What is continuous output power and peak output power?
Continuous output power, also known as rated output power, is the maximum amount of power that an inverter can supply continuously without overheating or shutting down. This is the stable and reliable power output that the inverter can maintain over an extended period. It is the power level that should match the continuous power requirements of the appliances you plan to run. For example, if you are powering a set of devices that require a total of 1000W continuously, you need an inverter with at least 1000W continuous output power.
Peak output power, or surge power, refers to the maximum power level that an inverter can supply for a short duration to handle initial power surges. This usually happens when starting appliances with electric motors or compressors. Some appliances, such as refrigerators, washing machines, and electric drills, require a higher current to start than to run. So for the sine wave inverter, there is a concept of peak output power. The peak output power is typically about twice the continuous output power, but it must be sufficient to handle the initial surge required by these appliances. For instance, an air conditioner or refrigerator might need 3-9 times their normal operating current at startup.
- Importance of Understanding Both Powers
To ensure the proper functioning of your appliances, the inverter must be capable of handling the peak power demands of your devices. If the peak power of the inverter is too low, it may not start the appliance, causing operational issues or potential damage to both the inverter and the appliance. When selecting an inverter, it is crucial to consider both its continuous and peak output powers. The continuous output power must meet or exceed the total wattage of all devices you plan to run simultaneously, while the peak output power must be sufficient to handle the highest surge current of any device you intend to start.
By understanding these concepts, you can make an informed decision when choosing an inverter, ensuring that it can handle both the steady-state and startup power requirements of your appliances.