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- Page 1 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions GEAFOL- / CARECO- Cast-resin Transformer Operating Instructions siemens-energy.com Siemens Energy is a trademark licensed by Siemens AG. © 2021 Siemens Energy Page 1 Edition 09/2021...
- Page 2 Copyright: The copyright to these operating instructions is held by Siemens Energy AG. These operating instructions must not be wholly or partly reproduced for competitive purposes, used in any unau- thorized way or made available to third parties without agreement of Siemens Energy AG siemens-energy.com ©...
- Page 3 Siemens Energy products may only be used for the safety alert symbol. These notices shown below are graded applications described in the catalog and in the relevant according to the degree of danger.
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Page 4: General Information And Safety Notes
Note The transformers have been built based on state-of-the-art Siemens Energy AG does not accept any liability for technology and are shipped in an operationally reliable damage and failures that result from the non-ob- condition. Changes made by users could affect this servance of these operating instructions. -
Page 5: The Five Safety Rules
Replace damaged bolts with new bolts of the same type and 3. Verify absence of operating voltage strength class. Siemens Energy AG accepts the warranty only for original 4. Ground and short circuit spare parts. 5. Cover or safeguard neighboring live parts... -
Page 6: Particular Types Of Hazards
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Particular types of hazards Occupational safety and protective equipment DANGER! Read operating instructions High Voltage! Do not approach the transformer or re- move protective covers until the trans- former is de-energized. Wear protecting gloves... -
Page 7: Corrosion Protection
IEC 60076-11 seconds. Operating conditions The requirements at the installation site according to IEC GEAFOL-/CARECO transformers fulfil the classes defined in 60076-11, chap. 4.2 must be observed, in particular with EC 60076-11: regard to grounding of transformers Environmental class ... - Page 8 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Description Low-voltage terminals Lifting lugs Lashing lugs High-voltage terminals Delta connection Grounding screw Lower core frame Wheels, can be turned 90° Pulling lugs 10 High-voltage tappings 11 (these may also be on the low-...
- Page 9 Transport, goods receipt, storage Unloading, lifting by crane GEAFOL/CARECO transformers must be lifted by the lifting lugs provided on the upper core frames (Fig. 5.1). The transformer must be lifted and transported with four indi- Fig. 5-1: lifting lugs for crane hook with vidual chain strands in the correct angle.
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Page 10: Moving, Placement
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Unloading and lifting with forklift truck When using a forklift truck, insert the forks into the trans- port bridges of the transformer. NOTICE! If signs prohibiting transport by forklift are at- tached near the bottom of the transformer, trans- port of the transformer by forklift is absolutely prohibited!. - Page 11 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Covers on high-voltage tappings and tubes of delta connection Transformers for specific applications may have covers on the high voltage tappings and the tubes of the delta con- nection (See Figure 5.8) These covers are essential parts of the insulation system.
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Page 12: Minimum Clearances
[mm] [mm] [mm] per hour and for each kW of heat loss is the recommended value; more information can be found in the GEAFOL Planning Guidelines. Minimum clearances 5.10 Make sure that the clearances from the surface of the cast-... - Page 13 Make sure that the ventilation ducts are not covered. If the supply air is heavily polluted, it must be filtered. Fig. 5-12: Minimum clearances around GEAFOL cast-resin transformers with bare tappings and delta connection Make sure that there is no condensation above the trans- tubes former that steadily drips into the transformer.
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Page 14: Connection Routing
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Connecting CAUTION! Do not climb on connecting tubes of the transformer at connecting! CAUTION! Metallic objects in the coils can destroy the transformer! The coils must be covered during connection. Connection routing Cast resin transformers allow many connection combina- tions, both from above and below. -
Page 15: Contact Pressure
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions If the transformer is installed indoors in a room where con- densation is expected, or where corrosive gases are pre- sent, and if the transformer will be connected to copper busbars, an aluminum sheet that is copper plated on one side (the product known by the trade name “Cupal”, for ex-... -
Page 16: Temperature Monitoring
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Grounding of transformers Make sure that the necessary grounding connection is in- stalled on accessories that are conected to the transformer after installation. Transformer housings must also be grounded in accordance with the known grounding specifi- cations. - Page 17 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Siemens Sensformer® 6.10 (Option) The Sensformer is used for digital transmission of the measurement data in real time. By means of an app, an overview of the status of the individual transformers be- comes possible. Likewise, a push message can be sent in the event of an error message.
- Page 18 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Modification of high voltage 6.13 tappings By changing the position of the connecting brackets at the high-voltage coils, the voltage of the transformer can be changed according to the rating plate (Fig 6.11) The numbering of the taps is explained on a label on the upper core frame of the transformer (Fig.
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Page 19: Inspection And Cleaning
Dust deposits lead to ence on operating safety; it is not a defect. Due to the low higher operating temperatures. attenuation, it may take the switch-on currents of GEAFOL cast-resin transformers some time to decay. Refer to the NOTICE! test report for the exact values. - Page 20 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Overview inspection activities Remedy Time interval (rec- Description of the activity ommendation) Visual check 1x per year Check for soiling, damage, soot deposits, infestation by animals Checking that the current-carrying connections are free of corrosion...
- Page 21 PTC resistor 120° (Fan on) 4102642197 In the event of faults that cannot be rectified by the cus- tomer himself, a service center of Siemens AG must be informed. PTC resistor 140° (Warning winding) 4102642213 Please state the factory number when making enquiries.
- Page 22 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Potential faults Faults Potential causes Test steps / Remedy Transformer too hot, Permanent overload Check load / load distribution, Warning / alarm message reduce load if necessary from the temperature sensors of coils Screw connections on live parts...
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Page 23: Recycling And Disposal
GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions Recycling and disposal Relevant standards GEAFOL/CARECO- transformers have advantages at the end of their life cycle: Without risk to the environment, 94 per- Heading cent of the material can be recycled. Protecting the environment and conserving its resources IEC 60076-11 Power transformers are high priority corporate goals for us. - Page 24 GEAFOL- / CARECO-Cast-resin Transformer/ Operating Instructions EC declaration of conformity © 2021 Siemens Energy Page 24...
- Page 25 The requested performance features are binding only when they are expressly agreed upon in the concluded contract. All prod- uct designations may be trademarks or product names of Siemens Energy Global GmbH & Co. KG or other companies whose use by third parties for their own purposes could violate the rights of the owners.