Issued August 2007 • Index No. AY/5.0
High-Frequency Arc
Starter and Stabilizer
HF-251
Industrial/Light Industrial Applications
Processes
Gas Tungsten Arc
Welding (TIG)
Input Power 1-Phase Power
General Manufacturing
Tool and Die
Quick
Rated Output 250 A, 60% Duty Cycle
Repair Shops
Weight HF-251D-1: 34 lb (15 kg)
Specs
All-Purpose Maintenance
HF-251-2: 36 lb (16 kg)
®
The Power of Blue.
The HF-251 is compatible with power
sources made by other manufacturers.
For use with power sources with 14-socket
receptacle (5-socket adapter available).
Power on/off switch with pilot light.
Start, off and continuous control.
Gas solenoid valve.
Increase the flexibility and performance
of most AC, DC or AC/DC constant-current
welding machines with these portable
high-frequency arc starters and stabilizers.
The unit impresses high frequency on the
welding circuit and provides the arc control
needed for TIG welding.
High-frequency intensity control.
Built-in postflow eliminates
contamination.
With the addition of an HF unit,
your constant-current power source
can handle welds on aluminum,
magnesium, thin stainless steel,
brass, copper and a wide variety of
both ferrous and non-ferrous alloys.
Protected secondary terminal.
Convenient, portable design can be
easily moved from location to location.
14-pin receptacle on front panel for
remote controls.
Two versions (115 VAC, 50/60/100 Hz
and 230 VAC, 50/60 Hz) meet most
single-phase power configurations, and
all are rated at 60% duty cycle.
Specifications
(Subject to change without notice.)
Model
Input Volts
Rated Output at 60% Duty Cycle
Dimensions
Net Weight
HF-251D-1
HF-251-2
115 VAC, 50/60/100 Hz
230 VAC, 50/60 Hz
250 A
H: 13 in (330 mm)
W: 9-1/4 in (235 mm)
D: 16 in (406 mm)
34 lb (15 kg)
36 lb (16 kg)
Warranted for 1 year, parts and labor.
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 West Spencer Street
Appleton, WI 54914 USA
International Headquarters Web Site
Phone: 920-735-4505
USA FAX: 920-735-4134
Canadian FAX: 920-735-4169
International FAX: 920-735-4125
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