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Resistance Welder High-reliability Inverter Model NRW-IN900P

NRW-IN900P/NT-32K444

Resistance Welder High-reliability Inverter Model NRW-IN900P

Inverter type resistance welder NRW-900P contributes to improving welding quality of fusing of motors, etc.

Pulsation mode with up to 8 phases and up to 24 seconds of welding and 127-step arbitrary waveform function support various fusing applications.

Newly equipped with weld time monitor and phase monitor, it supports the operation of in-welding compensation function and contributes to the improvement of welding quality

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Features

  • High capacity with a maximum current of 32000A (When NT-IN32K444 at 400V)
  • Long welding time of maximum 5 seconds, 127step arbitrary waveform (freestyle) function (normal mode)
  • Pulsation mode suitable for fusing
    Pulsation operation of up to 8 phases with UP and DOWN slopes for 24 seconds is available.
    Contributes to a wide variety of fusing welding.
  • Welding stop with variation of 1ms or less by the phase shift function
  • Three selectable frequencies (2kHz, 4kHz, 5kHz)
  • Equipped with multiple control mode.
    Constant current, constant voltage, constant power, primary current peak value, primary current average, and fixed pulse width output control modes are provided.
  • Built-in welding monitor function
    In addition to the average and peak values of current, voltage, power, and resistance, and limit monitor judgment results, the new weld time monitor and phase monitor enables compensation function during welding.
  • Welding waveform display function
    It is effective in improving work efficiency in setting welding conditions and investigating the cause of abnormalities.
  • Supporting automated machine
    Analog input control mode enables real-time control from a PLC. Combined with a temperature sensor, constant temperature control is also possible.
    In addition, the program box enables remote control, which allows for greater flexibility in layout when incorporated into facilities.
  • Compensation function during welding
    Output value can be changed instantaneously by external signal input during the welding.
    It can be used in combination with displacement sensors, etc., to improve the finishing level.

Application example

Fusing of round terminals and coated wires
Motor coil
Copper busbar

Specifications

Resistance Welding Power Supplies Specifications

ItemNRW-IN900P
Control FrequencySelectable from 2kHz、4kHz、5kHz (Select for each PRG No.)
Control ModePrimary current peak value control, Primary current average value control, Secondary current avarage value control, Secondary voltage avarage value control, Secondary power avarage value control, Fixed pulse width control.
Maximum Welding Current900A(Duty Cycle 5%)
Range of Timer SettingNomal mode: 0.0-5000.0ms(Total of UP TIME、WELD TIME、DOWN TIME、COOL TIME)
Pulsasion mode: 0.0-24000.0ms(Total of PULSE TIME、COOL TIME)
Number of ConditionsNormal mode: 255
Pulsasion mode: 15
Welding Waveform SettingNormal mode: 3-phase(slope、weld、cool)、free style(Max. 127 step、8-phase)
Pulsasion mode: (Max. 120 wave、10000 pulse、8-phase)
Analog input control mode: (8-phase)
User Interface(Setting Tool)Program box
Monitoring FunctionAverage value/peas value monitor of current, voltage, power resistance respectively.
Pulse width, welding time monitor, phase monitor, Source voltage monitor.
Waveform display
Cooling MethodWater cooling (Volume of water 3.0ℓ/min)
InterfaceEthernet
Power Source220V:3φ AC200-240V±10% 50/60Hz、400V:3φ AC380-480V±10% 50/60Hz
Dimensions(mm)W250×D651×H428(Excluding protrusions)
Weight30.4kg
Welding TransformerNT-IN32K444

Resistance Welding Transformer Specifications

ItemNT-IN32K444
Power Source220V400V
Maximam Welding Current19800A(Duty Cycle 5%)32000A(Duty Cycle 5%)
Rated Capacity (Duty Cycle 50%)89 kVA130 kVA
Primary Input Voltage300V600V
Secondary Open Circuit Voltage14.1V12.9V
Transformer Turns Ratio22:144:1
Input Frequency2kHz/4kHz/5kHz
Cooling MethodWater Cooling 3.0ℓ/min
Dimensions(mm)W280×D475×H330(Excluding Protrusions)
Weight43.2kg

Options

Program Box NA-PB100

Easy installation to automatic machines
The program box enables you remote control. Facility design becomes easier.

Welding Monitor QC-450

Built-in welding monitor function
In addition to the average and peak values of current, voltage, power, and resistance, and limit monitor judgment results, the new weld time monitor and phase monitor enables compensation function during welding.

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