user can browse the status of each part of the system during the testing through the GUI software. Operation steps: Click "System Status" to enter the panel, users can browse equipment faults and status (Figure 5-26), software faults and status (Figure 5-27). Green light means no fault, and red light means fault occurs.

  • Page 78: Administrator Account

    5.12 Administrator Account After entering the administrator account, the internal parameters can be set. It is not recommended that the user enter the account to avoid accidental settings causing equipment failure or loss of accuracy. The default login account is a guest account, and all functions of the power supply are open and can be used normally.

  • Page 79: Part Vi Equipment Verification And Calibration

    Part VI Equipment verification and calibration Performance Verification 6.1.1 Verify equipment and settings 6.1.2 Verify content Voltage Range Current Range Frequency Range Voltage Accuracy Current Accuracy Frequency Accuracy Power Accuracy Output Characteristics Load Regulation Voltage THD Ripple Test Harmonic Test Inter-harmonic Test Electronic load test Voltage drop Change...

  • Page 80: Performance Verification

    6.1 Performance Verification 6.1 1 Verity equipment and settings Figure 6-1 Three-phase output test with resistive load Figure 6-2 Single-phase output test with resistive load Figure 6-3 Load step change test...
  • Page 81 Keep the cable length as short as possible, and use twisted or shielded cables to reduce noise. SHOCK HAZARD Danger of electric shock, the voltage generated by EAC-4Q-GS series equipment may be lethal! Make sure that all equipment and load wiring are connected reliably. When connecting / disconnecting any equipment which connected to the power supply or changing the wiring, turn off the power supply, and do not live working.

  • Page 82: Verity Content

    6.1.2 Verity content • Voltage Range Connect the input side of the AC/DC source to the power grid, so that the input voltage is within the operating voltage range of the power supply, and the output side is connected to a pure resistive load. Adjust the output voltage value within the rated voltage range, read and record the measured value on the power analyzer.
  • Page 83 • Current Accuracy Connect the input side of the AC/DC source to the power grid, so that the input voltage is within the operating voltage range of the power supply, and the output side is connected to a pure resistive load. Set the output voltage value to make the power supply work within the rated output current range, read and record the output current measurement value on the power analyzer and the power supply, and take the largest error for calculation.
  • Page 84 the power analyzer and the power supply, and take the largest error for calculation. The power accuracy is obtained by the following formula: | �� − �� | �� = × 100% �� And: —— Power Accuracy; �� �� —— Power value measured via power analyzer, kW; ��...
  • Page 85 the rated output voltage range, read and record the output voltage measurement value on the power analyzer when there is no-load and On-load, and set the frequency value as:50Hz/1000Hz/2000Hz. Read and record the various voltage THD on the power analysis. •...
  • Page 86 voltage is within the operating voltage range of the power supply. The AC load function consists of CC&CP Rectifier mode, CC&CP lead/lag mode, and CR mode. Set parameter values such as CC/CP mode, CF and phase angle on the panel (the phase angle setting range is 90°~-90°, the CF parameter setting range is 1.414~3), read and record the oscilloscope waveform.
  • Page 87 within the rated output voltage range, read and record the offset measurement values on the power analyzer and the power supply. • TTL Signal Trigger Connect the input side of the AC/DC source to the power grid, so that the input voltage is within the operating voltage range of the power supply.

  • Page 88: Test Record Form

    • LCD Display Test In the setting and running state, there is no flicker and flower on LCD screen. • Noise test • Temperature test 6.2 Test Record Form Please refer to the EAC-4Q-GS test report.

  • Page 89: Part Vii Equipment Maintenance And Repair

    Part VII Equipment Maintenance and Repair Equipment Maintenance 7.1.1 Equipment operating environment 7.1.2 Equipment maintenance Equipment Repair 7.2.1 Equipment self-test 7.2.2 Maintenance service 7.2.3 Equipment return...

