KSI 700 / KSI 1000 inverter power sources for submerged arc welding 40–1000 A
Country: Germany · Model: KSI 700 / KSI 1000
The KSI 700 and KSI 1000 are inverter power sources for submerged arc welding (SAW) at 40–750 and 80–1000 A. Two KSI 1000 units connected in parallel give up to 2000 A. They are used with welding tractors and KA series heads, and in robotic systems.
- Welding current
- KSI 700: 40–750 A; KSI 1000: 80–1000 A (2 in parallel: up to 2000 A)
- Arc voltage
- 20–44 V (KSI 700), 18–44 V (KSI 1000)
- Duty cycle 100 % (40 °C)
- 750 A / 44 V (KSI 700); 1000 A / 44 V (KSI 1000)
- No-load voltage
- 83 V (KSI 700)
Technical specifications
| Welding current | KSI 700: 40–750 A; KSI 1000: 80–1000 A (2 in parallel: up to 2000 A) |
|---|---|
| Arc voltage | 20–44 V (KSI 700), 18–44 V (KSI 1000) |
| Duty cycle 100 % (40 °C) | 750 A / 44 V (KSI 700); 1000 A / 44 V (KSI 1000) |
| No-load voltage | 83 V (KSI 700) |
| Mains | 3/PE AC 400 V ±10 %, 50/60 Hz |
| Power consumption (duty cycle 100 %) | 39.4 kVA (KSI 700); 51.5 kVA (KSI 1000) |
| Fuse | 63 A (KSI 700); 125 A, possibly 80/100 A (KSI 1000) |
| Efficiency | 90 % at 1000 A / 44 V (KSI 1000) |
| Standby consumption | 44 W (KSI 1000) |
| Characteristics | CC and CV |
| Processes | submerged arc welding (SAW); KSI 700: optionally MMA and gouging |
| Auxiliary output | 42 V AC / 10 A for welding tractors |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
Both sources have drooping (CC) and constant-voltage (CV) characteristics. The KSI 700 gives 40–750 A at 20–44 V DC, with a no-load voltage of 83 V and a 100 % duty cycle at 750 A / 44 V and 40 °C. Mains 3/PE AC 400 V ±10 %, 50/60 Hz, power consumption 39.4 kVA, time-delay fuse 63 A. Optionally it welds with a coated electrode (MMA) and performs air carbon arc gouging. The KSI 1000 delivers 80–1000 A at 18–44 V DC, with a 100 % duty cycle at 1000 A / 44 V and 40 °C, consumes 51.5 kVA and requires a 125 A fuse (80 or 100 A is permitted). Efficiency is 90 % at 1000 A / 44 V, and in standby the source draws 44 W. An auxiliary output of 42 V AC / 10 A is provided to power tractors.
How to choose
Current is calculated first. Up to 750 A the KSI 700 is enough, and above that the KSI 1000 is taken, and two such units in parallel give 2000 A. The mains is 400 V for both, but the KSI 1000 consumes 51.5 kVA against 39.4 kVA. The KSI 700 is chosen when MMA or gouging is also wanted from one source. If a classic rectifier is needed, there are the GTH 802, GTH 1202 and the W 1005 VC transformer. For a robotic cell there is the SAW Cobot.
Request a price and lead time
KSI 700 / KSI 1000 inverter power sources for submerged arc welding 40–1000 A. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What current does the KSI 1000 give and can two units be connected?
The range is 80–1000 A, and two units connected in parallel give up to 2000 A.
What mains supply does the KSI 700 need?
3/PE AC 400 V ±10 %, 50/60 Hz. Power consumption at a 100 % duty cycle is 39.4 kVA, fuse 63 A.
Can the KSI 700 weld with a coated electrode?
Yes, MMA and air carbon arc gouging are available as options.
What is the efficiency of the KSI 1000?
90 % at 1000 A / 44 V, and in standby it consumes 44 W.
How is a welding tractor powered from this source?
From the auxiliary output of 42 V AC / 10 A.
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