Input Power; High Frequency Introduction - Thermal Arc ARCMASTER 200 TS Service Manual

Refer to figure 3-1 and:
1. Connect end of ground (GREEN/YELLOW)
conductor to a suitable ground. Use a ground-
ing method that complies with all applicable
electrical codes.
2. Connect ends of line 1 (BROWN) and line 2
(BLUE) input conductors to a de-energized line
disconnect switch.
3. Use Table 1 and Table 2 as a guide to select
line fuses for the disconnect switch.
Input Voltage
115 VAC
230 VAC
Table 3-1: Electrical Input Connections
NOTE
Fuse size is based on not more than 200 percent of
the rated input amperage of the welding power
source (Based on Article 630, National Electrical
Code).
Weiding Power Supply
Ground
Terminal
Figure 3-1: Electrical input connections
5

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. At this point
the Bus Voltages are checked and the welder is
enabled after the input capacitors have charged to
full operating voltage (after approximately 5 seconds).
NOTE
Note the available input power. Damage to the
welder could occur if 460VAC or higher is applied.
Fuse Size
40 Amps
40 Amps
Ground
Conductor
Line Disconnect
Switch
Line
Fuse
Primary
Power Cable
3 – 2
The following 115-230V Primary Current recom-
mendations are required to obtain the maximum
welding current and duty cycle from this welding
equipment:
Primary Minimum
Supply Lead Primary
Model Size Current
(Factory Circuit Size
Fitted) (Vin/Amps)
115/21
230/33
ARC
2.5mm sq13
MASTER
minimum
200TS
115/36
230/40
Table 3-2: 115-230V Primary Current Circuit sizes to
achieve maximum current
The ARC MASTER 200TS 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 gen-
erator capacity should be twice the maximum rat-
ing of the welder.
6
High Frequency Introduc-
tion
The importance of correct installation of high fre-
quency welding equipment cannot be over-empha-
sized. Interference due to high frequency initiated
or stabilized arc is almost invariably traced to
improper installation. The following information is
intended as a guide for personnel installing high
frequency welding machines.
WARNING
Explosives
The high frequency section of this machine has an
output similar to a radio transmitter. The machine
should NOT be used in the vicinity of blasting oper-
ations due to the danger of premature firing.
Computers
It is also possible that operation close to computer
installations may cause computer malfunction.
3
200TS INSTALLATION
Current & Duty Cycle
TIG STICK
85@
-
100%
200@
-
20%
85@
-
100%
160@
-
35%