11 kv lightning arrester pdf

The dmxn surge arrester is designed to meet the following. 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. As pioneers in the field of silicone rubber sr insulation and one of the few suppliers. For ease of reference, we have described them as surge arresters or only arresters for all types. We also show the performance of mov arrester metal oxide varistor inovercoming lightning stroke trouble, where arrester can decrease voltage up to 15. Technical specification construction of 3311 kv primary substations. Design of lightning arresters for electrical power systems. Polymer lightning arrester 30kv 5ka lightning arrester. Mediumvoltage surge arresters digital asset management.

Abb offers a complete range of surge arresters for high and medium voltage applications. Available as singleunit arrester rated up to 300 kv or twounit arresters for. Note that on page 11 reference is also made to tables cr1 and cc1. Overvoltage protection metaloxide surge arresters in. Ieeeiec lightning arrester arresters for ac and dc applications.

It is customary, therefore, to call an arrester up to 245 kv a lightning arrester and beyond 245 kv a surge arrester. Surge arresters mv hv 11kv 33kv medium high voltage. Electrical centre a 1 11 kv 45 kn disc insulator nos 260. 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. Lightning arrester installation 4kv existing circuit 12.

A lightning arresters or a surge diverter is a protective device which conducts the high voltage surges on the power system to the ground. Arrester fundamentals application of arresters and other overvoltage protection schemes. Te connectivity raychem mv surge arresters hda0 abc additional accessory options available on request. 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. The lighning arrestoer rating should be above this level but below 11 kv so that 9 kv arrestor is suitable. It is an ac rating and should in all circumstances be higher than the maximum linetoground. In todays life electricity plays a very vital role. 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. Up to 245 kv lightning surges and beyond 245 kv switching surges are found to be more severe, section 18. The main bus 33kv is connected to grid located at sector25, indiranagar, lucknow. Lightning arrester ratings the rating of a lightning arrester is given below, normal or rated voltage. All ferrous parts should be galvanized as per is 2633 1972 or its latest.

Model study of lightning protection of 110 kv substation. Type polimhm surge arresters maximum system voltage. Pdf model study of lightning protection of 110 kv substation. Surge arresters are used to protect transmission lines, transformer or other equipments from transient voltage. Surge arrester placement for substation lightning protection. Siemens surge arresters have been successfully tested to the latest ansiieee standard c62. Technical specification of 11 kv 5 ka lightning arrestor galvanization. Select base part number of lej215 from page 11 for 15 kv voltage class. Discharge voltage table in every arrester datasheet, you will find a most important table about the discharge voltage of the arrester in question.

Technical specification for 11kv22 kv surge arresters. 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. Now the transmission line first parallel connected with lightning arrester to diverge surge, followed by cvt connected parallel. 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. 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. The rated voltage of lightning arresters shall be 9 kv rms. 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. Lightning arrester is to protect the system from any high. Coordination of parallelconnected mo surge arresters. This voltage is determined during the course of testing the arrester to ieee standard c62. A dc surge arrester is generally composed of a shell, a nonlinear resistance sheet, a spring, a pressure release device, a sealing device, etc. Hi friends, in this article, i am going to discuss about lightning arrester types and lightning arrester working principle. They help in maintaining the voltage produced by the lightning.

Lightning arrester lighting arrester oem manufacturer. In other words, lightning arrester diverts the abnormals high voltage to the ground without affecting the continuity of supply. Surge diverter lightning arrester working lightning. Arresterfacts001 arresterworks, consultants, arrester. Mansa trading company offering 75a200a 11 kv high voltage lightning arrester at rs 1200piece in delhi. Mo resistor is generally in the range of 2 kvcm at a given current ib in. The proper selection and application of lightning arresters in a system involve. Pdf the highvoltage switchgears are frequently exposed to lightning strokes. Get best price and read about company and get contact details and address. 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. 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.

A wide variety of 15kv lightning arrester options are available to you, such as safety standards, usage, and standard or nonstandard. Our 30kv 5ka lightning arrester is made with precision and our quality guidelines are as per the international quality standards to ensure cost effectiveness and high value to. About 37% of these are power distribution equipment, 17% are other electrical equipment. 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. This specification covers the general requirements of the design, manufacture, testing, supply and delivery of surge arresters of gapless metaloxide type for 11kv. Why do we make the rating of surge arrester kv always. The voltage was recorded at the substation 11022 kv and at all loads in the electric network, and was drawn by the plotxwin program. The ge tranquell line of surge arrester products provide excellent protective. This will be applicable to the effectively earthed 11 kv systems coefficient of earth not exceeding 80 percent as per is. It consists of a spark gap in series with a nonlinear resistor. Pdf lightning protection of overhead power distribution lines. Type dmxn surge arresters maximum system voltage 2 to. Line installation and protective equipment specifiers guide.

The top countries of supplier is china, from which the percentage of 11kv polymeric. Pdf effect of grounding resistance and lightning arrester non. The demand of electricity is being increased day by day. Following assembly, each arrester is subjected to a battery of electrical tests to assure the highest quality and inservice field performance. Metaloxide surge arresters in highvoltage power systems. 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. Critical points are typically close to the line entrance of. 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. Polymer housed moa for 110kv the polymer housed moa for 10kv. The surge arrestor shall be connected between phase and earth to an overhead system that is generally solidly earthed neutral 11kv and 33 kv. The lightning arresters are used to protect power system from high voltage surges. High voltage surge arrester specification applications. The designs comply with the iec 600994 and ansiieeec62. The arrester mcov is shown in group 2 of table 1 and given in kv 1 kv volts.

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. Type dmxn surge arresters maximum system voltage 2 to 36 kv. Peak voltage amplitude kv distance to point x m u yphase a u yphase b u yphase c u zphase a u zphase b. Our 30kv 5ka polymer lightning arrester is made using cutting edge technology operated by highly skilled technocrats. At the core of the raychem hda design is our improved zno varistor. Both arrester survival and equipment protection must be considered in arrester selection. This table documents how well the arrester clamps lightning and switching surges, which is the fundamental purpose of arresters. No description of technical parameter unit data 1 nominal system voltage kv rms 33kv 2 maximum system voltage kv rms 36. Lightning arrester the substation equipments such as conductors, transformers, etc. Franklin lighting arrestor is a device used to protect the electronic power systems from the damage. In this context, this research work proposes multiple lightning arresters for the protection of 11 kv substation transformers under different. The application and selection of lightning arresters.