For DC spot welding/fusing: IS-300A
- ◆Compact and 1.5 times higher output than that of the conventional model IS-120B.
- ◆Detailed weld schedules can be set.
◆Transformer selecting function-
Six control types
You can choose from; "Primary constant-current RMS," "Secondary constant-current RMS," "Secondary constant-power RMS," "Primary constant-current PEAK control," or "Constant-phase" to attain stable welding quality. -
Different setting can be set at each welding.
Pulsation, Upslope, Downslope and Weld stop. -
Power supply voltage fluctuation compensation control (effective when PULSE LIMIT is set)
The pulse limit is corrected according to the fluctuation in the power-supply voltage on the primary side.
This function is valid only in the primary constant-current PEAK control mode (PLM).
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Up to five transformers can be connected with IS-300A by an optional MA-650A the transformer selector.
This function contributes to the improvement in productivity.- ◆Interrupt feature
Interrupt feature functions when a displacement amount reaches up to set level and stops current to obtain more stable fusing. For this feature, it needs to be connected with a weld checker with a built-in displacement monitor and set a displacement amount of electrodes beforehand. - ◆Program unit MA-660A (Sold Separately)
Employing an easily viewable color LCD. Current, voltage, or power can be monitored. - ◆Multilingual software
You can select the language from Japanese, English, Chinese, and Korean. - ◆Samples
| Model | IS-300A-00-00 | IS-300A-00-01 | |
| Power requirements (Fixed at ex-factory) | 3-phase, 200–240 VAC ±10% (50/60 Hz) |
3-phase, 380–480 VAC ±10% (50/60 Hz) |
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| Max. output current | 300A (Peak value) | ||
| Number of schedules | 255 | ||
| Output frequency | 600Hz～3kHz (In 100 Hz increments) | ||
| Control method | Primary constant-current RMS Secondary constant-current RMS Secondary constant-power RMS Primary constant-current PEAK (with pulse width limit funcution) Secondary constant-voltage RMS Constant-phase control |
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| Timer setting range | msec mode / cyc mode | ||
| SQUEEZE DELAY | 0000～9999ms / 000～999cyc | ||
| SQUEEZE | 0000～9999ms / 000～999cyc | ||
| UP SLOPE 1,2,3 | 000～999ms / 00～50cyc | ||
| WELD 1,2,3 | 000～999ms / 00～50cyc | ||
| DOWN SLOPE 1,2,3 | 000～999ms / 00～50cyc | ||
| COOL 1,2 | 000～999ms / 000～999cyc | ||
| HOLD | 00000～20000ms / 000～999cyc | ||
| OFF *1 | 0 or 0010～9990ms / 00～99cyc | ||
| Transformer turns ratio | 1.0～199.9 | ||
| Pulsation setting | 01～19 | ||
| Valve setting | 2 | ||
| Setting range (1)Constant current *2 (2)Constant power (3)Constant voltage (4)Constant phase |
(1)0.1～20.0kA (2)0.1～20.0kW (3)0.20～9.99V (4)10.0～99.9% |
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| Current monitor | 00.0～99.9kA / 0.00～9.99kA | ||
| Power monitor | 000.0～999.9kW / 00.00～99.99kW | ||
| Voltage monitor | 0.00～9.99V | ||
| Pulse width monitor | HIGH 10.0～100% | ||
| Cooling method | Forced air-cooling | ||
| Data communication | RS-232C (One-way communication) / RS-485 (Bidirectional communication) |
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| Operating environment | Ambient temperature | +5～+40℃ | |
| Humidity | 90% max. (no condensation) | ||
| Altitude | 1000m max. | ||
| Weight | 16.5kg | ||
- *1: No repetitive operation will be performed if “0” is selected for OFF (off time).
- *2: Primary current can be set up to 300 A.
| Model | ITH-651C6W | ITI-875A6W | SIT-F241-HC |
| Rated capacity | 26.8kVA | 37.1kVA | 75kVA (50%) |
| Rated primary voltage | 300V/600V | 300V | |
| No-load secondary voltage | 9.3V | 12.5V | 11.7V |
| Transformer turns ratio | 32:1/64:1 | 24:1/48:1 | 24:1 |
| Input frequency | 1kHz | ||
| Maximum welding current | 7000A | 7000A | 14400A |
| Duty cycle | 8.5% | 9% | 10% |
| Fan voltage | DC24V | ‐ | |
| Cooling method | Forced air-cooled | ||
| Weight | 16kg | 19kg | 35kg |
| Outline dimensions (mm) * | 168(W) x 398(D) x 199(H) | 168(W) x 446(D) x 199(H) | 180(W) x 495(D) x 240(H) |
* Include projections