What should you pay attention to before starting a 400 kW diesel generator?

Introduction What should you pay attention to before starting a 400 kW diesel generator? 1. Many factors affect the size of the generator set. Among them, the electric load characteristics of the system are an important factor. to use

What should you pay attention to before starting a 400 kW diesel generator?

1. Many factors affect the size of the generator set, among which the electrical load characteristics of the system are an important factor. Users should carefully consider the following points before choosing a diesel generator:

a. Whether using it as a regular generator or a backup generator.

b. The allowable voltage drop of the system.

c. Consider increased system power consumption in the future.

d. The engine starting situation.

2. Unit Power Calibration

The diesel generator usually provided to users is a commonly used unit, which can power the load at rated power for 12 consecutive hours (including 1 hour at 110% of rated power) operating capacity). When mains power outages are less frequent and the power supply timepower is not long, users can use the generator whose power is calibrated as a backup unit. It must operate on average at 80% of maximum power for a maximum of 200 hours per year and at 100% of maximum power for a maximum of 25 hours per year.

3. Issues to pay attention to when matching generator sets and three-phase motors

The most commonly used in mechanical engineering is three-phase induction motor. Due to their starting characteristics, these motors are connected directly to the electrical system. If started directly online, a peak current of up to 6 times the motor's rated current will be generated. Once the soft start device is configured, the starting current will be very stable and will not impact the generator set. When choosing the capacity of the generator set and three-phase motor, it is recommended to consider un safety factor of 1.5, i.e. 1.5 times the motor capacity (must be in soft start mode).

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