Miller Electric CST 280 manual Control Panel, Performance Data

Specifications (Subject to change without notice.)

				Welding	Max. Open-
	Welding	Input		Amperage	Circuit	Amps Input at Rated Load Output, 50/60 Hz,									Dimensions	Net
Description	Mode	Power	Rated Output	Range	Voltage	208 V	220 V	230 V	400 V	440 V	460 V	575 V	KVA	KW		Weight
CST-280,	Stick	3-Phase	280 A at 31.2 V,	5 – 280 A	77 VDC	—	35	34.2	—	—	17.8	14.7	14.6	10.2	H: 13-1/2 in	41 lb
220-230/460-	(SMAW)		35% Duty Cycle												(343 mm)	(18.6 kg)
575 Dinse															W: 7-1/2 in
	TIG		200 A at 28 V,			—	23.3	22.5	—	—	11.7	9.7	9.6	6.4
															(191 mm)
CST-280,	(GTAW)		100% Duty Cycle
															D: 18 in
220-230/460-		1-Phase	200 A at 28 V,	5 – 200 A		—	43.9	43	—	—	—	—	10.1	6.6
															(457 mm)
575 Tweco			50% Duty Cycle*
			150 A at 26 V,			—	32.7	32	—	—	—	—	7.3	4.6
			100% Duty Cycle*
CST-280,	Stick	3-Phase	280 A at 31.2 V,	5 – 280 A	67 VDC	36	33	22.8	19.8	18	17.5	—	14	10.2	H: 13-1/2 in	41 lb
208-230/400-	(SMAW)		35% Duty Cycle												(343 mm)	(18.6 kg)
460 Dinse	TIG		200 A at 28 V,			23.5	23	22.8	13.5	12	12.7	—	10.2	6.9	W: 7-1/2 in
															(191 mm)
CST-280,	(GTAW)		100% Duty Cycle
															D: 18 in
208-230/400-		1-Phase	200 A at 28 V,	5 – 200 A		43.9	43.3	43	—	—	—	—	9.9	6.5
															(457 mm)
460 Tweco			50% Duty Cycle*
			150 A at 26 V,			35	—	32.9	—	—	—	—	7.6	4.8
			100% Duty Cycle*

*Output ratings on 230 V single-phase are reduced to comply with CSA current limitation on input power cable.

CSA approval. 1P23M approval.

Control Panel

1. Output Light 1

2.On/Off Switch

3.Weld Process Selector Switch

4.Overtemp Light

5.Amperage Adjustment Control (5 – 280 Amps)

2

3

Performance Data

OFF

ON

POWER

4

									125	150
									100	175
				X18
			X							200
		E		STIFF
	K
	IC				S				75
S	T	T					S			5
	F				O			T
						T C
					F			I
	S							K		225
T							S	E	50
								X
G
I							T	X
™
C						F	I	1
R					F			0		250
	A
	F
	-
	T								25
		I
		L
									5	280
PROCESS SELECT									AMP ADJUST
CST 280
									MILLER ELECTRIC MFG. CO. APPLETON, WI

DUTY CYCLE CHART

	300
	3-Phase Operation
	250
AMPERES	200		1-Phase Operation
	150
OUTPUT	100
	50
	0
	10	20	30	40	50	60	70	80	90	100

% DUTY CYCLE

VOLT/AMP CURVE AT 150 AMPS

	100
	90
	80
	70			Setpoint
VOLTAGE	60		XX18	150 Amps
	50		TIG
	40		XX10
	30
					XX18
	20				Soft
	10			TIG	XX18 Stiff,
	0				XX10 Soft	XX10 Stiff
	0	50	100	150	200	250	300
				AMPERAGE

2