Taizhou Yuanxin Marine Electric Motor Manufacturing Co., Ltd., with the strong support of numerous customers over the years and the relentless efforts of all employees, has achieved product diversification. Our main products include: YH series motors (with ship inspection), JZ2-H series marine hoist motors, YB2-H explosion-proof marine motors, marine variable frequency motors, two-speed motors, high-efficiency permanent magnet variable speed marine motors, and marine braking motors.

Marine Variable Frequency Explosion-Proof Electric Motors Classification

1. By motor principle classification

Available in explosion-proof asynchronous motors, explosion-proof synchronous motors, and explosion-proof DC motors, etc.

2. By usage location

Available in explosion-proof electric motors for underground coal mines and for factory use.

3. Divided by explosion-proof principles

Available in explosion-proof motors, increased safety motors, positive pressure motors, non-sparking motors, and dust explosion-proof motors, etc.

4. By matching host units

Explosion-proof motors for coal mine conveyors, winches, rock loaders, local exhaust fans for coal mines, valve, loud explosion-proof motors for fans, marine explosion-proof motors, lifting and metallurgical explosion-proof motors, and brushless excitation synchronous motors for hydrogenation unit accessories. Additionally, they can be categorized by technical specifications such as rated voltage and efficiency, including high-voltage explosion-proof motors, high-efficiency explosion-proof motors, high-slip ratio explosion-proof motors, and high-starting torque explosion-proof motors.

The main characteristics of the marine frequency conversion explosion-proof motor are:

1. Meets the requirements of explosion-proof motors with increased safety, implements a series of reliable measures to prevent sparks, arcs, and hazardous high temperatures, allowing safe operation in explosion hazard areas of Zone 2.

2. Brushless excitation is adopted, with a rotating rectifier disc and a static excitation cabinet set up, ensuring a reliable excitation control system. The excitation with correct polarity and slip is accurate with no shock. The out-of-step protection of the excitation system is reliable and has strong reclosing capability. The line design is reasonable, and the discharge resistor does not generate heat during operation. The adjustable range of excitation current is wide.

3. Synchronous machines, AC excitation machines, and coaxial rotating rectifiers. The rectifier disk is located between the main motor and the excitation machine, or placed outside the bearing housing.

4. Shell protection rating: IP

5. Utilizing Class F insulation, temperature rise is evaluated according to Class B criteria.

6. Transition from traditional下水冷 to 上水冷, i.e., placing the water cooler above the motor.

7. A moisture-proof heating element is installed inside the cover fixed at the bottom of the motor, used for moisture prevention during shutdown.

8. Select raw materials with ample margin for electrical and mechanical calculations, meeting the reliability of operation and temperature requirements for explosion-proof motors.

9. Comprehensive measures are in place; an explosion-proof self-balancing current transformer for differential protection is installed in the main junction box; platinum resistance thermometers, with a scale of Pt100, are embedded in the stator windings for both working and standby; a water leakage detector is set up for the water cooler; sliding bearings with two-end mounts are equipped with on-site temperature display instruments and remote signal terminals.

Marine Variable Frequency Explosion-Proof Electric Motor Equipment Category

Explosive gas atmosphere electrical equipment is categorized into:

Category I: Electrical Equipment for Use in Coal Mine Underground

II Class: Electrical equipment for explosive gas environments excluding coal mine.

II Division "d" flameproof and intrinsic safety "i" electrical equipment are further classified into IIA, IIB, and IIC categories.

Electrical equipment for combustible dust environments is categorized into: Type A Dust-Tight Equipment; Type B Dust-Tight Equipment.

Marine Frequency-Conversion Explosion-Proof Electric Motors Temperature Groups: T1~T6 Ignition Temperature of Combustible 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 increasing. For instance, the production of edible oils used to be via traditional pressing methods. After the 1970s, China began to introduce foreign solvent extraction techniques, which require the use of hexane-containing chemical solvents—hexane being a 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 large-scale fuel stations have created a new market for explosion-proof electric motors.

Taizhou Yuanxin Marine Electrical Equipment Co., Ltd. has passed the ISO9001:2000 international quality system certification, and the total production and sales volume of motors has been increasing year by year. For many years, the company has adhered to its corporate philosophy of "pursuit" and business concept of "co-developing with customers." With its sincere attitude, good reputation, high-quality products, and comprehensive services, the company has earned high praise from numerous clients!