Application of Acrel-6000/Q200 Electrical Fire Monitoring System in Chenming Hospital, Shouguang City, Shandong Province

Abstract : Ankerui residual current type electric fire monitoring system is used for electrical fire monitoring of low voltage distribution systems in shopping malls, hotels, airports, banks, hospitals, factories and other buildings through ARCM residual current type electric fire monitoring devices. This article describes the electrical fire monitoring system project of Chenming Hospital in Shouguang City, Shandong Province , and focuses on the functions and significance of the Acrel-6000 electrical fire monitoring system.

Key words: fire detector; electrical fire; Chenming Hospital, Shouguang City , Shandong Province ; Acrel-6000/Q200; GB14287

0 Foreword

Shouguang City, Shandong Province is located in No. 228 Jianxin Street, southwest of Shouguang City, a famous vegetable town in China. It is a modern, comprehensive medical insurance designated hospital, and a joint-stock private hospital. At present, there are advanced departments in internal medicine, surgery, obstetrics and gynecology, pediatrics, pain, dentistry, Chinese oncology, acupuncture and moxibustion, etc., especially in the treatment of disc herniation, bone trauma, traditional Chinese medicine treatment, cardiovascular and cerebrovascular diseases, and diabetes Anorectal, etc. have outstanding efficacy .

The system can effectively predict and monitor the leakage and leakage due to leakage , and can accurately monitor the fault and abnormal state of the electrical circuit. It can discover the fire hazards of the electrical fire and promptly remind the personnel to eliminate these hidden troubles.

1 System Requirements Analysis

Detection of leakage current, over-current, over-temperature and other signals, sound and light signal alarm, accurately report the fault line address, monitor the changes in the point of failure. Store various fault and operation test signals to show system power status.

2 Reference standards

The system complies with the People's Republic of China national standard GB14287.1-2005 "Electrical fire monitoring system Part 1: Electrical fire monitoring equipment."

3 system structure

Acrel- 6 000 electrical fire monitoring system is a company independently researched and developed for receiving residual current type electrical fire detectors and other field equipment signals to realize the alarm, monitoring, control, and management of the protected electrical lines running in the computer industry. Level hardware/software system. This system is applied to fire control centers in large shopping malls, living quarters, production bases, office buildings, shopping malls, hotels, etc., and remotely measure, remotely adjust, remotely control, and remotely locate the detectors scattered in the building to facilitate monitoring and management. The system uses a standard Modbus field bus to connect detectors with communication functions. When the detected parameters in the field protection circuit exceed the alarm setting value, it can send alarm signals, control signals, can indicate the alarm location and save the alarm. information.

There are 280 ARCM300-J1 residual current meters on site at Chenming Hospital, Shouguang City, Shandong Province , which are distributed in the 15th floor of the main building and the 4th floor of the podium respectively. The on-site fire detectors are connected to the fire control room on the 1st floor of the main building in a bus way. Acrel-6000 desktop electrical fire monitoring system. This system has the advantages of convenient installation and transportation, high cost performance, convenient maintenance, etc. The system communication state diagram is shown in Figure 1:

figure 1

According to GB14287, electrical fire monitoring systems are divided into three parts: electrical fire monitoring equipment, residual current electrical fire monitoring detectors, and temperature-based electrical fire monitoring detectors.

1) Electrical fire monitoring equipment

Electrical fire monitoring equipment is the direct window of human-computer interaction for the management personnel of electrical fire monitoring systems, and it is also the top part of the system. Mainly by the system software and necessary hardware equipment, such as monitoring host, display, UPS power supply and other components. The monitoring system software calculates, analyzes, and processes various types of data on the site, and responds to the on-site operations with graphics, digital displays, sounds, and indicators, as shown in Figure 2:

figure 2

2) Residual current type electric fire monitoring detector and temperature measurement type electric fire monitoring detector

The ARCM300-J1 residual current type electrical fire monitoring device is installed in the floor distribution box and is used to detect the electrical parameters generated by electrical fire hazards such as residual current and temperature in TN-CS, TN-S and local TT systems. When the parameters of the monitoring device in the protection circuit exceed the alarm setting value, an alarm and control signal can occur so as to eliminate the hidden danger of electrical fire caused by the residual current and temperature increase. As shown in Figure 3 below:

image 3

3) Schematic diagram of residual current and temperature sensor threading
The rated current level of the residual current transformer shall be greater than or equal to the setting current of the protection circuit of the distribution circuit. In practice, it shall ensure that all cables or copper bars pass through the transformer. The temperature sensor is a thermistor NTC. Provides -10 °C -120 °C temperature monitoring reference, can be used to monitor the temperature of the cable or distribution box, providing temperature protection, as shown in Figure 4:

Figure 4

4 system function

Acrel- 6 000 electrical fire system can collect real-time and regularly- received residual current data and temperature of the field equipment, and alarm sound and light alarm functions, etc. The alarm temperature value and leakage current value can be set according to actual needs. When it is remotely reset. The system can record alarm events, dates, alarm values, and over-line values ​​and generate reports that can print alarm event records.

1) fault information prompt

When the monitoring device detects a device failure, the monitoring device will issue the following information. The software interface is shown in Figure 5:

l The failure unit on the main screen of running monitoring displays a yellow background;

l Operation monitoring The main interface displays real-time fault information. The information content includes: time, device location, device number, and fault information (the display interface is as shown in the figure below);

l In the real-time information display area, Fault Information is yellow.

l The yellow fault indicator of the monitoring device is on and a fault tone sounds.

Figure 5

2) Alarm record query

By clicking "Alarm Log Query" under the [Data] menu, enter the alarm record (action information query) screen as shown in the figure below. The user can query the corresponding alarm or the record under the action type within any time period in the interface. The operation mode is to select the start date, end date, query type and click the query button. The software interface is shown in Figure 6.

Figure 6

3) Detector Management

This management function can only be operated by “system management level”. After logging into the system with “system management level” authority, you can enter the probe management interface as shown in the figure below by clicking “detector management” under the menu of “maintenance”. The interface can modify the corresponding communication port, communication speed and usage status of each channel. The software interface is shown in Figure 7.

Figure 7

5 Concluding remarks

With the development of smart buildings and the widespread use of electricity, people have become more aware of security awareness. The installation of leakage current fire system in public buildings is an inevitable trend of intelligent construction. The electrical fire system is conducive to discovering hidden dangers and dealing with hidden dangers in time. It is of great significance to prevent fires from happening. Since the system was put into operation, more than 100 hidden dangers have been discovered and rectified, which provided a scientific basis for the hospital's fire management and was well received by customers.