What are the requirements for the type of explosion protection and the place of use of electrical equipment?
1: Flameproof electrical equipment has a flameproof enclosure that withstands the pressure generated by the detonation of its internal gas mixture and prevents the ignition of the surrounding mixture around the enclosure after passing through the flameproof gap. This is an explosion-proof type that is currently used more than Zui, but the volume and quality are large.
2: The safety-enhanced electrical equipment is structurally constructed to improve its safety so that it does not generate arcs and sparks under normal operating conditions, nor does it exhibit high temperatures in the flammable mixture. Increased safety electrical equipment is still not widely used in China. It is mainly used in electric motors, transformers, lighting fixtures, etc. It is more economical than other explosion-proof types.
3: Intrinsically safe electrical equipment is an electrical device that achieves explosion-proof electrical energy by limiting the electrical parameters of the circuit and thereby limiting the energy of the spark spark, so that the spark and thermal effects generated by the circuit system are insufficient to ignite the mixture. This type of explosion protection is mainly used on weak current products, such as general control, signals, communication devices and instrumentation. The utility model has the advantages of simple structure, small volume, light weight, convenient manufacture and maintenance, and reliable safety, and is an ideal explosion-proof type.
4: According to the location of explosion-proof electrical equipment, it can be divided into two categories: coal mine (class I) and factory (class II). The former is mainly for biogas (methane) explosion-proof, and the latter is divided into three grades A, B, and C according to the nature of various gas mixtures. Therefore, the electrical equipment used for the explosion-proof conveyor should be reasonably selected according to the type of the place of use, and cannot be arbitrarily changed.
Load Moment Indicator
A load moment indicator is an instrument used in determining whether a certain load could be carried by the Tower Crane
or not. When the operator runs the tower crane, load moment
indicator could show the comprehensive working condition of the tower
crane, which help him run the tower crane safe and effective.
Models of load moment indicator: RC-A5-I load moment indicator, RC-A5-I Tower Crane Load Moment Indicator, Load Moment Indicator CXT30.
When more than one set of tower crane work at the same time, Tower Crane Anti-collision Safety System will be required. A multi-function Safety System for Tower Crane integrated load moment indicator with anti-collision & zone protection system and remote online monitoring system. It indicates real time working states of tower crane and tower crane group both in operator cabin and online. In the meantime it combines functions including black box, anti-collision & zone protection.The system is applicable to various types of level-jib and luffing tower cranes. It adopted the most advanced ARM embedded intelligent microprocessor technology, high precision digital azimuth sensor, weighing sensor, angle sensor.which greatly enhanced data processing capability with higher precision and higher stability.
Tower Crane Load Indicator,Zone Protection System,Tower Crane Anti-Collision Safety System,Anti-Collision System,Crane Monitor System
SHEN YANG BAOQUAN BUSINESS CO., LTD , https://www.sytoplesstowercrane.com
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