INSTALLATION | ||
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| FIGURE A.1 - CONNECTION DIAGRAM ON CONNECTION/INPUT ACCESS DOOR |
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INPUT SUPPLY CONNECTION DIAGRAM
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Disconnect input power before inspecting or servicing machine.
Do not operate with covers removed.
Do not touch electrically live parts.
Only qualified persons should install, use or service this equipment.
W / L3 |
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V / L2 | CR1 |
U / L1 |
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THE LINCOLN ELECTRIC CO. CLEVELAND, OHIO U.S.A.
XA
S24190
NOTE: Turn main input power to the machine OFF before performing connection procedure. Failure to do so will result in damage to the machine.
INPUT CONNECTION
WARNING
Only a qualified electrician should connect the input leads to the
Power Wave 455M (CE). Connections should be made in accordance with all local and
national electrical codes and the connection dia- gram located on the inside of the reconnect/input access door of the machine. Failure to do so may result in bodily injury or death.
Use a
inside of the input access door or refer to Figure A.1.
INPUT FUSE AND SUPPLY WIRE CONSIDERATIONS
Refer to the Technical Specifications at the beginning of this Installation section for recommended fuse and
wire sizes. Fuse the input circuit with the recommend- ed super lag fuse or delay type breakers (also called “inverse time” or “thermal/magnetic” circuit breakers). Choose an input and grounding wire size according to local or national electrical codes. Using fuses or circuit breakers smaller than recommended may result in “nuisance”
Connect a work lead of sufficient size and length (Per Table 1) between the proper output terminal on the power source and the work. Be sure the connection to the work makes tight
Minimum work and electrode cable sizes are as follows:
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| TABLE A.1 |
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Current (60% Duty Cycle) | MINIMUM COPPER | ||
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| WORK CABLE SIZE AWG | |
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| Up | |
Length) | 400 Amps | 85 mm2 | 67 mm2 (2/0) |
| 500 Amps | (3/0) | |
| 600 Amps | 85 mm2 | (3/0) |
NOTE: K1796 coaxial welding cable is recommended to reduce the cable inductance in long cable lengths. This is especially important when Pulse welding up to 350 amps.
CAUTION
When using inverter type power sources like the Power Waves, use the largest welding (electrode and work) cables that are practical. At least 67 mm2 2/0 copper wire - even if the average output current would not normally require it. When pulsing, the pulse current can reach very high levels. Voltage drops can become excessive, leading to poor weld- ing characteristics, if undersized welding cables are used.
POWER WAVE 455M (CE)