STH 270 - Miller Welding

STH 270 - Miller Welding
Issued Oct. 2014 • Index No. DCM/38.0 UK
STH 270
Quick
Specs
Stick/TIG Welding
Power Source
Industrial Applications
Processes
Input Power 400 V, Three-Phase
Petro/Chemical
Mechanical Contractors
Shipboard Installation
Process Piping
Stick (SMAW)
Lift-Arc™ TIG (GTAW)
Pulsed TIG (GTAW-P)
Amperage Range 5 – 270 A
Rated Output 270 A at 30.8 V, 40% Duty Cycle
Net Weight 24 kg (52.9 lb.)
Portable in the shop or at the jobsite —
at 24 kg (52.9 lb.) the STH 270 is easily
moved from location to location.
STH 270 comes complete with:
Power source
3-meter (10 ft.) power cord
Gas connection kit
Inverter-based, DC power source has
a simple-to-use operator interface
providing only the necessary controls in
a compact machine.
See page 2 for ordering information.
Adjustable postflow gives the operator
better control of the gas parameters
affecting weld zone.
Thermal overload protection with
indicator light helps prevent machine
damage if the duty cycle is exceeded or
airflow is blocked.
Lift-Arc™ start provides TIG arc starting
without the use of high frequency or the
risk of tungsten contamination.
VRD function is a simple design that reduces
the open-circuit voltage to 12 volts when
the welding power source is not in use.
HF start for non-contact arc starting
that eliminates tungsten or material
contamination.
Digital meter. Preset amperage or actual
amperage/voltage while welding.
Built-in pulsing capabilities allow the
operator to select from four fixed pulse
frequencies to satisfy the application.
Remote amperage control provided
through 14-pin receptacle on front of
machine permits use of standard remote
amperage control devices.
Shown with
MH Running Gear
Selectable trigger configuration allows the
operator to choose 2T or 4T trigger method.
Built-in gas solenoid eliminates the need
for a bulky torch with gas valve.
Built-in upslope/downslope function helps
provide better arc starts and reduces craters.
Warranted for 3 years, parts and labour.
Adjustable Hot Start™ for Stick arc starts.
Adjust the optimal start current for the
application. The current automatically
increases the output amperage at the start
of a weld.
Adjustable Arc Force™ prevents sticking.
Adjust the optimal arc force value.
Adjustable arc force supports positional
welding by increasing the output amperage.
Specifications (Subject to change without notice.)
Input Power
400 V, 16 A,
3-phase,
50/60 Hz
Welding
Mode
Amperage/
Voltage Range
Rated Output
KVA/KW
Max. OpenCircuit Voltage
Stick
5 – 270 A
20 – 30.8 V
180 A at 27.2 V, 100% duty cycle
270 A at 30.8 V, 40% duty cycle
7.9 KVA/7.1 KW at 100% duty cycle
11.4 KVA/10.3 KW at 40% duty cycle
50 VDC
(12 VDC)*
TIG
5 – 270 A
10 – 20.8 V
180 A at 17.2 V, 100% duty cycle
270 A at 20.8 V, 40% duty cycle
4.8 KVA/4.0 KW at 100% duty cycle
7.7 KVA/6.7 KW at 40% duty cycle
*VRD sense voltage for Stick and Lift-Arc ™ TIG.
Dimensions
Net
Weight
H: 345 mm 24 kg
(13.6 in.) (52.9 lb.)
W: 219 mm
(8.6 in.)
D: 568 mm
(22.4 in.)
All CE models conform to the applicable parts of the IEC 60974 series of standards.
IP23 rating — This equipment is designed for outdoor use. It may be stored, but is not intended to be used outside during precipitation
unless sheltered. Operating temperature range is -10 to 40° C (14 to 104° F). Storage temperature range is -30 to 65° C (-22 to 149° F).
Portions of the preceding text are contained in EN 60974-1: “Welding power sources for arc welding equipment.”
ITW Welding – BV
ITW Welding – Italy S.r.l.
