Skip to main content

Commissioning and Operation of Siemens Generator


4.4 Commissioning and operation of Siemens generator (alternator)

4.4.1 Commissioning

The following checks are essential before the driving machine is commissioned;

- The generator load must be disconnected.
- the insulation resistance must have at least the specified value.
- All the safety rules for operation of the generating set must be observed.
- The protective earth conductor must be connected.

After these checks, the complete generating sets can be started up in the accordance with the instructions.
Providing the generator has not been out of service for more than three months, a brief visual inspection is sufficient before is started up again.

4.4.2 Changing the direction of rotation

The generator is equipped with one fan for both directions of rotation. If the direction of rotation is changed, the phase sequence at the main terminal is also changed.

4.4.3 Operation

Note: Deviations from the normal performance (higher power input, higher temperatures of vibrations, unusual noises or odours, reactions by monitoring equipment etc.) indicate that proper function of the unit is impaired. In order to avoid faults, which might directly or indirectly cause serious damage to property or injure to persons, the responsible maintenance personnel must be notified immediately.

The generator is excited automatically. The following points should be noted:

 - The desired terminal voltage can be set with the potentiometer as soon as the rated speed is reached.
- The generator can be fully loaded as soon as the rated speed is reached.
The following operation data must be checked:

- The current, to ensure that the generator is not overloaded.
- The load balance of the individual phases.
- The frequency.
- Heating of the bearings, cooling of the machine and mechanical running.

In order to avoid resonance phenomena, it is important to ensure that the natural electromechanical frequencies of the generator do not coincide with the mechanical excitation frequencies of the prime mover.

4.4.4 monitoring during operation

The generator functions must be monitored during operation to ensure that they are not impaired by faults. Any defects which are detected must be remedied immediately. In particular, the cleanliness of the generator, the load as specified on the rating plate, smooth vibration-free running, the perfect condition of the bearings and the tightness of the terminals must be checked. If the generator has been out of service for a long time, the insulation resistance of the windings, the conditions of the lubricant in the bearings, the tightness of the terminal screws and the mechanical coupling to the prime mover must be checked before is started up again.

4.4.5 Taking out of service

The load must always be disconnected before the generator is shut down. The procedure described in the instructions for the complete generating set must then be followed.
标签：

Comments

Post a Comment

Popular posts from this blog

Baudouan Weichai 1530KW Diesel Generator Set 16M33 Series Engine

Weichai is the earliest enterprise in China to develop and produce generator sets, with a production history of over 60 years. It mainly produces land - based and marine generator sets, including diesel - type and gas - type units. Weichai's M33 series engines include 6M33, 12M33, and 16M33 diesel engines. These are high - power high - speed diesel engines independently developed by Weichai based on the mature product platform of Baudouin's M26 series in France. The development of this series of models fills the gap in Weichai's high - speed diesel engines for power generation in the 500 - 1530kW power range, enabling effective competition with foreign brands. The M33 series Weichai engines inherit and carry forward the advanced product development and design concepts of the French Baudouin M26. They are benchmarked against international advanced engines, effectively avoiding various design defects. The product development emphasizes high reliability and low emissions. Th...
Post a Comment
Read more

How to Connect A Diesel Generator to Your House?

Diesel generators are fuel-efficient and reliable, which can almost meet the power needs of any application. If you want to power the whole house during power shortages, it’s a good choice to choose a diesel generator set as the backup electricity supply. But how to connect a diesel generator to your house? Read on and you will find the answer. Options to connect a diesel generator to your home   Keep in mind that never plug your generator directly into the mains, or it will cause back feeding, damage your appliances and be life-threatening for utility workers. Generally, you can choose to connect a generator to your house by using extension cords or a transfer switch. Understanding the difference between them is helpful for you to choose the right type. Extension cords   Typically, extension cords are suitable for smaller diesel generators that used for short term. They require no installation and are cost-effective. If you need to power only some basic appliances such as...
Post a Comment
Read more

What Should You Pay Attention to in Routine Maintenance of Diesel Generator Sets

In modern society, the stability of power supply is directly related to the operation efficiency of enterprises and people's quality of life. Diesel generators have become an indispensable backup power supply or main power source in various industries due to their high efficiency, durability and reliability. However, to ensure the smooth operation and optimal performance of the generator sets, regular maintenance is essential. Here is what you need to pay attention to in the routine maintenance of diesel generators. Keep your generator clean It’s important to keep the generator’s exterior and the generator room clean. Regularly remove any dirt, dust, or debris that may accumulate to on the generator’s surface. This is not only for the sake of beauty, but also for the smooth operation of the unit. Cleaning the generator’s exterior, air intake vents, exhaust outlets and generator room can effectively reduce the risk of generator overheating. In addition, check if the connection bol...
Post a Comment
Read more