This video going to describe about power plant LT switchgear basic Things High voltage switchgear: The switchgear rated above 35 kV is termed as high voltage switchgear. Openings shall provide for natural ventilation, but the said openings shall be screened with fine weld mesh. It is a system offering high level of dependability. 415/690V LT Panels. with switchgear 4000 A Panels successfully tested at CPRI for temperature rise as per IS standards Form 1/2/3a/3b/4a/4b design, in DOP- IP- 54. In today’s commercial construction market, time is truly of the essence. It includes circuit breaker, switches, MCB, isolator, CT, PT, fuse, relays, control panel etc. x- endstream endobj startxref 0 %%EOF 205 0 obj <>stream Indian Oil Corporation Ltd Servo. These standards apply to Low Voltage switchgear (whose rated voltage is not higher than Timken India Pvt Ltd. Mahindra and Mahindra Ltd Powerol. These parts may be mechanical components or electrical components. 62 Fixed Pattern Vs Withdrawable Features of Switchgear. Basically every electric circuit needs a switching device & a protecting device. 'Z—ÕݛDᶏø©îü$g‘ñzƒÂ?£8ºþ˜0=íÆ*ÌØÓo çë7DÀeI—¿Ð„0¢­ãp°2FãeZ›h…z?¾làs»î$®¾ý”QÖ©Ì]GCØJ¤¼p±ƒr«bKËÜ`x!C¼ éWÛ5êNS2ØË'ØK£ÁýÁÌ?á㠌FP2¶Eâ¯>Ñîäêî—ǸяO(ž¬¸¢Ý$üãFï^÷…ˆE0ē„'àǪªç;ۖ÷Ü%åÔz¿â´^(µÒD0}ˆ4DŸí³!œÌðóâ? Components of LT Switchgear: Switch Fuse Unit (SFU), MCB, ELCB, MCCB, Types of Wires and Cables, Earthing. ßfÙ)²Ž÷§=´/½#÷öE8[²µÞ¥¢:¼Õ/ÂeÜɌE™14mÔÇ0~C3ßEÈ~µq³„;¡Ãühƒ¬N‹zXá=änÊc€œõšœ$\Äßуé#¾nïaqë>nà×d‚Vøå9ªG"d?àDۄ±xw!8%¬ˆ? h�b```a`` 3. Basic Types of Switchgear Components. Knockout holes of appropriate size and number shall be provided in the PCCs / MCCs/ PDBs in conformity with number, and size of incoming and outgoing conduits / cables. the switchgear to be heated up early and used as the main temporary power source. > SF6 is used in electrical equipment because of its dielectric ... Associated risk of failure of withdrawable components. all the accessories required to protect the LV system. |K£= Å ¹¨S! Main components of switchgear. LT Switchgear ABB Dorman Smith Merlin Gerin Telemecanique ..others Plant Capacitor Frako Epcos Aener Energia Havells Enerlux Ducati Magnetic Contactor Togami LG Dunga PFC Relay Frako Epcos Shizuki Beluk PR Tec. Dear Readers, Welcome to Switchgear & Protection multiple choice questions and answers with explanation. The personal protection due to an internal fault in medium voltage metal-enclosed switchgear became in IEC 62271-200 a significant higher importance. The parts subjected to normal wear and agingneed to be serviced for ensuring full reliability of the operations. These objective type Switchgear & Protection questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma. It is a high safety and reliability equipment using Schneider Electric low voltage protection components and switchgear. LT Switchgear (Power, control, metering and protection circuit ) LOW VOLTAGE ( LT) Switchgear As per IEC 60947, switchgears with rated voltages up to 1000 V ac and 1500 V dc are termed as low voltage (LV) switchgear. It is modular made up of a number of sections. 178 0 obj <> endobj 196 0 obj <>/Filter/FlateDecode/ID[]/Index[178 28]/Info 177 0 R/Length 92/Prev 766313/Root 179 0 R/Size 206/Type/XRef/W[1 2 1]>>stream Categories Switchgear, Circuit Breaker, Electrical Machines, Electrical Relays, Instrumentation, Power System, Substation 1. h޴�ms�8�?A��^��M����L� !ɵ$i�k�R^{]l�؂&��'ɘ�$��n�Z-�9��P�.�=z��ځV|憞���{!#�%/��D/�pLk��`���˗8c�w���w�j}G&8.r.�����J&&�ۇ%1Ɗk.����G�I�;щ{�1��"�G�(ʜg�l�˫���Ո��{L�+B�'��4V\n��z_��l|����:z��T,�x����B�� 1X�2&�z�c�c�`�S�����\� The equipment uses in the protection of power system, that equipment denotes as switchgear. component does not attain temperature more than 40 degree Celsius. At present this Standard is IEC 60439-1 (1999) + Am1 (2004) implemented at international level without any changes. Specially developed for the Electrical Engineering freshers and … Service Provider of HT & LT Switchgear Maintenance - HT Circuit Breaker Panel Servicing, Air Circuit Breaker Maintenance, Oil Circuit Breaker Maintenance and Fault Rectification of Control Panel offered by Saikiran Electrical, Mumbai, Maharashtra. CNC Fabricated fully bolted standardized designs Computer Aided Design(CAD)systems Panel enclosure degree of protection IP - 54, IP - 55 & IP 65 Anti corrosion treatment LT Switchboards H ) This switch is a manually-operated, lockable, two-position device (open/closed) which provides safe isolation of a circuit when locked in the open position. op�o�'�������%��)�H���bI��)6 (Oy� �z�[�s�0k¬X��c���rA�ȐCB equipment (switchgear and devices) and also in other applications like arc furnaces , window insulation, car tires and sport shoes! switchgear and controlgear is done by several type tests. 