11 kv lightning arrester pdf

For ease of reference, we have described them as surge arresters or only arresters for all types. Ur kv station class class 4 20,000 amp nominal discharge current, ur kv station class class 5 20,000 amp nominal discharge current, ur 360 kv station class. A lightning arrester is essentially a collection of billions of microscopic junctions of metal oxide grains that turn on and off in microseconds to form a current path from the top terminal to the ground terminal of the arrester. Why do we make the rating of surge arrester kv always. Technical specification for 11kv22 kv surge arresters. A wide variety of 15kv lightning arrester options are available to you, such as safety standards, usage, and standard or nonstandard. At the core of the raychem hda design is our improved zno varistor. This will be applicable to the effectively earthed 11 kv systems coefficient of earth not exceeding 80 percent as per is. Siemens surge arresters have been successfully tested to the latest ansiieee standard c62.

The specification stipulates the minimum requirements for 11kv and 33 kv surge arresters acceptable for use in the company and it shall be the responsibility of the supplier to ensure adequacy of the design, good workmanship and good engineering practice in the manufacture of the surge arresters for kenya power. The voltage was recorded at the substation 11022 kv and at all loads in the electric network, and was drawn by the plotxwin program. Overvoltage protection metaloxide surge arresters in. Both arrester survival and equipment protection must be considered in arrester selection. Type polimhm surge arresters maximum system voltage 2. Model study of lightning protection of 110 kv substation. This voltage is determined during the course of testing the arrester to ieee standard c62. Type dmxn surge arresters maximum system voltage 2 to. It is an ac rating and should in all circumstances be higher than the maximum linetoground.

Surge arresters are used to protect transmission lines, transformer or other equipments from transient voltage. Critical points are typically close to the line entrance of. The function of the surge arrester is to allow the discharge of any dangerous overvoltage before it can do damage and then to restore the line to. They help in maintaining the voltage produced by the lightning. The main bus 33kv is connected to grid located at sector25, indiranagar, lucknow. A lightning arresters or a surge diverter is a protective device which conducts the high voltage surges on the power system to the ground. Lightning arrester installation 4kv existing circuit 12.

Arresterfacts001 arresterworks, consultants, arrester. Franklin lighting arrestor is a device used to protect the electronic power systems from the damage. Mediumvoltage surge arresters digital asset management. The designs comply with the iec 600994 and ansiieeec62. We also show the performance of mov arrester metal oxide varistor inovercoming lightning stroke trouble, where arrester can decrease voltage up to 15. It is customary, therefore, to call an arrester up to 245 kv a lightning arrester and beyond 245 kv a surge arrester. The lighning arrestoer rating should be above this level but below 11 kv so that 9 kv arrestor is suitable.

B u k u p e d o m a n p e m e l i h a r a a n p t p l n p e r s e r o j l t r u n o j o y o b l o k m i 1 3 5 j a k a r t a l i g h t n i n g a r r e s t e r d o k u m e n n o m o r. Abstract the thesis deals with the analysis of construction of power lines and substation switchyard of 3311 kv. Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and inservice field performance. Line installation and protective equipment specifiers guide.

Discharge voltage table in every arrester datasheet, you will find a most important table about the discharge voltage of the arrester in question. Pdf lightning protection of overhead power distribution lines. Up to 245 kv lightning surges and beyond 245 kv switching surges are found to be more severe, section 18. Mo resistor is generally in the range of 2 kvcm at a given current ib in. Ieeeiec lightning arrester arresters for ac and dc applications. The dmxn surge arrester is designed to meet the following. The device which is used for the protection of the equipment at the substations against travelling waves, such type of device is called lightning arrester or surge diverter. Polymer lightning arrester 30kv 5ka lightning arrester.

Get best price and read about company and get contact details and address. Electrical centre a 1 11 kv 45 kn disc insulator nos 260. Coordination of parallelconnected mo surge arresters. The voltage was recorded at the substation 11022 kv and at. The range comprises of ac and dc solutions up to 1,100kv and arresters for special applications like railways, dcvoltage limiting devices and many other purposes. Abb offers a complete range of surge arresters for high and medium voltage applications. Design of lightning arresters for electrical power systems.

