Used Dpx Power Loadbank Ac400V-2.000 Kw - Dpx-30028 for sale (50,682)

Condition: like new (used), Year of construction: 2018, operating hours: 100 h, rotational speed (min.): 2,982 rpm, input voltage: 500 V, ABB electric motor, 132 kW Laedpfsv I Ervox Amted 50 Hz, 2982 rpm 500 V 6-month warranty

Condition: excellent (used), Year of construction: 2018, operating hours: 100 h, functionality: fully functional, rotational speed (min.): 1,490 rpm, input voltage: 400 V, input frequency: 50 Hz, 200 kW electric motor IE4 efficiency class Year of manufacture: 2024 Ljdjn Tntqspfx Amtead 6-month warranty 400 V 1490 rpm 315 l

Condition: good (used), Year of construction: 2000, Parts from Prima Power Rapido 5 Ljdpfjw Shzxox Amtoad Laser source Touch control P9000L / Primach 900L 3D laser head spare parts and manuals

Condition: excellent (used), Professional electric motor from the renowned German manufacturer AC-Motoren GmbH. Robust construction designed for continuous operation in machinery, pumps, fans, gear units and other industrial equipment. The motor is in good visual and technical condition. Flange-mounting type B5. Shaft with keyway. Technical data: • Manufacturer: AC-Motoren GmbH • Type: FCA 112M-4 • Power: 4.8 kW • Power supply: 3~ / three-phase • Speed: 1440 rpm – 50 Hz • Speed: 1728 rpm – 60 Hz • Voltage 50 Hz: 380-420V / 660-720V • Voltage 60 Hz: 380-480V / 660-830V • Current: 8.36 A / 4.82 A • Cos φ: 0.82 • Operating mode: S1 Ledpfxjy Rr Inj Amtoad • Degree of protection: IP55 • Standard: IEC 34-5 • Mounting: flange B5 • Shaft diameter: 28 mm • Shaft length: approx. 62 mm • Shaft with keyway • Aluminium housing Applications: • Pumps • Fans and blowers • Production machinery • Gearboxes and drives • Workshop equipment Condition: Used item, with normal signs of use and storage. The motor is in very good condition. Included: • Motor as shown in the photos

Condition: good (used), functionality: fully functional, Year of construction: 2000, Equipment: CE marking, PLS2500 2D laser with 2 x cutting table with usable area: 3140 x 1640 x h100mm, Axis stroke 3000x1500x150mm (XYZ), Maximum speed linear axes 40m/min (XY) and 20m/min (Z), Neck LGL France type NLEX 35, Sideros Engineering dust extraction system 3000W CO2 laser source DOCUMENTATION AVAILABLE. Machine dismantled and prepared for loading. It was in perfect working condition. Special price for immediate purchase. Laodpfxoxx R A Do Amtjd

Condition: excellent (used), Year of construction: 2019, fuel type: electric, color: blue, Weights Empty weight: 500 kg Functional Lifting capacity: 200 kg Working height: 450 cm CE mark: yes Condition Technical condition: very good Visual appearance: very good Other information Front tyres / undercarriage remaining: 100 Laodsxcuabjpfx Amted Rear tyres remaining : 100 Transport dimensions (LxWxH): 1,5x0,73 Additional information Please contact Sales Department Collé Sittard for more information

Condition: excellent (used), Year of construction: 2016, For sale: Prima Power BCe Smart 2220 (2016) panel bending machine. Main advantages: Servo-electric technology – up to 60% lower energy consumption and up to 70% lower maintenance costs High bending quality and precision Compact layout, operator-friendly design Semi-automatic operation, manual sheet loading/unloading Equipped with a safety system: laser scanners, light curtains Technical specifications: Max. bending length: 2250 mm Max. sheet length: 2850 mm Max. sheet width: 1500 mm Max. panel diagonal: 3000 mm Max. bending height: 204 mm Bending force: 32 t (320 kN) Pressing force: 52 t (510 kN) Processable steel thickness: up to 3.0 mm Minimum thickness: 0.5 mm Average power consumption: 4.0 kWh Additional equipment and features: Software: Master BendCam 2D, Tulus HMI Tool library, visual simulation of the bending process Remote diagnostics, user-friendly control interface Lowerable work surfaces – convenient parts handling Year: 2016 Condition: Used, well-maintained, connected, can be seen in operation. Lasdpfx Aoxfiw Temtod If you have any further questions, we will be happy to answer them.