  • Page 90: Equipment Operating Environment

    7.1 Equipment Maintenance Please be careful of the maintenance environment of equipment. ET System electronic GmbH has no liability for failures caused by breaking equipment rules. 7.1.1 Equipment operating environment • The equipment is used indoors, and the operating temperature is not higher than 40 ° C and not lower than 0 °...

  • Page 91: Equipment Repair

    ET System electronic GmbH has no liability for equipment failure caused self-assembly. 7.2.2 Maintenance service If the purchased equipment failure during the warranty period, ET System electronic GmbH will repair the equipment according to the specific information provided by the customer. Contact information is on Page 05.

  • Page 92: Part Viii Programming

    Part VIII Programming Command Format 8.1.1 Parameters data type 8.s1.2 Command parameters/Return value units 8.1.3 Command format Command Sets 8.2.1 Common commands 8.2.2 SCPI and panel comparison 8.3 Example...

  • Page 93: Command Format

    Reactive Power KVA (Kilovolt-ampere) Time mS (Millisecond) 8.1.3 Command format The command set of the EAC-4Q-GS series are divided into the following two command formats: <*>command characters<?> e.g., *IDN? or Remote?  Command characters_<value> e.g., POWER 1 or SET: VOLT 100.0...

  • Page 94: Command Sets

    8.2 Command Sets 8.2.1 Common commands Commands Return Value Description Return: EAC-4Q-GS-***-*** Return the information of *IDN Firmware Version 1.0 equipment *RST None Fault Rest Inquire status Remote/Local. It will return 1 if Remote? Remote,1/0 working in Remote mode, else return 0.
  • Page 95 Inquire the value of Output OPC? OLP <,NRf> Peak Current Limit Set the value of DC Offset DOVC <NRf> None Voltage climbing Inquire the value of DC Offset DOVC? DOVC <,NRf> Voltage climbing Set the value of DC Offset DOCC <NRf> None Current climbing Inquire the value of DC Offset...
  • Page 96 SET:AMPB <NRf> None Set the value of amplitude of B SET:PHASEC <NRf> None Set the value of phase of C SET:AMPC <NRf> None Set the value of amplitude of C SET:FREQ? SET: FREQ<,NRf> Inquire the value of frequency SET:PHASEA? SET: PHASEA<,NRf> Inquire the value of phase of A Inquire the value of amplitude SET: AMPA?
  • Page 97 OFFSET:B? OFFSET:B<NRf> Inquire the dc offset of B OFFSET:C? OFFSET:C <NRf> Inquire the dc offset of C OFFSET OFFSET? Inquire the dc offset of A~C <NRf1><,NRf2><,NRf3> Validate the offset parameters OFFSET APPLY None that have been set. Measure the voltage of output VOLT:A? VOLT:A<NRf>...

