What impact will a damaged delta rectifier bridge have on the circuit?

Infineon / Mitsubishi / Fuji / Semikron / Eupec / IXYS

What impact will a damaged delta rectifier bridge have on the circuit?

Posted Date: 2024-02-06

The triangular rectifier bridge is an electronic component that seals several rectifier tubes in a shell to form a complete rectifier circuit. This kind of rectifier bridge is usually composed of three rectifier tubes connected in a certain way, and has the functions of rectification and filtering.

The advantages of the triangular rectifier bridge are small size, light weight and easy use, so it is widely used in various electronic equipment and instruments.

How to measure the quality of delta rectifier bridge

The method to measure the quality of the delta rectifier bridge is as follows:

Use a multimeter to measure the positive and negative poles of the delta rectifier bridge, and adjust the multimeter to the diode test setting.

Connect the red test lead to the anode of the rectifier bridge and the black test lead to the cathode, and measure the forward resistance value. Normally, the forward resistance value should be hundreds of ohms to several K, and the reverse resistance value should be infinite. If the measured forward resistance value is 0 or infinite, it means that the rectifier bridge is damaged.

Follow the same method to measure the forward and reverse resistance values ​​of the other two rectifier tubes to judge the quality of the rectifier bridge.

When measuring the quality of the rectifier bridge, ensure that the power supply is disconnected to avoid electric shock accidents during the measurement process.

What impact will a damaged delta rectifier bridge have on the circuit?

Damage to the delta rectifier bridge will have the following effects on the circuit:

Failure to rectify: If the rectifier bridge is damaged, the normal rectification process will not be possible, resulting in an output voltage of zero or very low.

Unstable output: The function of the rectifier bridge is to convert alternating current into direct current. If the rectifier bridge is damaged, the output voltage will be unstable, which may cause power interruption or voltage fluctuation.

Current Imbalance: Damage to one or more diodes in the rectifier bridge can cause a current imbalance, which can cause uneven current distribution in the circuit, causing other components to be overloaded or damaged.

Overheating: A damaged rectifier bridge may generate excessive heat, causing the rectifier bridge and surrounding circuits to overheat, damaging other components or causing safety issues.

Circuit interruption: If there is a short circuit inside the rectifier bridge, it may cause a short circuit and cause the entire circuit to fail to work.

Damage to the delta rectifier bridge will affect the normal operation of the entire circuit, which may lead to power interruption, voltage fluctuation, component overload and other faults. During circuit maintenance and inspection, it is necessary to regularly check the working status of the rectifier bridge, and promptly discover and replace damaged rectifier bridges to ensure the normal operation of the circuit.

The difference between three-legged rectifier bridge and four-legged rectifier bridge

Here are some tips for wiring overload protection relays:

1. Read the instructions carefully: Before wiring the overload protection relay, make sure to read and understand the instructions of the device in detail. The instructions will provide correct wiring diagrams and related requirements to ensure correct and safe wiring.

2. Correctly select the cable size: Choose the appropriate cable size based on the rated current of the device and the wiring length. Choosing a cable that is too small may cause the cable to overheat and become damaged, and choosing a cable that is too large may increase cost and take up space.

3. Distinguish between the power input and load output: Make sure to correctly distinguish the power input and load output, and make correct connections according to the actual situation. The power input is usually connected to the main power supply, and the load output is connected to the equipment that needs to be protected.

4. Use appropriate terminal blocks: When wiring, use appropriate terminal blocks and connectors to ensure good connections and reliability. It is recommended to use screw terminals, crimp terminals or plug connectors.

5. Correct selection and fixation of terminal blocks: According to the wiring requirements, select the appropriate terminal type, such as pin type, welding type or screw terminal. Make sure the terminal is securely fastened so that it can withstand the pull of the cable.

6. Pay attention to insulation and encapsulation: Ensure the correct selection and use of insulating sleeves, insulating caps or insulating tape during wiring to protect wiring points from the risk of short circuit and electric shock.

7. Verify wiring and connections: After completing the wiring, use a multimeter or related test equipment to verify and test the wiring and connections to ensure that the wiring is correct. This can detect wiring errors or circuit faults in advance.

8. Debugging and testing: After completing the wiring, test and debug the equipment to ensure that the overload protection relay can accurately monitor and respond to current overload conditions and correctly cut off the circuit.

Review Editor: Huang Fei

#impact #damaged #delta #rectifier #bridge #circuit