Serial and Parallel Connection of DC Power Supply

In the electricity experiment, sometimes we need more current or voltage power supply, in this condition, several power supplies can be parallel or serial connected to realize this function. It can be applied in many conditions, such as high power load is required in the electricity circuit, and redundant power supplies are required to strengthen the system's stability. The parallel or serial connection of power supplies can increase the current or voltage output in the electricity circuit.

Along with the technology development, smaller size, and multichannel power supply can meet nowadays engineers and teaching requirements. Suin SK3323/3325/3503 three channels programmable DC power supply is just one example.

Please see the below pictures of the parallel and serial connection of SK3323 and pay attention to some points during the experiment.

1. Connection way. Parallel and serial connection are two normal connection ways.

During serial, the positive terminal of channel 1 should be connected to the negative terminal of channel 2, the current of the serial connection is the same as that in independent channel output, while the voltage is the sum of two channels, which solves the high voltage requirement.

 

Serial connection on SK3323

 

In parallel, you just need to connect as the independent channel output, and press 【PARA】 to enter the parallel connection way. The voltage in parallel remains the same as that in independent channel output, but the current is the sum of two channels, which solves the high current requirement.

 

Parallel connection on SK3323

 

2. Over voltage and over current protection. Parallel or serial connection power supply should have proper control and protection to the current and voltage to make sure the power supply running normally without making any injury to the operator or the instruments. Suin SK3323/3325/3503 power supply has such a function too.

 

If you are interested in it or have any questions, please do not hesitate to contact Suin.

Difference between Logger and Monitor of SA2200

With the increasing power quality problem, more and more people pay attention to power quality. To know more about the power quality, it is necessary to measure, collect, and analyze the data of the power grid.

A logger can record basic parameters such as current, voltage, and power factor, and can also record various abnormal events of power quality, such as voltage fluctuations, harmonics, unbalance, and so on.

Monitor is the real-time measurement and data collection of various power quality indicators to ensure the observation, recording, and dynamic analysis of the power system, and the comprehensive evaluation of power quality indicators to optimize the monitoring system of the whole system. According to the specific characteristics of various indicators, the power quality problem is detected by layers, and a variety of disturbance information is identified, extracted, and analyzed, which provides a credible basis for the development of specific measures to improve power quality and control grid pollution.

The difference between the two is that the Logger records more parameters, and the recording interval can be set but the recording time is shorter, while the power quality monitoring is to monitor specific parameters and the recording time is longer.

Take our Class A power quality analyzer SA2200 as an example:

the recorder function, the shortest time interval can be set to 1s, the duration can also be set to 2 hours, and you can choose the parameters of the record, shown in Fig 2.

 

Fig 1. Logger

 

Fig 2. Parameters of Logger

The measurement parameters of the Monitor are default, the shortest measurement time is 2 hours, and the measurement interval cannot be set, as shown in Fig 3.

 

Fig 3. Monitor

If you want to know more details about these two functions, welcome to inquire.