The Taizhou Yuxin Marine Electrical Machinery Co., Ltd. is located in the technology and culture-rich Jiangsu East China Hardware City. It is a high-tech joint-stock limited liability company established in accordance with modern corporate systems and management mechanisms.
The main characteristics of the marine frequency conversion explosion-proof motor are:
1. Meets the requirements for explosion-proof motors with increased safety, employing a series of reliable measures to prevent sparks, arcs, and hazardous high temperatures, allowing safe operation in 2区的explosive hazardous areas.
2. Brushless excitation is adopted, with a rotating rectifier disk and a static excitation cabinet set up, ensuring a reliable excitation control system; the excitation is accurately applied with no shock during the synchronous operation; the system has reliable out-of-step protection and strong reclosing capability; the circuit design is rational, with no heat generation in the discharge resistor during operation; the excitation current has a wide adjustable range.
3. Synchronous machine, AC excitation machine, and rotating rectifier disc are coaxial. The rectifier disc is positioned between the main motor and the excitation machine, or located outside the bearing housing.
4. The housing protection rating is IP.
5. Utilizing F-grade insulation, temperature rise is evaluated according to B-grade standards.
6. Convert from traditional downwater cooling to upwater cooling, i.e., place the water cooler above the motor.
7. A moisture-proof heating element is installed in the cover at the bottom of the motor, used for moisture prevention during shutdown.
8. Select raw materials with ample margin for electrical and mechanical calculations, ensuring reliable operation and compliance with the temperature requirements of explosion-proof motors.
9. Measures are well-established; an intrinsically safe self-balancing current transformer for differential protection is installed inside the main switchgear box; platinum resistance thermometers (Pt100) are embedded in the stator windings for both operating and standby; a water leakage detector is set up for the water cooler; sliding bearings with two ends are equipped with both on-site temperature indicator and remote signal terminals.
Marine variable frequency explosion-proof motors employ a blastproof enclosure to separate the electrical components that might produce sparks, arcs, or hazardous temperatures from the surrounding explosive gas mixtures. However, this enclosure is not airtight; explosive gas mixtures can enter the motor's interior through gaps at the interfaces of the enclosure's various parts. Upon contact with ignition sources such as sparks, arcs, or dangerous high temperatures inside the enclosure, an explosion may occur. In this case, the motor's blastproof enclosure will not be damaged or deformed, and even when explosion flames or hot gases pass through the joint surface gaps, they will not ignite the surrounding explosive gas mixtures.
Marine Variable Frequency Explosion-Proof Electric Motors Temperature Groups: T1~T6 Ignition Temperature of Flammable Gases for Electrical Equipment Temperature T1 T>450℃ T2 450℃>T>300℃ T3 300℃>T>200℃ T4 200℃>T>135℃ T5 135℃>T>100℃ T6 100℃>T>85℃ Development With the advancement of technology and production, the number of locations with explosion hazards is also increasing. For instance, in the past, the production of edible oils used traditional pressing methods. After the 1970s, China began to introduce foreign solvent extraction processes, which require chemical solvents containing hexane, a highly flammable and explosive substance. Consequently, solvent extraction workshops have become potential explosion hazards, necessitating the use of explosion-proof electric motors and other explosion-proof electrical products. Similarly, the rapid development of China's highways and the emergence of batch fuel stations have also provided a new market for explosion-proof electric motors.
Explosion-proof motor, non-sparking type
An electric motor that will not ignite any surrounding explosive mixtures under normal operating conditions and generally will not experience ignition failures. Compared to explosion-proof motors, it has the same design requirements for explosion-proof motors except for the specified test voltage for insulation dielectric strength, winding temperature rise, te (the time from the start of the rated operating end temperature at ambient temperature for the AC winding, starting from the moment the starting current is applied until it reaches the maximum temperature), and the starting current ratio, which are not as strictly defined as in explosion-proof motors.
Taizhou Yuanxin Marine Electric Machinery Co., Ltd. has always adhered to the guiding principle of scientific and诚信 service, rewarding society with superior product quality and excellent service. It consistently follows a quality policy of taking responsibility for every process, every product, and every customer, wholeheartedly serving the users.
