Wiring will only be carried out after the conduit installations and plaster work is completed. Installation and operating principles for mv switchgear. Manual installation commissioning environment and recycling. Method statement for hv switchgear installation saupimmel. High voltage system standard 2 introduction the hv system includes all primary and secondary systems, as required for electrical power transfer to the electricity distribution network including, without limitation. Most switchgear and electrical enclosures come standard with a plexiglass viewing pane. The installation, connection, operation, checking, commissioning, decommissioning and maintaining of mediumvoltage switchgear should only be carried out by suitably qualified personnel. Both have large installed bases of high voltage hv and medium voltage mv switchgear.
It applies to the operation of high voltage switchgear for the purpose of issuing an access authority and subsequent. Typically, switchgear in substations are located on both the high and lowvoltage sides of large power transformers. Electrical safety guidance for high voltage systems. Ageing of the system impact on planning of the working. Installation, maintenance, and end of life of a gas. Flp high voltage switchgear becker mining systems ag. High voltage circuit breaker, is the main component of hv switchgear, hence high voltage circuit breaker should have. Instructions for installation, operation, and maintenance. Opening the switchgear under normal operating conditions or for maintenance, for example to replace hv hrc fuses, is possible. Using this sophisticated procedure, measurement is very precise and does. No wires will be drawn through unless conduit and trunking installations have been completed and inspected and cleaned. Erection procedure for hv switchgear part 1 positioning of cubicles positioning of the cubicles should start near to the centre of the switchboard, installing as early as possible the enclosures associated with any special chambers or trunking. File these instructions with other instruction books, drawings and descriptive data of the switchgear. Hv switchgear installation procedure ensure all civil works are completed for the area including floor paint to carryout.
Whether indoor or outdoor, concrete slabs or pilings, the foundation must have a smooth level surface. Maxsg low voltage switchgear general instructions read these instructions carefully before installation and use as a guide during installation and initial operation. Our experienced installation teams can design and deliver a project managed solution to meet clients requirements. Generally, a switchgear substation must provide a high level of safety so that both operator protection and faultfree network operation is.
From a definition point of view ax1 is a primary encapsulated and air insulated switchgear. An eaton 515 kv type vaccladw metalclad switchgear indoor housing assembly provides centralized control and protection of medium voltage power. If your site is at capacity and needing more power, power continuity can provide a new transformer and switchgear installation and give you the extra capacity you need. The gas is contained in segregated metal enclosures, which can be accessed to perform maintenance. Prior to installation, you need to create the right foundation for it.
Lets maintain your hv and mv equipment to keep it safe and protected. Ge entellisys low voltage switchgear installation and. Positioning of the cubicles should start near to the centre of the switchboard, installing as early as possible the enclosures associated with any. This means that all high voltage parts are housed in the encapsulated main circuit enclosure and are inaccessible from the outside. Observe national electrical codet nect, osha, and local procedures and standards. Be aware of the environmental ratings on the switchgear.
This pressure measurement is based on the proven magnetron discharge method. We can provide a complete installation service from hv switchgear and transformers to lv distribution circuits. A switchgear consists of a number of switchgear cubicles with connecting equipment and one or more support cubicles. After the output of the method, the sequence of execution of the program is returned to the place of call of said method. Once identified, these factors can be analysed so that protective measures can. Safe installation procedures for electrical switchgears. Seismic qualification for metal enclosed and solidinsulation enclosed switchgear and controlgear assemblies for rated voltages above 1. So, special care is to be taken during the designing of high voltage switchgear. Pix with a roll on floor circuit breaker design provides easy rackinrackout operation without the need for a. Download documents for sm624 modular switchboard up to 24 kv.
Instructions for installation, operation, and maintenance of 5. Ensure all civil works are completed for the area including floor paint to carryout the installation, and clearance is obtained from respective authorities to proceed further. The area to be verified for the civil work has been completed and switchgear installation works can commence. All packages shall be stored under protected dust area, till the equipment is shifted for installation. Magnum ds switchgear is designed to meet the changing needs of our customers by providing. In this situation the transformer develops a dangerous high voltage. Safety or risk analyses should highlight a sequence of events that will reveal possible risk factors. Method statement for hv switchgear installation the return statement is used to exit the execution sequence of the statements of a method and, optionally, return a value. It is a complete switchgear system, prepared and operations tested on delivery. It is recommended that floor channels be imbedded in the foundation to maintain a level surface.
