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Summary of Contents for Velatia Ormazabal cgm.3
- Page 1 cgm.3 ENA type Medium voltage SF gas-insulated switchgears up to 36 kV Operation instructions IG-235-EN, version 02; 17/06/2021...
- Page 2 CAUTION! When medium-voltage equipment is operating, certain components are live, other parts may be in movement, and some may reach high temperatures. 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: ·...
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Page 3: Table Of Contents
Operation instructions Índex cgm.3 ENA type ÍNDEX Description and main characteristics Safety locking facilities and interlocking Switchgear elements ....4 1.1.1 Voltage presence indicator . -
Page 4: Description And Main Characteristics
Description and main characteristics Operation instructions cgm.3 ENA type Description and main characteristics 1.1 Switchgear elements cgm.3 ENA type range is made up of a range of fully gas insulated modular switchgears, which allow the Each switchgear is made up of a series of independent configuration of different medium voltage (MV) secondary compartments: electrical distribution diagrams up to 36 kV. - Page 5 Operation instructions Description and main characteristics cgm.3 ENA type Each gas tank has a manometer for checking the gas Vacuum circuit breaker: The cgm.3-v switchgear's circuit pressure, which can easily be seen from outside the breaker uses vacuum switching technology. switchgear.
- Page 6 Description and main characteristics Operation instructions cgm.3 ENA type cgm.3-p cgm.3-v Earthing switch actuation shaft Simultaneous switch - closing and spring charging actuation shaft (BR-A driving mechanism) Switch and earthing switch position indicator Actuation shaft access lever ekor.vpis voltage indicator Earthing switch actuation shaft Switch opening button (BR-A driving mechanism) Switch-disconnector actuation shaft (B and BM driving...
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Page 7: Voltage Presence Indicator
Operation instructions Description and main characteristics cgm.3 ENA type This unit provide a clear visual indication to the user, and do not require an auxiliary power supply to operate. For each of the three phases, the presence of voltage is indicated by intermittent flashing of the indicators. -
Page 8: Name Plate
Description and main characteristics Operation instructions cgm.3 ENA type 1.2 Mechanical characteristics 1.1.2 Name plate Every switchgear includes a name plate, with some of the The dimensions and weights of the cgm.3 switchgear following values: system are represented in the following table. Fig. - Page 9 Operation instructions Description and main characteristics cgm.3 ENA type Height Width (A) Depth (F) Height Weight Module bushing (G) [mm] [mm] [mm] [kg] [mm] Internal arc up to 16 kA - 1 s 1745 1042 Internal arc up to 21 kA - 1 s Internal arc up to 16 kA - 1 s 1010...
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Page 10: Recommended Sequence Of Operations
Recommended sequence of operations Operation instructions cgm.3 ENA type Recommended sequence of operations CAUTION Before carrying out any operation when the switchgear is energised, we recommend checking the gas pressure, using the manometer. In case of low gas pressure, contact to nearest Ormazabal office. -
Page 11: Mechanism Operating Handles
Operation instructions Recommended sequence of operations cgm.3 ENA type 2.2 Mechanism operating handles 2.2.2 Spring charging handle for circuit breaker driving mechanisms The spring charging handle is used to manually charge the CAUTION springs in the circuit breaker driving mechanism. For safety reasons, maintenance operations performed directly on the driving mechanism must be performed WITHOUT any operating handle inserted. -
Page 12: Cgm.3-L Switchgear
Recommended sequence of operations Operation instructions cgm.3 ENA type 2.3 cgm.3-l switchgear 2.3.3 Opening operation from the switch - disconnector closed position 2.3.1 Opening operation from the earthing Move and hold the actuation shaft access lever in position the grey actuation area to its lower position. Move and hold the actuation shaft access lever in Insert the handle in the switch-disconnector the yellow actuation area to its lower position. -
Page 13: Cable Test
Operation instructions Recommended sequence of operations cgm.3 ENA type 2.3.5 Cable test To test the cables in cgm.3-l feeder switchgears, B/BM driving mechanisms with this feature must be ordered. These driving mechanisms allow the operation of going from earthing switch closed to switch-disconnector open, even when the cable compartment cover is open. -
Page 14: Selection Of Recommended Fuses
Recommended sequence of operations Operation instructions cgm.3 ENA type Fig. 2.14: Earthing operation from open position in cgm.3-p 2.4.5 Selection of recommended fuses The fuses recommended for use in the fuse protection functional unit are defined according to tests carried out by the manufacturers. -
Page 15: Fuse Replacement Sequence
Operation instructions Recommended sequence of operations cgm.3 ENA type 2.4.6 Fuse replacement sequence Pull up the handle on the fuse holder cover until the locking clip is unhooked and then pull sharply If any of the three fuses blows, the switch-disconnector (A) outwards to open the fuse holder. - Page 16 Recommended sequence of operations Operation instructions cgm.3 ENA type Replace the blown fuse, taking special care with the striker as shown in the figure. CAUTION Before inserting the fuse holder carriage in the fuse- protection switchgear, ensure that both the carriage as well as the inside of the fuse holder are properly cleaned.
