Resistance Welder High-reliability Inverter Model NRW-IN900P

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.

Specifications

Resistance Welding Power Supplies Specifications

Item	NRW-IN900P
Control Frequency	Selectable from 2kHz、4kHz、5kHz (Select for each PRG No.)
Control Mode	Primary 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 Current	900A(Duty Cycle 5%)
Range of Timer Setting	Nomal 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 Conditions	Normal mode: 255 Pulsasion mode: 15
Welding Waveform Setting	Normal 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 Function	Average value/peas value monitor of current, voltage, power resistance respectively. Pulse width, welding time monitor, phase monitor, Source voltage monitor. Waveform display
Cooling Method	Water cooling (Volume of water 3.0ℓ/min)
Interface	Ethernet
Power Source	220V:3φ AC200-240V±10% 50/60Hz、400V:3φ AC380-480V±10% 50/60Hz
Dimensions(mm)	W250×D651×H428(Excluding protrusions)
Weight	30.4kg
Welding Transformer	NT-IN32K444

Resistance Welding Transformer Specifications

Item	NT-IN32K444
Power Source	220V	400V
Maximam Welding Current	19800A(Duty Cycle 5%)	32000A(Duty Cycle 5%)
Rated Capacity (Duty Cycle 50%)	89 kVA	130 kVA
Primary Input Voltage	300V	600V
Secondary Open Circuit Voltage	14.1V	12.9V
Transformer Turns Ratio	22:1	44:1
Input Frequency	2kHz/4kHz/5kHz
Cooling Method	Water Cooling 3.0ℓ/min
Dimensions(mm)	W280×D475×H330(Excluding Protrusions)
Weight	43.2kg

Options