Lincoln Electric VANTAGE 520 SD Operator's Manual page 15

VANTAGE ® 520 SD
• Loose connections will cause the output terminals to over-
heat. The terminals may eventually melt.
• Do not cross the welding cables at the output terminal con-
nection. Keep the cables isolated and separate from one
another.
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MACHINE GROUNDING
Because this portable engine driven welder creates its own power, it is
not necessary to connect its frame to an earth ground, unless the
machine is connected to premises wiring (home, shop, etc.).
To prevent dangerous electric shock, other equipment powered by this
engine driven welder must:
a) be grounded to the frame of the welder using a grounded type
plug, or
b) be double insulated.
When this welder is mounted on a truck or trailer, its frame must be securely
connected to the metal frame of the vehicle. When this engine driven welder is
connected to premises wiring such as that in a home or shop, its frame must
be connected to the system earth ground. See further connection instructions
in the section entitled "Standby Power Connections" as well as the article on
grounding in the latest National Electrical Code and the local codes.
In general, if the machine is to be grounded, it should be connected
with a #8 or larger copper wire to a solid earth ground such as a metal
ground stake going into the ground for at least 10Ft.(3.1m) or to the
metal framework of a building which has been effectively grounded.
The National Electric Code lists a number of alternate means of
grounding electrical equipment. A machine grounding stud marked
with the symbol is provided on the front of the welder.
AUXILIARY POWER RECEPTACLES
Start the engine and set the "IDLE/RUN/STOP" switch to the "High
Idle" mode. Voltage is now correct at the receptacles for auxiliary
power. This must be done before a tripped GFCI can be reset properly.
See the MAINTENANCE section for more detailed information on test-
ing and resetting the GFCI. (For location of receptacles see Figure A.3)
The auxiliary power of the VANTAGE
Amp-120 VAC (5-20R) duplex receptacles with GFCI protection, one
50 Amp 120/240 VAC (14-50R) receptacle and one 50 Amp 240VAC
Three-Phase (15-50R) receptacle.
The auxiliary power capacity is 11,000 Watts Continuous of 60 Hz,
single phase power. The auxiliary power capacity rating in watts is
equivalent to volt-amperes at unity power factor. The max permissible
current of the 240 VAC output is 50amps.
The 240 VAC output can be split to provide two separate 120 VAC out-
puts with a max permissible current of 50 Amps per output to two sep-
arate 120 VAC branch circuits (these circuits cannot be paralleled).
Output voltage is within ± 10% at all loads up to rated capacity.
The Three-Phases auxiliary power capacity is 17,000 watts continu-
ous. The maximum current is 40 amps.
CAUTION
® 520 SD consists of two 20
FIGURE A.3
AUXILIARY POWER RECEPTACLES
240 VAC THREE
PHASE RECEPTACLE
120/240 VAC SINGLE
PHASE RECEPTACLE
120 V DUPLEX RECEPTACLES AND GFCI
A GFCI protects the two 120V auxiliary power receptacles.
A GFCI (Ground Fault Circuit Interrupter) is a device to protect against
electric shock should a piece of defective equipment connected to it
develop a ground fault. If this situation should occur, the GFCI will trip,
removing voltage from the output of the receptacle. If a GFCI is tripped
see the MAINTENANCE section for detailed information on testing and
resetting it. A GFCI should be properly tested at least once every month.
The 120 V auxiliary power receptacles should only be used with three
wire grounded type plugs or approved double insulated tools with two
wire plugs. The current rating of any plug used with the system must
be at least equal to the current capacity of the associated receptacle.
NOTE: The 240 V receptacle has two 120 V circuits, but are of oppo-
site polarities and cannot be paralleled.
All auxiliary power is protected by circuit breakers. The 120V has 20 Amp
circuit breakers for each duplex receptacle. The 120/240V Single Phase
and the 240V Three-Phases have a 50 Amp 3-pole Circuit Breaker that
disconnects both hot leads and all Three Phases simultaneously.
A-7
INSTALLATION
120 V RECEPTACLE
20A 120V
AUXILIARY BREAKERS
50A 240V THREE
POLE BREAKER