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Alibaba.com offers 1,014 1250kva power transformer products. A wide variety of 1250kva power transformer options are available to you, such as usage, phase, and coil structure.
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Get Price2014-11-5u2002·u2002RE: Reverse feeding power transformer 1250kVA 20/0.4kV Dyn11 Marmite (Electrical) 7 Nov 14 01:42 Worry less about the transformer, and worry more about system grounding and protection for faults on your 20kV line.
Get PriceWith the large-scale application of 20kV power grid, unified grounding system and transformer vector grouping is critical to the economic and technical performance of the power system. The manufacturing complexity, manufacturing cost and reliability of transformer with different vector group is analyzed in this article, and the applicability of different neutral grounding state in 20kV power ...
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Get Price2018-9-10u2002·u2002Neutral grounding by a fixed limiting impedance : The limiting impedance can be inserted between the MV neutral of the HV/MV transformer of the substation and the ground of the substation. To be independent from the presence of a MV neutral point of the HV/MV transformer of the substation, it is possible to create an artificial neutral point.
Get Price2021-9-13u2002·u2002Earthing transformers. An earthing transformer is usually associated with three-phase supply systems. On a three-phase system, the neutral would be earthed either directly or through some limiting impedance resistance. When the neutral point is not available or does not exist with a delta secondary winding of the transformer, a neutral point ...
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Get Price2021-6-7u2002·u200233. 31 1502 – Communication Site Grounding Typical Grounding 34. 31 1503 – Communication Tower Grounding Details 35. 31 1504 Rev. A – Building Grounding Substation Details 36. 31 1505 Rev. A – Building Grounding Remote Site Details 37. 31 1506 Rev. A – Guy Tower Grounding Anchor Ground Details 38. 31 1700 Rev.
Get Price2018-7-15u2002·u2002Power transformers 48 7.1 Main characteristics 46 7.2 Choice of transformers based on energy losses and efficiency 46 7.3 Efficiency requirements and classes for transformers 49 7.4 Selection criteria for transformers based on capitalization of the losses 49 7.5 Example of a transformer for a transformation ...
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Get Price2021-9-13u2002·u2002Earthing transformers. An earthing transformer is usually associated with three-phase supply systems. On a three-phase system, the neutral would be earthed either directly or through some limiting impedance resistance. When the neutral point is not available or does not exist with a delta secondary winding of the transformer, a neutral point ...
Get PriceThese principles are incorporated into the following products: Oil distribution transformers from 50 to 3,150 kVA. Large oil distribution transformers up to 20 MVA. Pole mounted transformers. Transformers for heating of track-switches or for pre-heating of trains. Neutral grounding transformers.
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Get Price2021-6-7u2002·u200233. 31 1502 – Communication Site Grounding Typical Grounding 34. 31 1503 – Communication Tower Grounding Details 35. 31 1504 Rev. A – Building Grounding Substation Details 36. 31 1505 Rev. A – Building Grounding Remote Site Details 37. 31 1506 Rev. A – Guy Tower Grounding …
Get Price2013-6-14u2002·u2002The transformers whose capacities are greater or equal to 2500k VA encounter 199 S/C accidents in the total 898 tests in high power laboratories in Korea, Sweden, Great Britain, Italy, Poland, Holland, Brazil, India, Rumania, South Africa, Russia, Mexico, the Czech Republic and Germany. The fail rate is 22%.
Get Price2019-7-20u2002·u2002The line to neutral voltage is. VL-N = 6600/√3 = 6600/1.732 =3810 Volts. Transformer full load secondary current is 1400 amperes. Therefore, the resistance value required to limit the fault current to the transformer maximum current carrying capacity is; R = V/I.
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Get PriceHello everyone! Im having some doubts regarding where I should ground the Neutral and why ? This is a new installation which is in an industry that will have its own substation 15/0.4Kv with a transformer of 1250KVA 15/0.4KV DY. This substation will only feed the MainCircuitBreaker of the plant which is located 80meters away from the substation, there will be no other consumers from …
Get Price2016-6-27u2002·u2002415V, 1250kVA, 3 Phase, 50 Hz, 0.8 p.f, self excited, self regulated, brushless type, drip proof conforming to IS: 4722 with latest amendments. The DG set shall be capable of functioning at places situated altitude up to 1000 meters and ambient temperature upto 45 deg. Centigrade and relative humidity upto 95%.
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Get PriceHello everyone! Im having some doubts regarding where I should ground the Neutral and why ? This is a new installation which is in an industry that will have its own substation 15/0.4Kv with a transformer of 1250KVA 15/0.4KV DY. This substation will only feed the MainCircuitBreaker of the plant which is located 80meters away from the substation, there will be no other consumers from this ...
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Get Price2021-3-23u2002·u200233 Neutral grounding resistor box for transformer One Unit 8.00 11,176.47 89,411.76 400A. 9.53ohm Zinc oxide lightning arrester: Y10W-390/900
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Get Price2019-1-9u2002·u2002The factory power supply is taken from 11kV bus via the 1250kVA transformer to lower the voltage from 11kV down to 0.4KV and connected to switchgear which supplies power to auxiliaries control system and for workshop lighting, ventilation, security and common equipment.There is automatic power factor compensation device on the 0.4KVbusbar to ...
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