INVT GD300-21-011G-2 Operation Manual Download Page 83

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Goodrive300-21 integrated machine for air compressor

Product dimension

A.3 Floor-mounting dimension (without top cover)

Bottom view

Front view

Leftside view

POWER RUN FAULT

Figure A-4 Diagram for 220V 7.5

–45kW/380V 15–90kW

Table A-4 Dimension for 220V 7.5

–45kW/380V 15–90kW (unit: mm)

Model

W1 W2

Installation

hole diameter

Screw

specification

220V 7.5

–11kW

278 265

555

180

148

380V 15

–22kW

220V 15

–18.5kW

328 315

604

190

158

380V 30

–37kW

220V 22

–45kW

404 388

812

250

160

380V 45

–90kW

A.4 Product weight and packaging dimension

Product weight

N.W(kg) G.W (kg)

Packaging dimension (mm)

220V 7.5

–11kW/380V 15–22kW

(integrated machine)

515x385x320

Summary of Contents for GD300-21-011G-2

Page 1: ...Goodrive300 21 Series Dual inverter Integrated Machine for Air Compressor...

Page 2: ...and simpler installation and commissioning procedures Given the application scenarios and actual demands of air compressor GD300 21 air compressor integrated machine can realize fast start up and sta...

Page 3: ...ioning guidelines 12 4 1 Wiring diagram of integrated machine system 12 4 2 Recommended wiring process 12 4 3 Function commissioning procedure 15 5 Function description 23 5 1 Function code instructio...

Page 4: ...onnection terminals 95 B 5 3 Wiring description 96 B 5 4 Cable description 97 B 5 5 Installation dimensions and description 98 Appendix C Communication protocol 100 C 1 Application of Modbus 100 C 1 1...

Page 5: ...ncy 97 Power factor 0 9 Power output of main inverter Output voltage V Equal to the input voltage with the deviation less than 5 Rated output current A See 1 4 Product ratings Rating output power kW S...

Page 6: ...Communication 485 One 485 communication two terminal interfaces Other Installation method Supports wall mounting and floor mounting Temperature of running environment 10 C 50 C Derating is required if...

Page 7: ...wer class 022 22kW Load type Load type G Constant torque load Voltage class Voltage class 2 AC 3PH 220V 15 240V 10 4 AC 3PH 380V 15 440V 10 1 4 Product ratings Model Rated input current of the integra...

Page 8: ...rter Rating output power kW Rated output current A Rating output power kW Rated output current A GD300 21 075G 4 146 75 150 3 6 8 GD300 21 090G 4 175 90 180 4 9 5 Note The rated input current of 15 90...

Page 9: ...am of the main circuit R S T U1 V1 W1 U2 V2 W2 Goodrive300 21 Master Fan Figure 2 1 Wiring diagram of the main circuit 2 1 2 Terminal diagram of the main circuit The terminal layout of 15 22kW 30kW 37...

Page 10: ...al of safety protection each machine must be grounded Note 1 Do not use asymmetrical motor cables Do not use asymmetrically constructed motor cable If there is a symmetrically constructed ground condu...

Page 11: ...nal GPRS CN2 Flat cable interface Connected to drive board fan control signal wire CN6 Keypad interface Reserved interface connected with keypad CN14 Touch screen interface Connected to touch screen p...

Page 12: ...gnal V to voltage signal The default is current input signal J8 Jumper terminal Corresponds to P2 P2 pressure analog signal selection I corresponds to current signal V to voltage signal The default is...

Page 13: ...J2 Optional Remote data collection terminal Figure 2 7 Wiring diagram of control circuit Note The solid line represents the recommended wiring diagram which carries the least wiring for ensuring syste...

Page 14: ...ion 485 485 RS485 communication RS485 communication terminals using the Modbus RTU protocol PE CGND PE CGND PE When select PE by J9 it can be used in connection terminal of 485 communication shielded...

Page 15: ...three LED indicators fault running power The position and display state of the indicators are illustrated as below Fault Run Power Figure 3 1 Diagram of indicator position Display state of indicators...

Page 16: ...essure Oil gas temp Auxillary temp GND 24V 3 1 CN17 PT100 PT100 AC input power 3 Motor shell grounding R S T PE Main motor M 3 Motor shell grounding Fan POWER MOTOR METER U2 V2 W2 RS485 joint control...

