Ormazabal cgm.3 Series General Instructions Manual
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Ormazabal cgm.3 Series General Instructions Manual

Medium voltage sf6 gas-insulated cubicles up to 38 kv according to ieee and csa standards
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cgm.3 system
medium voltage SF
6
gas-insulated cubicles up to 38 kV
according to IEEE and CSA standards
General instructions
IG-183-EN, version 06, 31/03/2020
LIB

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Summary of Contents for Ormazabal cgm.3 Series

  • Page 1 cgm.3 system medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards General instructions IG-183-EN, version 06, 31/03/2020...
  • Page 2 Therefore, the use of this equipment poses electrical, mechanical and thermal risks. In order to ensure an acceptable level of protection for people and property, and in compliance with applicable environmental recommendations, Ormazabal designs and manufactures its products according to the principle of integrated safety, based on the following criteria: •...

  • Page 3: Table Of Contents

    General instructions Contents cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Contents 1. Description and main characteristics .......5 cgm.3-s cubicle ......45 5.4.
  • Page 4 Contents General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 7. Maintenance .............77 7.1. Voltage presence indicator test ....77 7.2.

  • Page 5: Description And Main Characteristics

    General instructions Description and main characteristics cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Description and main characteristics The cgm.3 system is made up of a range of fully insulated The cgm.3 system comprises the following functional units: modular SF cubicles, which allow the configuration of Models...

  • Page 6: Cubicle Elements

    Description and main characteristics General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 1.1. Cubicle elements 1. Gas tank: Sealed compartment which houses the Each cubicle is made up of a series of independent compartments: busbar and the switching and breaking elements, where the insulating medium is SF...
  • Page 7 General instructions Description and main characteristics cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Each tank has a manometer for checking the gas Optionally, the gas tank includes a contact inspection camera that allow to see on-live through a tablet the pressure, which can easily be seen from outside the cubicle.
  • Page 8 Description and main characteristics General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Switch-disconnector and grounding switch: This has 2. Driving mechanism compartment: this is the three positions: closed, open or grounded. compartment in which the switch-disconnector, grounding switch or the circuit-breaker is actuated, This switch is operated using driving mechanisms with two...
  • Page 9 General instructions Description and main characteristics cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards cgm.3-s cgm.3-s-ptd Pressure gauge window ekor.sas, acoustic grounding prevention alarm Switch-disconnector actuation zone (B and BM driving Pressure gauge window mechanisms) ekor.sas, acoustic grounding prevention alarm...
  • Page 10 Description and main characteristics General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards cgm.3-s-pti cgm.3-p ekor.sas, acoustic grounding prevention alarm ekor.sas, acoustic grounding prevention alarm Manometer window Pressure gauge window ekor.vpis / ekor.ivds voltage presence indication unit Voltage indicator ekor.vpis or ekor.ivds Operation area:...
  • Page 11 General instructions Description and main characteristics cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards cgm.3-v cgm.3-rb-pt Pressure gauge window Pressure gauge window Voltage presence indicator ekor.vpis / ekor.ivds ekor.vpis / ekor.ivds voltage presence indication unit Operation area: Operation area: •...
  • Page 12 Description and main characteristics General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards cgm.3-rb cgm.3-rc / cgm.3-r2c ekor.vpis / ekor.ivds voltage presence indicator Figure 1.14. Mimic diagram of cgm.3-rb Figure 1.15. Mimic diagram of cgm.3-rc / -r2c cubicle IG-183-EN version 06;...

  • Page 13: Voltage Presence Indication Unit

    Figure 1.16. Cable compartment 1.1.1. Voltage presence indication unit Ormazabal has two voltage presence indication options: The ekor.vpis unit for detecting voltage, designed in • accordance with standard IEC 62271-206. The ekor.ivds unit for detecting voltage, designed in •...

