How the step down silicon chain on the DC screen is bucked

Utilizes a high-power rectifier diode.

The PN junction forward voltage drop is superimposed to produce an adjusted voltage drop, and the silicon chain controller detects the bus voltage and compares it with the set value, when the bus voltage is higher (lower) than (below) the upper (lower) limit of the set value, the controller sends a signal to drive the actuation relay.

When the silicon chain is working normally, the "open circuit protection circuit" always monitors the status of the silicon chain, and when the silicon chain has an open circuit fault, the "open circuit protection circuit" immediately acts, shorting the open part of the silicon chain, and the remaining part of the silicon chain can still work normally, and still has the function of "manual" and "automatic" adjustment. At the same time, the alarm circuit activates and sends out an alarm signal for the silicon chain open circuit (relay contact).

Technical parameters and conditions of use:

Buck range: 0 45V;

Current rating. 5～200a；

Voltage regulation accuracy: 2%;

Buck grouping: 5 poles or 7 poles;

Ambient temperature: 10 +40 ;

Relative humidity. Altitude.

2000 meters;

There is no serious conductive dust in the air, Egyptian corrosive gas;

No violent vibrations.

Silicon link break protection device, which includes a voltage regulator tube.

and thyristor module, in which the voltage regulator tube is connected in parallel with the silicon chain, and the trigger pole of the thyristor module is connected in parallel, and the thyristor module is connected to both ends of the silicon chain. This device uses the terminal voltage of each stage of the silicon chain as the main criterion for whether the silicon chain is broken, which is accurate and reliable.

Taking advantage of the fast conduction speed of the thyristor, the break point can be shorted in milliseconds, and the load on the control bus will not be detected by the power loss. Only when the silicon chain is overhauled, the current passing through the SCR naturally returns to zero, and the SCR resumes cut-off, thus ensuring that the circuit where the silicon chain is located will not be broken again.

1. There is a voltage drop in the diode conduction, and the step-down of the step-down silicon chain is like the principle of multiple diodes strung together, and the number of different tap strings is different, and the reduced voltage is different. When choosing a silicon chain, pay attention to the rated current and voltage capacity.

2. DC screen is the abbreviation of DC power supply operating system. The general name is intelligent maintenance-free DC power supply screen, referred to as DC screen, the general model is GZDW, and the DC screen is used to ** this DC power supply.

We know that there is a voltage drop in the diode conduction, and the step-down of the step-down silicon chain is like the principle of multiple diodes strung together, and the number of different tap strings is different, and the reduced voltage is different. When choosing a silicon chain, pay attention to the rated current and voltage capacity.

Summary. Hello, for your question The solution to the DC screen step-down silicon fault: The solution to the DC screen step-down silicon fault is that the maximum service life of the DC screen is eight years, and various electrical switches, relays, contactors, etc. fail when in use, and the solution is to replace or adjust them directly.

Hello, for your question The solution to the DC screen step-down silicon failure: The solution to the DC screen step-down silicon fault is that the maximum service life of the DC screen is eight years, and various electrical switches, rolling code relays, contactors, etc. fail when in use, and the solution is to replace or adjust them directly.

DC panel is a new type of DC system for digital control, protection, management and measurement. Debugging of the DC screen, turn on the AC power supply to test whether the AC dual power supply cut-off standby device is working normally, and whether the lower port voltage of the dual power switching device is normal. After the AC part is tested normally, the AC switch of the charging module is closed in turn, and the module is observed to be positive and bad, and the output voltage and polarity of the module are measured.

After the DC screen charging module is started normally and the output voltage and polarity are correct, turn on the battery pack switch and each bus switch, measure whether the voltage and polarity of the lower port, mother closure and control mother of the battery pack switch are correct, and observe whether the voltmeter indicates whether the direction is reversed.

Hello dear dear, I am happy to serve you: the solution to the DC screen step-down silicon fault DC screen rectifier module failure, first check whether the voltage on the input side is normal, and then see if there is a short circuit on the battery side, and finally see if the rectifier module is broken, and replace it if it is broken. (1) Check whether the wiring is correct and reliable; (2) Check whether the working state of the control module is correct; (3) Check the status of the empty opening and whether the contact is correct.

The output current of the charging module = common load + backup, C10 refers to the 10-hour discharge capacity of the battery, and the 200Ah battery is now mostly configured with 4 10A modules, 1-56-78 Thank you for your question about destroying the group, the above is my reply, I hope it can help you.