Condition: used, total length: 1,500 mm, total width: 600 mm, total height: 2,000 mm, TECHNICAL DATA • Manufacturer: Metalsistem • Frame height: 2,000 mm • Shelf width: 1,500 mm • Frame depth: 600 mm • Shelf load capacity: 100 kg • Number of shelves per bay: 4 units Ledpfxoy D Tdko Amtjad • Finish: galvanized • Condition: used Large quantities available immediately. PRICES: • Starter bay: €74.00 net per unit • Add-on bay: €58.00 net per unit Bulk prices net per unit plus VAT: Starter bays: • 1 - 5 bays: €74.00 net per unit • 6 - 20 bays: €70.30 net per unit • 21 - 50 bays: €66.60 net per unit • from 51 bays: €62.69 net per unit Add-on bays: • 1 - 5 bays: €58.00 net per unit • 6 - 20 bays: €55.10 net per unit • 21 - 50 bays: €52.20 net per unit • from 51 bays: €49.30 net per unit YOUR CONTACTS: • Tanja Henkelmann • Rainer Nürenberg • Oliver Kopp TRANSPORT & ASSEMBLY We are happy to assist you with transport and assembly of the items. This article is available for collection. Delivery or shipping is possible at an additional cost. The extra charges depend on the delivery location and the volume of the shipment and can be quoted individually by us on request. TERMS OF PAYMENT Terms of payment are to be agreed upon in case of order. The price is a unit/net price or as specified in the description (plus VAT). Of course, you will receive an invoice stating the VAT separately. ABOUT US DLK, based in Nordhorn, trades in new and used products from the fields of warehouse logistics, conveyor technology, mezzanine floors, textile storage as well as machines for trade, industry and crafts. We constantly offer a wide range of attractive used equipment from various manufacturers/brands at competitive conditions. If you have any questions, please feel free to contact us. Four wins – The building blocks of DLK’s success – Storage Technology | Levelmaker® | Logistics | Solutions

Condition: excellent (used), For sale: Industrial pump from the renowned manufacturer Grundfos. Model SPK 4-8 – vertical multistage pump designed for clean liquids, coolants, industrial installations, and CNC machines. Ledpfjywpahsx Amtoad Technical data: Manufacturer: Grundfos Model: SPK 4-8 A-A-A Power: 0.55 kW Speed: 2850 rpm Capacity: approx. 3 m³/h Head: up to 28 m Liquid temperature: max 90°C Country of manufacture: Denmark Condition: Used, fully functional. Visible signs of use (abrasions, minor corrosion – see photos). A crack is visible near the nozzle on the casing – does not affect operation (buyer to verify).

Condition: new, Year of construction: 2026, functionality: fully functional, This system pertains to an industrial oven with overall dimensions of 5000 × 2500 × 3200 mm, engineered to provide high-performance thermal processing with maximum efficiency and reliability. The unit features a gas-fired boiler system integrated with three high-performance electric motors, ensuring optimal power delivery and consistent operation under demanding conditions. These are coupled with three Ø452 mm impellers, specifically selected to achieve superior airflow characteristics and maximize mechanical efficiency throughout the chamber. The oven structure is fully enclosed with 180 mm thick high-resistance insulated panels, designed to minimize thermal losses, ensure energy efficiency, and provide complete chamber sealing. This construction guarantees stable internal temperature conditions and optimal process control. Additionally, the system includes an advanced control panel interface that supplies all essential operational data and adjustment functions. The interface is developed with a focus on user accessibility and ease of operation, enabling standard personnel to efficiently manage the system without compromising precision or performance. Lajdoyzw E Hepfx Amted

Condition: new, Year of construction: 2026, functionality: fully functional, This solution is an innovative development by 3K, designed as a compact yet highly efficient laboratory furnace system with dimensions of 1000 × 1000 × 1200 mm. The unit utilizes a 0.75 kW electric motor paired with a 200 mm diameter backward-curved impeller, ensuring optimized airflow within the chamber. This design delivers uniform air circulation, promoting consistent thermal distribution and reliable process outcomes throughout the usable volume. From an engineering perspective, the system achieves stable aerodynamic properties with reduced turbulence and energy loss, ultimately enhancing operational efficiency and reliability. In summary, this is a compact, durable, and thoughtfully engineered furnace solution that fuses precise airflow control with proven performance—an ideal choice for demanding laboratory as well as light industrial operations. Laedpfsy A Eb Sex Amtod

