How to choose the capacity of Volvo diesel generator

When purchasing a generator to use as a backup power source, it is important to know how to choose a suitable generator and what capacity to choose. If the capacity of the generator is not enough, it will not produce enough power at the start.

How to choose the capacity of diesel generator

1. Check the capacity of the generator according to the maximum starting need of a motor, that is, the rated power of the generator; Maximum starting multiple of one motor. In different starting modes, the generator power is the minimum multiple of the started motor power.

2. The general fire pump can be selected by 15% instantaneous pressure drop, and the generator capacity can be checked by △ start. The capacity of the generator is sufficient, the capacity of the water pump is small, and the starting is not often. When the pressure drop of direct starting is less than 15%, the direct starting can be adopted.

3. The capacity of a single diesel generator should not exceed 1000kW. If the capacity is larger, multiple generators can be selected.

The effect of diesel generator capacity

1, the capacity of the diesel generator set, in addition to meet the needs of stable calculation load, must also carry out the voltage drop check when the motor starts, that is, when starting any motor, its terminal allowable voltage drop should be within the specified range.

1. Influence of voltage drop on distribution line between generator and motor. In other words, the generator terminal voltage is equal to the sum of the motor terminal voltage and line voltage drop. Many literatures believe that the motor should be started in sequence according to the capacity size, so as to reduce the generator capacity.

However, in the national standard atlas and engineering drawings, the secondary circuit diagram of the motor starting in sequence is rarely seen. What's more, starting in sequence often contradicts some fire control requirements. Therefore, it is recommended to reduce the capacity of the generator and not rely on the motor to start in succession.

Jiangsu Meao Power Technology Co., Ltd. is an important manufacturer of diesel generators. The company mainly manufactures and sells diesel generator sets with power of 3-3000kW, mobile power station of 24-600kW, Marine emergency diesel generator set of 24-800kW, gas generator set, heavy oil generator set and all kinds of imported series, special series (trailer, static speaker, mobile lighthouse, container, etc.) diesel generator At the same time, we are engaged in generator set maintenance and after-sale service of generator set accessories.