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Ormazabal CTC, Общее руководство по инструкции

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Page 10 of 20 

GENERAL INSTRUCTIONS FOR CTC 

UNDER POLE COMPACT 

TRANSFORMER SUBSTATION  

 

IG-086-GB 

version 02

11.07.2007

 

3.4.  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. 

 

These levels will be adapted to the earth network solution taken for each case, according to 
the earth connection guide plan

[3]

. 

 

 

 
 
 
 
 
 
 

                                                 

[3]

 Necessary excavation for the recommended earthing ring: see Figure 3.9. 

ORMAZABAL

LECHO DE ARENA COMPACTADA DE

1770

2550

480

100 mm compacted sand 

Dimensions in millimeters

Figure 3.3

: 

Dimensions of the excavation

 

2550

1770

 

480

 

Содержание CTC

Страница 1: ...TRANSFORMER SUBSTATION General Instructions LIB 11 07 2007 Secondary Distribution Switchgear Primary Distribution Switchgear Protection and Automation Distribution Transformers IG 086 GB version 02 T...

Страница 2: ...ccording to current legislation This must be carefully taken into account because the safe and proper operation of this equipment depends not only on its design but on circumstances which are generall...

Страница 3: ...3 2 PLANNING 9 3 3 HANDLING 9 3 4 DIMENSIONS OF THE EXCAVATION 10 3 5 LEVELLING PROCESS 11 3 6 PROTECTION AND EARTHING CIRCUIT 12 3 6 1 Protection Earth Connection 12 3 6 2 Service Earth Connection 12...

Страница 4: ...3 Low Voltage Board LVB 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 wit...

Страница 5: ...nsformer access doors for air intake exhaust allowing optimal ventilation They are provided with a mosquito netting of 6 mm maximum mesh Two cable access areas one for MV cable incoming with dimension...

Страница 6: ...ons and weights of the CTC Transformer Substation are as follows Total 2080 Height mm View 1600 Length mm 1330 Depth mm 2170 Without Transformer 2000 Enclosure With Transformer 4600 Weight kg Cover 50...

Страница 7: ...the truck s platform to the CTC TS base must be at least 80 mm 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 palle...

Страница 8: ...rotected with elastic plastic tape wound around several times in order to avoid water filtering in the enclosure during transport Two boards of 2000 x 150 x 20 mm will be used to rest the CTC Transfor...

Страница 9: ...he 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 For the transversal balancing a lifting beam...

Страница 10: ...s must not be exceeded The maximum burying height is 480 mm measured from the base of the Transformer Substation These levels will be adapted to the earth network solution taken for each case accordin...

Страница 11: ...velled 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 earth...

Страница 12: ...ed to the protection earthing circuit metallic parts which is finally connected to the protection disconnection box 3 6 2 Service Earth Connection The service earthing circuit zero sequence earth conn...

Страница 13: ...er of the facilities shall implement at least one of the additional safety measures provided in this instruction in order to reduce the risks to persons and assets The recommended tightening torque fo...

Страница 14: ...ver with four chains of the same length 3 Place the cover on the floor on two boards 4 Put the transformer into the CTC TS with the tow truck 5 Place the cover on the CTC TS and connect the earth cabl...

Страница 15: ...he steps below 1 Open the door of the CBT TS compartment and put it in its fixed position 2 Install signals on the working area 3 Activate the locking of the door grille of the transformer compartment...

Страница 16: ...losure under the access door to the LVB To open a hole just hit it with a hammer 3 8 1 Connection of the MV Cables to the Transformer If the transformer is fitted with 24 kV plug in bushings it is rec...

Страница 17: ...per DIN 46 235 The connection is made directly on the busbar with M10 screws 4 3 8 3 Connection of the Cables to the LVB Outgoing The LV cable outgoings are made with the LVB s BTVC bases screws 4 To...

Страница 18: ...oor on two boards 8 Open the LVB compartment door see figure 3 8 9 Earth the circuit 10 Activate the locking of the door grille of the transformer compartment 11 Open the transformer compartment doors...

Страница 19: ...lly it might be advisable to check and grease the locks There should be no obstacles signs plants etc on the ventilation grilles of the prefabricated enclosure 5 ADDITIONAL INFORMATION 5 1 ACCESSORIES...

Страница 20: ...Hoja 20 de 20 TECHNICAL COMMERCIAL DEPARTMENT www ormazabal com...

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