Ormazabal CTC General Instructions Manual
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Ormazabal CTC General Instructions Manual

Ormazabal CTC General Instructions Manual

Under pole compact transformer substation
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General Instructions
IG-086-GB
version 02
CTC
UNDER POLE COMPACT
TRANSFORMER SUBSTATION
LIB
11.07.2007
Transformer
Primary Distribution
Secondary Distribution
Protection and
Distribution
Substations
Switchgear
Switchgear
Automation
Transformers

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Summary of Contents for Ormazabal CTC

  • Page 1 General Instructions IG-086-GB version 02 UNDER POLE COMPACT TRANSFORMER SUBSTATION 11.07.2007 Transformer Primary Distribution Secondary Distribution Protection and Distribution Substations Switchgear Switchgear Automation Transformers...
  • Page 2 As a result of the continuous evolution of standards and new designs, the characteristics of elements included in this specification are subject to change without prior notice. These characteristics, as well as material availability, are only valid if confirmed by Ormazabal’s Technical and Commercial Department.

  • Page 3: Table Of Contents

    IG-086-GB GENERAL INSTRUCTIONS FOR CTC version 02 UNDER POLE COMPACT TRANSFORMER SUBSTATION 11.07.2007 INDEX OVERVIEW AND MAIN CHARACTERISTICS..............4 1.1. PREFABRICATED ENCLOSURE ................5 1.2. TRANSFORMER....................... 5 1.3. LOW VOLTAGE BOARD................... 5 1.4. MECHANICAL CHARACTERISTICS ................ 6 TRANSPORT ........................7 2.1.

  • Page 4: Overview And Main Characteristics

    11.07.2007 1. OVERVIEW AND MAIN CHARACTERISTICS Ormazabal’s CTC is an Under Pole Compact Transformer Substation designed to be installed on the surface, with outdoor operation, complying with the UNE-EN 61330 standard. It can be used in electrical distribution public networks up to 36 kV and can house a transformer up to 250 kVA.

  • Page 5: Prefabricated Enclosure

    Two cable access areas, one for MV cable incoming, with dimensions of 400 x 190 mm, at the CTC TS back bottom and another one for LV cable outgoing, with dimensions of 440 x 190 mm, at the front bottom.

  • Page 6: Mechanical Characteristics

    GENERAL INSTRUCTIONS FOR CTC IG-086-GB UNDER POLE COMPACT version 02 TRANSFORMER SUBSTATION 11.07.2007 1.4. MECHANICAL CHARACTERISTICS The dimensions and weights of the CTC Transformer Substation are as follows: Total 2080 Height [mm] View 1600 Length [mm] 1330 Depth [mm] 2170...

  • Page 7: Transport

    The enclosures are loaded in such way that the door on the short side faces the truck’s cab. Once the CTC TS has been placed on the pallets, it will be fixed to the truck’s platform with slings (never with cables).

  • Page 8: Sea Transport

    Two boards of 2000 x 150 x 20 mm will be used to rest the CTC Transformer Substation in the container. Once positioned inside the container, a 100 mm long 100 x 100 x 10 mm bracket will be placed on each corner of the enclosure, welded to the floor of the container in order to prevent any movement during transportation.

  • Page 9: Installation

    Transformer Substation needs to be planned. 3.3. HANDLING For a correct handling, the CTC TS is provided with DEHA hooks that used with a lifting beam, slings and adequate hooks ensure that the lifting operation is as balanced as possible.

  • Page 10: Dimensions Of The Excavation

    It is recommended to make an excavation for the installation, as shown in Figure 3.3. The burying level marked on the CTC TS walls must not be exceeded. The maximum burying height is 480 mm measured from the base of the Transformer Substation.

  • Page 11: Levelling Process

    It is necessary to cover the base of the pit with a 100 mm thick layer of compacted and levelled sand to avoid an uneven base. The installation operation involves positioning the CTC TS in the excavation made for this purpose and connecting the LV and MV cables, as well as the external earthing circuit.

  • Page 12: Protection And Earthing Circuit

    TRANSFORMER SUBSTATION 11.07.2007 3.6. PROTECTION AND EARTHING CIRCUIT The CTC TS is provided with an internal earthing circuit to connect the different elements to the external earthing circuit. Inside the enclosure, there are two earth disconnection boxes corresponding to: •...
  • Page 13 IG-086-GB GENERAL INSTRUCTIONS FOR CTC version 02 UNDER POLE COMPACT TRANSFORMER SUBSTATION 11.07.2007 The copper connector cross-section, the contact surface of terminals and tightening torques shall be suitable for a default current delimited by Network protections. In the cases when it is not feasible to maintain the values of step and touch voltages within the limits specified in Supplementary Technical Instruction MIE-RAT 13 of the Transformer Substations Regulations (R.D.

  • Page 14: Positioning Of The Transformer

    Figure 3.6: Removing the cover Put the transformer into the CTC TS with the tow-truck. Place the cover on the CTC TS and connect the earth cable that connects the cover with the enclosure. Remove the eyebolts and place ORMAZABAL the plugs on the tips.
  • Page 15 IG-086-GB GENERAL INSTRUCTIONS FOR CTC version 02 UNDER POLE COMPACT TRANSFORMER SUBSTATION 11.07.2007 To access the transformer, follow the steps below: Open door compartment and put it in its fixed position. Install signals on the working area. Activate the locking of the door-grille of the transformer compartment.

  • Page 16: Access To Mv And Lv Cables

    3.8. ACCESS TO MV AND LV CABLES The CTC TS is provided with one MV cable incoming hole, with dimensions of 400 x 190 mm, at the rear of the enclosure, on the opposite side of the access door to the LVB.

  • Page 17: Connection Between The Transformer And The Lvb

    IG-086-GB GENERAL INSTRUCTIONS FOR CTC version 02 UNDER POLE COMPACT TRANSFORMER SUBSTATION 11.07.2007 If the transformer is fitted with open porcelain bushings, as per the standard UNE-EN 50180, it is recommended to make the connection to the M12 bolt of the bushing with the connecting points.

  • Page 18: Electrical Equipment Replacement

    Place the new transformer in the CTC TS with the tow-truck. Connect all bridges (see chapters 3.8.1, 3.8.2 and 3.8.3). Place the cover on the CTC TS and connect the earth cable that connects the cover with the enclosure. Remove the eyebolts and place the plugs on the tips.

  • Page 19: Maintenance

    5. ADDITIONAL INFORMATION 5.1. ACCESSORIES INCLUDED IN THE SUPPLY First aid sign. Electrical warning plate. Document holder with the information specific to the CTC TS. Insulated key to operate the LVB disconnector. Eyebolts to lifth the cover. Page 19 of 20...
  • Page 20 TECHNICAL – COMMERCIAL DEPARTMENT: www.ormazabal.com Hoja 20 de 20...

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