Page 17: ...n U2 V2 W2 ground wire through hole Through hole of optional parts cable Through hole of controlling cable Ventilation hole at the bottom of integrated machine Figure 4 2 Bottom view for 15 22kW Contr...

Page 18: ...hole Through hole of controlling cable Through hole of optional parts cable Through hole of controlling cable Fan U2 V2 W2 ground wire through hole Ground wire through hole Through hole of ground wire...

Page 19: ...cable can be routed via bottom through hole 2 Refer to B 4 3 Installation diagram of optional pedestal for floor installation layout 4 3 Function commissioning procedure It is recommended that GD300...

Page 20: ...pressor Commissioning guidelines 16 3 Click Enter to enter the working environment interface as shown in the following figure Figure 4 7 Working interface 4 Click MENU in above interface and the inter...

Page 21: ...gging procedures Step 1 Click Motor parameter setting in system configuration interface and the interface is shown as follows If the Motor type is set to Synchronous the max frequency Rated power Rate...

Page 22: ...and after recognition completes click Next and set fan motor parameter Max frequency Rated power Rated frequency Rated voltage Rated current and Rated rotation speed are required Figure 4 12 Fan motor...

Page 23: ...3 Reverse S1 S2 terminal polarities P05 02 46 External fault motor over temperature P06 03 28 Solenoid valve control output P06 04 29 Fan start stop control P05 32 2 04 P1 lower limit corresponds to v...

Page 24: ...rface Click Jog run for motor and fan to determine motor rotation direction click Load or Unload to test the action of solenoid valve Click Return to enter system configuration then click MENU to retu...

Page 25: ...idelines 21 7 Click Maintenance parameters in touch screen menu and the interface is shown as follows Figure 4 16 Maintenance parameter interface 8 Click Protection parameters in the menu and the inte...

Page 26: ...s follows Figure 4 18 Running information interface 10 After adjusting user parameter factory parameter maintenance parameter according to touch screen manual return to the working interface and click...

Page 27: ...or control SVC mode 0 for AM SM 1 SVC mode 1 for AM 2 V F control AM asynchronous motor SM synchronous motor 0 P00 01 Channel of running commands 0 Keypad the indicator is off 1 Terminal the indicator...

Page 28: ...P00 03 Max output frequency 50 00Hz P00 11 ACC time 1 0 0 3600 0s Model depended P00 12 DEC time 1 0 0 3600 0s Model depended P00 13 Running direction 0 Run at the default direction 1 Run at the oppo...

Page 29: ...st to stop 0 P01 15 Stop speed 0 00 100 00Hz 0 50Hz P01 16 Stop speed detection mode 0 Detect by the setting value of the speed determine the ramps frequency 1 Detect by the feedback value of the spee...

Page 30: ...etic saturation coefficient 3 of iron core of AM 1 0 0 100 0 57 0 P02 14 Magnetic saturation coefficient 4 of iron core of AM 1 0 0 100 0 40 0 P02 15 Rated power of SM 1 0 1 3000 0kW Model depended P0...

Page 31: ...smaller value of K indicates a bigger value of M When M 116 protection is performed after motor overload lasts for 1 hour when M 150 protection is performed after motor overload lasts for 12 minutes...

Page 32: ...mpensation coefficient of vector control 50 200 0 100 P03 08 Vector control power generation slip compensation coefficient 50 200 0 100 P03 09 Current loop proportional coefficient P 0 65535 In differ...

Page 33: ...portional gain 0 8000 300 P03 27 Speed display selection in vector control 0 Display the actual value 1 Display the set value 0 P03 28 Injected current at start 0 0 100 0 setting range 0 100 0 60 0 P0...

Page 34: ...gain of motor 1 0 0 200 0 100 0 P04 10 Low frequency oscillation control factor of motor 1 0 100 10 P04 11 High frequency oscillation control factor of motor 1 0 100 10 P04 12 Oscillation control thr...

Page 35: ...48 Fan running control signal 49 Solenoid valve control signal 50 Cooling fan control signal of main motor 51 63 Reserved 0 P05 06 Reserved P05 10 Input terminal polarity The function code is used to...

Page 36: ...g setting of P1 lower limit 0 0 P05 34 P1 upper limit 10 00V P05 35 Corresponding setting of P1 upper limit 100 0 P05 36 P1 input filter time 0 000s 10 000s 0 200s P05 37 PT1 lower limit Corresponding...

