Explosion-proof inverter box CBQ59 Explosion-proof inverter speed box for factory use Explosion-proof inverter box

series explosion-proof frequency conversion speed control box (B
Zhejiang Xusheng Lighting Co., Ltd. mainly sells to the cities of Shanghai, Zhejiang, Jiangsu, Anhui, Inner Mongolia, Xinjiang, Chongqing, Yunnan, Shaanxi, Hebei, Henan, Hubei, Hunan, Jiangxi, Sichuan, Guangdong, Guangxi, Hong Kong, Jilin, Heilongjiang, Liaoning, Ningxia, Gansu, and Shaanxi Shandong, Fujian, Hainan and other places. Over the years, we have established long-term cooperative relationships with hundreds of customers with our good quality and reputation.
Scope of application
Only dangerous places or only dangerous places
BExplosive gas environment or combustible dust environment
Indoor and outdoor (
Temperature group~
Product features
Steel plate welding, surface spraying
Built-in AC contactor Thermal relay, circuit breaker, time relay, current transformer, voltmeter, ammeter, switch, indicator light and other components
The product has protection functions such as overload, short circuit, under-voltage and phase break
Can be specially made according to user requirements
Steel pipe or cable wiring
The motor frequency conversion speed control box can adjust the speed of ordinary three-phase asynchronous motors by changing its output frequency to meet the requirements of the production process or achieve the purpose of power saving. The power saving rate can reach ~, and it can also be used as a motor The soft start controller can also form a closed-loop speed regulation system through control circuits such as sensors and transmitters. It is easy to install and operate, has a balanced starting without inrush current (soft start, greatly reduces the power supply capacity, constant power factor, and has applause display and other functions Function.
Since the core device of the speed control inverter is a single-chip microcomputer, it has strong functions
Overcurrent protection, short circuit protection, overvoltage protection, undervoltage protection, instantaneous power outage protection and terminal phase protection.
It can digitally display or indicate or pointer to display the frequency, speed, load rate or current, etc.
The frequency can be adjusted manually. The process curve of the speed changing according to time can be set. The system can also give a signal to control its frequency.
Steel pipe or cable wiring.
Comply with B, B standard requirements.
The speed regulation frequency of this product is imported components. The cabinet is also equipped with an ammeter, voltmeter, automatic air switch indicator light, AC contactor Frequency conversion switch and start-stop button, etc. Can be designed according to different supported process requirements, select devices and prepare various appropriate operating methods.
Applicable scope group meaning
Division of hazardous areas of explosive gas environments
Different countries and regions divide explosion hazard areas according to their own standards. Our country divides explosive gas environments into districts and districts based on the frequency and duration of the occurrence of explosive gas mixtures. (Consistent with the International Electrotechnical Commission
An environment in which explosive gas mixtures appear continuously or for a long time in the zone.
An environment in which explosive gas mixtures may occur in the zone during normal operation.
An environment in which explosive gas mixtures are unlikely to occur in the zone during normal operation or even if The environment in which explosive gas mixtures only exist for a short period of time.
Zones generally only exist in internal gas spaces such as sealed containers and storage tanks. Zones rarely exist in the actual design process. Most cases belong to zones. .
Explosion-proof electrical equipment is divided into two categories
Category I electrical equipment for underground coal mines
Category II electrical equipment used in places other than mines
Category II electrical equipment, according to its applicable The maximum test safety gap or minimum ignition current ratio of explosive gas mixtures is divided into three categories: II, IIB and II and is divided into six groups according to their maximum surface temperature.
Explosive gas mixtures are grouped according to ignition temperature, see table.
Explosive gas mixtures are classified according to their maximum test safety gap or minimum ignition current ratio (R), see table.
Table
Group
Ignition temperature (℃
Table
Category
Maximum test safety gap
Minimum ignition current ratio
Ⅱ

ⅡB

Ⅱ
< br/>Properties: Under specified test conditions, the ratio of the minimum ignition current of an explosive gas vapor mixture to the minimum ignition current of an explosive methane mixture. China stipulates that gas vapor hazardous substances are divided into Class II [banned words], Class IIB and Class II according to the minimum ignition current ratio. Class II. The minimum ignition current ratio is Class II[prohibited word], and Class IIB is Class II. For example, ethane, vinyl, and acetylene are Class II[Prohibited Word], Class IIB, and Class II hazardous substances respectively.
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