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EN
2.1.5 Connecting the cables
+
+
G
E
H
F
B
A
B
D
C
Wire feeder
control
Analog
SYN 300/400/500
DT 400
Robot
KempArc
KempCool 10
A. air hose
B. shield gas hose
C. air blow
D. intermediate cable
E. earthing cable
F. cooling liquid hoses
G. robot controller
H. cooling unit control cable
Welding and earthing cables
The welding and earthing cables are rubber-insulated copper cables. The recommended
cross-sections of the cables for dierent power source models are as follows:
Model Welding cable
SYN 300 50 ... 70 mm²
SYN 400 70 ... 90 mm²
SYN 500 70 ... 90 mm²
The table below shows the typical load capacities of the cables when the ambient
temperature is 25 °C and the lead temperature is 85 °C.
Welding cable Duty cycle (ED) Voltage loss / 10 m
100 % 60 % 30 %
50 mm² 285 A 370 A 520 A 0.35 V / 100 A
70 mm² 355 A 460 A 650 A 0.25 V / 100 A
95 mm² 430 A 560 A 790 A 0.18 V / 100 A
NOTE! Do not overload the welding cables, as an overload may cause voltage loss and
overheating.
6
KempArc SYN 300, 400, 500, DT 400 / © Kemppi Oy / 1117
8


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