General information

The UDGU-302 installation is designed for manual semi-automatic welding with a non-consumable electrode in an inert gas environment of aluminum and its alloys (with alternating current), stainless steels, titanium and copper-nickel alloys (with DC).
The installation is manufactured for domestic deliveries and for export.

Symbol structure

UDGU-302 X4:
UD - installation for arc welding;
G - in a protective gas environment;
U - universal;
3 - rated welding current, hundreds of A;
02 - registration number;
X4 - Climatic performance(UHL, O) and accommodation category
according to GOST 15150-69.

terms of Use

Altitude above sea level no more than 1000 m.
Ambient air temperature from 1 to 35°C for version UHL4 and up to 45°C for version O4.
Relative air humidity is up to 65% at a temperature of 20°C for the UHL4 version and up to 80% at a temperature of 27°C for the O4 version.
IN indoors with artificially controlled climatic conditions.
Environment non-explosive, not saturated with dust and not containing aggressive gases and vapors in concentrations that destroy metals and insulation.
Cooling water must meet the following requirements:
Hardness no more than 3.566 mg/eq.
Electrical resistance is at least 2 kOhm/cm2.
Insoluble sediments no more than 0.05 mg/l.
Operation of the installation must be carried out in accordance with the current "Rules technical operation electrical installations", "Safety rules for the operation of consumer electrical installations" and GOST 12.3.003-86.
The installation complies with the requirements of TU 16-89 IEAZH.683152.007 TU.

Regulatory and technical document

TU 16-89 IEAZH.683152.007 TU

Specifications

The installation is manufactured for power supply from a three-phase network with a voltage of 380 V with a frequency of 50 Hz for domestic supplies, with a voltage of 380, 415 V with a frequency of 50 Hz and 380, 400, 415 and 440 V with a frequency of 60 Hz - for export supplies.
Rated welding current (rms value), A - 315
Welding current control range, A - 10-315
Nominal duty cycle (DS), % - 60
Duration of welding cycle, min - 10
Rated operating voltage, V - 20
Operating voltage regulation range, V - 8-20
Voltage XX, V, no more, at: direct current - 100
AC - 80
Pulse and pause current control range, A - 10-315
Range of regulation of pulse duration and current pause, s - 0.1-9.9
Rated power consumption: power circuit (single-phase), kVA - 25
three-phase circuit, kW - 0.5
External characteristics- Steeply falling
Diameter of electrodes, mm - 0.8-6
Shielding gas consumption, l/min - 5-10
Cooling water flow rate at inlet pressure 0.25 MPa, l/h, not less than - 75
Radius of action of the welding torch relative to the power unit, m - 3
Radius of action of the welding torch with connector block relative to the power unit, m - 15
Sound level, dBA, no more than - 80
Guarantee period- 1 year from the date of commencement of operation, but no more than 1.5 years from the date of shipment to the consumer.

Design and principle of operation

The installation consists of a power unit, a portable connector block, welding torches, connecting wires and hoses.
The general combined installation diagram is shown in Fig. 1.

General combined installation diagram of UDGU-302:
1 - connector block;
2 - product to be welded;
3 - burner;
4 - power block;
5 - control panel;
6 - gearbox with flow meter;
7 - gas cylinder
The overall dimensions and weight of the installation components are given in the table.

Maximum distances between components installations (lengths of connecting wires and hoses) are:
from the power unit to the portable connector unit 12 m;
from the portable connector block to the torch (welding torch hose) 3 m.
The power unit (Fig. 2) consists of a power transformer, a fan, a circuit breaker, a thyristor unit, an equipment and control unit.

