Ormazabal velatia transforma.earth General Instructions Manual Download Page 5

5

Transport and handling

General instructions

transforma

.earth

IG-286-EN version 01

2

TRANSPORT AND HANDLING

To facilitate its transport, each earthing transformer has 
bracing elements on the four upper corners of the tank for its 
transport, to avoid the refrigeration elements from being 
damaged.

Earthing transformer can be transported and handled using a 
forklift, crane, or wheels.

2.1

Forklift transport

For transporting the earthing transformer by forklift, it should 
be mounted on a special pallet suitable for its mass and 
dimensions, as well as appropriately anchored to it, protecting 
the refrigeration elements against possible damage caused by 
the forklift support.

Fig. 2.1:

Detail of forklift transport

2.2

Crane transport

For transporting the earthing transformer by crane, take into 
consideration that the tank allows total suspension of the 
same, by means of the built-in lifting eye bolts. Complete 
suspension of the earthing transformer should be performed 
taking the following specifications into consideration:

Slings on the eye bolts should form an angle greater 
than or equal to 60º to the horizon of the earthing 
transformer.

Slings should not rub nor damage the bushings or any 
other of the earthing transformer accessories.

Fig. 2.2:

Detail of crane lifting

CAUTION

Risk of machine breakage

In order to determine the appropriate lifting method for the 
earthing transformer, the total weight must be taken into 
consideration, which is indicated on its rating plate.

DANGER

Risk of death by crushing and from damage to the 
earthing transformer or to the installation

Use the eye bolts on the cover of the earthing transformer to lift it 
by crane, keeping it in a horizontal position at all times.

If the weight of the earthing transformer requires that the lifting 
eye hooks be located on the tank, they will be properly identified 
with a different color.

To avoid damage to the elements located on the earthing 
transformer’s cover, use suitable hooks to obtain a perfectly 
vertical lifting.

Never

 use the earthing transformer refrigeration elements, such 

as the fins and radiators, as lifting elements for the same. 

Risk

 of 

severe damage to people and the machine.

Summary of Contents for velatia transforma.earth

Page 1: ...transforma earth General instructions IG 286 EN version 01 11 07 2019 Three Phase earthing transformers up to 36 kV LIB...

Page 2: ...e situation according to current legislation The above must be carefully observed as the correct and safe operation of this equipment depends not only on its design but also on general circumstances w...

Page 3: ...6 Transporters 7 2 7 Route selection for road transport 7 2 8 Checking the impact recorders 7 2 9 Responsibility 7 3 Storage 8 4 Installation 9 4 1 Reception of the earthing transformer 9 4 2 Installi...

Page 4: ...mponents 1 1 1 Standard or routine testing Earthing transformers are subjected to routine testing that guarantees compliance with the following standards Measurement of winding resistance IEC 60076 1...

Page 5: ...ing specifications into consideration Slings on the eye bolts should form an angle greater than or equal to 60 to the horizon of the earthing transformer Slings should not rub nor damage the bushings...

Page 6: ...uch size and weight 2 5 Preparing the load for transport The transformer should be attached by means of slings chains and other elements suitable for the mass stated on the transformer s name plate Fo...

Page 7: ...olent transport events 2 7 Route selection for road transport Route selection for road transport must be done so that the road selected is the one that demonstrates the best conditions for transportin...

Page 8: ...ut into service immediately the following recommendations should be followed Store the earthing transformer in a clean and dry place If the earthing transformer is equipped with plug in terminals make...

Page 9: ...if they are damaged immediately notify the shipper or Ormazabal The earthing transformer seals should be intact and should not have been tampered with IG168 005 Fig 4 1 Detail of the earthing transfo...

Page 10: ...terminal 12 mm for M10 Use a 40 60 Nm tightening torque for M12 25 35 Nm for M10 Fig 4 2 Detail of the transforma earth earthing connection DANGER Risk of death due to electrocution and irreversible d...

Page 11: ...e on the earthing transformer bushings with sufficient gauge to avoid excessive heating and at the same time allow for the possibility of expansion due to heating so the machine is not damaged 10 The...

Page 12: ...djustment DANGER In the event the earthing transformer is supplied with current transformers check that they are connected to the medium voltage circuits or that they are short circuited Never put an...

Page 13: ...erational power being careful that the earthing transformer s temperature does not surpass a value of 105 C 2 Adjust the electrical voltage on the earthing transformer using the corresponding tap chan...

Page 14: ...ollowing aspects Tightness check that there are no dielectric fluid leaks Cleaning check for proper cleaning and maintenance Noises check that there are no anomalous or abnormal noises Measurement too...

Page 15: ...tion resistance 1 time per year When a change is detected in the results after years of using the transformer or from comparing data from previous tests 7 Measuring the equipment s tan 1 time every 3...

Page 16: ...ansformer requires its repair or modification said operations must be performed by Ormazabal If the repair or modification is performed by a company other than Ormazabal the repairer must incorporate...

Page 17: ...nstallation for the protection of those who work around it either regularly or incidentally and that all external personnel avoid proximity to it during its operation 7 2 Business registration certifi...

Page 18: ...loss of dielectric fluid Tab 8 1 Recommended tightening torques Nm Metric Size M10 Low voltage LV Connection between nuts 15 20 70 100 250 350 25 35 40 60 85 95 25 35 40 70 100 150 Low voltage through...

Page 19: ......

Page 20: ...Subject to changes without prior notice For more information contact Ormazabal Ormazabal Cotradis Transformadores LOECHES Spain www ormazabal com...

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