Page 37: ...P05 42 10 00V 10 00V P05 45 Corresponding setting of P2 upper limit 100 0 100 0 100 0 P05 46 P2 input filter time 0 000s 10 000s 0 200s P05 47 PT2 lower limit 0 00V P05 49 0 00V P05 48 Corresponding s...

Page 38: ...for air compressor 30 Reserved P06 05 Output terminal polarity selection The function code is used to set the polarity of output terminals When a bit is 0 the input terminal is positive when a bit is...

Page 39: ...d P12 from the keypad to the local address Note After any operation among 1 4 is complete the parameter restores to 0 The upload and download functions are not applicable to group P29 Tens place Param...

Page 40: ...Overcurrent during acceleration OC1 5 Overcurrent during deceleration OC2 6 Overcurrent during constant speed running OC3 7 Overvoltage during acceleration OV1 8 Overvoltage during deceleration OV2 9...

Page 41: ...lt LL 37 Auxiliary fan fault E_FAN 38 Phase lock failure PSF 39 43 Reserved 44 Low auxiliary pressure fault L AUP 45 Handshake failure HAnd P07 33 Running frequency at present fault 0 00Hz P07 34 Ramp...

Page 42: ...ast fault 0 P07 49 Running frequency at last fault 0 00Hz P07 50 Ramp reference frequency at 2nd last fault 0 00Hz P07 51 Output voltage at 2nd last fault 0V P07 52 Output current at 2nd last fault 0...

Page 43: ...ation 7 9 Reserved 10 Pressure setting for air compressor specific function 0 P09 01 PID reference preset through keypad 100 0 100 0 0 0 P09 02 PID feedback source 0 Analog P1 feedback 1 Reserved 2 An...

Page 44: ...on of PID feedback and reference from the PID regulator When the deviation of PID feedback and reference is 100 the integral adjuster works continuously during the time ignoring proportional and diffe...

Page 45: ...D output lower limit 100 0 P09 09 Max frequency 0 0 P09 11 Feedback offline detection value 0 0 100 0 0 0 P09 12 Feedback offline detection time 0 0 3600 0s 1 0s P09 13 PID control selection 0x00 0x11...

Page 46: ...P11 01 Frequency drop at transient power off 0 Disable 1 Enable 0 P11 02 Frequency drop rate at transient power off 0 00Hz P00 03 Max output frequency s 10 00Hz s P11 03 Overvoltage stalling protecti...

Page 47: ...ection 1 High frequency superimposition reserved 2 Pulse superimposition reserved 0 P13 02 Pull in current 1 0 0 100 0 of the motor rated current 20 0 P13 03 Pull in current 2 0 0 100 0 of the motor r...

Page 48: ...RTU 1 Even check E 8 1 for RTU 2 Odd check O 8 1 for RTU 3 No check N 8 2 for RTU 4 Even check E 8 2 for RTU 5 Odd check O 8 2 for RTU 1 P14 03 Communication response delay 0 200ms 5 P14 04 Communicat...

Page 49: ...1 is turned on if the current auxiliary pressure is still greater than the set value of P15 01 after the stop time delay P18 14 the inverter will keep running at idle frequency and stop running after...

Page 50: ...Note This value is automatically refreshed every time the device is powered on every 8 hours every time a new P15 09 value is entered P15 09 Handshake password 0 9999 Note This is used to turn on or t...

Page 51: ...nds to pressure 0 0 P18 04 When P1 input voltage is detected to be above 9 8V or below 1V it is deemed as pressure signal fault Range 0 00 10 00V 0 00V P17 20 PT1 input voltage Displays the analog inp...

Page 52: ...e signal 100 0 corresponds to the upper limit value of exhaust pressure sensor P18 04 If P18 37 1 100 corresponds to P18 38 Range 100 0 100 0 0 0 P17 24 PID feedback value Displays detection value of...

Page 53: ...Time Time Current running frequency P00 04 P18 12 0 P01 15 Sleep trigger Sleep stop Manual sleep command Load 0 0 1 1 P18 13 0 Disable 1 Automatic 2 Manual Note When sleep function is valid and unloa...

Page 54: ...re display in regular inverter mode P18 00 0 head temperature P19 12 PT1 auxiliary temperature P19 21 PT2 0 P18 04 Upper limit of pressure sensor P1 0 00 20 00Mpa It is related to actual range of pres...

