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What is the minimum resistance when megohming 13.2kv transformer?
Wiki User
∙ 12y ago
A megger would not be suitable for testing insulation resistance of a 13.2-kV transformer, as the transformer's voltage rating is significantly higher than the output voltage from a megger.
Wiki User
∙ 12y ago
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What is the voltage of high tension electrical transmissions towers?
Usually HV is 33KV and 66KV, EHV is 132KV, 220KV and 400KV and UHV is 800KV and 1200KV
Components used to build the substation?
Substation main components include the following:1. The power transformer which is the heart of the Substation. It is the Power transformer that steps up (in the case of a step up Substation for transmission) or steps down (in the case of step down Substation for distribution) the voltage e.g. 132/33kV (step down), 33/132kV (step up).2. The Auxiliary transformer (which is fed from the output of the Power Transformer). This transformer powers the substation accessories and auxiliary equipments such as controls, lighting, Substation control room etc)3. Disconnecting switch or Isolators4. Earthing switch for grounding the main line in case there is need for maintenance work5. Control relays and Protective relays for short circuit, over voltages etc6. Instrument transformers e.g. voltage transformers, current transformers that will take current from the main high voltage line in case of an over current on the line and produce a current that the protective relays can operate with.7. Supervisory Control and Data Acquisition (SCADA) systems for line monitoring and control8. DC power supply system in the form of batteries for supplying DC loads such as emergency lightings, relays, rectifiers, chargers etc.9. Lightning arrestors10. Surge arrestors11. Switchgears for the high and low voltage levels, AC/DC panels12. Circuit breakers for the high and low voltage levels
How do you calculate the power consumption in a factory can you give me an idea?
its consist of 2 meters 1 is main meter 2 is check meter , actually this consumption was depend on CT, PT's and by this can find out multiplication factor (M.F).consumption = (check meter reading KWH)*M.F ------1Ex for M.F cal: system-C.T=200/1A, P.T=132Kv/110V,Load- C.T=100/1A, P.T=132Kv/110v.M.F=System C.T*P.T/Load C.T*P.Tthere fore (200/1*132/110)/(100/1*132/110) = 2.-------2Sub 2 in 1 then u got consumption.
What is allowable value of weight span and wind span ratio in transmission line?
Its depends on location and type of towers. Supposed the transmission line is erected at hill area and second line is erected in desert area and third one in forest area. Then the allowable value of weight span and wind span ratio in transmission line will different. Also this ratio will depends on types of tower . Like the value is different in 132KV, 220KV , 400KV and 765KV.
Detail specification of transformer oil used in 132kv and above transformer?
Insulating oils for general application which are covered by this specification are manufactured from predominantly naphthenic base crudes. Distillates from these crudes may be acid refined, hydrogen treated, solvent extracted, or processed by other suitable refining methods to yield acceptable mineral insulating oils which meet the test requirement at the point of delivery. Oils from paraffinic crudes may also be covered by this specification with the exception of performance at low temperatures. Other requirements may be needed for these products to ensure proper function at low temperatures. The use of all additives must be identified. An additive is a suitable chemical substance which is deliberately added to a mineral insulating oil to improve certain characteristics. Uninhibited oils must be free of additives, either natural or synthetic that are used to improve oxidation stability. This includes but is not limited to 2,6 ditetiary-butyl phenol, 2,6 dietertiary-butyl cresol, or metal deactivators such as benzotriazole and its derivatives.Inhibited oils are insulating oils which have been supplemented with either 2,6 ditetiary-butyl phenol or 2,6 dietertiary-butyl cresol or any other specified and acceptable oxidation inhibitor. If an additive other than 2,6 ditetiary-butyl phenol or 2,6 dietertiary-butyl cresol is used, appropriate limit values for oxidation stability tests (those for Type I or Type II oils) should be agreed to by the purchaser and seller. If more than one additive is used, the more stringent limits for oxidation stability, those for the Type II oils would apply.Pour point depressants, gassing tendency improvers, additives for corrosive sulfur and static electrification (metal passivators), antifoaming agents and other additivesAll additives should be specifically identified or at a minimum identified by class of compounds such as metal passivator if the specific information is proprietary. Insulating oils covered by this specification shall be produced from proven crudes by suitable refining techniques, both of which shall have been approved by the purchaser. After such approval, no change in crude source, processing, or refining methods shall be made that results in a substantial change in the product characteristics without the prior approval of the purchaser.Shipping containers should be dedicated to new transformer oils. The shipping method and containers shall be agreed upon by purchaser and seller and shall not be changed without prior approval of the purchaser.
What is an acceptable value of 132kv Isolator contact resistance test?
132kv MOCB acceptable value of somthing 150 micro ohms.
How many disk insulator used for 132kv?
9 insulators
What will happen if a new branded 132KV transformer is charged at the IR value of 150Megaohm between HT winding and Earth remaining IR values being found infinity?
Sir I am Imran khan in nepal my problem is 6000KVA Step down Transformer is not charging. Transformer Pri- 33000V /105A Sec- 6900V / 502Atransformer all test (open & short circuit ) good . but problem is HT(IR)= value this time IR value 50M ohmBefore 3days HT(IR) = value is 7000M ohm suddenly start Transformer result is Transformer not charging & HT(IR) value is down 50M ohm.
What is a 380 132 substations?
it means..it is stepping up the power of 132KV to 380KV on the transmission lines.
Safety distance from 132kv power line?
The safety distance from a 132 kv powerline is 1.4 metres
What does a primary substation do?
Primary substation - when the transformer is HV/MV or MV/MV. e.g. substation designed for 132kV/33kV or 230kV/22kV or 33kV/11kV etc stepped down for MV distribution (mainly for utilities and heacy industries) Secondary substation - when the transformer is HV/LV or MV/LV. e.g. substation designed for 11kV/400V or 6.6kV/400V etc stepped down for LV distribution (mainly for residential, commercial) sometime referred to as a kiosk substation.
Explain the transmission and distribution of electricity from the generation station to the consumer?
transmission and distribution of electricity are the way of regulate voltage to the minimum rate in which can be benefit to the consumers. From generating station , voltage generated is up 16/25kv which step up upto 330kv this generating voltage now step down in the transmission station through the step down transformer which is 132kv this voltage now transmitting to distribution station where voltage now step down to 33kv, this 33kv now stepdown to 415v for three line and 240/220v for a line for the uses of consumers.
What is Indian railway transmission line voltage?
220v, 415v, 6.6 kv, 11kv,33kv,132kv,400kv
Design of earthing calculation 132 kv switch-yard?
Refer IEEE 80- 2003 For Design of grounding of 132kV substation.
What is the voltage of high tension electrical transmissions towers?
Usually HV is 33KV and 66KV, EHV is 132KV, 220KV and 400KV and UHV is 800KV and 1200KV
How much voltage for 132kv UG cable high voltage testing?
it depends on the specification,,,,,,in saudi arabia as per sec standards 152kv voltage should be applied for a period of one hour.
What is 132kv tower height?
the general height is 25-27mts,the first conductor is placed 17mts above the ground and rest of conductors placing 1st-2nd is 3.1mts and 2nd-3rd is 2.6mts
