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GENERAL INSTRUCTIONS FOR  

CMS-17 

SWITCHING AND BREAKING SUBSTATION 

IG-178-GB 

  version 01 

11.08.2011 

 

1.1. INTERIOR SWITCHGEAR 

The electrical equipment of the 

CMS-17 

Switching and Breaking Substation is located inside 

and anchored to the enclosure and has the following types of configuration: 
 

a) 

Switching and Breaking Substation, 

made up of the following components: 

-  Switchgear unit formed by up to 4 MV feeder functions completely insulated in 

SF

6

, with an insulation voltage of 24 kV. 

 

b) 

Switching and Breaking Substation with Protection units

, made up of the following 

components: 

Switchgear unit formed by 2 MV feeder functions completely insulated in SF

6

, with 

up to two fuse protection units. 

 
 
The maximum single-wire diagrams available for the 

CMS-17

 Switching and Breaking 

Substation are shown below: 
 
 

 

 

 

 

 

 
 
 
 
 
 
 
 
 

Figure 1.2: CMS-17 substation 4L single-wire diagram

 

Figure 1.3: CMS-17 substation 2LP+P single-wire 
diagram

 

 

 

 
 
 
 

Summary of Contents for CMS-17

Page 1: ...B version 01 Secondary Distribution Switchgear Primary Distribution Switchgear Protection and Automation Distribution Transformers Transformer Substations Low Voltage Boards LIB 11 08 2011 CMS 17 SWIT...

Page 2: ...uation 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 which...

Page 3: ...ical Equipment 9 2 TRANSPORT 10 2 1 LIFTING METHODS 10 2 2 ACCESS 11 2 3 OVERLAND TRANSPORT 11 2 4 SEA TRANSPORT 12 2 5 DELIVERY CONDITIONS 12 3 INSTALLATION 13 3 1 LOCATION 13 3 2 PLANNING 13 3 3 EXC...

Page 4: ...been designed in accordance with standard EN 62271 202 to be used in public electrical distribution networks of up to 24 kV 1 Interior switchgear 1 1 MV switchgear CGMCOSMOS system 2 Prefabricated Con...

Page 5: ...owing components Switchgear unit formed by up to 4 MV feeder functions completely insulated in SF6 with an insulation voltage of 24 kV b Switching and Breaking Substation with Protection units made up...

Page 6: ...ch disconnector IEC 60265 1 Type Rotation category E3 Rated current A 400 630 Rated short time withstand current kA 16 eff 1 s Peak value kA 40 Short circuit making capacity kA 16 40 N of short circui...

Page 7: ...ng to the Switching and Breaking Substation Cable entry and exit holes four at the bottom of the enclosure with a diameter of 174 mm Additionally the substation also has 400 x 132 mm cable exit holes...

Page 8: ...nsions and weights of the CMS 17 Switching and Breaking Substation are given below 1 3 1 Concrete Enclosure Dimensions Total 2080 Height Visible mm 1600 Width mm 2170 Depth mm 1310 Figure 1 5 Enclosur...

Page 9: ...ion 01 11 08 2011 1 3 2 Electrical equipment Dimensions 4L 2L2P Height mm 1300 Width mm 1460 4 x 365 mm 1670 2 x 365 mm 2 x 470 mm Depth mm 735 Weight 4L 2L2P Weight kg 344 4 x 86 kg 430 2 x 86 kg 2 x...

Page 10: ...Switching and Breaking Substation has 4 DEHA type inserts 6000 2 0170 which enable it to be handled using the proper lifting beam slings and hooks in order to guarantee a hoisting as balanced as poss...

Page 11: ...s etc 2 3 OVERLAND TRANSPORT Transportation should be carried out using a truck The CMS 17 Switching and Breaking Substation electrical equipment is supplied screwed onto the rails located on the floo...

Page 12: ...tainer attach a 100 x 100 x 10 mm and 100 mm long square to each corner of the building They must be welded to the floor of the container in order to avoid any movement during transportation Lastly pl...

Page 13: ...ect that could impede or obstruct the smooth operation of the installation must be indicated posts cables ditches walls pipelines etc marking their positions on the drawing with the corresponding meas...

Page 14: ...inside As a general rule maintain a 3000 mm area around the excavation free of materials and vehicle traffic In the case of rain and puddles carefully inspect the excavation using qualified technician...

Page 15: ...ith the external earthing network 3 5 EARTH CONNECTION The CMS 17 Switching and Breaking Substation has an internal earthing circuit to facilitate the connection of the different elements to the earth...

Page 16: ...The copper braid cross section the terminations contact surface and the tightening torques must be suitable for a fault current delimited by network protections It is recommended an external protectiv...

Page 17: ...level 0 even underneath the enclosure itself To open a hole simply knock it inwards with a hammer Then clean the pieces of concrete from inside the enclosure The MV cables must meet the minimum radius...

Page 18: ...are specified in Ormazabal s IG 078 General Instructions document which is supplied with the CMS 17 5 MAINTENANCE The requirements set out in the applicable legislation on Transformer Substations to...

Page 19: ...ng them at 90 and 180 To unlock the system pull upward on the rod a and open the corresponding door b Disconnect the power to the Electrical Equipment switching the MV switchgear unit to the earthing...

Page 20: ...ve the cover and place it on top of wooden planks a Figure 5 4 Hoisting Eyebolts Figure 5 5 Positioning on the planks f Open the MV switchgear cable compartment lid 4 Disconnect the power cables and t...

Page 21: ...the right cubicle h Unscrew the MV switchgear fixing points a on the rails that are arranged over the base of the Switching and Breaking Substation i Extract the electrical equipment To do this the us...

Page 22: ...Connect the electrical equipment s earth connection to the MV switchgear earthing bar n Re connect the MV cables that supply power to the MV switchgear o Re attach the removable cover p Once the cove...

Page 23: ...sent with the concrete enclosure First aid sign Electrical warning sign Lever for actuating the MV switchgear CMS 17 Switching and Breaking Substation General Instructions IG 178 CGMCOSMOS Cubicle Sy...

Page 24: ...Page 24 of 20 TECHNICAL COMMERCIAL DEPARTMENT www ormazabal com...

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