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Isolated safety barrier manufacturer: Precautions for the use of isolated safety barrier

Release time:

2022-07-27

The main function of the isolated safety barrier produced by the isolation safety barrier manufacturer is to limit the dangerous energy to enter the safe place, that is, to limit the voltage and current to enter the dangerous place. The zener z is used to limit the voltage. When the circuit voltage is close to the safe limit value, the voltage across the tube always remains below the safe limit value. So, here's a look at the use of isolated safety barriers.

The main function of the isolated safety barrier is to limit the dangerous energy into the safe place, that is, to limit the voltage and current into the dangerous place.

The zener is used to limit the voltage. When the circuit voltage is close to the safe limit value, the voltage across the tube always remains below the safe limit value.

So, here's a look at the use of isolated safety barriers.

Isolated safety barrier manufacturers share the use of isolated safety barrier precautions:

1. The isolated safety barrier should be set in a non-dangerous place.

2. The cross-sectional area of the soft copper conductor to the site (hazardous area) shall not be less than 0.5 mm2.

3. The insulation strength of the connecting wire is not less than 500V.

4. Do not connect wrong or confuse the connection between the isolated safety barrier and the circuit other than the safety terminal (marked in blue). This security code preferably chooses blue as the security mark. Conductor of the safety and non-safety conductors shall be laid in separate trunking, and their respective protective sleeves shall be adopted. The inner safety side of the isolated safety barrier, including the power supply of other inner safety circuits, should not be confused with other power supplies.

5. The safety explosion-proof system composed of isolated safety barriers and primary instruments must be inspected and approved by the national designated explosion-proof inspection agency. The Co and Lo distribution parameters provided by the National Explosion-proof Electrical Supervision and Testing Center for LU series isolated safety barriers are the allowable values of zui for Class C (hydrogen level), which can be multiplied by 3 for Class B environment and 8 for Class A environment. The transmission line uses cables of different specifications, and its own cable parameters must be highly valued and must not exceed the specified value.

6. When the isolated safety barrier is individually energized, attention must be paid to the type of the isolated safety barrier, the polarity of the power supply, the voltage level and the label of the isolated safety barrier shell terminal.

7. It is strictly forbidden to use a megger to test the insulation between the isolation barrier terminals. When checking the insulation of the system wiring, it may cause damage to the internal equipment, so please cut all the wiring of the insulated safety fence.

8. The field instrument connected to the isolation safety barrier must be the one that has been tested by the relevant explosion-proof department and obtained the explosion-proof certificate.

9. If the internal module of the isolated safety barrier is damaged and needs to be repaired or replaced, it shall be borne by the manufacturer in principle. When the customer repairs by himself, please follow the relevant precautions and the specific methods shall be carried out in accordance with the maintenance section.

The above is the isolated safety barrier manufacturers to introduce the use of isolated safety barrier precautions. If you need to know more, you can contact us at any time!

Our company has many years of experience. In the production and processing of isolated safety barriers, it meets the process requirements. If you have any questions, you can contact us at any time. There will be professional customer service to contact you and look forward to your joining at any time.

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