Condition: new, Year of construction: 2026, functionality: fully functional, We hereby submit our offer for the supply of a large open-type industrial cabin designed for efficient air handling and ventilation applications. The offered machine is engineered for reliable operation and consistent performance in industrial environments. The cabin has overall dimensions of 2000 mm in length, 2050 mm in width, and 2850 mm in height. It is equipped with an electric motor rated at 3 kW, operating at a nominal speed of 2800 rpm. The motor is directly coupled to a dynamically balanced centrifugal impeller with a diameter of Ø452 mm, ensuring smooth operation, low vibration, and high mechanical efficiency. The system is designed to deliver an airflow capacity of 4000 m³/h, providing effective air extraction and circulation for various industrial processes. The open-type cabin design allows unobstructed access, ease of maintenance, and optimized airflow distribution, making it suitable for ventilation, fume extraction, and general industrial air handling applications. All mechanical and structural components are manufactured in accordance with standard industrial engineering practices to ensure durability, operational reliability, and long service life. The unit is designed for continuous-duty operation and complies with typical industrial safety and performance requirements. Laedoygh Alopfx Amtod This offer includes the complete machine as described above, fully assembled and ready for installation.

Condition: new, Year of construction: 2026, functionality: fully functional, We hereby submit our offer for the supply of a large open-type industrial cabin designed for high-efficiency air handling applications. The offered unit is engineered for continuous industrial operation and robust performance in demanding environments. The cabin has overall dimensions of 2,500 mm (length) x 2,250 mm (width) x 2,650 mm (height). It is equipped with a high-performance electric motor rated at 5.5 kW, running at a nominal speed of 2,800 rpm. The motor is directly coupled to a dynamically balanced centrifugal impeller with a diameter of Ø452 mm, ensuring stable operation, minimal vibration, and high aerodynamic efficiency. The system is designed for a maximum airflow of 7,000 m³/h, providing efficient air extraction and circulation for industrial processes. The open-type cabin configuration allows for easy access, straightforward installation, and optimal airflow distribution, making it ideal for applications such as ventilation, fume extraction, and general industrial air handling. All mechanical components are manufactured in accordance with standard industrial practices, ensuring durability, reliability, and long service life. The unit is suitable for continuous duty and complies with typical industrial safety and performance requirements. This offer includes the complete, fully assembled machine as specified above, ready for installation. Ljdpfxjyghwij Amtead

Condition: new, Year of construction: 2026, An open-type industrial booth engineered for efficient air extraction and ventilation in professional and industrial environments. The unit features overall dimensions of 1269 × 1367 × 2379 mm and is equipped with an electric motor rated at 1.1 kW operating at 2800 rpm. Air movement is provided by a Ø315 mm impeller, delivering an airflow capacity of 2600 m³/h. The booth is designed for reliable continuous operation, ensuring stable airflow performance and effective extraction, making it suitable for industrial applications that require controlled ventilation and air handling. Ledpfx Amoyghnnetead

Condition: new, Year of construction: 2026, It is a complete painting system, comprising the following components: 1) An oven with an air heater (the type of fuel can be adapted to the client's specifications). 2) A spray painting booth equipped with an absorbent filtration system suitable for even the most demanding paint applications. 3) Two parking areas where parts can be placed after painting or curing. 4) A rail system that enables easy movement of parts from one station to another. 5) A trolley for transporting the aforementioned parts. 6) A fully integrated and robust steel structure, engineered for high static stability and to minimize the risk of component failure. Lasdpfx Aeyaqt Tomtod From both a design and technical specification perspective, the above installation constitutes a comprehensive and autonomous electrostatic painting line. For limited systems, there is an offer for the complete package at 115,000 euros.