Edisonstraat 10
P.O. Box 1551
NL-3261 LD Oud-Beijerland,
Netherlands
TEL: +31 (0) 186 641 444
FAX: +31 (0) 186 640 880
Via Privata Iseo 6/e
20098 San Guiliano M.se
Milano – Italia
TEL.: +39 02 982901
FAX: +39 02 98281552
ITW-Welding.com
International Headquarters
Miller Electric Mfg. Co.
An Illinois Tool Works Company
1635 W. Spencer Street
Appleton, WI 54914 USA
TEL. : +1 920 735 4554
FAX : +1 920 735 4125
MillerWelds.com
Genuine Miller Accessories
®
HydraCool® 270
Coolant System
#028 042 107 400 VAC
Designed to integrate with
the STH 270 power source.
For use with water-cooled
torches rated up to 280 amps. 4.9-litre
(1.3 gal.) capacity.
Small Runner Cart
#300 988
Designed for Maxstar 280,
Dynasty 280 and STH 270,
with or without cooler. Cart
features single cylinder rack,
cable holder and foot pedal
holder.
MH Running Gear
#018 035 026
Designed for Maxstar 280,
Dynasty 280 and STH 270,
with or without cooler.
Easy-to-maneuver two-wheel
cart with single cylinder rack,
cable holder and storage area.
Remote Controls
RCC-14 Remote Contactor and
Current Control #151 086
Side-to-side rotary-motion fingertip current/
contactor control fastens to TIG torch using
two Velcro® straps.
RCCS-14 Remote Contactor and
Current Control #043 688
Up-and-down rotary-motion fingertip current/
contactor control fastens to TIG torch using
two Velcro® straps.
RFCS-14 HD Foot
Control #194 744
Heavy-duty foot pedal
current/contactor
control with increased
stability and durability.
Cord can exit front, back or either side.
RHC-14 Hand Control
#242 211 020
Miniature hand control
for remote current and
contactor control.
RMS-14 On/Off Control #187 208
Momentary-contact switch for contactor
control. Rubber-covered pushbutton dome
switch ideal for repetitive on-off applications.
SHRC-14 Remote Control
#058 040 019 5 m (16.4 ft.)
#058 040 020 10 m (32.8 ft.)
#058 040 021 20 m (65.6 ft.)
Single-hand control for current only.
Ordering Information
Power Source
Stock No.
Description
STH 270
#059 016 024
400 VAC, 3-phase, 50/60 Hz
Qty.
Accessories
HydraCool® 270 Coolant System
#028 042 107
400 VAC. 4.9-litre (1.3 gal.) cooler for water-cooled torches up to 280 amps
Blu-Liquid Coolant
#050 024 004
Low conductivity, 10 litres (2.6 gal.)
Small Runner Cart
#300 988
Four-wheeled cart with cylinder rack, cable holder and foot pedal holder
MH Running Gear
#018 035 026
Two-wheeled cart with cylinder rack, cable holder and foot pedal holder
Welding Cable Kit, Stick
#058 066 039
#058 066 040
#058 066 041
#058 066 042
#058 066 043
#058 066 044
200 A, 35 mm2, 3 m (9.8 ft.)
200 A, 35 mm2, 5 m (16.4 ft.)
300 A, 50 mm2, 5 m (16.4 ft.)
300 A, 50 mm2, 10 m (32.8 ft.)
300 A, 50 mm2, 15 m (49.2 ft.)
300 A, 50 mm2, 20 m (65.6 ft.)
RCC-14
#151 086
8 m (26.5 ft.), remote current/contactor side-to-side rotary control
RCCS-14
#043 688
8 m (26.5 ft.), remote current/contactor up-and-down rotary control
SRHC-14
#058 040 019
#058 040 020
#058 040 021
5 m (16.4 ft.), single-hand remote control for current only
10 m (32.8 ft.), single-hand remote control for current only
20 m (65.6 ft.), single-hand remote control for current only
RFCS-14 HD
#194 744
6 m (20 ft.), remote current/contactor foot pedal control
RHC-14
#242 211 020
6 m (20 ft.), remote current/contactor hand control
RMS-14
#187 208
8 m (26.5 ft.), momentary-contact switch for contactor control
TIG Torch
Tungsten
Helmet
Gas Hose
Remote Controls
Date:
Distributed by:
© 2013 Miller Electric Mfg. Co.
Total Quoted Price:
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