China LX918 Marine Limit Switch - Reliable Suppliers & Factory for AC/DC Applications
Advantage
All products of the company can be customized for production according to user usage scenarios.
Structure and working principle
The shell of the limit switch is made of cast iron, which has good mechanical strength and good corrosion resistance. The performance of the material will not deteriorate under the environmental conditions of marine ships. The shell type is protective, and the protection level can reach IP67. Due to the action of the spring, it can automatically reset. Operating position: 5°→0°-45° The opening and closing of the limit switch contacts are determined by the cam position.
The agreed heating current of the limit switch is 16A; the rated insulation voltage is 500V; the rated working voltage (Uc) and the rated working current (le) correspond to the figure on the right:
The rated working voltage of the DC controlled 5.5Kw three-phase squirrel cage asynchronous motor is below 440V and the rated working current is 12A.
Working conditions
- Altitude: The altitude of the installation location does not exceed 2,000 meters;
- Medium temperature: The ambient air medium temperature is not higher than +75℃ and not lower than -25℃;
- Relative humidity: The average relative air humidity in the wettest month of the installation location is not greater than 90% (the average minimum temperature in the month is not greater than +25°C);
- Pollution level of environmental conditions: The pollution level of environmental conditions is Level III;
- Installation category: The installation category is Category I;
- Types of limit switches: Structural types are divided according to structural types: The structure of this product is rotary type, and the speed ratios are: 80:1, 40:1, and 20:1. Control loops are divided according to control loops: this limit switch can be equipped with up to 8 control loops.
| Environmental Conditions | Rated data | Project | Ue V | le AV |
|---|---|---|---|---|
| Environmental control temperature | -25℃-+45℃ | AC | 500 | 2.00 |
| Moist air at sea | Yes | 380 | 2.60 | |
| Oil, mold | Yes | 220 | 4.60 | |
| Tilt | Any tilt | DC | 440 | 0.14 |
| Swing | ≤45℃ | 220 | 0.27 | |
| Vibration, shock, shock Britain | Yes | 110 | 0.55 |
Overall and installation dimensions
A contact group (2) is installed in the travel switch housing, and the moving contact and the stationary contact thereof drive the cam on the switch shaft (4) to open and close the contacts as the operating arm (3) rotates. The positioning of the operating arm is achieved by means of a positioning member (5), a positioning spring (6), a positioning lever (7) and a roller (8).
Use and maintenance
Frequently Asked Questions (FAQ)
Can the limit switches be customized?
Yes, all products of the company can be customized for production according to specific user usage scenarios.
What materials are used for the limit switch shell, and what is its protection level?
The shell is made of cast iron, providing high mechanical strength and excellent corrosion resistance suitable for marine environments. The protection level reaches IP67.
What are the electrical ratings for this limit switch?
The agreed heating current of the limit switch is 16A, and the rated insulation voltage is 500V. For DC controlled motors, the rated working voltage is below 440V with a rated working current of 12A.
What are the environmental limits for installation?
The installation altitude must not exceed 2,000 meters. The ambient air temperature should be between -25℃ and +75℃, and the average relative humidity in the wettest month must not exceed 90%.
What structural speed ratios and control loop configurations are available?
This product is a rotary type limit switch. The available speed ratios are 80:1, 40:1, and 20:1. It can be configured with up to 8 control loops.