Year of construction: 2001, condition: good (used), 2 units of axially split spiral casing pumps with motor and baseplate. Last application as a turbine. !!! Performance curves as a pump and as a turbine are included as images !!! Lasdpfxed Nqi Re Amtod Manufacturer: KSB Type: Omega 350-360 A Flow rate: 1728 m³/h Head: 32 m Speed: 1450 rpm Year of manufacture: 2001 In turbine operation: Motor: VEM G21R 280 S4 Power: 75 kW at approximately 20 meters head and 1600 m³/h Voltage: 400 V In pump operation: Required shaft power: 177 kW Required electric motor: 200 kW NPSH value: 6.9 Efficiency: 85.28% Maximum operating temperature: 140°C Speed sensor: Yes !! Price per unit !!

Condition: like new (used), Year of construction: 2015, nominal power: 1,300 kW (1,767.51 HP), rotational speed (min.): 1,493 rpm, rotational speed (max.): 1,493 rpm, input voltage: 6,000 V, input frequency: 50 Hz, overall weight: 6,100 kg, 1 asynchronous electric motor Manufacturer: Reform Elektromotorenbau GmbH Type: Y2-500-4 Power: 1300 kW Speed: 1493 rpm Voltage: 6000 volts Current: 151.4 A cos Φ: 0.86 Insulation class: F Frequency: 50 Hz Protection class: IP55 Design: Foot (B3) Operating mode: S1 continuous operation Weight: 6100 kg Lsdpfx Asv I Alyemtjad Year of manufacture: 12/2015 Bearings: NU228C3 / 6030C3 and NU228C3 Cooling: Air Shaft height: 500 mm

Condition: good (used), Year of construction: 2012, The Prima Power Platino FIBER is in good condition, one owner, always serviced on time by Prima Power service representatives. For sale complete with storage. All documentation, service reports are included. Recently serviced with a full annual service. Laser cutting machine is connected, available for inspection, testing, in Ukmergė. Specification: Laodpjqi D Sqsfx Amtjd Model. Serial No.: 776 E 308 Year of manufacture: 2012 Made in: Italia Power: Working area (X x Y): Weight: Laser working hours: 61484 Cuts up to: 5 mm Location: Ukmergė Available for testing: Yes If you have any further questions, we will be happy to answer them.

Condition: like new (used), functionality: fully functional, Year of construction: 2018, operating hours: 5 h, load capacity: 30,000 kg, fuel type: electric, power: 0.8 kW (1.09 HP), Power Attack towing device for heavy-duty transport trolleys/tank rollers up to 30 tons/30,000 kg PowerAttack MTC 30 CC Cordless 0 - 20 m/min (forward and reverse drive) 24V three-phase motor (3,000 rpm) Operating time: 4h Charging time: 5h Length: 1650 mm 2-stage telescopic lever arm, each step 250 mm, maximum length 2150 mm Track width: 380 mm Laodpfx Ajy D Ea Rsmtjd Weight: 70 kg Scope of delivery includes a charger with 2 batteries, each with 22.5 Ah capacity. Operating duration approx. 4 hours. Charging time approx. 5 hours. Includes the accessories shown in the picture. NEW PRICE As new condition – see pictures Pick-up only by appointment in 75053 Gondelsheim Shipping via freight forwarder possible; please inquire with your ZIP code.

Condition: excellent (used), functionality: fully functional, Year of construction: 2023, operating hours: 10,691 h, control type: CNC control, laser type: fiber laser, laser hours: 10,691 h, power: 10 kW (13.60 HP), overall weight: 19,000 kg, total length: 19,900 mm, total width: 4,100 mm, total height: 2,730 mm, Equipment: dust extraction, 2023 Model Prima Power Laser Genius+ 2060 Machine Dimensions: 19,900 x 4,100 x 2,730 mm Machine Weight: 19,000 kg Total Operating Hours: 10,691 hours Regularly serviced and kept in clean working condition Technical Specifications 2000 x 6000 mm Dual Table System 10 kW Fiber Laser Working Area: 2200 mm x 6220 mm IPG Resonator Donaldson Dust Collection Unit Laodpfx Amoy Taaketed Linear Motor System on X and Y Axes Our machine is currently in active operation. You are welcome to visit our facility and inspect the machine in person. Transportation and shipping costs are the responsibility of the buyer.