Our 30kv 5ka polymer lightning arrester is made using cutting edge technology operated by highly skilled technocrats. As pioneers in the field of silicone rubber sr insulation and one of the few suppliers. All ferrous parts should be galvanized as per is 2633 1972 or its latest. Type polimhm surge arresters maximum system voltage. Mansa trading company offering 75a200a 11 kv high voltage lightning arrester at rs 1200piece in delhi. Lightning arrester lighting arrester oem manufacturer. In todays life electricity plays a very vital role. Select base part number of lej215 from page 11 for 15 kv voltage class. Technical specification construction of 3311 kv primary substations. Highvoltage surge arresters safe and reliable protection of electrical equipment abb surge arresters are the primary protection against atmospheric and switching over voltages. A dc surge arrester is generally composed of a shell, a nonlinear resistance sheet, a spring, a pressure release device, a sealing device, etc. The source of the lightning was represented by the atp models type15 surge function and type ramp function and the surge arrester was represented by the movtype 92 component.

Polymer housed moa for 110kv the polymer housed moa for 10kv. Note that on page 11 reference is also made to tables cr1 and cc1. Hi friends, in this article, i am going to discuss about lightning arrester types and lightning arrester working principle. It is designated by the maximum permissible value of power frequency voltage which it can support across its line and earth terminal while still carrying effectively and without the automatic extinction of.

High voltage surge arrester specification applications. Te connectivity raychem mv surge arresters hda0 abc additional accessory options available on request. Lightning arrester the substation equipments such as conductors, transformers, etc. Available as singleunit arrester rated up to 300 kv or twounit arresters for. This specification covers the general requirements of the design, manufacture, testing, supply and delivery of surge arresters of gapless metaloxide type for 11kv. The top countries of supplier is china, from which the percentage of 11kv polymeric. Technical specification of 11 kv 5 ka lightning arrestor galvanization. A wide variety of 11kv polymeric lightning arrester options are available to you, there are 63 suppliers who sells 11kv polymeric lightning arrester on, mainly located in asia. The rated voltage of lightning arresters shall be 9 kv rms. In this context, this research work proposes multiple lightning arresters for the protection of 11 kv substation transformers under different. Now the transmission line first parallel connected with lightning arrester to diverge surge, followed by cvt connected parallel.

The application and selection of lightning arresters. Pdf model study of lightning protection of 110 kv substation. This is a lightning arrester from an 11kv power distribution line with an interesting feature to clear itself electrically when sustained current flows through it. Surge arresters mv hv 11kv 33kv medium high voltage. Metaloxide surge arresters in highvoltage power systems.

The ge tranquell line of surge arrester products provide excellent protective. A higher rated arrester increases the ability of the arrester to survive on the power system, but reduces the protective margin it provides for a specific insulation level. Lightning arrester is to protect the system from any high. Arrester fundamentals application of arresters and other overvoltage protection schemes. The surge arrestor shall be connected between phase and earth to an overhead system that is generally solidly earthed neutral 11kv and 33 kv. It consists of a spark gap in series with a nonlinear resistor. The arrester mcov is shown in group 2 of table 1 and given in kv 1 kv volts. Arresterfacts001 arrester lead length why does it matter the purpose of an arrester is to limit the voltage stress on the insulation electrically in parallel with it during a surge event. Ieee 11 0 50 100 150 200 250 300 0 20 40 60 80 100 120 m peak current ka darveniza love whitehead ieee suzuki.

Pdf the highvoltage switchgears are frequently exposed to lightning strokes. About 37% of these are power distribution equipment, 17% are other electrical equipment. No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. Surge arrester placement for substation lightning protection. This table documents how well the arrester clamps lightning and switching surges, which is the fundamental purpose of arresters. The proper selection and application of lightning arresters in a system involve.

We can define a lightning arrester as a collection of billions of microscopic junctions of metal oxide. The lightning arresters are used to protect power system from high voltage surges. Type dmxn surge arresters maximum system voltage 2 to 36 kv. Lightning impulse the lightning impulse test was performed under dry conditions by applying 15 positive and 15 negative fullwave lightningimpulse voltages to the test sample. Surge diverter lightning arrester working lightning. Lightning arrester ratings the rating of a lightning arrester is given below, normal or rated voltage. The demand of electricity is being increased day by day. Pdf effect of grounding resistance and lightning arrester non. In other words, lightning arrester diverts the abnormals high voltage to the ground without affecting the continuity of supply.