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Summary of Contents for LEGRAND LE06499AE
- Page 1 Cast Resin Transformers Installation, use and maintenance manual 05/21-01 PC LE06499AE...
- Page 3 This guide does not cover all the details or possible variations of the entire series of connections, installation and possible operations. For further information or to solve specific problems that are not included in this guide, contact Legrand. THIS ENTIRE DOCUMENT BEFORE YOU COMMENCE THE INSTALLATION.
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Page 4: Safety Guidelines
Do not open, disassemble, alter or modify the transformer with the exception of special indications reported in the Installation Manual. All Legrand products must be opened and repaired only by personnel trained and authorized by Legrand. Legrand is not responsible for any non-authorized opening or repair. - Page 5 Cast Resin Transformers Low Voltage Terminal (LV) Lifting eye bolt Magnetic core Rating plate High Voltage (HV) winding Horizontal movement hooking points Connection earthing Trolley with swivel rollers Voltage switch 10. Delta connection 11. High Voltage Terminals 12. Temperature probe 13.
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Page 6: Reference Standards
2. Reference standards IEC 60076-11 – Power transformers – Part. 11: Dry-type transformer. IEC 60076-1 – Power transformers – Part 1: General. IEC 60076-2 – Power transformers – Part. 2: Temperature rise. IEC 60076-3 – Power transformers – Part 3: Insulation levels, dielectric tests and external clearances in air. IEC 60076-5 –... - Page 7 It has to be verified that each transformer is provided with contractual accessories such as rollers, temperature sensors, control thermometer, etc. … Any non-conformity must be recorded on the delivery note and notified to the forwarding agent or to Legrand.
- Page 8 Lifting the transformer Use all 4 eye bolts during lifting. Do not allow that the angle between the ropes to exceed 60°. The attachment point must be at least equal to the distance between the eyebolts. Gradually increase the tension on the lifting cables to avoid sudden shock or stress to the transformer. If the transformer has a protective enclosure, remove the centre panel of the roof to allow the eyebolts to be attached.
- Page 9 Cast Resin Transformers Lift the transformer avoiding improper lifting (that may cause it to tip over): be careful about the high centre of gravity of the transformer. It is forbidden to lift the transformer by inserting the forks of the forklift under the upper yoke of the core.
- Page 11 Cast Resin Transformers Moving the transformer The transformer (with or without enclosure) must be moved using the track or lower jokes where the proper holes are lo- cated. Do not move the transformers by applying force on the windings or on their connections. Avoid moving the transformer on sloping surfa- ces.
- Page 12 Storing the transformer If the transformer is not installed immediately, it has to be pro- tected against water, dust, humidity and sunlight even if provi- ded with enclosure. In case of storage the packaging supplied with the transformer must not be removed. If the transformer has been lifted using eyebolts, restore the in- tegrity of the packaging with adhesive tape.
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Page 13: Installation
Cast Resin Transformers 5. Installation During the operations for the connection and installation, always protect the windings to avoid external parts such as bolts, washers, cable parts, etc. following into the windings and jeopardizing the insulation capability of the transformer. Dry type cast resin transformers are designed for indoor installations, in a site protected from direct sunlight, in clean and dry environments, without risk of water intrusion. - Page 14 5.1.2 Installation without protection enclosure/box (IP00) Between HV and LV connections and transformers’ windings and delta connections, the minimum distances shown in the table must be respected. HV and LV cables must always be supported to avoid mechani- cal stress on the terminals. D (mm) ≤...
- Page 15 Cast Resin Transformers 5.1.3 Examples of wrong installation High voltage connection cables must not be laid inside the triangle connection and must not touch it. The connection cables must not touch the windings, or any other active parts of the transformer. Example 1 Example 2...
- Page 16 Connections on the Low Voltage side - LV LV terminals are positioned on the upper part of the transformer and they are in aluminium as standard. We recommend to make the cable connection with tinned-copper cable terminals, connecting one or two cables in each hole. Cupal In the case of connections with busbar it is necessary to use flexible connections to mechanically isolate the transformer from busbars.