Condition: new, Year of construction: 2026, overall weight: 3,900 kg, fuel type: diesel, tank capacity: 600 l, color: dark red, power: 2,000 kW (2,719.24 HP), output current: 360 A, output voltage: 400 V, output frequency: 50 Hz, type of output current: three-phase, nominal power: 200 kW (271.92 HP), nominal power (apparent): 250 kVA, continuous power: 200 kW (271.92 HP), continuous power (apparent): 250 kVA, total length: 4,000 mm, total width: 1,450 mm, total height: 2,300 mm, rotational speed (max.): 1,500 rpm, motor manufacturer: Perkins, type of cooling: water, Diesel generator set, 250 kVA Generator type: P250SSF Condition: New, 2026 Engine: Perkins 1206A-E70TAG2 Generator: Leroy Somer LSA 46.3 M7 Rated power (standby power/ESP): 275 kVA / 220 kW Rated power (prime/PRP): 250 kVA / 200 kW Rated power (continuous/COP): 200 kVA / 160 kW Rated voltage: 230/400 V Rated frequency: 50 Hz Control voltage: 12VDC Speed control: electric Voltage control: electric (AVR) Soundproofed, weatherproof Network configuration: TN-C Including control panel Including batteries (2 x 110Ah) Including integrated fuel tank (600 L) Including integrated spill containment basin for fuel and engine fluids Including circuit breaker (ABB, 4P) Including documentation/manual Including wiring diagram Warranty: 12 months or 2000 operating hours, whichever comes first. You can configure your generator individually and order numerous additional options: - Socket package 16A - 125A with RCD (residual current device) - Remote control - Insulation monitoring - Extended sound insulation, up to 65 dB/7m possible - Fully automatic automatic transfer switch (ATS) with automatic mains-generator changeover available on request. - Parallel operation with load sharing and peak load management (ComAP IG 1000 controller, VDE 4510 certified) Laedpfxsfxlddj Amtsd - CHP (combined heat and power) version - ATS for indoor installation with air ducts, supply and exhaust ventilation, etc. Manufactured in Germany Delivery throughout Germany possible for an additional charge. Contact us by email or call us, we will be happy to advise you and provide you with a non-binding offer.

Condition: used, 🔥 For Sale: HDG Compact 15–50 kW Biomass Boiler – Flexible and Compact Wood Chip Heating System 🔥 The HDG Compact 15–50 kW is a versatile biomass boiler, ideal for residential buildings, small commercial premises or agricultural applications. It is suitable for operation with wood chips and pellets, offering modular output and fully automatic operation within a space-saving design. — Key Features: 🌲 Fuel: Wood chips or pellets ⚡ Output: 15–50 kW 🧠 Fully automatic ignition, feeding and cleaning 🔧 Compact construction – perfect for plant rooms with limited space 🇩🇪 HDG Bavaria – Precision biomass technology made in Germany 📍 Location: Hungary, 9200 Mosonmagyaróvár, Kötöttárugyári út 22 (ProfiKazán) — 💼 Top Heating Systems – ProfiKazán Compact biomass heating systems with maximum flexibility. TOP HEATING SYSTEMS – Used heating units, boilers, heat pumps & accessories direct from stock We are a family business with around 20 years of experience in heating technology and operate a 1,500 m² warehouse in Mosonmagyaróvár, Hungary, with a constantly available stock of about 50–60 units. 📍 Location: Our warehouse is located in Mosonmagyaróvár, Hungary – approx. 15 km from the Austrian border and approx. 80 km from Vienna. Mosonmagyaróvár is the first major town on the Hungarian side after the Austrian border. 🔥 Our range includes, among others: • Wood chip boilers • Pellet boilers • Wood gasification boilers • Log wood boilers • Biomass boilers • Oil and gas boilers • Heat pumps • Thermal ventilators • Hot air blowers • Warm air heaters • Industrial heaters • Buffer tanks • Heat exchangers • Augers • Discharge systems Ledpfxewahhvs Amtsad • Burners • Pumps • Comprehensive heating accessories ⚙️ Accessories and Components: Additionally, we offer a large selection of accessories, including circulation pumps, plate heat exchangers and many more components – from private to industrial scale. 🏭 Brands in our range: Fröling, Hargassner, KWB, HDG, Binder, ETA, Herz, Guntamatic, Windhager, Viessmann, Buderus and many more. 🌐 Current Offers: You can find most of our current offers on our website: topheatingsystems.com We also have further units available that are not yet listed online. 📅 Viewing: Viewings can be arranged by appointment at our warehouse. If you are interested, please feel free to contact us – we look forward to helping you find the right solution.

