MRD-BJ Transformer Neutral Ground Resistor

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 unit

Supply Capability:: 30 unit/month

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Neutral Grounding Resistor is used to protect power transformers, power generators and other associated equipment in your power systems against 50/60 Hz faults (short circuit) and transient phenomena (lightning).

Applicable Standards
The design of the product complies with the flowing standards:
DL/780-2001   Neutral Grounding Resistor in Power Distribution
IEC726           Dry-Type Power Transformer
DL/T620-1997  Overvoltage Protection and Insulation Co-ordination of AC  Electrical Equipments
IEC60-1         Experimental Technique of High Voltage
GB1208-1997    Current Transformer
IEC60529:2001  Enclosure Protection Degree (IP code)
IEEE32-1972    Technique Terms and Experiment of Neutral Grounding Device
IEC60081       Insulation Co-ordination of Transmission and Distribution Device of High Voltage.

DL/T593-1996   Common Specifications for Purchasing High Voltage
　　　　　　　　　　　　  Switch Equipment.
GB50150-1991  Electrical Equipment’s Hand-over and Test Standard of
                Electrical Device Installation Project.

Typical Technology Parameters

Product Model	System Voltage （kV）	Rated Current （A）	Current Flowing Time in short Time（S）	Rated Resistor Value Ω （±5%）	Insulation Withstanding Voltage kV
Product Model	System Voltage （kV）	Rated Current （A）	Current Flowing Time in short Time（S）	Rated Resistor Value Ω （±5%）	8/20μS Thunder Stroke	1min Power Frequency
MRD-BJ-6/36.4	6.3	100	10	36.4	60	32
MRD-BJ-6/18.2	6.3	200	10	18.2	60	32
MRD-BJ-6/9.09	6.3	400	10	9.09	60	32
MRD-BJ-6/6.06	6.3	600	10	6.06	60	32
MRD-BJ-10/15.16	10.5	400	10	15.16	75	42
MRD-BJ-10/10.10	10.5	600	10	10.10	75	42
MRD-BJ-10/7.57	10.5	800	10	7.57	75	42
MRD-BJ-10/6.06	10.5	1000	10	6.06	75	42
MRD-BJ-35/20.20	35	1000	10	20.20	185	95
MRD-BJ-35/10.10	35	2000	10	10.10	185	95

Q:1, what are the fire hazards caused by electricity in the server room?2 what are the fire hazards in the server room?: Three, should be based on the size of the project need to determine the location of the fire to determine the use of independent electric detector or non independent detectorFour, according to the specific circumstances of the electrical equipment to determine the electrical fire monitoring detector form and installation location

Q:Is there a warranty period for power equipment?: Warranty period is not specified, is determined by the relevant test standards

Q:Is the GIS in the electric power high voltage switch cabinet: High voltage electrical (mainly above 35kV) exposed to the air, common substation circuit breaker, isolating switch, bus, phases, equipment, and equipment between between and so must have a relatively large safety distance. This area is relatively large, but also exposed to the outside of the security risks are more. GIS is a kind of technology, the bus CircuitBreakers isolating switch for high-voltage electric appliances shell pack, seal filled with six sulfur hexafluoride gas, according to the elements of seal, not a whole big box, such as every bus from the outside is a large cylinder etc.. This equipment can be very compact layout, and a sealed shell, but also more secure.High voltage switchgear is only a device installed in a cabinet, and this is generally high voltage 10kV, up to 35kV, and then there is no general high switch cabinet this form. Of course, you can also use GIS technology. But generally speaking, GIS is more than 110kV GIS switch station.You can Baidu image search GIS switch station". You can see that the big cylinder together is the GIS switch equipment, large cylinder which is the bus, circuit breakers and other equipment, see pictures more intuitive.

Q:The relationship between primary equipment and two equipment in power system: Including generator, power transformer, circuit breaker, isolating switch, power bus, power cables and transmission lines, etc..

Q:What is the meaning of the high - voltage high - voltage device in power system, which is mainly used to protect the situation,: That response to the power parameters is high frequency, this requires high cycle splitting device, tripping the corresponding circuit breaker, to remove the part of power grid connected or separated from the original into two or more power, get rid of the accident or the narrow scope of the accident to

Q:How to strengthen the management of electric power information communication equipment: Problems in the management of information communication equipment1 personnel structure is not reasonable. With the continuous expansion of the power grid, power information communication equipment is also increasing. But at present, there are some problems in the management of electric power communication equipment, such as the lack of professional staff and the lack of post. At the same time, due to the lack of post phenomenon, resulting in the equipment management and maintenance work in the process of increasing the workload, making the existing staff complaints, work quality and work enthusiasm can not be guaranteed. On the other hand, because the new staff less power communication professionals confidence aging trend is more and more serious, the personnel structure imbalance restricts the progress and development of electric power information and communication equipment management to a great extent.

Q:Power equipment are 10KV or less, there is a business license, will be issued by the electrical installation (repair, test) power facilities license five and above qualifications, you do not need a safety production license ah? Urgently needed: 10KV below the district power equipment installation: tender units need at least a business license qualification certificate (Level 3 or above) safety production license,

Q:What is the installation equipment of the transformer on the power installation project: Installation of drop fuseHigh and low voltage side of distribution transformer should be equipped with fuse. High voltage side fuse at the bottom of the vertical distance from the ground is not less than 4.5m, the fuse and the horizontal distance of not less than 0.5m, in order to smooth down the fuse tube is easy to operate and fuse, axis drop type fuse with the vertical line of 15% ~ 30% angle. The vertical distance to the surface of the bottom of the low voltage side fuse shall not be less than 3.5m, and the horizontal distance of each fuse shall not be less than 0.2m.

Q:What are the customer groups faced by power intelligent equipment?Products such as electric capacitor reactive power control (capacitor module), reactive power compensation controller, the series of electric power meter, active filtering equipment, power monitoring system, energy management system, operating system and DC power system accessory products.: If the capacitor is connected in series on the line, the line reactance is compensated and the parameters of the circuit are changed. Series compensation can reduce the loss of line voltage, improve the terminal voltage level, reduce the power loss and power loss, and improve the transmission capability.4 power capacitors include phase shifting capacitors, electric heating capacitors, voltage equalizing capacitors, coupling capacitors, pulse capacitors, etc.. Phase shifting capacitor is mainly used for compensating reactive power to improve the power factor of the system; the electrothermal capacitor is used to improve the power factor of intermediate frequency power system; equalizing capacitor in parallel with the general circuit breaker on fracture pressure; coupling capacitor is mainly used in electric power communication, measurement, control and protection of transmission line the capacitor is used for pulse; pulse circuit and DC high voltage rectifier filter.

Q:Power equipment Market Overview: 2013 first quarter, China's economy did not continue to stabilize the situation in the second half of 2012 rebounded, GDP grew by 7.7%, compared with the previous year's 4 quarter fell by 0.2 percentage points, lower than previously expected levels. The slowdown in economic growth driven by the demand for electricity consumption growth decreased synchronously, a quarter of the total electricity consumption growth rate year-on-year decline, the overall balance of the country's electricity supply and demand, in this situation, the national power investment continued to decline, a quarter of the country's main power generation enterprise project investment 61 billion 800 million yuan, down 17.1% over the previous year.

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