Lincoln Electric IM703-A manual Additional Output Capacity, Recommended Input Wire and Fuse Sizes

A-2			INSTALLATION		A-2
		RATED OUTPUT - IEC 60974-1 (K1834-1)
		Duty Cycle-Applications
				Volts at Rated Amperes	Amps
	40%
		AC/DC Stick / Balance TIG		35.0	375
	Unbalance (70% Penetration#) AC TIG			24.0	350
	60%
		AC/DC Stick / Balance TIG		34.0	350
	Unbalance (70% Penetration#) AC TIG			23.0	325
	100%
		AC/DC Stick / Balance TIG		32.0	300
	Unbalance (70% Penetration#) AC TIG			21.0	275

ADDITIONAL OUTPUT CAPACITY

Output Current

Range

2Amps DC

to

420Amps AC-DC*

Maximum Open

Circuit Voltage

(STICK AND TIG)

AC/DC OCV: 80

Type of Output

CC(Constant Current) AC/DC (GTAW) Stick (SMAW)

Auxiliary Power

K1903-1, K1833-1, K1833-2

15Amp Circuit Breaker and NEMA 5-15R Duplex

Receptacle for up to:

115VAC 8 Amp Auxiliary Power Receptacle

115VAC 5 Amp weld Switched Cooler Receptacle

K1834-1

5 Amp Circuit Breaker and grounded 220VAC Euro(Schuko) receptacle

		RECOMMENDED INPUT WIRE AND FUSE SIZES
	For all Stick, DC TIG, and Balanced AC TIG Welding
					For Unbalanced AC TIG Welding Above 275 Amps:
	at 375A/40% Duty Cycle with out Standard Power				350A/40% Duty Cycle, Auto-Balance Penetration with
		Factor Correction Capacitors			out Standard Power Factor Correction Capacitors
	Based on the 1999 U.S. National Electrical Code				Based on the 1999 U.S. National Electrical Code
		Input	Type 75°C	Type 75°C			Type 75°C	Type 75°C
Input	Fuse	Ampere	Copper Wire in	Copper	Fuse	Input	Copper Wire in	Copper
Voltage /	(Super Lag)	Rating	Conduit AWG	Ground Wire in	(Super Lag)	Ampere	Conduit AWG	Ground Wire in
phase/	or Breaker	Rating on	(IEC) Sizes	Conduit AWG	or Breaker	Rating	(IEC) Sizes	Conduit AWG
			40°C (104°F)				40°C (104°F)
Frequency	Size1	Nameplate	Ambient	(IEC) Sizes	Size1		Ambient	(IEC) Sizes
208/1/60	150	112	3 (26.7 mm2)	6 (13.3 mm2)	200	139	1 (42.4 mm2)	6 (13.3 mm2)
230/1/60	150	102	3 (26.7 mm2)	6 (13.3 mm2)	175	126	2 (33.6 mm2)	6 (13.3 mm2)
460/1/60	80	51	6 (13.3mm2)	8 (8.4 mm2)	80	63	6 (13.3 mm2)	8 (8.4 mm2)
575/1/60	50	41	8 (8.4 mm2)	10 (5.3mm2)	70	50	6 (13.3 mm2)	8 (8.4 mm2)
220-230/1/50/60	150	119	3 (26.7 mm2)	6 (13.3 mm2)	150	118	3 (26.7 mm2)	6 (13.3 mm2)
380-400/1/50/60	110	69	4 (21.2 mm2)	6 (13.3 mm2)	110	68	4 (21.2 mm2)	6 (13.3 mm2)
415/1/50/60	110	63	4 (21.2 mm2)	6 (13.3 mm2)	110	62	4 (21.2 mm2)	6 (13.3 mm2)

PHYSICAL DIMENSIONS

	Height	Width	Depth	Weight
K1833-1, -2
	31.0 in.	22.0 in.	26.0 in.	507 lbs.
K1834-1
	787 mm	559 mm	660 mm	230 kgs.
K1903-1	49.7 in.	28.0 in.	41.0 in.	751 lbs.
	1262 mm	711 mm	1041 mm	341 kgs.

TEMPERATURE RANGES

OPERATING TEMPERATURE RANGE

-20°C to +40°C (-04° to +104°F)

STORAGE TEMPERATURE RANGE

-40°C to +85°C (-40° to +185°F)

TRANSFORMER INSULATION CLASS 180°C (H)

1ALSO CALLED ‘INVERSE TIME" OR "THERMAL/MAGNETIC " CIRCUIT BREAKERS; CIRCUIT BREAKERS WHICH HAVE A DELAY IN TRIPPING ACTION THAT DECREASES AS THE MAGNITUDE OF CURRENT INCREASES.

*50/60HZ IEC Max. range exceeds 310A.

PRECISION TIG 375