Operation Manual

2.1.5 Connecting the cables

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.