Measure the floor where you want to install the switchgear with a tape measure and draw and outline of it. Remove the plastic cover and any strappings on the switch gear cubicle. Software used for thermodynamic studies of the building dedicated to for energy. Ensure the materials are stored properly and there is no mark of damage or. The severity level of earthquake zones must be specified as indicated in iects 62271210, high voltage switchgear and controlgear part 210. Reference drawings detailing the installation of cable support brackets and wiring. Introduction page 1 introduction switchgear and protection methods play a vital role in every high voltage system. Design and installation of medium voltage switchgear facts you. Mediumvoltage switchgear are further differentiated according to 3 opening types. The medium voltage switchgear ax1 is not just a medium voltage cubicle, but also a complete switchgear systeminstallation. While doing the hv test the steps to be followed are as below. The classification of metalenclosed switchgear is defined in the iec standard. Where single core pvc insulated wires are enclosed within the conduit and trunking, care will be taken that no damage will occur to the wires during their installation.
Check area is clean for the positioning of lifting crane and switchgear panels as per approved drawings. Sm624 documents and downloads schneider electric global. Voltage presence indicating system version 3 for mv cubicles compatible with. Primary ais mv switchgear withdrawable cb up to 17. Index termspartial discharge, switchgear, condition assessment, reliability, distribution networks 1. Switchgear installation during our electrical contracting we constantly battling to find specialist contractors to undertake switchgear installation and testing. Implementing safety best practices for mv equipment early in the installation cycle reduces the potential of future faults, equipment failure and a reduction on investment returns. For doing r phase the other phases are shorted and earthed. Highvoltage switchgear was invented at the end of the 19th century for operating motors and other electric machines. All installation shall be carried out according to the approved shop drawing. Medium voltage technical guide schneider electric documents. It can be used coupled on the left or right for distribution switchboards and with highvoltage switchgear type phdo. High voltage transmission switchgear often contains hundreds of kilograms kgs of sf 6.
Disconnect the sensor cable from the sensor cable connector. Prior to start the installation, refer to the approved shop drawings related to the area. Distribution commissioning test sheet hv ring main switchgear hpc4dl0700122014 this commissioning test sheet covers the checking, testing and commissioning of all replacement or new installations of high voltage hv ring main switchgear before energisation. Medium voltage switchgear schneider electric global. Checking vacuum switchgear each vacuum interrupter, sealed and airtight, is checked for the quality of the vacuum obtained. Operating process for access to high voltage apparatus.
Voids in insulating material generally form during the casting process of the insulator. Installation and low voltage switchgear maintenance manual. Testing distribution switchgear for partial discharge. At the factory the switchgear system may have been divided into groups to facilitate shipping. Abb used iriss windows during the testing held at the kema labs facility in shallfont, pa to ieee c37. An interlock in the the panel grants access when live parts are isolated and earthed. Route the power cables into the lower frame and secure them to the cable brackets with a cable clamp. Attach the power cables to the switch gear cubicle which is the unit that will be placed on top of the lower frame. Install a ground bus the full length of the switchgear assembly. Before attempting work either deenergize the circuit by opening the breaker or shortcircuit the secondary of the current transformer. Instructions for installation of metal clad switchgear. The power system deals with voltage above 36kv, is referred as high voltage switchgear. A detailed mounting and operation manual of the indoor air switchdisconnector nalnalfvr rated voltage 12, 17. Mark holes in locations on the wall that will be behind the.
The technology has been improved over time and can now be used with voltages up to 1,100 kv. After consultation with one of the uks largest independent switchgear manufacturers ten years ago we formed a division to carry out this specialist work on a permanent basis. Mediumvoltage switchgear with air, gas or shielded solid insulated technologies that helps you bring iot connectivity to any installation. Never install an infrared widow with a rating lower than that of the original enclosure. The switchgear system ax1 is system for the distribution of medium voltage in power and industrial installations. While this pane is useful for some inspection, it is not infrared transmissible, meaning you cannot use a thermalinfrared camera to inspect for overheating or other issues.
Guidelines for safe installation and maintenance of mv. High voltage test is done by applying 80% of factorytested voltage. For new work before the system or installation is accepted from the contractor. Design and installation of medium voltage switchgear. Abb safegear has been successfully arcresistant tested to a maximum of 50ka with iriss vpfr75 3inch infared windows installed on the rear doors of the switchgear. This procedure supports the power system safety rules and its requirements assembled under the operation of high voltage switchgear categories 5, 6 and 7. The connection of an electrical installation to a mv utility distribution network. At the installation site the groups must be rejoined to form the. Cts contractors meters, breakers size, bus bar sizes etc. As the voltage level is high the arcing produced during switching operation is also very high. Suitable crane with capacity to lift the panel shall be used for placing the panels at the place of installation after the base frame is ready. Most of the problems are ge nerated by high voltage and high current flowing though. Standard test procedure for ac high voltage power circuit breakers rated on a symmetrical current basis.
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