General view and overall dimensions of the power unit:
1 - resistor for regulating the time of purging shielding gas after welding;
2 - welding type switch;
3 - switch for turning on the shielding gas;
4 - switch for turning on gas injection;
5 - resistor for regulating the time of gas supply before welding;
6 - resistor for regulating the balance of half-waves of welding current;
7 - switch of control methods;
8 - thyristor block;
9 - nipple for introducing cooling water;
10 - nipple for introducing protective gas;
11 - nipple for gas injection;
12 - connector for connecting the product being welded;
13 - connector for connecting cooling water to the burner;
14 - connector for connecting protective gas to the burner;
15 - connector for connecting control wires from the “Welding” switch on the torch;
16 - connector for connecting the burner;
17 - nipple for gas outlet after inflating;
18 - nipple for cooling water outlet;
19 - grounding clamp;
20 - “Stop” button switch;
21 - push-button switch "Start";
22 - equipment block;
23 - ammeter;
24 - welding current range switch;
25 - signal lamp;
26 - connector for connecting control circuits of the connector block;
27 - resistors for regulating the weld crater welding time;
28 - current pulse duration and pause switch;
29 - control unit;
30 - resistors for regulating the value of the pulse and pause current;
31 - fan;
32 - power transformer;
33 - automatic switch;
34 - connector for connecting the power supply
All components of the power unit are mounted on the base. The block is moved using lifting means.
The grounding clamp for the power unit is located on the base.
There is a connector on the rear wall of the unit to connect the power supply.
The power unit is connected to the network and protected from short circuits by an automatic switch located on the rear wall of the power unit.
Forced air ventilation of the power unit.
The fan is driven by a three-phase asynchronous electric motor. The correct direction of fan rotation is clockwise (when observed from the front side of the power unit). In this case, air should enter from the front side and be exhausted from the back side of the unit.
The front grille is marked "Air Inlet".
Power transformer - single-phase step-down is installed on the base.
The thyristor block is designed for switching welding current in different modes, as well as for compensation of the constant component.
The equipment and control units are located in the power unit on the front side and are connected to the power part of the circuit with connectors.
The equipment block contains: push-button switches "START" and "STOP", a signal light, an ammeter for measuring the welding current value and a welding current range switch.
The control unit contains:
resistors for regulating weld crater welding time;
pulse duration and current pause switch;
resistors for regulating pulse and pause current;
welding type switch;
resistor for regulating the time of purging shielding gas after welding;
resistor for regulating gas supply time before welding;
resistor for regulating the balance of half-waves of welding current;
control method switch (local or remote);
switch for turning on gas injection;
switch for switching on shielding gas;
connector for connecting control circuits of the connector block.
The portable connector block allows you to bring it as close as possible to the welder.
On the front side of the block there are connectors for connecting the burner, and on the back side there are connectors for connecting the power unit.
The welding torch is designed for welding with a non-consumable tungsten electrode of the BA-1A brand.
The torch secures the electrode, supplies shielding gas and supplies welding current and water.
The small torch is used for welding at currents up to 160 A and ensures the fixation of tungsten electrodes with a diameter of 0.8; 1; 1.2; 1.6; 2;
3 and 4 mm.
The middle torch is used for welding at currents up to 315 A and provides fastening of tungsten electrodes with a diameter of 3; 4; 5 and 6 mm.
Welding at a current higher than the rated current for the torch is unacceptable.
Each burner consists of a body, a handle, a replaceable collet, a back cap, a nozzle, a switch, a current supply, tubes for gas and water supply and wires for control from the switch.
The tungsten electrode is inserted from the nozzle side and tightened into the collet using the rear cap.
Electric circuit diagram installation provides:
automatic time delay for preliminary supply of shielding gas to the burner and to the blower device to initiate the arc;
turning off the gas supply to the blower device;
automatic switching on of the welding circuit power transformer and exciter after the time required to purge the gas path after the start of gas supply has expired with a time delay setting of up to 5 s;
turning off the power transformer of the welding circuit after a time delay of no more than 1 s if the arc is not excited;
turning off the power transformer of the welding circuit after turning off the welding switch and smoothly decreasing the welding current to the minimum value with crater filling;
automatic shutdown of gas supply after a set time delay of 5 to 20 s after the cessation of the welding arc;
compensation of the direct component of the welding current when working on alternating current;
voltage cut off XX welding transformer within a time of no more than 1 s after opening the welding circuit;
pulse operating mode (with two levels of welding current);
possibility of supplying gas to pre-set the required flow rate;
possibility of connecting to the installation of an automatic welding machine with non-consumable electrode.
The installation uses a method of regulating the welding current by changing the opening angle of the power thyristors connected to the secondary circuit of the welding transformer. At times when the thyristors are closed, the continuity of the welding current is maintained through ballast resistances connected in parallel to the thyristor switch.

The delivery set includes: power unit, connector block *, welding torch GR-6, reducer AR-40 with flow meter for argon, passport in Russian or foreign languages, a set of spare and replacement parts, accessories according to the spare parts list.
Connecting wires, hoses for water and argon, and a protective gas cylinder are not included in the delivery package.
*Supplied by agreement with the consumer.