  • Page 14: Ekor.sas - Acoustic Grounding

    Description and main characteristics General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 1.1.2. ekor.sas - acoustic grounding prevention alarm unit The ekor.sas grounding prevention alarm is an acoustic indicator which works in association with the grounding shaft handle and the ekor.vpis voltage presence indicator.
  • Page 15 Rated operating duty cycle in circuit-breaker cubicle Rated short-circuit switching current in circuit- breaker cubicle Address Factory address * In the event of a problem or non-conformity, note down this number and send it to Ormazabal. Table 1.4. Nameplate IG-183-EN version 06; 31/03/2020...

  • Page 16: Mechanical Characteristics

    [695] [1205] [1] Cubicle with double cable: 36.69 inches (930 mm). [2] As an option, there is also available a 23 inches (595 mm) wide model of the cgm.3-v cubicle. Contact Ormazabal. Table 1.5. Dimensions and weights IG-183-EN version 06; 31/03/2020...

  • Page 17: Transport

    General instructions Transport cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Transport 2.1. Lifting methods The cubicles must always be kept upright, directly on the ground or on a pallet depending on the type of handling involved.
  • Page 18 Transport General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4. To handle 5 functional unit cgm.3 assemblies use lifting systems (slings, lifting beam, etc.) with a pull angle greater than 65° and less than 115° in order to prevent possible damage to the cubicles during hoisting.

  • Page 19: Location Of Documentation And Accessories During Transport

    General instructions Transport cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 2.2. Location of documentation and accessories during transport During transport, the cubicle must be perfectly seated and well as a set of accessories located at the rear of the cubicles, fixed so that it cannot move about and possibly damage the as indicated in the figures below: equipment.

  • Page 20: L And V Modules

    38 kV according to IEEE and CSA standards 2.2.2. l and v modules Depending on the medium voltage cubicle model, the accessory box contains some of the following items: • Ormazabal’s IG-183 General Instructions document • Actuating lever • Spring charging lever •...

  • Page 21: Storage

    38 kV according to IEEE and CSA standards Storage If they need to be stored, Ormazabal’s medium voltage After prolonged storage, clean all the insulating parts cubicles must be placed on dry ground or, if necessary, on carefully before commissioning the equipment.

  • Page 22: Installation

    It is advisable to cut the cellophane at the rear of the to check whether it has suffered any damage in transit. If so, cubicle or at the corner to avoid scratching the surface. contact Ormazabal immediately. 2. Remove the cellophane. The self-adhesive plastic must be removed from the cable compartment cover so that the equipment 3.

  • Page 23: Civil Engineering Works

    * With the use of rear stack. The space required to extend the assembly with an additional cubicle is 10 inches (250 mm) plus the width of the new cubicle. In the event of doubt, ask Ormazabal. Figure 4.2. Minimum installation distances Minimum distances (Inches) [mm] (3.9)

  • Page 24: Recomended Cable Trenchs

    Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4.3. Recomended cable trenchs Recomended mínimum dimensions according to the dimensions of the trench used during the test according to the IEC 62271-200 standard. Depending on the radius of curvature of the cables used these dimensions may vary.
  • Page 25 General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Fuse protection function Frontal or rear cables incoming or outgoing Lateral cables incoming or outgoing Figure 4.4. Dimensions [mm] of the cable trench for cgm.3-p Necessary cable trench for fuse protection raise functions Cable data Minimum depth...
  • Page 26 Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Circuit breaker function with AV / RAV driving mechanism Frontal or rear cables incoming or outgoing Lateral cables incoming or outgoing Figure 4.5.
  • Page 27 General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Metering function Figure 4.6. Dimensions [mm] of the cable trench for cgm.3-m Trench necessary for the metering function Approximate Minimum Cable section Cable diameter radius of...

  • Page 28: Cubicles With Iac Internal Arc Up

    Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4.3.2. Cubicles with IAC internal arc up to 25 kA – 1 s Feeder, busbar raise and cable raise functions Frontal or rear cables incoming or outgoing Lateral cables incoming or outgoing Figure 4.7.
  • Page 29 General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Fuse protection function Frontal or rear cables incoming or outgoing Lateral cables incoming or outgoing Figure 4.8. Dimensions [mm] of the cable trench for cgm.3-p Necessary cable trench for fuse protection cubicle Cable data Minimum depth...
  • Page 30 Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Circuit breaker function with AV / RAV driving mechanism Frontal or rear cables incoming or outgoing Lateral cables incoming or outgoing Figure 4.9.

