Normal working conditions
+400 C, ambient air temperature does not exceed the upper limit, lower limit of not more than-50C, 24h average of more than 350C
The installation site altitude of more than 2000m0
The relative temperature of the atmosphere does not exceed 50% in the ambient air temperature is +40 ° C, lower temperatures, high humidity. The wettest month average minimum temperature of 11 25 ° C, the average maximum relative humidity of 90%, taking into account the condensation due to humidity changes occur in the surface of the product should be used in special measures.
Pollution degree III level.
Run the place of strong vibration and shock, corrosion of metals and destruction of insulation harmful gases, no serious dust, conductive particles and explosive substances, no strong magnetic interference.
Product Overview
F dagger M3 Series rural network dedicated distribution network intelligent circuit breaker (automatic reclosing type) according to the leakage protector devices and low-voltage circuit breakers in low voltage rural power electricity system, fully integrated national Technical Indicators and operation and management to development and production, with high breaking capacity, low temperature, long life, high electrical insulation advantage. Widely used when the lines appear leakage, over current, short circuit, over voltage phase off zero and other faults, can be quickly cut off the supply line, after the failure to eliminate the automatic reclosing connected to the supply line, without manual closing, can greatly enhance the economy and security of the entire low-voltage distribution network and meet the intelligence requirements of the national grid, the communication interface and terminal control device interface connections, leakage, over current, over voltage, overload and other data upload real-time implementation of accurate repair of power system fault, and in accordance with the requirements of the monitoring center, to ensure the operation safety of low voltage distribution network reliability and continuity, to ensure that on the whole grid-powered intelligent.
Features
The product is integrated in one, with automatic downshift, overload, short circuit, phase loss, over-under voltage, leakage, lightning, real-time communication and other functions, complete with intelligent digital control, the action value reliable, accurate and correct. Both to protect the safe use of electricity can do a reliable power supply.
High-performance single-chip process control, LCD Chinese display, real-time monitoring of network information. Real-time display of each phase of the load current, the maximum phase of the leakage current, voltage and other operating data. By failure to stem node output fault information, can monitor real-time upload.
High breaking design (ultimate short circuit breaking capacity Icu; 50} 80kA), high breaking capacity, small size, beautiful appearance, short arcing.
Anti-interference ability, the use of advanced anti-lightning residual voltage circuit, equipped with high-intensity transient suppressors (the VS), effective against lightning induction, the elimination of a variety of harmonic interference, stable and reliable.
Automatic reclosing procedure
Overload protection
Overload current can be set, breaking time can be set.
Over-load closing three procedures (by the user needs to be set)
The first time: the overload trip, an interval of 10 minutes automatic switch on.
The second: After closing detect the overload current to drop to the safety of current continues to run. If there are still 1.3 times the current trip, the trip after an interval of 20 minutes and then automatically closing.
The third: After closing still more than 1.3 times the current trip to lockout.
Short-circuit protection
Short-circuit current in multiples of the time can be set.
For the first time: the short-circuit current is 10 times the rated current, tripping time is less than 180 milliseconds (200 milliseconds) National Institute of Standards and automatic switch on after 15 minutes after the trip.
Rapid detection of load line, the second: after closing if normal continue to run, short-circuit fault exists, ie, 2 times the current 120 ms trip atresia. Leakage protection
Leakage trip after 20s} 60s automatically reclose when the microprocessor is detected leakage faults still exist, after the quick trip atresia.
Make available in the mechanical short-circuit backup protection function, and failure to prevent electrical shorts.
Over voltage protection, circuit breaker automatic closing operation when the power supply voltage is restored to 10% of the normal voltage of the error.
Communication interfaces to meet the needs of the smart grid, from time to time to send the end of the distribution lines of the technical data, and in accordance with the instructions of the control center jump, closing, and make sure the distribution security, intelligence, reliability
National patent products, has been the Ministry of Information Industry inventions, utility models, designs a number of patents.
Quickly and accurately identify the type of fault, a permanent fault isolation, exclusion of transient fault protection network is working properly.
Improve the over-current, over voltage, leakage, short circuit protection to ensure that the electrical environment, equipment and personal safety. The independent body electric shock protection processing unit, set the leakage and electric shock, respectively, independent analysis of the control channel. Line leakage leakage vector is generated by one or more phases, the processing unit can be an electric shock in any one phase of the received <50mA current jump <0,15 s l The ’@ protection. For a short time or a sudden increase in leakage current, leakage values did not exceed the set the action value, still reliable power supply. This feature greatly improves the safety and reliability of the electricity.
Lightning protection feature multiple levels of protection equipment to reduce damage to the chances of extending the time span of the user equipment.
Failure points off time is adjustable, adjustable leakage current action value (fault action values), can be used for the protection of Taiwan Chief or sub-protection grade trip and at the same time tripping phenomenon does not occur, the work load current transformer size according to the Taiwan District set, will not be overloaded and burned the transformer.
Intelligent control technology, network management and remote monitoring, and also launch fault trip to the duty officer on the phone, the timely processing of the scene incidents to restore power as quickly as possible according to user requirements.
The main technical parameters table
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