Page 55: ...range 20 150 75 P18 09 Stop temperature of the fan 65 P18 10 Set temperature 75 P18 11 Lower limit of loaded running frequency P18 12 P00 04 Upper limit of running frequency Indicates the min running...

Page 56: ...ure alarm by changing BIT10 of P19 13 to 1 and emergency stop will be applied Setting range 0 00 P18 04 0 90Mpa P18 18 Alarm pressure 1 00Mpa P18 19 Pre alarm temperature When head temperature is dete...

Page 57: ...00 0 12 P18 26 Upper limit of temperature PID It is used to limit the output value of temperature PID adjustment 100 00 corresponds to the maximum output frequency P00 03 of the fan Setting range 0 0...

Page 58: ...to P18 33 Setting range 0 00 10 00V Note This value stays in current set value during restoring to factory value 3 10V P18 33 Upper limit voltage of PT2 120 C 8 10V P18 34 Auxiliary temperature protec...

Page 59: ...en auxiliary pressure protection function P19 39 is enabled and auxiliary pressure is larger than P18 41 system releases auxiliary pressure alarm by changing BIT9 of P19 14 to 1 and emergency stop wil...

Page 60: ...on five kinds of parts When the accumulated working time of the part exceeds the corresponding set value the system will release pre alarm by changing the BIT of P19 14 to 1 If set to 0 working time p...

Page 61: ...0 P18 37 1 Range 0 00 655 35Mpa P19 12 Current temperature Displays the head temperature currently detected P18 28 0 150 P17 20 20 PT1 input voltage Current temp P19 12 P18 29 P18 32 0 150 P17 22 20...

Page 62: ...ressure signal 1 Pressure signal fault 0 normal BIT13 Temperature signal 1 Temperature signal fault 0 normal BIT14 Low temperature protection 1 Low temperature alarm 0 normal BIT15 Master state 1 Run...

Page 63: ...and by 1 Run 2 Faulty 3 Emergency stop 4 Under voltage 5 Alarm 6 Sleep 7 Stop 8 Restart delay 0 P19 16 Accumulated running time of the device Range 0 65535h 0 P19 17 Accumulated loading running time 0...

Page 64: ...ge 0 00 655 35Mpa 0 00Mpa P19 21 Current auxiliary temperature It displays the auxiliary temperature value detected currently P18 28 0 150 P17 20 20 PT1 input voltage Current temp P19 12 P18 29 P18 32...

Page 65: ...nd by No load running Loading running Unloading running Sleep Loading delay P18 15 is passed Current pressure is above unloading pressure P18 05 Stop command Sleep enable P18 01 Current pressure is be...

Page 66: ...limit frequency P18 11 is lower limit value of loading running frequency P18 12 is no load frequency and P01 15 is stop speed In the figure the process instruction for A H stages are listed as below...

Page 67: ...elerating to stop The inverter is in deceleration process under normal stop command and unloading stage it changes to coast to stop mode when emergency stop or fault occur 5 3 PID commissioning PID co...

Page 68: ...rshoot which will cause system instability and oscillation The feature of oscillation caused by strong integral effect is that the feedback signal fluctuates up and down based on the reference variabl...

Page 69: ...you need to set Td to another value the setting method is similar to that for P and Ti namely set Td to 30 of the value when there is no oscillation d Empty system load perform load carrying joint de...

Page 70: ...l time Td it indicates the differential action is too strong Shorten the differential time Td to control vibration When the differential time Td is set to 0 00 namely no differential control and there...

Page 71: ...ncrease to balance the PID Example PID control on strain during unwinding 0 P09 04 Proportional gain Kp P determines the strength of the whole PID adjuster The value 100 indicates that when the differ...

Page 72: ...eedback value of the PID system is relative to the max deviation of the closed loop reference The PID regulator stops regulating in the range of deviation limit Set the function parameter properly to...

Page 73: ...Max output frequency 0 00Hz P17 23 PID reference value 100 0 100 0 0 0 P17 24 PID feedback value 100 0 100 0 0 0 5 4 Running logic of blower oil pump Special function the RO terminal is enabled when...

Page 74: ...n OV3 Overvoltage during constant speed running OC1 Overcurrent during acceleration ACC DEC is too fast The voltage of the grid is too low Inverter power is too small Load transient or exception occur...

