Basic Info.
Product Description
I. Overview:This type of pre-paid combined transformer is composed of integrally poured dry high-voltage metering box and ZW32F intelligent demarcation switch. It is suitable for electric energy metering in outdoor power system with rated frequency of 50HZ and rated voltage of 10KV and below. It can provide users with 0.2S-level products with various changes and double changes. The transformer is vacuum poured with fully enclosed epoxy resin, so ageing problem is eliminated. The dividing switch adopts vacuum switch with zero sequence and protective current transformer, and realizes zero sequence, over current and quick break protection with intelligent controller. It can automatically remove single-phase grounding fault and isolate inter-phase short circuit fault. Ensure the safety of power consumption for non-fault users. This product has FTU function to realize remote switch-on and switch-off, and GPRS remote control function (see "Intelligent Controller Description" below for details). This type of pre-paid combined transformer realizes the basic functions of pre-paid high-voltage metering box such as pre-payment of electricity charges, warning before arrears, switching off after arrears and alarming after delays through the pre-paid control terminal. This product is easy to install in structure and beautiful in appearance.
2. Characteristics:When a fault occurs in the user's interior of T-connection of 10 kV overhead distribution line, if the fault occurs in its entry section, or if the fault occurs in the inside of the user's entry switch, but the protection action time limit of the fault does not match the protection of the substation's outlet switch properly, the protection of the substation's outlet switch will turn off. If the nature of the fault is permanent and the substation overlap is unsuccessful, an accident within a medium-voltage user will cause power failure of the entire distribution line. This kind of common spread accident in the distribution network will have a bad impact on the society. This type of outdoor user demarcated vacuum circuit breaker is the ideal equipment to solve the aforementioned sweeping accident. The zero sequence current transformer is built in the outgoing side of the equipment, which is used in conjunction with the demarcation controller. Installed at T junction or user end of 10 kV overhead distribution line, the single-phase grounding fault can be automatically removed and the inter-phase short circuit fault can be automatically isolated. Ensure the safety of power consumption for non-fault users. Suitable for substation, industrial and mining enterprises, rural power grid distribution system for protection and control and frequent operation places.
3. Characteristics:Dry integral pouring combined transformer is a monitoring and metering product developed by our factory according to the safe and stable operation of power supply. Its structural characteristics are as follows: vacuum integral pouring of Swiss outdoor epoxy resin with arc resistance, ultraviolet resistance and aging resistance, with umbrella skirt in shape and large creepage distance on the surface. Strong hydrophobicity and seismic resistance. The pillar and the current transformer are integrated, thus reducing the volume and weight. It ensures the reliability and clarity of high voltage lead. The anti-theft power is improved, replacing the traditional box-type ceramic bottle structure, reducing the internal high-voltage components, and enhancing the insulation performance of the transformer.
4. Citation criteria:GB/T 1022-1999 Common Technical Requirements for Standards of High Voltage Switchgear and Control Equipment
GB311.2-2002 "Guidelines for Insulation Coordination of High Voltage Transmission and Substation Equipment"
GB/T 4109-2008 "Insulation Casing with AC Voltage Above 1000V"
GB2706 "Test Method for Dynamic and Thermal Stability of AC High Voltage Electrical Apparatus"
GB3309-1989 Mechanical Test of High Voltage Switchgear at Room Temperature
GB1208-2006 Current Transformer
GB/T17626-4-1998 EMC Test and Measurement Technology, Electrical Fast Transient Pulse Group Immunity Test
5. Use of environmental conditions:A. Elevation not exceeding 3000 meters; Pollution grade: Grade IV.
B. ambient air temperature: - 40 C ~ + 40 C; diurnal temperature difference: diurnal variation 25 C.
C. Wind speed is not more than 35 m/s and earthquake intensity is not more than 8.
D. Places free from flammability, explosion and chemical corrosion.
6. Superior structure:ZW32F-12 User Boundary Vacuum Circuit Breaker adopts three-phase pillar structure, which has the characteristics of stable and reliable interruption performance, no combustion and explosion danger, safety, maintenance-free, small size, light weight and long service life. It is a maintenance-free product. Installation of circuit breaker body adopts pedestal installation mode. The demarcation controller is installed under the circuit breaker and is connected with the demarcation circuit breaker through an outdoor cable. The power transformer (voltage PT) can be placed side by side with the circuit breaker or above the circuit breaker.
