Velatia Ormazabal transforma.plur, General Instructions Manual

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IG-287-EN version 03; 24/07/2020
3
General Instructions
transforma
.plur: Transformers with corrugated tank
and submerged in dielectric liquid from 3150 kVA
Contents
Contents
1. Description and main characteristics .......................4
1.1. Design, manufacturing and testing . . . . . . . . . . .4
1.2. Individual or routine tests . . . . . . . . . . . . . . . . . . . .4
1.3. Test protocol. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
2. Lifting, moving and handling ...................................5
2.1. Lifting and moving by crane . . . . . . . . . . . . . . . . .5
3. Transport ..................................................................11
3.1. Preparing the load for transport . . . . . . . . . . . . .11
3.2. Transport agents. . . . . . . . . . . . . . . . . . . . . . . . . . . .13
3.3. Selecting the route for road transport . . . . . . .13
3.4. Checking impact detectors. . . . . . . . . . . . . . . . . .13
3.5. Liability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4. Storage ......................................................................14
5. Installation ...............................................................15
5.1. Receiving the transformer . . . . . . . . . . . . . . . . . . .15
5.2. Transformer site. . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5.3. Transformer electrical connections . . . . . . . . . .16
5.3.1. Standard procedure. . . . . . . . . . . . . . . . . . . . . . . . .16
5.3.2. Special transformers with electrostatic screen
between primary and secondary . . . . . . . . . . . .18
6. Start up .....................................................................19
6.1. Transformer check before commissioning. . . .19
7. Maintenance .............................................................21
7.1. Access for maintenance operations . . . . . . . . . .21
7.2. Transformer check . . . . . . . . . . . . . . . . . . . . . . . . . .21
7.2.1. Transformer temperature. . . . . . . . . . . . . . . . . . . .21
7.2.2. Oil volume inspection. . . . . . . . . . . . . . . . . . . . . . .21
7.2.3. Noise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.2.4. Tightening screws and threaded pieces. . . . . .22
7.2.5. Oil leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.2.6. Paint. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
7.3. Regularity of maintenance . . . . . . . . . . . . . . . . . .24
7.4. Repairs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
8. Additional information ............................................26
8.1. Reliability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
8.2. Company registration certificate. . . . . . . . . . . . .26
9. Final annex ...............................................................27
9.1. Tightening torques. . . . . . . . . . . . . . . . . . . . . . . . . .27