Page 75: ...xternal device input CE RS485 communication fault Baud rate is set improperly Communication line fault Incorrect communication address Communication suffers from strong interference Set proper baud ra...

Page 76: ...Check the keypad cable to determine whether a fault occurs Check for and remove the external interference source Replace the hardware and seek maintenance services UPE Parameter upload error Keypad c...

Page 77: ...oad and ensure the load is normal Check whether control parameters are set correctly Increase the mal adjustment detection time LL Electronic underload fault The inverter reports underload pre alarm a...

Page 78: ...ture set by P18 19 Check if control parameters of the fan are set correctly Check if the fan operates normally The fan power is too small for effective cooling Check if there is lubricating oil BIT10...

Page 79: ...t maintenance BIT1 1 Part 2 needs maintenance The part 2 working hours exceeds the set time in P19 01 Stop and carry out maintenance BIT2 1 Part 3 needs maintenance The part 3 working hours exceeds th...

Page 80: ...power is too low for effective cooling BIT9 1 Auxiliary pressure alarm The actual pressure detected by P2 is larger than the alarm pressure set by P18 18 Check if pressure detection sensor is abnormal...

Page 81: ...agram for 220V 7 5 18 5kW 380V 15 37kW Table A 1 Dimensions for 220V 7 5 18 5kW 380V 15 37kW unit mm Model W1 W2 H1 H2 H3 D1 Installation hole diameter Screw specification 220V 7 5 11kW 250 210 388 37...

Page 82: ...side view POWER RUN FAULT Figure A 3 Diagram for 220V 7 5 45kW 380V 15 90kW Table A 3 Dimensions for 220V 7 5 45kW 380V 15 90kW unit mm Model W1 W2 H1 D1 D2 D3 Installation hole diameter Screw specifi...

Page 83: ...sion for 220V 7 5 45kW 380V 15 90kW unit mm Model W1 W2 H1 D1 D2 D3 Installation hole diameter Screw specification 220V 7 5 11kW 278 265 555 180 148 10 6 M5 380V 15 22kW 220V 15 18 5kW 328 315 604 190...

Page 84: ...integrated machine 38 42 725x490x410 220V 45kW 380V 90kW integrated machine 42 45 725x490x410 220V 7 5 11kW 380V 15 22kW top cover 0 7 1 310x220x35 220V 15 18 5kW 380V 30 37kW top cover 1 2 360x240x40...

Page 85: ...contactor component is available from INVT B 1 1 Unpacking inspection Please carefully check if the product package is intact before open package inspection If any question please contact the supplier...

Page 86: ...y wiring attempt would fail Step 1 Connect the cable to the bottom of the two pedestals respectively The yellow cable cable mark is FU 2 should connected to the left side while the green cable cable m...

Page 87: ...fuse pedestal B 1 4 Dimension of contactor component 35mm standard guide rail installation 35mm card rail Figure B 3 Contactor dimension unit mm M4 fixation screw 12 44 4 55 5 30 Fix this part with M4...

Page 88: ...ireless long distance data transmission function through the public operator network a Wall mounted b Rail mounted Figure B 6 ICA communication adapter B 2 1 1 Product features Reliable design Adopt W...

Page 89: ...with each device supporting 40 groups of Modbus register collection set with terminal resistor switch which is safe and reliable against interference Convenient system set up and maintenance interface...

Page 90: ...nd reconnect at offline Device working status indicator Indicates the device working status by power and network status indicators 1 The network status indicator turns off every 800ms flashes slowly i...

Page 91: ...sensitivity 107dBm interface Type Serial port One RS232 and one RS485 interfaces with built in 15kV ESD protection the serial parameters are as below Data bit 8 Stop bit 1 Checkout No checkout even p...

Page 92: ...be done under the guidance of our certified and qualified engineers Note Do not install the adpater with the power on The outline dimension of the IP00 without housing model is as follows unit mm GPRS...

Page 93: ...ration manual of ICA Series GPRS Communication Adapter B 2 4 Ordering information Item Description Order No ICA200 02 Rail mounted 11023 00091 ICA200 00 Built in the machine without housing 11023 0004...

Page 94: ...5 11kW 380V 15 22kW 335 225 1 220V 15 18 5kW 380V 30 37kW 405 285 1 220V 22 45kW 380V 45 90kW Note 1 For detailed dimension drawings see A 2 Floor mounting dimensions with top cover 2 If users select...