- Page 17 Cast Resin Transformers Tightening torque for electrical and mechanical connections Tighten screws and bolts of electrical and mechanical connections in accordance with the values reported in the table: it is recommended to re-test after a few hours of operation to eliminate the effects of any adjustments. During the operations of clamping always use two wrenches to prevent distortion or damage.
- Page 18 Ventilation The transformer during its operation generates losses due to the passage of current through the windings and the effect on the core of the magnetizing current. The losses, the values of which are shown on the test report, are transformed into heat that must be dissipated from the room in which the transformer is installed to comply with the conditions of normal use and prevent over-temperature limits being exceeded.
- Page 19 Cast Resin Transformers Temperature monitoring systems In standard execution the transformers are equipped with Pt100 temperature probes, realized in accordance with the IEC 60751 Standards. Other temperature sensors can be supplied on request, such as PTC sensors according to DIN 44081. Connection diagrams of the terminal blocks in the probe connection box.
- Page 20 6. Commissioning Legrand is not responsible for the installation of the transformer. Before energising the transformer, carry out the following checks and what indicated in the following paragraphs. These activities are listed in Chapter 7. Verify the mutual position of the windings which must be according to our drawings. Verify that the compression bolts are centred on the spacers.
- Page 21 Cast Resin Transformers Tappings for voltage setting on HV windings The variation of the nominal HV supplied by the electrical authority can be compensated by the tappings setting in order to keep the nominal LV required and detailed on the rating plate. The voltage setting is made by changing the position of the adjustment busbars on the tappings.
- Page 22 Cleaning If the transformer has been stored for a long period, clean carefully LV and HV windings from dust, dirt and possible condensation. Clean the HV and LV windings from dust deposits, dirt and condensation. Use a vacuum cleaner to avoid dispersion of dirt and dust on the transformer.
- Page 23 Cast Resin Transformers 7. Reception, installation and initial energising of the transformer Below are the checks to be carried out before putting the transformer into operation for the first time, in accordance with the instructions in this installation manual. TRANSFORMER SERIAL NUMBER: Installation site: Manual Check...
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Page 24: Maintenance
In normal operating conditions cast resin transformers do not require specific maintenance except for that indicated in the following table. All the operations performed must be recorded in order to be shown to Legrand in case of necessity. Take advantage of any stops to perform checks even before they are due. - Page 25 -130 47,999 47,587 47,175 46,763 46,350 45,937 45,524 45,111 44,697 44,283 -120 52,106 51,696 51,286 50,876 50,466 50,055 49,645 49,234 48,822 48,411 -110 56,190 55,783 55,375 54,967 54,559 54,151 53,742 53,333 52,924 52,515 -100 60,254 59,849 59,443 59,037 58,631 58,225 57,818 57,412 57,005...
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Page 26: Guide For Trouble-Shooting
Guide for trouble-shooting Pos. Problem Possible reason Corrective action Check the position of the Load is not distributed uniformly connection on the tappings Replace the faulty piece. Check the connections between the Overtemperature of a single winding Faulty temperature sensors or probe box and the control units temperature control device / possible presence of false... -
Page 27: Additional Information
Cast Resin Transformers 9. Additional information Exploded diagram of a cast resin transformer 11. Bi-directional wheels Lifting eyes 12. HV delta connection Upper core clamp Upper spacer 13. Core lifting rods 14. LV terminals HV windings 15. HV terminals Magnetic core LV windings 16. -
Page 28: Environmental Aspects
500 a 1100 da 1300 a 2700 from 2000 kVA to 3150 kVA da 1100 a 1700 da 2700 a 6000 For its High Efficiency Green Transformers Legrand makes PEP (Product Environmental Profile) certificates available to offer customers environmentally friendly solutions. - Page 29 Cast Resin Transformers...
- Page 31 Cast Resin Transformers...
- Page 32 : 33 5 55 06 87 87 Fax : 33 5 55 06 74 55 www.legrand.com Installer stamp Legrand reserves at any time the right to modify the contents of this booklet and to communicate in any form and modality, the changes brought to the same.
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