  • Page 31: Fastening To The Floor

    General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4.4. Fastening to the floor Before assembling the cubicles, the floor must be carefully profile. leveled to prevent any deformation which may make it difficult to connect the cubicles to one another.
  • Page 32 Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 2. Remove the cable compartment cover, using the central handle on the cover to pull it up and forward as indicated in the figure.
  • Page 33 General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Anchoring dimensions (inches) [mm] Module Internal arc up Internal arc up to 0.5 s to 1 s (14) (10) (21) (28) [50] [368]...
  • Page 34 Installation General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Figure 4.15. Anchoring points in cgm.3-rc cubicles Figure 4.17. Anchoring diagram cgm.3-m Figure 4.16. Anchoring points in cgm.3-rc cubicles Figure 4.18. Anchoring diagram cgm.3-2lp 1745 mm high IG-183-EN version 06;...
  • Page 35 General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Figure 4.19. Anchoring diagram cgm.3-2lp double cable 1745 mm high Figure 4.21. Anchoring diagram cgm.3-2lv7-rlv Figure 4.20. Anchoring diagram cgm.3-2lp 1400 mm high IG-183-EN version 06;...

  • Page 36: Connecting The Cubicles

    38 kV according to IEEE and CSA standards 4.5. Connecting the cubicles The joining of cubicles must be carried out as indicated in Ormazabal’s Spares and Accessories document RA-163, which is supplied with the materials kit used for connecting cubicles.

  • Page 37: Cable Connection

    General instructions Installation cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4.7. Cable connection The medium voltage incoming and outgoing feeders are The size of the cable compartment allows the use of both linked to the transformer or other cubicles via cables.

  • Page 38: Recommended Sequence Of Operations

    This operation connected to the transformer substations feeder cubicles. must be repeated for all the phases L1, L2 and L3. On demand, Ormazabal can supply the ekor.spc See section “1.1.1. Voltage presence indication unit” of phase comparator unit.
  • Page 39 General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Comparison of balanced phases There is NO indication on the comparator. Comparison of unbalanced phases YES, there is indication on the comparator. Figure 5.1.

  • Page 40: Operating Levers

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.2. Operating levers The cgm.3 system cubicles are operated with 3 different For safety reasons, maintenance operations performed types of lever, depending on the type of driving mechanism directly on the driving mechanism must be performed used.

  • Page 41: Cgm.3-L Cubicle

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.3. cgm.3-l cubicle 5.3.1. Opening operation from the grounded position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 42: Switch Closing Operation From

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.3.2. Switch closing operation from the open position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 43: Opening Operation From The Switch-Disconnector Closed Position

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.3.3. Opening operation from the switch-disconnector closed position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 44: Grounding Operation From

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.3.4. Grounding operation from the open position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 45: Cgm.3-S Cubicle

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.4. cgm.3-s cubicle 5.4.1. Switch-disconnector closing operation 1. Move the actuation shaft access handle to its lower position.

  • Page 46: Switch-Disconnector Opening Operation

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.4.2. Switch-disconnector opening operation 1. Move the actuation shaft access handle to its lower position. 2. Insert the lever in the actuation shaft and turn anticlockwise.

  • Page 47: Cgm.3-S-Ptd Cubicle

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.5. cgm.3-s-ptd cubicle 5.5.1. Opening operation from the grounded position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 48: Closing Operation From The Open Position

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.5.2. Closing operation from the open position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 49: Opening Operation From The Switch-Disconnector Closed Position

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.5.3. Opening operation from the switch-disconnector closed position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 50: Grounding Operation From

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.5.4. Grounding operation from the open position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 51: Cgm.3-S-Pti Cubicle

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.6. cgm.3-s-pti cubicle 5.6.1. Opening operation from the grounded position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 52: Closing Operation From The Open Position

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.6.2. Closing operation from the open position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 53: Opening Operation From The Switch-Disconnector Closed Position

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.6.3. Opening operation from the switch-disconnector closed position 1. Move the actuation shaft access handle in the grey zone to its lower position.

