Atlas Copco 1092131561 Motor 160 kW 380/50 IE3

Description

The 1092131561 is the 160 kW drive motor for Atlas Copco screw compressors in the large power class. It is the motor that turns electrical power into the rotor speed the compressor element needs, and it is built to the IE3 premium efficiency class for continuous industrial duty.

The motor is ordered by its part record and its nameplate data. The 1092131561 is the number the planner carries when a drive motor has to be renewed or matched to a machine.

What the 1092131561 Motor Is

The 1092131561 is a three-phase induction motor rated at 160 kW on a 380 V, 50 Hz supply. It is built to the HJN 315L1-4 motor type and runs at 1485 r/min, which places it in the 4-pole class of industrial drive motors. Item data puts the motor at 134 × 85 × 80 cm and a net weight of 1080 kg, so it is a heavy unit that is planned for rather than handled by hand.

The motor belongs to the electrical drive family of the Atlas Copco parts programme, and it is listed under the motor description of the item. Because the 1092131561 carries one standing number, the workshop matches it to the record it already holds, and the unit is the same whether the order is placed by code or by name.

Designation and Part Record

The official listing names the part under the number 1092131561, with Motor 160 kW 380/50 IE3 as the description of the item. The product group code is PEIA and the material group is S1. Those codes are the internal reference of the parts programme, and they are repeated here so the workshop can match the 1092131561 to the record it already holds.

The nameplate of the 1092131561 carries the same story: type HJN 315L1-4, output 160 kW, 380 V, 50 Hz, efficiency class IE3 at 95.8 %, 1485 r/min, 285 A, insulation class F and the IM B5 mounting code. Those values are the ones the machine record is checked against before an order is confirmed.

The Drive Motor in a Screw Compressor

In a rotary screw compressor the drive motor is the prime mover. It converts electrical energy into the mechanical rotation that turns the compressor element, and it runs whenever the machine makes air. The 1092131561 is sized for the 160 kW class, which is the large end of the industrial screw range.

From Electrical Input to Rotor Speed

A 4-pole motor on a 50 Hz supply has a synchronous speed of 1500 r/min, and the loaded speed of the 1092131561 is 1485 r/min. The small difference is the slip of the induction motor, and it is a normal part of how the machine develops torque. The 1092131561 holds that speed across the loaded duty of the compressor, so the element sees a steady input.

Because the motor runs with the machine, its efficiency is felt in every running hour. Electrical energy is the largest single input a compressor uses over its life, and the motor is the part that spends it. A unit built to the IE3 class keeps a larger share of that energy in the rotor and loses less as heat, and the 1092131561 is rated at 95.8 % in that class.

Direct Flange Coupling

The 1092131561 is mounted on the IM B5 flange, which couples the motor shaft straight to the compressor element. There is no belt between the motor and the rotor, so there is no belt to tension, no belt loss and no pulley ratio to set. The drive is a direct mechanical link, and the 1092131561 runs at the speed the element is built for.

Efficiency and the IE3 Class

Efficiency is the share of the electrical input that leaves the motor as mechanical power. The rest is lost as heat in the windings, the core and the bearings. The 1092131561 is rated at 95.8 % in the IE3 class, which is the premium efficiency level for a motor of this size.

What the IE3 Rating Means

IE3 is a defined efficiency class for industrial induction motors, and it sits above the older IE2 and IE1 levels. A motor in this class is built with more active material in the core and the windings, so it converts the same input into more output. The 1092131561 carries the class on its nameplate, and the value is fixed by the design rather than set by the running conditions.

Motor Platform and Construction

The 1092131561 is built on the 315L frame, a cast-iron platform sized for the 160 kW class. The frame carries the mass and the thermal capacity the motor needs, and the cast iron damps the vibration that a directly coupled drive can pass on.

Frame and Rotor

The 315L frame is the housing that holds the stator, the rotor and the bearings in line. A 4-pole rotor runs at the speed the compressor element needs, and the frame keeps the air gap even across the long running hours of a plant machine. The 1092131561 is a heavy unit at a net weight of 1080 kg, and that mass is part of what keeps the drive steady.

Enclosure and Insulation

The 1092131561 is built with a class F insulation system, which is the thermal class recorded on its nameplate. Class F insulation lets the motor work in the warm air inside a compressor package, where the ambient temperature is higher than in an open plant room. The enclosure keeps dust and moisture away from the windings so the insulation can do its job.

Mounting and Alignment

Mounting and alignment decide how long a directly coupled drive lasts. The 1092131561 uses the IM B5 flange, a face-mounted arrangement with no feet, so the motor is carried by the flange that joins it to the compressor.