Offers:

Professional welding machine UDGU-302 for welding with a non-consumable electrode in an inert gas environment:
The welding installation UDGU-302 is designed for argon-arc welding on direct current of stainless and low-carbon steels, copper-nickel and titanium alloys, and on alternating current - aluminum and its alloys.
The UDGU-302 welding installation provides smooth regulation of the welding current and non-contact excitation of the arc using a high-frequency exciter.

When welding with alternating current, the ratio between the positive and negative half-waves of the welding current is regulated. As the positive half-wave increases, the cleaning effect improves, and as the negative half-wave increases, the melting effect improves. When the optimal ratio is established, a well-protected seam with the necessary penetration is obtained.
The UDGU-302 welding installation has automatic purging of the gas path before ignition of the arc and a delay in turning off the gas after the end of welding with the help of regulating their time.
High-quality welding is made possible by an automatic increase in the welding current at the beginning of welding and a smooth decrease in the welding current at the end (crater filling).
When welding with alternating current, stabilization of the arc combustion and regulation of the constant component are ensured.

If necessary, order the Welding installation UDGU-302. in Moscow by favorable price in the section Equipment for electric arc welding, cutting and surfacing.

The product is offered by a member of the catalog of the electrical portal Proelectro2.ru, CJSC "Concern Promsnabkomplekt" in Moscow. Information will be provided by PromSnabKomplekt by phone (812) 327–86-01 (multi-channel) (812) 777–04-33 (multi-channel) Fax (812) 327–86-56 (multi-channel).

Welding installation UDG-161 for argon-arc welding The welding installation UDG-161 is intended for argon-arc welding with a non-consumable electrode (TIG mode) on a direct current of metals except aluminum and its alloys and for manual arc welding...

Welding installation UDG-180 for argon-arc weldingThe welding installation UDG-180 is designed for argon-arc welding with a non-consumable electrode (TIG mode) on?alternating current aluminum and?its alloys and?for manual arc welding with coated electrodes...

Welding installation UDGU-251 AC/DC for argon arc welding. The welding installation UDGU-251 AC/DC is designed for argon-arc welding with a non-consumable electrode (TIG mode) on direct or alternating current of all metals and for manual arc welding...

Professional welding installation UDGU-302 for welding with a non-consumable electrode in an inert gas environment: The welding installation UDGU-302 is designed for argon-arc welding on direct current of stainless and low-carbon steels,...

Welding installation UDGU-351 AC/DC for argon arc welding. The welding machine UDGU-351 is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and on direct current of any metals...

Installations for arc welding with non-consumable electrodes in an inert gas environment

UDGU-302 UDG-501-1

All argon arc installations regardless of their size and power, they have a wide range functionality, providing high-quality welding:
- Non-contact arc excitation using a high-frequency exciter.
- Smooth regulation of welding current.
- Automatic increase in welding current at the beginning of welding and a smooth decrease in welding current at the end (crater filling). The time of current rise and fall is smoothly adjustable.
- Automatic purge of the gas path before ignition of the arc and a delay in turning off the gas after the end of welding with the ability to regulate their time.
- When welding on alternating current, the following is provided:
- stabilization of the welding arc;
- regulation of the constant component.

Professional argon arc welding non-consumable (tungsten) electrode in production workshops and repair services.

UDGU-302
- on direct current of stainless and low-carbon steels, copper-nickel and titanium alloys;
- on alternating current of aluminum and its alloys. When welding with alternating current, the ratio between the positive and negative half-waves of the welding current is regulated. As the positive half-wave increases, the cleaning effect improves, and as the negative half-wave increases, the melting effect improves. By establishing the optimal ratio between the half-waves, a well-cleaned seam with the necessary penetration is obtained.

UDG-501-1
- Powerful unit for welding aluminum and its alloys using alternating current.

Current stabilization during network voltage fluctuations is provided in all units of this series (UDG-3010, UDGU-302 and UDG-501-1).

The pulse welding mode is implemented in the UDG-3010 and UDGU-302 installations, as well as in the ADM-251 module. When pulse welding, the current automatically changes between high level pulse welding current and low level pauses.

