Description
The 1092090202 is the drive motor assembly that Atlas Copco lists for the GA 45 oil-injected screw compressor on a 400 V, 50 Hz supply. The record describes it as GA45 MOTOR ASS’Y, 400V, 50HZ, and the unit is a 45 kW three-phase induction motor of the YXLA200L3-2 type.
The number this drive is ordered under has moved, and that is the first thing a spare-parts list has to account for. The record shows that 1092090202 has been replaced by 1092901603, so an enquiry for this motor travels under the newer number. A machine built with the older number is still matched to the same drive, because fitment is settled by the machine rather than by the label on the file.
The Ordering Number That Changed Hands
Part numbers move: the drive stays on the machine while the number in the catalogue is exchanged. Anyone holding the 1092090202 in a spare-parts file needs the change in front of them before the enquiry goes out.
The Change Note on the Item Record
The item record for 1092090202 carries a change note: the number has been replaced by 1092901603. The change is recorded from June 2023, so a machine that has been through the parts desk recently is already listed under the newer number.
The record pairs the two numbers so that a workshop arriving with either of them arrives at the same drive, and the plate on the old motor stays useful after the number moves.
What the Change Means at the Parts Desk
Orders for this drive are directed to 1092901603. The older number keeps its place in the paperwork, because it is the label on machines and on quotations raised before the change.
A parts desk resolves the pair in one pass: the model and the serial number of the compressor settle the fitment, and the two numbers settle which line the order is written against.
What the 1092090202 Motor Assembly Is
The 1092090202 is a complete drive unit rather than a bare motor. It takes the electrical supply in at the terminal box and delivers the rotor speed the compressor element is built for at the flange.
What an Assembly Covers
The assembly carries the stator and the rotor, the housing that holds them in line, the shaft end that enters the coupling and the flange that bolts it to the compressor. Renewing the drive line means changing the complete motor rather than rebuilding one on site.
It is a 45 kW unit on a 400 V, 50 Hz network, and the plate figures of the 1092090202 are read before the order is placed and again before the first start.
Where the Drive Sits in the GA 45
The record lists the item against the GA 45, the oil-injected screw compressor in the 45 kW class, and the motor number on the machine is the one to quote when the drive is renewed. Atlas Copco builds the machine in several configurations, so the drive line of a particular unit is settled by the record behind its serial number.
That is why the model and the serial number travel with an enquiry for the 1092090202: two compressors of the same model can carry different drive arrangements.
A 45 kW Two-Pole Drive for the GA 45
The 1092090202 is a two-pole, three-phase induction motor rated 45 kW. Its nameplate speed is 2960 r/min, the loaded speed of the two-pole class on a 50 Hz network, and its rated current is 79.4 A.
The type on the plate is YXLA200L3-2. The frame size inside that code, 200L, is shared with other outputs in the same drive family, so the frame alone does not identify the unit.
Synchronous Speed and Slip
A two-pole motor on a 50 Hz supply has a synchronous speed of 3000 r/min. The 1092090202 runs at 2960 r/min under load, and the difference of 40 r/min is the slip of the induction machine, 1.3 % of the synchronous figure.
Why the High-Speed Class Suits a Direct Drive
An element built to run close to 3000 r/min is driven straight from a two-pole motor, with a coupling between the two shafts and no belt or gear ratio in between. The 1092090202 belongs to that arrangement: the flange face carries the motor on the compressor.
The Delta Connection
The plate records the winding of the 1092090202 as delta. In a delta connection the three windings are joined end to end and the supply is applied across each pair of terminals, which is the arrangement three-phase motors of this size use on a 400 V network.
The connection belongs to the installation rather than to the order: the link bars in the terminal box are set to match the plate before the supply is switched on.
Plate Data, Efficiency and the Service Factor
The plate of the 1092090202 carries the output, the supply, the current and the figures that describe how much the motor is built to take beyond its rated point. Those are the values a workshop confirms before the drive is ordered and again before it is started.
Output, voltage and frequency have to agree with the supply and the load. The 1092090202 is rated 45 kW at 400 V and 50 Hz, with a rated current of 79.4 A and a nameplate speed of 2960 r/min.
Efficiency Class IE2 at 92.9 %
The efficiency class recorded for the 1092090202 is IE2 at 92.9 %. The class is a property of the design and does not change with the running hours of the machine, but the figure the motor delivers in service does depend on the state of the assembly.
Service Factor 1.17 and the Current That Goes With It
The service factor of the 1092090202 is 1.17, and the plate pairs that figure with a current of 92.9 A. A service factor above 1.0 tells the workshop that the motor is built to carry a load past its rated output without the winding going beyond the thermal limit of its insulation, and at 1.17 the margin is 17 %.