  • Page 54: Grounding Operation From

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.6.4. Grounding operation from the open position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 55: Cgm.3-P Cubicle

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.7. cgm.3-p cubicle 5.7.1. Opening operation from the grounded position 1. Move the actuation shaft access handle to its lower position.

  • Page 56: Switch-Disconnector Closing Operation From The Open Position (Using The Br-A Driving Mechanism)

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.7.2. Switch-disconnector closing operation from the open position (using the BR-A driving mechanism) 1. Move the actuation shaft access handle to its lower position.

  • Page 57: Opening Operation From The Switch-Disconnector Closed Position

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.7.3. Opening operation from the switch-disconnector closed position 1. The switch can be opened manually, using the push- button on the front of the cubicle, an opening coil, or due to action by the fuses.

  • Page 58: Grounding Operation From

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.7.4. Grounding operation from the open position 1. Move the actuation shaft access handle to its lower position.

  • Page 59: Fuse Replacement Sequence

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.8. Fuse replacement sequence If any of the 3 fuses blows, the switch-disconnector (a) will open automatically; this is indicated by the red position indicator (b) located on the front of the driving mechanism compartment.
  • Page 60 Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 3. Pull up the handle on the fuse holder cover until the locking clip is unhooked and then pull sharply outwards to open the fuse holder.
  • Page 61 General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 6. Insert the fuse holder carriage in its compartment by pulling it inward. Before inserting the fuse holder carriage in the fuse protection cubicle, ensure that both the carriage as well as the inside of the fuse holder are properly cleaned.
  • Page 62 Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 8. Close the cover and check that all the strikers have been reset. Figure 5.29. Closing the fuse holder 9.

  • Page 63: Selection Of Recommended Fuses

    If any of the fuses blows, we recommend changing all three. For overload conditions in the transformer or use of other brands of fuse, please consult Ormazabal. Table 5.10. Rated transformer power WITHOUT OVERLOAD IG-183-EN version 06; 31/03/2020...

  • Page 64: Cgm.3-Rb With Grounding

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.9. cgm.3-rb with grounding 5.9.1. Opening operation from the grounded position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 65: Grounding Operation From

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.9.2. Grounding operation from the open position 1. Move the actuation shaft access handle in the yellow zone to its lower position.

  • Page 66: Cgm.3-V Cubicle With Driving

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.10. cgm.3-v cubicle with driving mechanism A(M)V or RA(M)V Depending on the application this sequence of operations can be modified. Check the information of the corresponding sequence of operations plate built into the front of the switchgear.
  • Page 67 General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 2. Insert the lever in the grounding actuation shaft and turn anticlockwise. Figure 5.35. Process of turning the lever 3.

  • Page 68: Closing Operation From The Open Position

    Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.10.2. Closing operation from the open position Initial conditions: Grounding switch open, circuit- breaker closed and springs charged. Figure 5.37.
  • Page 69 General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 3. Insert the lever in the switch-disconnector actuation shaft and turn clockwise. Figure 5.40. Turn clockwise 4. Remove the lever. The handle returns to its original position.
  • Page 70 Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5. Close the circuit-breaker by pressing button “I”, and check the status indicator. Figure 5.42. Grounding switch open Manual driving mechanism (AV): Charge springs, operating the charge lever (see Section “5.2.2.

  • Page 71: Opening Operation From

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.10.3. Opening operation from the closed position Initial conditions: Grounding switch open, circuit- breaker closed and springs charged. Figure 5.43.
  • Page 72 Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4. Insert the lever in the disconnector actuation shaft and turn anticlockwise. Figure 5.46. Turn anticlockwise 5. Remove the lever. The handle returns to its original position.

