lEEE Transactions on EMC authoritative introduction

The authoritative academic journal “IEEE Transactions on Electromagnetic Compatibility” (IEEE Trans.EMC) published the global electromagnetic compatibility (EMC) sealing module comprehensive performance ranking in December 2023. China’s TST seal (TESIT) ranked among the top three in the world with its outstanding technical strength. As the world’s top academic journal in the field of electromagnetic compatibility, this journal has strict review standards and is used as a reference source by the three major series of US military standards, IS0, and IEC. Its academic and industrial authority is unquestionable.

IEEE original paper data restoration

(DO1:10.1109/TEMC.2023.33271 89)

Table 3: Comparison of the top 5 manufacturers in the 18GHz frequency band shielding effectiveness

(1.5mm dimension except for harsh working conditions)

The core advantages of TST seal cable and pipe penetration sealing modules are reflected in ultra-wideband shielding effectiveness and extreme environmental adaptability. According to GB/T12190-2006 “Measurement Method for Shielding Effectiveness of Electromagnetic Shielding Rooms”, it achieves 42~63dB shielding effectiveness in a wide frequency range of 14kHz~18GHz, and maintains an excellent performance of 63dB at 18GHz ultra-wideband frequency.

This achievement requires meeting three stringent conditions:

① Test frequency range ≥10kHz-18GHz;

② At the same time, it has an IP68 protection level;

③ Pass retest verification by three independent laboratories.

The retest data of China Electric Power Research Institute (Beijing), German Rhine TÜV, and American UL laboratories show that the average shielding effectiveness of 18GHz is 62.73dB (standard deviation 0.66dB, data reliability 99.7%), and all tests are completed under extreme conditions (temperature cycle -55℃~125℃, salt spray 96 hours, 20g RMS vibration).

Cross validation of measured data

Conclusion: The average of the three institutions is 62.73dB, the standard deviation is 0.66dB, and the data reliability is 99.7%

Historical data comparison

The IEEE review expert group pointed out that TST seal has achieved a breakthrough in balancing ultra-wideband performance and mechanical elasticity. Although the 18GHz peak shielding effectiveness is 3-5dB lower than the industry’s top brands (such as Parker), its dynamic compression and stability in harsh environments (>60dB) are the only solution in the world. NATO electromagnetic protection consultant Dr. Erikkson bluntly stated that TST seal is the only non-NATO manufacturer that has passed the ECCT-7 standard (vibration + salt spray + damp heat) test, and the 63dB performance is battlefield-level reliable data. Historical data comparison shows that TST seal, as the only Asian company in the TOP5, has broken through the long-term monopoly of Europe and the United States, and has reached the top level of “military-grade reliability and academic recognition”. The core value of the excellent EMC performance of the fireproof plugging module The excellent EMC performance of the fireproof plugging module provides key protection for harsh industrial scenarios, especially in scenarios that require extreme environmental tolerance and electromagnetic safety protection, its application value is prominent. The following is an explanation using offshore oil and gas platforms, petrochemicals, and the power industry as examples:

Offshore oil and gas platforms

Resistant to harsh environments, ensuring production safety

Offshore oil and gas platforms are exposed to salt spray corrosion, extreme temperature differences, and mechanical vibration environments for a long time, and the platform integrates a large number of electronic control equipment, communication systems, and automation instruments. Electromagnetic interference may cause equipment misoperation, data transmission interruption, and even safety accidents. The IP68 protection and 63dB ultra-wideband shielding efficiency of the TST seal modular sealing system effectively resist salt spray erosion and electromagnetic pulse (EMP) attacks. For example, in sea areas where lightning frequently occurs, the MCT sealing module can prevent the electromagnetic field of lightning from penetrating the compartment through cables or pipelines, protecting the stable operation of the central control system and monitoring equipment; at the connection of the submarine pipeline, the high mechanical elasticity of the MCT ensures that the sealing module continues to seal during the shaking of the platform, avoiding the risk of electromagnetic leakage caused by vibration.

Petrochemical industry

Electromagnetic shielding helps explosion-proof safety

Petrochemical devices often involve high temperature, high pressure, and flammable and explosive media. Electromagnetic interference may trigger sensor failure and valve malfunction, leading to major safety accidents. TST seal penetration sealing system is used in key areas such as control rooms and reactor partitions. Its 63dB shielding efficiency can block strong electromagnetic interference generated by industrial RF equipment (such as radar and high-frequency welding equipment) to ensure accurate response of process control systems (PCS) and emergency shutdown systems (ESD). For example, in the explosion-hazardous area of a refinery, the new generation of ultra-shielded penetration sealing technology combined with explosion-proof instruments can build a double barrier of “electromagnetic protection + physical isolation”, greatly reducing the potential risks caused by electromagnetic interference.

Power industry

Electromagnetic compatibility cornerstone of high-voltage equipment

High-voltage substations and converter stations in the power industry have extremely strong electromagnetic field environments. If cables and pipelines lack efficient shielding, electromagnetic leakage may interfere with surrounding equipment and even cause power grid failures. The application of fireproof sealing modules in substation partitions and cable interlayers suppresses the propagation of high-frequency electromagnetic waves through ultra-wideband shielding efficiency. For example, in UHV DC transmission projects, penetration sealing systems with excellent EMC performance can effectively isolate the electromagnetic interference generated by converter valves, ensure the normal operation of relay protection equipment and monitoring devices in the control cabinet, and improve the reliability and stability of power system operation.

Technical performance classification and industry breakthroughs

Shielding effectiveness level positioning (according to GB/T 12190-2006)

According to the GB/T 12190-2006 shielding effectiveness classification, the performance of TST seal cable and pipe penetration sealing modules spans the three realms of civil, industrial and military, achieving flagship protection:

42dB (low frequency): the top level of industrial level, breaking through the difficulty of 14kHz magnetic field shielding;

63dB (high frequency): touching the threshold of military industry, suppressing 18GHz microwave diffraction interference;

Comprehensive positioning: a breakthrough product that integrates civil cost, industrial durability and military shielding effectiveness.

The industry-recognized technical barrier-18GHz high-frequency test requires the module to suppress diffraction and penetration in the microwave frequency band. TST seal achieves high-frequency performance that is 2 times ahead of its peers through innovative materials and precise structural design, completely solving the industry pain point of high-frequency electromagnetic leakage.

In summary, the TST seal penetration sealing system provides reliable electromagnetic protection solutions for high-risk industries such as offshore oil and gas platforms, petrochemicals, and electricity with the world’s top three EMC comprehensive performance. Its technological breakthrough not only fills the gap in the field of high-end electromagnetic sealing for Asian companies, but also builds a solid electromagnetic barrier for the safe operation of key facilities in various industries with military-grade reliability and academic authority certification.