Lincoln Electric IM915 POWER FEED 10M SINGLE WIRE FEEDER - Manual (Page 11)

A-3 INSTALLATION
POWER FEED ® 10M SINGLE WIRE FEEDER
A-3
Excessive voltage drops caused by poor work
piece connections often result in unsatisfactory
welding performance.
------------------------------------------------------------------------
COAXIAL WELD CABLES
Coaxial welding cables are specially designed welding
cables for STT™ and pulse welding. Coaxial weld
cables feature low inductance, allowing fast changes
in the weld current. Regular cables have a higher
inductance which may distort the STT™ waveshape.
Inductance becomes more severe as the weld cables
become longer.
Coaxial weld cables are recommended for STT™
welding, especially when the total weld cable length
(electrode cable + work cable) exceeds 50 feet (7.6m)
A coaxial weld cable is constructed with multiple small
leads wrapped around one large lead. The large inner
lead connects to the electrode stud on the power
source and the electrode connection on the wire feed-
er. The small leads combine together to form the
work lead, one end attached to the power source and
the other end to the work piece.
CAUTION
Amperes
250
300
350
Percent
Duty
Cycle
100
60
60
75 to 100 Ft.
23 to 31 m
1
1/0
--
50 to 75 Ft.
15 to 23 m
1
1
--
25 to 50Ft.
8 to 15 m
1
1
1/0
0 to 25 Ft.
0 to 8 m
1
1
1/0
RECOMMENDED CABLE SIZES (RUBBER COVERED COPPER - RATED 75°C)**
COAXIAL CABLE LENGTH
TABLE A.2
** Tabled values are for operation at ambient temperatures of 40°C and below. Applications above 40°C may require cables larger than rec-
ommended, or cables rated higher than 75°C.
WORK
ELECTRODE
ELECTRODE
WORK
COAXIAL WELD CABLE
POWER SOURCE
WORK
ELECTRODE
WIRE FEEDER
To install: (See Figure A.2)
1. Turn the input power off at the welding power
source.
2. Connect one end of the center lead to the power
source electrode connection, and the other end to
the wire feeder electrode connection.
3. Connect the outer lead bundle to the power
source work connection, and the other end to the
work piece. Minimize the length of any work lead
extension for best results.
4. Insulate all connections.
FIGURE A.2