  • Page 98: Scpi And Panel Comparison

    Measure the dc current of CURDC:C? CURDC:C<NRf> output C CRUDC Measure the dc current of CURDC? <NRf1><,NRf2><,NRf3> output A~C Inquire frequency FREQ:A? FREQ:A<NRf> output A Inquire frequency FREQ:B? FREQ:B<NRf> output B Inquire frequency FREQ:C? FREQ:C<NRf> output C FREQ<NRf1><,NRf2><,NRf3 Inquire frequency FREQ? >...
  • Page 99 OPC <NRf> None Set Output Peak Current Limit Set the value of DC Offset Voltage DOVC <NRf> None climbing Set the value of DC Offset Current DOCC <NRf> None climbing Inquire the value of DC Offset Voltage DOVC? DOVC <,NRf> climbing Inquire the value of DC Offset Current DOCC?
  • Page 100 （Sequence） Figure 8-2 Commands Return Value Description POWER ON/OFF None Turn ON/OFF the switch of grid side. Enable/Disable the output of power OUTPUT ON/OFF None supply Return status of switch of grid side POWER:STAT? POWER:STAT,1/0 1:ON 0:OFF Return status of output of power supply OUTPUT:STAT? OUTPUT:STAT,1/0 1:ON...
  • Page 101 Set output frequency inactivated step in SEQ:FREQ <NRf> None sequence mode Set the phase of output A in activated SEQ:PHASEA <NRf> None step in sequence mode Set the amplitude of output A in SEQ: AMPA <NRf> None activated step in sequence mode Set the phase of output B in activated SEQ:PHASEB <NRf>...
  • Page 102 Inquire the amplitude of output B in SEQ:AMPB? SEQ: AMPB<,NRf> activated step in sequence mode Inquire the phase of output C have been SEQ:PHASEC? SEQ: PHASEC<,NRf> set inactivated step in sequence mode Inquire the amplitude of output C in SEQ:AMPC? SEQ: AMPC<,NRf>...
  • Page 103 Second : LAB; duration; switch time; output frequency ; the phase of output A; the amplitude of output A; the phase of output B; the amplitude of output B; the phase of output C; the amplitude of output C; the condition value; the selectioncondtion;...
  • Page 104 3. （Harmonic Setting） Figure 8-3 Commands Return Value Description Set second harmonic parameters： Harmonic order; HARM phase of a; <NRf1><,NRf2><,NRf ratio of a; 3><, None phase of b; NRf4><,NRf5><,NRf6 ratio of b; ><, NRf7> phase of c; ratio of c; Inquire 2-40 harmonic parameters：...
  • Page 105 1. （Inter Harmonic Setting） Figure 8-4 Commands Return Value Description Set inter harmonic parameters of Channel Channel； IHARM <NRf1><, NRf2><, Frequency; NRf3><, phase of a; None NRf4><,NRf5><, ratio of a; NRf6><, NRf7> ， phase of b; NRf8> ratio of b; phase of c;...
  • Page 106 Frequency; phase of a; ratio of a; phase of b; ratio of b; phase of c; ratio of c; Validate the parameters that have been IHARM APPLY None IHARM CLEAR None Clear the Inter harmonics parameters...

  • Page 107: Example

    8.3 Example 1) Query information *IDN EAC-4Q-GS-AC***-*** Firmware Versioin 1.0 Remote? 2) Set the protection value OVP 300 OVP? OVP300.00 OCP 225 OCP? OCP225.00 3) Set hardware limits LIMIT:CUR 200 LIMIT:CUR? LIMIT:CUR200.00 4) Check for faults FAULT? FAULT0 //No faults...
  • Page 108 SET:PHASEC -240 SET:AMPC 220 SET? SET50.00,0.00,220.00,-120.00,220.00,-240,220 SET APPLY POWER ON POWER:STAT? POWER:STAT1 OUTPUT ON OUTPUT:STAT? OUTPUT:STAT1 VOLT:A? VOLT:A 220.00 CUR:A? CUR:A10.00 POW:A? POW:A 2.20 7) Power up in sequence mode SEQ:LAB? SEQ:LAB1 SEQ:FREQ 50 SEQ:PHASEA 0 SEQ:AMPA 220 SEQ:PHASEB -120 SEQ:AMPB 220 SEQ:PHASEC -240 SEQ:AMPC 220...
  • Page 109 SEQ:LAB? SEQ:LAB2 SEQ:FREQ 50 SEQ:PHASEA 0 SEQ:AMPA100 SEQ:PHASEB -120 SEQ:AMPB 100 SEQ:PHASEC -240 SEQ:AMPC 100 SEQ:SWT 100 SEQ:DUT 100 SEQ:CONDSEL NONE SEQ:CONDVAL 0 SEQ:OUTPUT ON SEQ? SEQ2.00,100.00,100.00,50.00,0.00,100.00,-120.00,100.00,- 240.00,100.00,0.00,0.00,1.00 SEQ:APPLY POWER ON POWER:STAT? POWER:STAT1 OUTPUT ON OUTPUT:STAT? OUTPUT:STAT1 VOLT? VOLT*.*,*.*,*.* CUR? CUR*.*,*.*,*.* POW? POW*.*,*.*,*.*...

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