Running the drive at its rated output remains the rule; the service factor describes what the insulation system is built to absorb, not a working point to aim at.
Ambient 46 °C and Insulation Class F
The plate of the 1092090202 gives the ambient rating as +46 °C and the insulation class as F. The first figure is the air temperature the motor is built to work in, and the second is the thermal class of the winding system.
Mounting, Protection and Handling
Three things decide how the 1092090202 is mounted, cooled and moved: the flange joint that carries it, the protection class of its enclosure and the mass of the assembly.
The Flange Joint on the Compressor
The 1092090202 is a flanged assembly, and the frame face is the joint that carries it on the compressor. That face locates the motor so that the shaft end lines up with the coupling on the element side.
Because the same frame size serves more than one output in this drive family, the flange and the plate data are read together with the machine record before the unit is ordered.
IP55 Protection
The protection class of the 1092090202 is IP55. The first digit describes how the enclosure handles solid objects and the second how it handles water, so a 5 in each position is a dust-protected, jet-protected enclosure.
Handling a 330 kg Assembly
The assembly is recorded at 330 kg, so the change is planned around lifting and handling before anything is unbolted. The machine is stopped and isolated, and the assembly is brought to the flange with the shaft lined up for the coupling.
Fitting the Drive and First Start
Work on the 1092090202 follows the order of any flanged drive: the joint is prepared, the supply is checked against the plate, and the readings are taken once the machine runs.
Preparing the Joint
The flange face is cleaned and checked for true before the 1092090202 is offered up, and the coupling and its insert are inspected while the drive line is open. The mounting bolts are then made up evenly, so the flange is drawn down square rather than pulled to one side.
Supply and Connection Checks
The supply is confirmed against the plate of the 1092090202: 400 V at 50 Hz, three-phase, with the winding connected in delta. The terminal box is checked for the link bar setting and for clean, tight terminations.
The protective device is set for the rated current of 79.4 A, and the insulation of the circuit is checked before the motor is energised.
Readings After the First Start
The 1092090202 is turned over on a short no-load run to confirm that it spins free and in the right direction. The machine is then loaded and the running readings are taken.
Ordering the 1092090202 Through Seadweer
A drive motor is ordered by record and by plate, because two motors of the same output can differ in type, frame, supply and winding connection. An order for this one also carries a number change.
What to Send with the Enquiry
Send the compressor model and serial number, the drive number you hold, and a photograph of the plate on the motor being replaced if one is easy to take. The team checks the machine record against the 1092090202 and its replacement number before the quotation is issued.
If your unit carries a different motor number or flange, the same check resolves it.
What the Quotation Repeats
The quotation repeats the item data of the drive: the description, the motor type, the electrical ratings and the physical figures, so the workshop can plan the change without a second enquiry.
Send us the model and serial number from your compressor nameplate together with the number on your motor, and Seadweer confirms the matching drive and prepares your quotation.
Technical Specifications
The tables below collect the identification, electrical and physical data of the 1092090202 as the item record and the nameplate state them.
Part Identification
| Item number | 1092090202 |
| Description | GA45 MOTOR ASS’Y, 400V, 50HZ |
| Motor type | YXLA200L3-2 |
| Rated output | 45 kW |
| Frame | 200L |
| Superseded by | 1092901603 |
| Country of origin | China |
| Tariff code | 85015290 |
Electrical Data
| Rated voltage | 400 V, three-phase |
| Rated frequency | 50 Hz |
| Rated current | 79.4 A |
| Current at service factor | 92.9 A |
| Rated speed | 2960 r/min |
| Efficiency class | IE2, 92.9 % |
| Service factor | 1.17 |
| Insulation class | Class F |
| Protection class | IP55 |
| Winding connection | Delta |
| Ambient rating | 46 °C |
Physical Data
| Dimensions (L × W × H) | 76 × 48 × 67 cm |
| Weight as supplied | 330 kg |
FAQ
What is the 1092090202?
The 1092090202 is a 45 kW motor assembly for the GA 45 oil-injected screw compressor on a 400 V, 50 Hz supply. It is a two-pole, three-phase induction motor of the YXLA200L3-2 type, driving the element from its flange.
Which compressor does the 1092090202 serve?
The record lists the assembly against the GA 45 machine in the 45 kW class. The model and serial number of your compressor confirm the drive line, because fitment is settled by the machine rather than by output alone.
What are the main ratings of the 1092090202?
The motor gives 45 kW at 400 V and 50 Hz, with a rated speed of 2960 r/min and a rated current of 79.4 A. The efficiency class is IE2 at 92.9 %, the insulation class is F, the protection class is IP55 and the service factor is 1.17.
What does the service factor of 1.17 mean on the 1092090202?