The settings are continuously adjustable:

Connector block

The magnitude of the pulse current;
- pause current value;
- pulse duration;
- duration of the pause.

Connection of TIG welding machines is possible for the UDGU-302 and UDG-501-1 installations.

The connector block, which can be equipped with the UDGU-302 and UDG-501-1 installations, allows you to significantly increase the distance from the installation to the welding site - 15 m.

Specifications

Options		UDGU-302	UDG-501-1
Supply voltage, 50 Hz
Power consumption, no more
Type of welding current		DC/AC
Rated welding current (PV)		315 (60%) 250 (100%)	500 (60%) 400 (100%)
Welding cycle time
Welding current adjustment range
Pulse welding mode: - pulse current - pause current - pulse duration - pause duration	A A With With	10 ... 315 10 ... 315 0,1 ... 9,9 0,1 ... 9,9	- - - -
Open circuit voltage, no more		100 post. 80 AC
Rated operating voltage
Electrode diameter: - tungsten - piece		0,8 ... 6 -	2 ... 10 -
Argon consumption
Water consumption, not less
Degree of protection		IP22
Weight
Dimensions (LxWxH)
Recommended thicknesses for TIG welding: low carbon steels stainless steels titanium alloys copper-nickel alloys aluminum and alloys		0,5 ... 10 0,5 ... 10 0,3 ... 4 0,4 ... 5 1,5 ... 5	- - - - 1 ... 10

Installation UDG-161 for argon arc welding.

The UDG-161 installation is intended for argon arc welding with a non-consumable electrode (TIG mode) on direct current of metals except aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode).
The source of the UDG-161 installation has a wide range of smooth control of the welding current. The source has a thyristor adjustment of the welding current.

Installation UDG-180 for argon arc welding.

The UDG-180 installation is intended for argon arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode).
The installation source has a wide range of smooth mechanical regulation welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer.
Current adjustment is carried out by mechanical manual movement of a vertical magnetic shunt.

Installation UDGU-251 AC/DC for argon arc welding.

The UDGU-251 AC/DC installation is intended for argon-arc welding with a non-consumable electrode (TIG mode) on direct or alternating current of all metals and for manual arc welding with coated electrodes (MMA mode.
The welding installation UDGU-251 has an alternating/direct current (AC/DC) switching. The source of the welding installation UDGU-251 has a thyristor control, a wide range of smooth regulation of the welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer of increased reliability and power.

Professional installation UDGU-302 for welding with a non-consumable electrode in an inert gas environment.

The welding installation UDGU-302 is designed for argon-arc welding on direct current of stainless and low-carbon steels, copper-nickel and titanium alloys, and on alternating current - aluminum and its alloys.
The welding installation UDGU-302 provides smooth regulation of the welding current and non-contact excitation of the arc using a high-frequency exciter.

Installation UDGU-351 AC/DC for argon arc welding.

The UDGU-351 installation is intended for argon arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and on direct current of any metals except aluminum, also for manual arc welding with coated electrodes (MMA mode) on direct and alternating current. The welding installation UDGU-351 has an alternating/direct current (AC/DC) switching. The source of the welding unit UDGU-351 has thyristor regulation and provides easy excitation and stable arc burning due to the built-in exciter - stabilizer. The presence of adjustments for the initial welding current, the magnitude of the welding current, the gas purging time at the beginning and end of welding, and the current decay time at the end of welding allows you to select optimal mode welding

Installation UDGU-501 AC/DC for argon arc welding

The UDGU-501AC/DC installation is designed for argon-arc welding with a non-consumable electrode (TIG mode) on alternating current of aluminum and its alloys and for manual arc welding with coated electrodes (MMA mode). There is alternating/direct current (AC/DC) switching. By special order, a version of the installation is made with smooth control of the increase in welding current, a special oscillator is installed to improve quality welded joint and to work on long cables(plumes) of the burner. The installation source has a wide range of smooth regulation of the welding current, provides easy excitation and stable arc burning due to the built-in exciter-stabilizer of increased power.

Installation UDG-501-1: Professional installation for welding with a non-consumable electrode in an inert gas environment:
The UDG-501-1 installation is intended for argon arc welding on alternating current of aluminum and its alloys.
The welding installation UDG-501 provides smooth regulation of the welding current and non-contact excitation of the arc using a high-frequency exciter.