• MRD-BJ Transformer  Neutral Ground Resistor System 1
MRD-BJ Transformer  Neutral Ground Resistor

MRD-BJ Transformer Neutral Ground Resistor

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In distribution systems technique of neutral ground is usually categorized into neutral unground, neutral ground via resistor, and neutral-point grounding via arc suppression coil. Differnent grounding ways decide various operating ways. With development of economy , over-head line which is the main way of past power grid has been replaced by cable running line. Meanwhile, some new equipments such as hermetic compact structure of SF6 swichgear, twisted polyethylene cable and zinc oxide arrester are more and more widely applied. Therefore, non-effective grounding technique is unsuitable to present situation. As a result, to set neutral point grounding effectively is the important facet of power supply we should work on.

If neutral grounding resistance cabinet is installed, the current flowing through grounding point and neutral point would be much lower than that when metallicity grounding. Therefore, adopting neutral grounding via resistance could decrease transient overvoltage when single-phase grounding, and eliminate arc flash hazards like transient overvoltage and some resonant overvoltage associated with the first ground fault, and moreover it could adopt relays to quickly locate the fault circuit and clear it up.

Mingrui has outstanding technical researching team and superior equipments, specially concentrate on research & development, production, sales and service of neutral grounding series products of power distribution system. The transformer neutral grounding resistance cabinet we developed and produced is applicable to 6~35KV power distribution grid of cable running lines in cities, large industrial enterprises, factories, airports, seaports, subway and etc. as well as 0.66KV system in mine digging and 0.4kv/6kv/10kv system in power plants.

Q:What are the effects of frequency variation on power users and power systems?
Influence of frequency variation on power users and power systems:There is a close relationship between the frequency of power equipment and the operation of power system
Q:Electrical equipment classification
Electric power system in a lot of power equipment, according to their role in the operation of different, usually divided into electrical equipment and electrical equipment two times. Directly involved in the production, transformation, transmission, distribution and consumption of electrical equipment called electrical equipment
Q:Would like to ask: railway communication, signal, power equipment installation related to mechanical and electrical engineering? If belong to, including specific aspects. Thank you
3, in fact, including the power of the two professional: power and electrification. Including contact network infrastructure, post, wire rack, remote control, lightning protection system, station lighting intelligent control etc..Belong to the scope of the installation should be the station (communication station) equipment into the test, the basis of processing and installation, equipment installation, commissioning of the single body, the electrical subsystem Unicom debugging, the whole system of professional debugging unicom. And other railway professional with the commissioning test, etc..
Q:What is the definition of abnormal equipment, equipment failure, equipment failure and equipment accident? From which power standard?
Accident: has occurred, resulting in loss of damage,Such as short circuit arc circuit breaker tripping, burning, scrap.
Q:What is the power plant
Are you going to apply for technical workers or Gang Gang ah, technology is the design of scientific research work what, workers do more
Q:The cost calculation of power equipment
Fault and professional people to do the cost of fault handling and so on, there is no fixed standard, depending on the site
Q:What is the installation equipment of the transformer on the power installation project
Installation of 10kV distribution transformer platformMost of the installation and use of double column transformer (capacity of less than 500kVoA), spacing of two rod is 2m, less than 20mm in the transformer tilt rod, power distribution transformer platform with two channel 2.4m is fixed on the two poles, the bench from the ground is not less than 2.5m, the gantry tilt should not be large in high 1/100. The bottom of the transformer is fixed with 4 screws on the platform, and the high and low voltage of the transformer should be equipped with dust cover. In addition, the installation of iron parts are galvanized, and more than 100kVoA transformer to install a disconnecting switch.
Q:Ask the expert about the design of the power system diagram, 6kV side of the electrical equipment how to supply
220380 through 6KV.4kvIf you need to use 6kV from the 6KV bus with the line (equipped with power distribution switch), without the 6KV transformer, your system diagram is not equipped with the outlet is wrong
Q:What are the relevant national standards for power equipment?
I don't know what to look for on the Internet
Q:What is the meaning of the high - voltage high - voltage device in power system, which is mainly used to protect the equipment and equipment
High voltage means high voltage, similar to the above. Alternating current has active power and reactive power, the frequency response is the balance of active power, and the voltage response is reactive power balance

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