Condition: used, For sale: MAWERA 470 kW Biomass Boiler – Robust Industrial Woodchip Heating System The MAWERA biomass boiler with a nominal heat output of 470 kW is ideally suited for industrial and agricultural heating applications with a consistently high heat demand. Austrian quality, durable construction, and efficient heat transfer are hallmarks of this boiler. --- Technical Specifications: • Fuel types: Woodchips, sawdust, planing shavings • Nominal heat output: 470 kW • Combustion system:   ◦ Feed auger for fuel transport   ◦ Combustion chamber with heat-resistant fireclay lining • Control & air supply:   ◦ Primary and secondary air controlled via motorized dampers and blowers   ◦ Temperature-based control featuring flue gas and combustion chamber sensors • Boiler design:   ◦ Water-bearing boiler with generously sized heat exchanger surface   ◦ Front and rear firebox doors for easy access and maintenance --- Location: Hungary, 9200 Mosonmagyaróvár, Kötöttárugyári út 22 (ProfiKazán) TOP HEATING SYSTEMS – Used heating equipment, boilers, heat pumps & accessories direct from stock We are a family-run business with around 20 years of experience in heating technology. Our 1,500 m² warehouse in Mosonmagyaróvár, Hungary, maintains a constantly available stock of approximately 50–60 units. 📍 Location: Our warehouse is located in Mosonmagyaróvár, Hungary – about 15 km from the Austrian border and 80 km from Vienna. Mosonmagyaróvár is the first major city on the Hungarian side after the Austrian border. 🔥 Our product range includes: • Woodchip boilers • Pellet boilers • Wood gasification boilers • Log wood boilers • Biomass boilers • Oil and gas boilers • Heat pumps • Thermo ventilators • Hot air blowers • Warm air heaters • Industrial heating systems • Buffer tanks • Heat exchangers • Conveyor augers • Automatic fuel extraction systems • Burners • Pumps • Comprehensive heating accessories ⚙️ Accessories and components: We also stock a wide selection of accessories, including circulation pumps, plate heat exchangers, and many other components—from domestic to industrial specifications. 🏭 Brands in our portfolio: Fröling, Hargassner, KWB, HDG, Binder, ETA, Herz, Guntamatic, Windhager, Viessmann, Buderus, and many more. 🌐 Current offers: Laedpfsmuzq Eex Amtjd Most of our current offers can be found on our website: topheatingsystems.com We also have additional equipment not yet listed online. 📅 Inspection: Viewing is available by appointment at our warehouse. If interested, please contact us—we are happy to assist you in finding the right solution.

Condition: excellent (used), Year of construction: 2011, functionality: fully functional, pressing force: 135 t, stroke length: 400 mm, operating speed: 200 mm/s, oil tank capacity: 150 l, overall weight: 9,500 kg, travel distance X-axis: 625 mm, controller manufacturer: ESA, controller model: ESA S550N, working width: 3,050 mm, bending force (max.): 135 t, back gauge speed R-axis: 50 mm/s, back gauge travel distance R-axis: 180 mm, back gauge travel distance Z-axis: 2,100 mm, control type: CNC control, degree of automation: automatic, number of support arms: 2, back gauge adjustment: CNC-controlled, number of axes: 8, type of crowning: CNC-controlled, Equipment: CE marking, documentation/manual, emergency stop, foot remote control, safety light barrier, A very well-equipped machine with Y1 / Y2 / X / X1 / R / Z1 / Z2 axes and hydraulic upper and lower tool clamping. The control unit has just been overhauled by the manufacturer, and the machine works flawlessly. Laodpfxswqhw Ej Amtjd

Condition: ready for operation (used), functionality: fully functional, Year of construction: 2005, operating hours: 19,670 h, controller model: PRIMACH 20L, laser power: 4,000 W, travel distance X-axis: 3,000 mm, travel distance Y-axis: 1,500 mm, travel distance Z-axis: 150 mm, TECHNICAL DETAILS X-axis travel: 3,000 mm Y-axis travel: 1,500 mm Z-axis travel: 150 mm Working area: 3,000 x 1,500 mm Laser source: CP 4000 Laser power: 4,000 W Lodey D Icuspfx Amtjad MACHINE DETAILS Control model: PRIMACH 20L EQUIPMENT Extraction system