  • Page 73: Grounding Operation From

    General instructions Recommended sequence of operations cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 5.10.4. Grounding operation from the open position Initial conditions: Grounding switch open, circuit- breaker closed and springs charged. Figure 5.48.
  • Page 74 Recommended sequence of operations General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 4. Insert the lever in the grounding switch actuation shaft and turn clockwise. Figure 5.51. Turn clockwise 5.

  • Page 75: Safety Elements

    General instructions Safety elements cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Safety elements 6.1. Earthing prevention acoustic alarm unit The ekor.sas earthing prevention alarm is an acoustic shaft. A sound then warns the operator that if he performs indicator which works in association with the earthing shaft the operation, a short-circuit in the network might occur.

  • Page 76: Locking With A Padlock

    , which allows its operation to be blocked in both the open and closed positions. Figure 6.2. Interlocking in cgm.3-l cubicle using keys See Ormazabal’s Spare and accessories instructions manual RA-165. IG-183-EN version 06; 31/03/2020...

  • Page 77: Maintenance

    The live parts of the main circuit and switching equipment necessary regular preventive maintenance tasks must do not require inspection or maintenance, as they are be carried out. Consult Ormazabal in accordance with completely insulated in SF , and therefore free from any the environmental conditions of the facility.

  • Page 78: Acoustic Grounding Prevention Alarm Test

    Maintenance General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 7.2. Acoustic grounding prevention alarm test To test that the ekor.sas acoustic alarm is working correctly, connect the ekor.vpis voltage presence indicator to 110 V / 230 V by means of 0.16 inches (4 mm) terminals,...

  • Page 79: Connecting The Ekor.sas Unit

    The maintenance should take place every 5 years or the gas tank may require preventive maintenance; the 2000 operating cycles, unless, based on the conditions of use, the user and Ormazabal consider otherwise. frequency of this maintenance depends on the existing environmental conditions (harsh environments, dust, extreme temperatures, etc.), and should be established...

  • Page 80: Replacement Of Contact

    Maintenance General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 7.4. Replacement of contact inspection camera This operation could be done in any of the three positions of the switch - disconnector. 1.
  • Page 81 General instructions Maintenance cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 3. Extract the cable from the driving mechanims compartment. Figure 7.6. Cable extraction 4. Bring the cable to the back part of the gas tank. Figure 7.7.
  • Page 82 Maintenance General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 6. Remove the cover and the O-ring. Extract the cable connection. Figure 7.9. Removing the cover and the cable 7. Insert the cable connection of the new camera, first through the O-ring and then through the cover of the camera housing.
  • Page 83 General instructions Maintenance cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 9. Retighten the O-ring with the cover. Figure 7.12. Position of the two bolts 10. Bring back the connection cable to the front part of the gas tank and insert it into the driving mechanism compartment.
  • Page 84 Maintenance General instructions cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards 11. Insert the end of the cable through the bulkhead of the driving mechanism compartment. Figure 7.14. Inserting the end of the cable 12.

  • Page 85: Spares And Accessories

    General instructions Spares and accessories cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Spares and accessories Although all the components of the cgm.3 cubicles have Some components can only be replaced by specifically passed both routine tests during the manufacturing qualified personel.
  • Page 86 All levers are of the anti-reflex type, making it impossible to perform an opening operation after closing. See Ormazabal’s Spare and accessories instructions manual RA-166 and general instructions manuals IG-158. See Ormazabal’s Spare and accessories instructions manual RA-257 ekor.ivds and general instructions manuals IG-157 and IG-159. For model see Ormazabal’s guide GP-025.

  • Page 87: Environmental Information

    General instructions Contents cgm.3 system: medium voltage SF gas-insulated cubicles up to 38 kV according to IEEE and CSA standards Environmental information cgm.3 cubicles are defined as a sealed, pressurized system For the usage and handling of the SF , the indications listed which contains sulfur hexafluoride (SF in IEC 62271-303 must be followed.
  • Page 88 Subject to change Ormazabal without prior notice y Cía. For further infotmation, IGORRE contact Ormazabal. Spain www.ormazabal.com...

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