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Page 17: Cgm.3-Rb Switchgear With Earthing
Operation instructions Recommended sequence of operations cgm.3 ENA type 2.5.2 Earthing operation from the open position Move and hold the actuation shaft access lever in the yellow actuation area to its lower position. Insert the handle in the earthing switch actuation shaft and turn clockwise. -
Page 18: Closing Operation From The Open Position
Recommended sequence of operations Operation instructions cgm.3 ENA type Fig. 2.26: Opening from earth for AV-EF and RAV-EF (3G) mechanisms 2.6.2 Closing operation from the open position Initial conditions: Earthing switch open, circuit breaker open. Move and hold the access lever in the grey actuation area to its lower position. -
Page 19: Opening Operation From The Closed Position
Operation instructions Recommended sequence of operations cgm.3 ENA type Fig. 2.27: Connection from Open Position for AV-EF and RAV-EF (3G) mechanisms 2.6.3 Opening operation from the closed position Initial conditions: Circuit breaker closed, earthing switch open and springs charged. Open the circuit breaker by pressing the “0” opening button on the front push-button and check the status indicator. -
Page 20: Earthing Operation From The Open Position
Recommended sequence of operations Operation instructions cgm.3 ENA type Fig. 2.28: Disconnection from closed position for AV-EF and RAV-EF (3G) mechanisms 2.6.4 Earthing operation from the open position Initial conditions: Circuit breaker open and earthing switch open with springs charged. Move the access lever in the yellow actuation area to its lower position. -
Page 21: Cgm.3-V Switchgear With Driving Mechanism A(M)V And Ra(M)V (3G)
Operation instructions Recommended sequence of operations cgm.3 ENA type Fig. 2.29: Earthing from open position for AV-EF and RAV-EF (3G) mechanisms When undertaking work with the switchgear powered down, it is mandatory to interlock the earthing position with either a padlock or a safety lock. -
Page 22: Closing Operation From The Open Position
Recommended sequence of operations Operation instructions cgm.3 ENA type Fig. 2.30: Opening from earth for AV and RAV (3G) mechanisms 2.7.2 Closing operation from the open position Initial conditions: Earthing switch open, circuit breaker closed and springs charged. Open the circuit breaker by pressing the “0” button on the front push-button and check the status indicator. -
Page 23: Opening Operation From The Closed Position
Operation instructions Recommended sequence of operations cgm.3 ENA type Fig. 2.31: Connection from Open Position for AV and RAV (3G) mechanisms 2.7.3 Opening operation from the closed position Initial conditions: Circuit breaker closed, earthing switch open and springs charged. Open the circuit breaker by pressing the “0” opening button on the front push-button and check the status indicator. -
Page 24: Earthing Operation From The Open Position
Recommended sequence of operations Operation instructions cgm.3 ENA type Fig. 2.32: Disconnection from closed position for AV and RAV (3G) mechanisms 2.7.4 Earthing operation from the open position Initial conditions: Circuit breaker open and earthing switch open with springs charged. Close the circuit breaker by pressing the “I”... - Page 25 Operation instructions Recommended sequence of operations cgm.3 ENA type Fig. 2.33: Earthing from open position for RAVAV and RAV (3G) mechanisms When undertaking work with the switchgear powered down, it is mandatory to interlock the earthing position with either a padlock or a safety lock.
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Page 26: Safety Locking Facilities And Interlocking
Safety locking facilities and interlocking Operation instructions cgm.3 ENA type Safety locking facilities and interlocking 3.1 Mechanical interlocking 3.2.2 Locking with a key lock (optional) Both the switch-disconnector and the earthing switches cgm.3 ENA type switchgear incorporates safety can have an optional locking interlock device, which allows mechanical locking required to ensure the following its operation to be key-locking in both the open and closed conditions:... -
Page 27: Maintenance
Operation instructions Maintenance cgm.3 ENA type Maintenance CAUTION For safety reasons, maintenance operations performed directly on the driving mechanism must be performed WITHOUT any operating handle inserted. The live parts of the main circuit and breaking/connection equipment do not require inspection or maintenance, as they are completely insulated in gas, and therefore free from any influence from the external environment. -
Page 28: Additional Information
Additional information Operation instructions cgm.3 ENA type Additional information 5.1 Current transformers arrangements 5.2 Spares and accessories The current transformers for the cgm.3-v cubicle are Although all the components of the cgm.3 switchgears allocated at the lower area inside the cable compartment. have passed both routine tests during the manufacturing process and type tests prior to approval, some of them can be changed, replaced and even installed on site. -
Page 29: Environmental Information
Operation instructions Additional information cgm.3 ENA type Locks and interlocks Earth connection OPEN Earth connection CLOSED Switch OPEN Switch CLOSED Earth connection CLOSED + OPEN Opening the cable access cover Others Control box Auxiliary profiles for anchorage to the floor Lateral incoming cable box (*) Only in feeder functional units 5.3 Environmental information... - Page 30 Notes Operation instructions cgm.3 ENA type Notes IG-235-EN version 02...
- Page 32 Ormazabal Subject to changes y Cía. without prior notice. IGORRE For more information, Spain contact Ormazabal. www.ormazabal.com...
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