The IM B5 Flange

The IM B5 code describes a motor with a flanged face and no feet. In the compressor the flange bolts to the element housing and the motor shaft enters the coupling as one straight line. The 1092131561 is built with the flange pattern and the shaft dimensions that this mounting calls for, which is why the mounting code is part of the part record.

Because the motor hangs on the flange rather than standing on feet, the flange face has to be clean and square before it is bolted up. A face that is not true pulls the shafts out of line, and the vibration that follows is passed to the bearings at both ends of the drive.

Running Conditions and Environment

A compressor motor works in a warm, dusty place. The 1092131561 is built for that setting, and its electrical and mechanical features are chosen for continuous industrial service.

Duty and Ambient

The 1092131561 is rated for continuous service at its nameplate values, and it is built to hold them at the ambient temperature inside a compressor package. Class F insulation and a cast-iron frame together give the thermal margin the machine needs when the running hours add up. The unit is a 380 V, 50 Hz motor, so the supply it is ordered against has to match the plant network.

Air flow around the frame matters as much as the motor itself. A clear path for cooling air keeps the windings at the temperature the insulation class is rated for, and it is one of the simple checks that protects a motor of this class.

Installation and Maintenance Notes

The 1092131561 is a heavy unit, and the installation is planned around that. The motor is brought to the flange, aligned to the element and bolted up with the shaft entered in the coupling, all with the machine stopped and isolated.

Electrical Verification

Before the 1092131561 is run, the supply is checked against the nameplate. The plant network has to give 380 V at 50 Hz, and the connections are made to the winding arrangement the motor calls for. The rating of the protection and the state of the terminals are confirmed at the same time, so the motor starts under the conditions it was built for.

The 1092131561 is then turned on a no-load check to confirm it runs free and in the right direction before the compressor is loaded.

Running Checks

Once the machine is back in service, the signs to watch are vibration, temperature and current. A rise in vibration points to alignment or bearing wear, and a rise in current or temperature points to a load or cooling problem. The 1092131561 gives a steady reading when it is aligned and cooled, and a drifting one when it is not.

Ordering the 1092131561 Through Seadweer

Drive motors are ordered by record and by nameplate, because two motors of the same output can differ in frame, mounting and voltage. The ordering routine of the 1092131561 is built around that fact.

Machine Record Check

Send Seadweer your compressor model and serial number, and the team checks the record against the 1092131561 before the quotation is issued. If your machine carries a related motor number or a different mounting, the check resolves it in the same pass, and the order is confirmed under the current production record.

What the Quotation Confirms

The quotation repeats the item data of the 1092131561: the description, the motor type, the electrical ratings and the box figures. One confirmation covers the unit, so the workshop can plan the change without a second enquiry. The 1092131561 is listed and ordered under the one number the order travels under.

Technical Specifications

The tables below collect the identification, electrical and physical data of the 1092131561 in one place, exactly as the item data and the nameplate state them.

Part Identification

Electrical Data

Dimensions and Weight

The three tables together are the data sheet of the 1092131561, and Seadweer repeats them with the quotation so the workshop knows what arrives before it arrives.

FAQ

What is the 1092131561?

The 1092131561 is the 160 kW drive motor for Atlas Copco screw compressors in the large power class. It is a three-phase induction motor built to the HJN 315L1-4 type and rated at 380 V, 50 Hz. The number is the line the planner carries on the parts record.

What are the main ratings of the 1092131561?

The motor gives 160 kW at 380 V and 50 Hz, with a rated speed of 1485 r/min and a rated current of 285 A. It carries the IE3 efficiency class at 95.8 % and class F insulation. The mounting is the IM B5 flange.

What does the IE3 class mean for the 1092131561?

IE3 is the premium efficiency class for industrial induction motors, above the older IE2 and IE1 levels. The 1092131561 is rated at 95.8 % in this class, so it keeps more of the electrical input as mechanical power. That matters on a motor that runs with the compressor for long hours.

Why is the IM B5 flange used on the 1092131561?

The IM B5 flange couples the motor shaft straight to the compressor element, so there is no belt and no pulley ratio between them. The face-mounted design keeps the two shafts on one line when the flange is clean and true. It is the mounting the 1092131561 is built with.

Which compressors use the 1092131561?

The motor serves large oil-injected screw compressors in the 160 kW class, such as the GA range. The machine record confirms the fitment, because the motor is matched by frame, mounting and voltage rather than by output alone.

How do I order the 1092131561?

Send Seadweer your compressor model and serial number, and the team checks the record against 1092131561 before the quotation. If your paperwork shows a related motor number or a different mounting, the check resolves it in the same pass.

More Motors Available

Other Atlas Copco Motors are available upon request. Please check the table below or contact us for details.