The key role of the isolated barrier in the explosion-proof system

TD-G5043 isolator, also known as isolation safety barrier. The measures of pressure limit, current limit and isolation can not only prevent the dangerous energy from entering the dangerous site from the primary safety terminal, improve the explosion-proof performance of the system, but also increase the anti-interference ability of the system, and greatly improve the reliability of the system operation. Widely used in petroleum, chemical industry and other flammable and explosive places.

The main function of TD-G5043 isolated safety gate is to provide isolated power to the transmitter in the danger area; transmit the 4 / 20 mA current signal generated by the transmitter from the danger side to the safety side to drive the load in the safe area; it is suitable for places with different danger levels such as zone 0,1 and 2, and can effectively guarantee the safety of Class A, B and C equipment. Improve the electrical safety insulation performance between the connected equipment.

Functions and Featurespath

01 Number of ports

Single in and double out, completely floating, the 4 / 20 mA current signal generated by the transmitter is input from the dangerous side isolation road, and can be output to the safety side in two ways. The signal does not interfere with each other to drive the load in the safety area.

02 Suitable transmitter in a wide place

It is suitable for places with different danger levels such as zone 0, zone 1 and zone 2, and can effectively guarantee the safety of class A, B and C equipment.

03 Safe zone output

Signal range: 4-20 mA or (1-5V);

Load resistance: 550 Ω (current output), 10 KΩ (voltage output)

04 Risk zone input

Signal range: 4-20 mA;

Power distribution voltage:> 15.5V at 20 mA and 26V for open circuit

05 High conversion accuracy and small temperature drift

Conversion accuracy: 0.1%, temperature drift <0.1 μ A / ℃ (-20~60℃)

06 Small power consumption

Power supply: 20-35 Vdc, power consumption: 24V, 65 mA, maximum voltage Um: 250V

07 Explosion proof sign

[Ex ia Ga]ⅡC

Safty Certifications and Application Standards
Composition diagram of TD-G5043 isolated barrier application system

TD-G5043 isolated safety grid has passed the national explosion-proof safety certification, meets GB3836.1-2010 and GB3836.4-2010 standards, and is suitable for all kinds of dangerous environments.

The construction of the intrinsically safe loop system shall ensure that the matching of the isolation safety grid and the local safety instrument, and the GB3836.13-1997 " electrical equipment for explosive gas environment shall be strictly observed.

Part 13: Maintenance of electrical equipment for explosive gas environment ", GB3836.15-2000" Electrical equipment for explosive gas environment.

Part 15: Electrical installation in dangerous places (except coal mines) ", GB3836.16-2006" Electrical equipment for explosive gas environment.

Part 16: Inspection and Maintenance of Electrical installations (except coal mines) "and GB50257-1996" Code for Construction and Acceptance of explosive and fire Environmental Electrical installations ".

Service environment

security isolation

The isolation voltage between the safety side and the danger side is 250V, Ac

insulation strength

2500V, Ac, 1min (primary end and non-primary end)
Working requirements

The safety grid shall be installed in a safe environment without explosive gas in the safe area, without vibration and impact, without electromagnetic induction influence such as large current and spark, and without strong corrosion in the surrounding environment.

TD-G5043 isolation grille plays a key role in the explosion-proof system. With its efficient voltage and current limiting function and strict safety certification, it provides reliable protection for the electrical equipment in dangerous places. The equipment provides a solid technical guarantee for the production safety of petroleum, chemical industry and other industries.