Tweco 200 ACDC Arcmaster(Feb2006) - Manual (Page 21)

15
3.03.02 Input Power
Each unit incorporates an INRUSH circuit and input voltage sensing circuit. When the MAIN CIRCUIT
SWITCH is turned on, the inrush circuit provides a pre-charging of the input capacitors. SCR’s in the Power
Control Assembly (PCA) will turn on after the input capacitors have charged to full operating voltage (after
approximately 5 seconds).
Note 5
Note the available input power. Damage to the PCA could occur if 575VAC or higher is applied.
The following 208-230/460V Primary Current recommendations are required to obtain the maximum
welding current and duty cycle from this welding equipment:
Current & Duty Cycle
Model
Primary Supply
Lead Size (Factory
Fitted)
Minimum Primary
Current Circuit Size
(Vin/Amps)
TIG STICK
208/18 -
230/16 -
460/8
200 @ 20%
-
208/21 -
230/19 -
3
Phase
460/10 -
160 @ 40%
208/36 -
230/33
200 @ 20%
-
208/42 -
ArcMaster
200 ACDC
8/4 AWG minimum
1
Phase
230/38 -
160 @ 40%
Table 2 – 208-230/460V Primary Current Circuit sizes to achieve maximum current
The ARCMASTER 200 ACDC is designed for use with a generator as an input power source. Contact an
accredited Thermal Arc service agent for the proper sizing and set-up recommendations of a generator power
source system. As a general rule, depending on the type of generator used, the generator capacity should be
twice the maximum rating of the welder.