The leakage fire alarm system in use, the following should be paid attention to

(a) connection, should according to leakage alarm indicating the power into the terminal and the outlet end, correct connection, not the reverse.

(2) the molded case circuit breaker, the installation should, according to the requirement in arc jet direction have enough flashover distance.

(3) when installation, must strictly distinguish between N line and PE line, four line 3 p or 4 p four-wire type N line should be by leakage fire monitoring and control system of current mutual inductance detector. By leakage fire alarm system of current mutual inductance probe of N line, shall not be used as PE line, no duplicate grounding equipment and the leakage can be close to the conductor. PE line shall not be connected to the residual current protection device.

(4) the leakage fire alarm system in power distribution system in construction of construction unit, the two sides should communicate, coordinate related installation method, size and electrical parameters. New project using electricity leakage fire alarm system, the power distribution cabinet (box) when you place an order to the factory for product appearance size, hole size, so that the installation location.

(5) "code for fire protection design of tall buildings" GB50045-2005 article 9.1.1 requirements, shall be in accordance with the provisions of the fire electricity leakage fire alarm system is carried out. Therefore, regardless of the fire control center set of PC control system, should be according to the provisions of the fire electricity, access to the fire power.

(6) the current leakage fire alarm system the mutual inductance detector installed inside the distribution cabinet (box), it is important to pay special attention to the construction safety, under the condition of power construction, and pay attention to the strong and weak electricity separate line, pay special attention to prevent wrong line or pulling, cause series with heavy current leakage fire alarm system bus system in the four core, burned the whole leakage fire alarm system.

(7) project general leakage alarm/residual current detector should be placed in the bottom line of molded case circuit breaker, when installing the inconvenience, can consider to install in the molded case circuit breaker into the terminal.

(8) the construction unit shall be equipped with portable (handheld portable) residual current detector, and debugging to the power distribution system of the residual current detection, abnormal situation in a timely manner to eliminate the residual current, and a detailed record. According to the standard GB13955 5.7.3 and 5.7.5 requirements, set the appropriate leakage alarm threshold, and alarm set point values not usually less than the line and equipment twice the normal operation of the leakage current value.

Four core (9) bus system in parallel manner, connect all leakage alarm, bus to control center, the bus transmitter convert RS232 serial port, connected to the receiving host, the host should be installed leakage monitoring software, has two-way communication function to realize the remote adjustment, remote sensing, remote control, remote."

(10), according to the requirements 6.3.7 GB13955 standard installation after the completion of the inspection items must have the following: press the "self-check" test for leakage alarm button, test whether tripping action. The tests shall be carried out one by one, with the test button test three times in a row, should correct action, fire services center PC control system should show the current status, addresses, and automatically record; With points or 5 times the rated load current, reliable action, should not have false alarm; Manual for each test the remote power distribution box, and should be correct.

(11) in the center of the fire control, operation control system, the PC machine should be able to control over any fault monitoring operation, when the "test" button, the PC control system should be able to automatically receive shows fault status, address code, at the same time, record the current state and can query.

(12) leakage alarm system using management system: a month in the condition of electricity, can temporarily allowed under the condition of power, press the test button to check whether leakage alarm action is reliable. Lightning or fire power makes the leakage alarm, the inspection should be done. After leakage alarm action, the cause of the accident, be found to allow a hours.then, if again action, should find out the reason to find fault, shall not be forcibly sending in a row, jumper, sub use leakage alarm shall be strictly prohibited.

Beijing branch into the dragon control system co., LTD is specialized in high-tech product development, production and sales and service of high-tech enterprises, is China's security product industry association, deputy director of the unit, vice President of China association of fire units, China fire protection association director unit, passed the ISO9001 quality management system certification unit, a number of national and local relevant technical specifications and product standard of the ginseng units.

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