7. Flexible and convenient operation:Electric automatic energy storage, remote switch-off. At the same time, it has the function of manual energy storage and manual separation. It can be connected directly from overhead line to output rated voltage of voltage transformer. It can be transferred through terminal box on the side of circuit breaker. It is introduced to the controller by connecting cable and operated by remote control of the controller.
The operating mechanism adopts miniaturized spring operating mechanism, which has low energy consumption for opening and closing, and the mechanism transmission adopts direct transmission mode with fewer opening and closing components and high reliability. The operation mechanism is placed in the sealed circuit breaker mechanism box, which solves the problem of mechanism Corrosion and improves the reliability of the mechanism.
8. Functional introduction:Variable ratio can be adjusted arbitrarily, PT secondary output transfer, zero sequence current mutual inductance and two or three phase current transformer are installed outside the switch outlet line, and terminal boxes are set on the outer side of the mechanism cover. The terminal boxes of CT variable ratio lead-out and voltage PT secondary input are all in the terminal box, which can adjust arbitrarily the CT conversion ratio and PT secondary power line through the circuit breaker. In transit, the controller is introduced through outdoor cables, which reduces the inconvenience of the long secondary power line and the additional power interface of the controller.
9. After-sales service:In the spirit of high quality, high efficiency and development, our company takes high quality products and intimate service as its concept, and openly and responsibly makes the following solemn commitments to you:
1. The minimum warranty period for all products sold by our factory is one year, and for some products it is three years. Free door-to-door maintenance during the warranty period (except for faults or damages caused by human factors or irresistible natural phenomena).
2. After receiving the notice of repair, we rushed to the scene within seven working days and solved the problem.
3. Users can consult relevant technical problems through after-sales telephone and get clear solutions.
4. In case of performance failure in normal use, the company undertakes the above warranty service. In addition, if the applicable laws and regulations of the state have other explicit provisions, the company will comply with the relevant laws and regulations.
5. During the warranty period, paid maintenance services will be provided in the following circumstances.
(1) Damage caused by man-made or irresistible natural phenomena.
(2) Failure or damage caused by improper operation.
(3) Faults or damages arising from the transformation, decomposition and assembly of products. After-sales service:
In the spirit of high quality, high efficiency and development, our company takes high quality products and intimate service as its concept, and openly and responsibly makes the following solemn commitments to you:
1. The minimum warranty period for all products sold by our factory is one year, and for some products it is three years. Free door-to-door maintenance during the warranty period (except for faults or damages caused by human factors or irresistible natural phenomena).
2. After receiving the notice of repair, we rushed to the scene within seven working days and solved the problem.
3. Users can consult relevant technical problems through after-sales telephone and get clear solutions.
4. In case of performance failure in normal use, the company undertakes the above warranty service. In addition, if the applicable laws and regulations of the state have other explicit provisions, the company will comply with the relevant laws and regulations.
5. During the warranty period, paid maintenance services will be provided in the following circumstances.
(1) Damage caused by man-made or irresistible natural phenomena.
(2) Failure or damage caused by improper operation.
(3) Faults or damages arising from the modification, decomposition and assembly of products.
10. Instructions for ordering:Users are required to provide the following technical information when ordering:
1) Type, name and quantity of circuit breaker.
2) Rated current, rated short-circuit operation current.
3) Operating mode and operating voltage.
4) Equipped with current transformer current ratio.
5) Use occasion