11. Switchgear Definition: The apparatus used for controlling, regulating and switching on or off the electrical circuit in the electrical power system is known as switchgear.The switches, fuses, circuit breaker, isolator, relays, current and potential transformer, indicating instrument, lightning arresters and control panels are examples of the switchgear devices. IS 8623 (Part 1) : 1993 IEC Pub 439 -1(1985) 2.1.1.1 Type-tested low-voltage switchgear and controlgear assembly (TTA) A low-voltage switchgear and controlgear assembly conforming to an established type or system Components saved in the library have connecting points. H - LV switchgear: functions & selection 2 The switchgear 2.1 Elementary switching devices Disconnector (or isolator) (see Fig. Intelligent snap functions ensure an easy positioning of high voltage switchgear components in the 3D CAD system. Blokset is an high power low voltage equipment. Generally electrical switchgear rated upto 1KV is termed as low voltage switchgear.The term LV Switchgear includes low voltage circuit breakers, switches, off load electrical isolators, HRC fuses, earth leakage circuit breaker, miniature circuit breakers and molded case circuit breakers (MCCB) etc i.e. Components of Switchgear Switchgear essentially consists of switching and protecting devices such as switches, fuses , isolators, circuit breakers , protective relays , control panels, lightning arrestors , current transformers , potential transformers, auto reclosures , … Circuit breaker; Isolator; Earth switch; Fuses Main Components Of Switchgears 10. A switchgear assembly has two types of components: Power conducting components, such as switches, circuit breakers, fuses, and lightning arrestors, that conduct or … Owners are expecting their projects completed faster, and at the same time expecting their projects to be built for less money. Busbar Busbar is a strip or bar of copper, brass or aluminium that conducts electricity within a switchboard, distribution board, substation, The cross-sectional size of the busbar determines the maximum amount of current Used to interconnect the loads and sources of electrical power. Components. three main components: the air-core sensors, the trip device (with rating plug), and the trip actuator. }��lK�f ��L�Zi��ĢHq��U�(�f֡��>%J��JQI)*T��I*q�*3�TK�Ԣ�O/�V�r^�B}.���q�|�*�_u�/���B3>���aXH����#7p�s���UO��Pd�{. Compare Quotations and seal the deal. The switchgear equipments is essentially used with switching & interrupting currents either under normal or abnormal operating condition. The global switchgear market size was $105.43 billion in 2019 & is projected to reach $170.40 billion by 2027, exhibiting a CAGR of 6.6% during forecast period %PDF-1.6 %���� )Yì°F¼i-\¼.Yx\2ËïöžrXˆ¬Ê^“Öïć}Y³úþ/»Žz‡¦Í ®´Yßá rK¼ý/øS¹ï. h�bbd``b`�@���`9$8y�;�P�i �H�M�m.�A, !�$D� ��H�I10128�Lf`$@�g�� ` These points are the basis for the assembly of the components. Maintenance covers a wide range of activities, all of which are required to keep the switchgear in ready condition at all times to enable it perform its functions satisfactorily. Exporting & supplying a comprehensive range of switchgear & allied products like electrical switchgear components, switch gears, switchgear parts, switch gear components, electrical switchgear components, limit switches and industrial switchgear. SWITCHGEAR AND PROTECTIVE DEVICES 2015 3 | P a g e SYLLABUS SWITCHGEAR AND PROTECTIVE DEVICES (3-1-0) MODULE-I (10 HOURS) Protective Devices: Philosophy of protection, Nature, Causes and consequences of faults, Zone of protection, Requirements of a protective scheme, Basic terminology components of protection scheme. LV switchgear: functions & selection Contents The basic functions of LV switchgear H2 1.1 Electrical protection H2 1.2 Isolation H3 1.3 Switchgear control H4 The switchgear H5 2.1 Elementary switching devices H5 2.2 Combined switchgear elements H9 Choice of switchgear H 0 … The interval at which the maintenance should be carried out depends upo… Types of Batteries, Important Characteristics for Batteries. Switchgear is a general term which includes a wide range of equipment concerned with protection. Although, switchgear are also classified on the basis of current rating, voltage class, operating methods, type of current, interrupting device, insulation tape, application and purpose. Available in standard range, these LT Switchgear can be availed in customized forms as required by clients. Therefore, like all the components of an electrical installation, the switchgear must also conform to the relative product Standard. The internal arc test, as a mandatory type test, is intended to verify the �1@����(�q��Q@�V�)T]�!o�ō�2����f���4�Ό��=�g�Wn�����jNC��M���9O�F3G���MW�`�p�;�]�z*q��)����� �@����`� ��, ��ho��Z - �b`�0�3��p=����B�&�6G���6����8y8�0i01���``N}$p ��� �@��? 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