It means the motor is built to carry a load 17 % above its rated output without the winding going past the thermal limit of its insulation. The plate pairs the figure with a current of 92.9 A.
The record in my file shows 1092090202. What number do I order?
Orders are directed to 1092901603. Quote the number you hold with the machine model and serial number, and the parts desk resolves the pair in the same pass.
How is the 1092090202 fitted?
The assembly is offered up to the flange with the shaft end lined up for the coupling, and the bolts are made up evenly. The supply, the link bar setting and the protection are checked against the plate before the first start.
More Motors Available
Other Atlas Copco Motors are available upon request. Please check the table below or contact us for details.
| Part Number | Part Name | Part-Number |
|---|---|---|
| 1080407844 | MOTOR | 1080-4078-44 |
| 1080407914 | MOTOR | 1080-4079-14 |
| 1080407916 | MOTOR | 1080-4079-16 |
| 1080407942 | MOTOR | 1080-4079-42 |
| 1080407952 | MOTOR | 1080-4079-52 |
| 1080407954 | MOTOR | 1080-4079-54 |
| 1080408354 | MOTOR | 1080-4083-54 |
| 1080408564 | MOTOR | 1080-4085-64 |
| 1080409834 | MOTOR | 1080-4098-34 |
| 1080409934 | MOTOR | 1080-4099-34 |
| 1080411002 | MOTOR 75KW VSD 500v | 1080-4110-02 |
| 1080411102 | MOTOR 90KW VSD | 1080-4111-02 |
| 1080411132 | MOTOR | 1080-4111-32 |
| 1080411162 | MOTOR | 1080-4111-62 |
| 1080411172 | MOTOR | 1080-4111-72 |
| 1080411202 | MOTOR | 1080-4112-02 |
| 1080411301 | MOTOR 55KW 200V 50HZ | 1080-4113-01 |
| 1080411302 | MOTOR 55KW 230V 50HZ | 1080-4113-02 |
| 1080411303 | MOTOR 55KW 400V 50HZ | 1080-4113-03 |
| 1080411304 | MOTOR 55KW 440V 50HZ | 1080-4113-04 |
| 1080411305 | MOTOR 55KW 500V 50HZ | 1080-4113-05 |
| 1080411326 | MOTOR 55KW 200V 60HZ | 1080-4113-26 |
| 1080411328 | MOTOR 55KW 380V 60HZ | 1080-4113-28 |
| 1080411363 | MOTOR | 1080-4113-63 |
| 1080411375 | MOTOR | 1080-4113-75 |
| 1080411401 | MOTOR 75KW 200V 50HZ | 1080-4114-01 |
| 1080411402 | MOTOR 75KW 230V 50HZ | 1080-4114-02 |
| 1080411403 | MOTOR 75KW 400V 50HZ | 1080-4114-03 |
| 1080411404 | MOTOR 75KW 440V 50HZ | 1080-4114-04 |
| 1080411405 | MOTOR 75KW 500V 50HZ | 1080-4114-05 |
| 1080411416 | MOTOR 75KW 200V 60HZ | 1080-4114-16 |
| 1080411418 | MOTOR 75KW 380V 60HZ | 1080-4114-18 |
| 1080411420 | MOTOR 75KW 575V 60HZ | 1080-4114-20 |
| 1080411463 | MOTOR | 1080-4114-63 |
| 1080411716 | MOTOR | 1080-4117-16 |
| 1080411727 | MOTOR 7.5KW 400V 50H | 1080-4117-27 |
| 1080411736 | MOTOR 7.5KW 200-230- | 1080-4117-36 |
| 1080411746 | MOTOR 11KW 230V 50H | 1080-4117-46 |
| 1080411757 | MOTOR 11KW 380V 60H | 1080-4117-57 |
| 1080412446 | MOTOR | 1080-4124-46 |
| 1080412457 | MOTOR | 1080-4124-57 |
| 1080413902 | MOTOR | 1080-4139-02 |
| 1080414112 | MOTOR | 1080-4141-12 |
| 1080414434 | MOTOR | 1080-4144-34 |
| 1080414609 | MOTOR | 1080-4146-09 |
| 1080414709 | MOTOR | 1080-4147-09 |
| 1080414710 | MOTOR | 1080-4147-10 |
| 1080414801 | MOTOR | 1080-4148-01 |
| 1080414809 | MOTOR | 1080-4148-09 |
| 1080414811 | MOTOR | 1080-4148-11 |
Miguel Serrano –
The drive on our GA 45 came due and our spare-parts list still showed the older number, so we sent that number along with the machine details. The team came back with the current number for the same drive, and the plate data matched what we had read from the motor on the machine. It arrived with the flange protected and the papers with it, and it went straight onto the element housing. Current and vibration have sat where the old unit ran since the first start.