I am selling a three-phase asynchronous generator alternator ANSALDO SISTEMI INDUSTRIALI. IT HAS ONLY WORKED 2000 HOURS. COMPLETE WITH INSULATION AND COVERING. Type: GSCB 1120 Z4 N°: 8006162 YEAR: 2001 POWER: 29680 KWA SPEED: 1500 RPM FREQUENCY: 50+-2.0% HZ 11000+-5% V ECC. 81.9 V ESCAPE SPEED: 1800 RPM CURRENT: 1558 A ECC. 7.3 A COS § 0.80 WEIGHT 52600 KG

Technical Data Sheet and Detailed Description of the Ansaldo Sistemi Industriali GSCB 1120 Z4 Alternator

1. General Description

The Ansaldo Sistemi Industriali GSCB 1120 Z4 alternator is a powerful industrial synchronous generator designed for applications requiring high performance and reliability. Built in 2001, this alternator is specifically designed for high-energy industrial environments and has only been in operation for 2,000 hours, making it an excellent choice for those seeking a high-quality used unit. With a rated power of 29,680 kVA and a rotation speed of 1,500 rpm, it is ideal for powering large systems or for use in critical situations where power continuity is essential. It comes complete with insulation and a cover to ensure safe, weather-protected operation.

2. Technical Specifications

• Type: GSCB 1120 Z4
• Serial number: 8006162
• Year of Construction: 2001
• Rated Power: 29,680 kVA
• Rotation Speed: 1500 rpm
• Frequency: 50 Hz ± 2.0%
• Output Voltage: 11,000 V ± 5%
• Rated Current: 1558 A
• Cos φ: 0,80
• Excitation Current: 7.3 A
• Excitation Voltage: 81.9 V
• Escape Speed: 1800 rpm
• Weight: 52,600 kg
• Working Hours: 2000 hours
• Insulation: Yes, complete
• Coverage: Yes, complete

3. Composition of the Machine

The Ansaldo GSCB 1120 Z4 alternator consists of the following main components:

• Stator: Fixed part of the generator, contains the windings that produce the output voltage when the rotor rotates.
• Rotor: Moving part of the generator, connected to the excitation system to create the rotating magnetic field necessary for power generation.
• Excitation System: Includes the exciter and the electronic components that regulate the rotor excitation current to maintain a stable output voltage.
• Bearings: Support the rotor and reduce friction during rotation, ensuring smooth operation.
• Cooling System: Complete with insulation to keep the operating temperature within safe limits, preventing overheating.
• Control Panel: Includes all devices for monitoring and controlling the generator, such as voltmeters, ammeters, and protection systems.
• Frame and Structure: Robust construction that supports the entire system and protects it from external stresses.

4. Use and Optimization

How to use:

1. Installation:

   • The alternator must be mounted on a stable, level base, with adequate ventilation and space for cooling.
   • Connect the output terminals to the power distribution systems.
   • Connect the excitation system to the control panel.

2. Start:

   • Start the excitation system to create the magnetic field in the rotor.
   • Bring the alternator to the rated speed of 1500 rpm.
   • Monitor the parameters via the control panel to ensure that the voltage and frequency are stable.

3. Operation:

   • The alternator starts generating power when the rotor rotates within the stator's magnetic field.
   • Continuously monitor current, voltage and operating temperature to avoid overload or overheating.
   • The power output can be adjusted via the excitation system by changing the rotor excitation current.

When to use it:

• Large Plant Power: Ideal for factories, power plants or large industrial facilities that require a reliable and powerful power source.
• Critical Situations: Perfect as a backup generator in case of interruptions in the main power grid.
• Environments with Constant Energy Demands: Applications where a continuous and stable flow of energy is required to operate industrial machinery.

Materials it works with:

• Electrical Energy: Being a generator, the alternator converts mechanical energy into electrical energy, so it does not "work" materials in the traditional sense, but produces electricity to power various types of machinery and industrial equipment.

Formulas for process optimization:

• Apparent Power (S):
  S=V×IS = V \times I
  $S$ $=$ $V$ $\times$ $I$ Where:

  • SS $S$ is the apparent power in kVA,
  • VV $V$ is the output voltage in kV,
  • II $I$ is the current in A.

• Reactive Power (Q):
  Q=S×sin⁡(θ)Q = S \times \sin(\theta)
  $Q$ $=$ $S$ $\times$ $\sin$ $($ $\theta$ $)$ Where:

  • QQ $Q$ is the reactive power in kVAR,
  • θ\theta $\theta$ is the phase shift angle between voltage and current.

• Active Power (P):
  P=S×cos⁡(θ)P = S \times \cos(\theta)
  $P$ $=$ $S$ $\times$ $\cos$ $($ $\theta$ $)$ Where:

  • PP $P$ is the active power in kW,
  • cos⁡(θ)\cos(\theta) $\cos$ $($ $\theta$ $)$ is the power factor.

5. Maintenance

Ordinary Maintenance:

• Bearing Inspection: Check the rotor bearings regularly to ensure they are well lubricated and free from excessive wear.
• Cleaning the Cooling System: Make sure the cooling system is clean and free from obstructions to avoid overheating.
• Excitation System Check: Monitor the functionality of the excitation system and check the current and voltage values ​​to maintain stable operation.

Extraordinary Maintenance:

• Insulation Check: Regularly check the integrity of the insulation to prevent heat loss and ensure operational safety.
• Control Panel Calibration: Perform periodic control panel calibrations to ensure accurate readings and timely response of the protection system.

6. Alternatives and Considerations for Buying Used

Alternatives:

• New Generation Electric Generators: Consider newer electric generators that offer superior energy efficiency and advanced digital control systems.
• Renewably Powered Generators: For applications where sustainability is a priority, generators that use renewable energy sources (such as wind turbines or photovoltaic systems) could be a valid alternative.

Choosing a Used Car:

• Working Hours: Carefully check the number of operating hours, preferring machines with few hours of use, as in the case of this Ansaldo.
• Insulation and Cover Condition: Check that the insulation and cover are in excellent condition, as these elements are crucial to the safe operation of the machine.
• Documentation and Maintenance History: Request the maintenance booklet and check that all necessary work has been performed to ensure the machine is in top condition.

Why it is better to buy used:

• Cost Savings: Buying a used alternator can lead to significant savings over buying a new one, especially if the car has been used little.
• Proven Reliability: A well-maintained, used alternator with low running hours offers the same reliability as a new one, at a lower cost.
• Ready Availability: Unlike a new model that may require waiting times for production and delivery, a used model is immediately available and operational.

The Ansaldo Sistemi Industriali GSCB 1120 Z4 is an excellent solution for those seeking a powerful and reliable generator, suitable for a wide range of industrial applications. Thanks to its robust construction, low operating hours, and insulation and cover, it represents a favorable opportunity for those looking to purchase a high-quality used machine, confident in the knowledge that they can count on high performance and longevity.