Page 95: ...37kW M8 16 220V 22 45kW 380V 45 90kW Pedestal 278 170 180 1 220V 7 5 11kW 380V 15 22kW 328 190 180 220V 15 18 5kW 380V 30 37kW 404 250 240 220V 22 45kW 380V 45 90kW Note 1 For detailed dimension drawi...

Page 96: ...motor Through hole of U3 V3 and W3 cable of master cooling fan Rear view of pedestal Rightside view of pedestal Contactor Terminal fixed part for guide rail Back up Figure B 12 Wiring diagram of the b...

Page 97: ...destal AC power cable Main motor cable Fan cable Figure B 14 Wiring diagram of control circuit and main circuit Note If the optional parts are not installed on the pedestal the cable length may be ina...

Page 98: ...apability Allowed power outage 5mS CE RoHS Compliant with EN61000 6 2 and EN61000 6 4 Compliant with RoHS lightning surge 1kV group pulse 2kV Static contact 4kV air discharge 8kV Environment requireme...

Page 99: ...rectly 34008 00097 Note Users can choose the optional INVT ICA200 series IoT module For details refer to section 0 B 5 2 Connection terminals Power supply terminals DB9 serial port RS485 serial port U...

Page 100: ...power supply port and DB9 serial port and the other is connected to the inverter control board terminal CN 7 TA1 TC1 P1 P1 P2 P2 PTA1 PTB1 PTA2 PTB2 S1 S2 S3 S4 S5 Y1 COM Pressure sensor interface 24...

Page 101: ...S1 terminal and COM terminal GND GND 24V 24V Figure B 17 Touch screen power supply cable diagram Note As shown in Figure B 15 the touch screen power supply interface is connected to the CN17 of inver...

Page 102: ...in total Figure B 19 Touch screen installation dimensions unit mm B 5 5 2 Cut out installation description When you want to mount the touch screen into the operation panel of the control cabinet use t...

Page 103: ...8mm Operation panel Touch screen Cut out dimensions Operation panel Step 2 Insert the metal snap fits into the back top and bottom mounting jacks of the touch screen insert the fastening screws attach...

Page 104: ...e Baud rate Max transmission distance 2400BPS 1800m 9600BPS 800m 4800BPS 1200m 19200BPS 600m In long distance RS485 communication it is recommended that you use shielded cables and use the shielding l...

Page 105: ...ith the MSB on the left and LSB on the right The MSB ranges from 00 to ffH and the LSB also ranges from 00 to ffH The MSB is the hexadecimal form of the group number before the dot mark and LSB is tha...

Page 106: ...que 0 3000 in which 1000 corresponds to 100 0 of the motor rated current R W 2008H Braking torque upper limit 0 3000 in which 1000 corresponds to 100 0 of the inverter rated current R W 2009H Special...

Page 107: ...g 0 Solenoid valve unloading R W 2010H Maintenance set time of part 1 range 0 65535 W 2011H Maintenance set time of part 2 range 0 65535 W 2012H Maintenance set time of part 3 range 0 65535 W 2013H Ma...

Page 108: ...e alarm upon overload 1 overload pre alarm Bit5 Bit6 00 Keypad control 01 terminal control 10 Communication control R Inverter fault code 2102H See the description of fault types R Inverter identifica...

Page 109: ...f the upper computer is not allowed In particular the combination of the register address and the number of the to be sent bytes is invalid 03H Invalid data value The received data domain contains a v...

Page 110: ...esponse the slave returns the corresponding function code and data address or sub function code In an exception response the slave returns a code that is equal to a normal code but the first bit is lo...

Page 111: ...erter is started the display of all kinds of meters such as frequency meter and current meter that are connected to the analog output AO terminal of the inverter is severely affected displaying the va...

Page 112: ...tor on each end Solution Check and ensure that the ground wire of the motor is connected to the PE terminal of the inverter if the ground wire of the motor has been connected to the ground block you n...

Page 113: ...tive device RCD is used to detect the power frequency leakage current when a grounding fault occurs on a circuit The application of a inverter may cause misoperation of a RCD Rules for selecting RCDs...

Page 114: ...nt on differing motor parameters is conducted step by step in which the first two steps is to measure the resistance of motor stator rotor while the inverter will output square wave to motor stator wi...

Page 115: ...202104 V1 6 66001 00485...

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