Choosing the right generator set

发电机组是用于产生电力的装置。它由发电机和安装在一起的发动机组成。对于任何类型的应用,可以使用发电机组以满足能量需求,可靠有效地满足能量需求。

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  • How to choose a generator set?

    Caterpillar Electric Power generator set
    Caterpillar Electric Power generator set

    In order to choose a generator set adapted to your needs, you must know thetotal power requiredby the equipment to be connected to it and thetype of power supply(single-phase or three-phase). You will also need to determine if you need amobile or stationary组。It will also be necessary to define themotor type例如,如果您正在寻找一个小型小型发电机组,如果您正在寻找大型发电机组或燃气或涡轮发动机,则柴油发动机,如果该能源可用,并且您想要更经济,更少污染组。最后,您需要定义是否需要电压调节。该系统平滑输出电压以避免损坏将连接到发电机组的电子设备。

    Selection criteria:

    • Total power
    • Power supply
    • 电机类型
    • Portability
  • How much power should your generator set have?

    确定你的发电机组需要多大的权力ds, you must know not only the设备的标称力量这将同时运作,还可以运行峰值功耗,特别是在启动时。例如,电动机可以在启动时消耗高达三倍的标称电源。发电机组必须能够提供需要同时启动的所有设备所消耗的峰值功率。对于电阻设备(照明,电视,小型电器等),在确定发电机组的功率时,必须添加30%的安全系数。对于电感设备(即电动机),它们的标称电源必须乘以3,以考虑峰值消耗。

    对于提供三相电源的发电机组,功率以千伏安培(KVA)表示:这被称为apparent power。For the ones that supply direct current or single-phase power, the power is indicated in kW: this is referred to asactive power

    该difference between kVA and kW comes from the phase shift between each phase. This phase shift is called cos φ (cosine phi). To obtain the active power of a generator set whose apparent power and cos φ you know, multiply these two values, for example: 1 kVA x 0.8 = 800 W (as a general rule, the cos φ of generator sets is 0.8).

    Generally, generator set manufacturers indicate thecontinuous power最大功率that corresponds with an overload of about 20% of the continuous power for a limited time.

  • What type of motor should you choose for your generator set?

    FPT Industrial diesel generator set
    FPT Industrial diesel generator set

    发电机组配备内燃机。根据您的需求和您提供的燃料类型,您可以选择汽油,柴油或燃气发动机:

    • Gasoline generator sets通常是紧凑,更安静和多功能。通常,这些发电机组具有较低的功率,高达6 kW,并提供单相电流。
    • Diesel generator sets更适合于延长甚至连续使用户外,例如施工地点。它们比汽油发电机组等效功率更经济。这些发电机组可以提供单相,三相或混合电流。
    • 如果您有气体供应,您可能需要考虑a gas generator set因为它们更经济,更容易使用,比汽油或柴油的更容易使用,更安静,更少的污染。可以找到最多12千瓦的电力。这些发电机组可以提供单相或三相电流。
    • For more power, you can turn toturbine generator sets。当您需要恒定的电力供应时,这些发电机组都是有利的,并且具有最佳效率,以及用于快速充电。

    电机类型s:

    • Diesel
    • Gasoline
    • Gas
    • Gas turbine
  • How are generator sets started?

    Smaller generator sets, up to 3 kW, can be equipped with amanual starting系统,发射器。如果您必须经常使用发电机集,我们不推荐此类系统。

    Most more powerful generator sets are equipped instead with anelectric starterconnected to a battery.

  • 单相或三相发生器组?

    西门子三相发电机组
    西门子三相发电机组

    For domestic use, up to 18 kW, you will need asingle-phase generator set, except possibly for some very energy-intensive equipment such as heat pumps.

    对于专业用途,您可能需要一个三相发生器组提供需要更多功率的机器。

    一些三相发生器组配有单相出口。无论出口的数量如何,重要的是尊重generator set’s最大功率。When the generator set is equipped with one or more single-phase outlets, it is important to respect the balance between the phases by distributing the devices over the three outlets according to the power consumed by each device.

  • 其他特征对考虑有何重要?

    其他功能可以帮助您选择生成器集:

    • 电压调节: the cheapest generator sets are not equipped with an output voltage regulation system. Without this regulation system, equipment connected to the generator set can be damaged, especially if its electronic components are sensitive to overvoltages. We therefore advise you to check that your generator set be equipped with anautomatic voltage regulator (AVR)to avoid damaging your equipment.
    • “逆变器”技术that allows you to adapt the speed of the motor to the equipment consumption and also allows you to optimize the use of your generator set.
    • 冷却系统:low-power generator sets are air-cooled and not designed to run all the time. The manufacturer may indicate the total autonomy with the tank full, but also the continuous autonomy time and the rest time necessary for cooling between two uses. Larger models can be equipped with a liquid cooling system.
    • Portability: the smallest generator sets are generally便携式模型,重约20公斤。考虑略大的模型mobile并配有轮子,所以它们可以移动。高功率发生器组可用transportable型号:它们的结构设计为可与叉车移动。他们也可以containerized。Some large powerful generator sets are not designed to be moved after installation, they are静止楷模。
    • 发电机组的noise level可以是舒适的用户或其周围的人的决定因素。高功率发生器组产生的噪声可以容易地升至100分贝(DBA)。如果噪音水平是您的重要因素,您可能需要考虑使用a隔音发电机组。
  • How much does a generator set cost?

    该price of a generator set depends on various parameters indicated below, but also on the options and configurations available.

    电机类型 Nominal power 输出 Price range
    Gasoline 0.。7 to 2 kW Single-phase 200至1,500欧元
    汽油或柴油机 3到10 kW
    (3.75 to 12.5 kVA with cos φ = 0.8)
    Single-phase /Three-phase 300 to 4,000 euros
    Diesel 12 to 250 kVA Three-phase 4,000 to 20,000 euros
    Gas 7到16 kW Single-phase 4,000 to 8,000 euros
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2 comments
  • 我从来没有意识到户外发电机有许多不同的选择,可以选择和选择最好的方法之一是最好通过了解我们需要多少马力。我的妻子正计划在带着仙女的灯光下安装一个露台,她需要一个户外发电机来运作它。我将把她带到当地的商店,与经验丰富的专业人士识别哪些发电机适合她最好的。

  • Kristofer Van Wagner says:

    该other day while my family and I were out having dinner, I overheard the restaurant manager looking for a commercial generator to have installed for the restaurant in case of a power disrupt. I appreciate that this post pointed out it is important to confirm how much power the generator needs before purchasing it as it impacts the generator’s efficiency. If I happen to walk past the restaurant later this week, I will relay this information to the manager.

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