Section 9 − High Frequency (Hf); Welding Processes Requiring High Frequency; Correct Installation - Miller DYNASTY 200 DX Owner's Manual

SECTION 9 − HIGH FREQUENCY (HF)

9-1. Welding Processes Requiring High Frequency

9-2. Correct Installation

5
7
Metal Objects
And All Wiring
In Welding Zone
Using #12 AWG
Nonmetal
Building
1 HF Source (Welder With Built-In HF Or
Separate HF Unit)
Ground metal machine case, work output
terminal, line disconnect device, input
supply, and worktable.
2 Welding Zone And Centerpoint
A circle 50 ft (15 m) from centerpoint
between HF source and welding torch in all
directions.
3 Weld Output Cables
Keep cables short and close together.
4 Conduit Joint Bonding And Grounding
OM-2240 Page 58
Work
TIG
Weld Zone
50 ft
(15 m)
1
2
3
Ground All
Ground
Workpiece
Wire
If Required
By Codes
Electrically join (bond) all conduit sections
using copper straps or braided wire. Ground
conduit every 50 ft (15 m).
5 Water Pipes And Fixtures
Ground water pipes every 50 ft (15 m).
6 External Power Or Telephone Lines
Locate HF source at least 50 ft (15 m) away
from power and phone lines.
7 Grounding Rod
Consult the National Electrical Code for
specifications.
1
50 ft
(15 m)
4
7
7
10
1 High-Frequency Voltage
TIG − helps arc jump air gap
between torch and workpiece and/
or stabilize the arc.
6
8
7
Metal Building
9
8 Metal Building Panel Bonding Methods
Bolt or weld building panels together, install
copper straps or braided wire across seams,
and ground frame.
9 Windows And Doorways
Cover all windows and doorways with
grounded copper screen of not more than
1/4 in (6.4 mm) mesh.
10 Overhead Door Track
Ground the track.