NORMAFIX
NORMAFIX Modular Distribution Switchgear INSTRUCTIONS Nº453030007
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NORMAFIX
SECURITY INSTRUCTIONS
Read this manual carefully before proceeding with any handling, operation and maintenance action. Failure to follow safety recommendations, could lead to serious physical and material injury. This manual should be accessible to all people involved in the installation, operation and maintenance of the equipment. The equipments described in this manual were designed and tested to operate within their nominal values. Use outside this range may result in malfunction, and could cause serious physical and material injury. The cells and switches are equipped with safety interlocks making its use simple and secure. Do not force them. This equipment can be remotely controlled and contains live and mechanical parts that move at high speed. In the cells with circuit breakers, never perform checks on the circuit-breaker while it is closed or with the closing springs charged. The circuit breaker must be open and the closing springs discharged. (See the DIVAC Instruction Manual)
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TABLE OF CONTENTS 1. GENERAL TECHNICAL CHARACTERISTICS ......................................................... ............................................. 3 2. MODULAR UNITS ............................................................................................................................................... 4 2.1 IS Cubicle ................................................................................................................................................... 4 2.2 CIS Cubicle ................................................................................................................................................. 4 2.3 DC Cubicle .......................................................... ................................................................. ....................... 5 2.4 M Cubicle ............................................................ ................................................................. ....................... 5 2.5 SBM Cubicle ............................................................................................................................................... 5 2.6 CD Cubicle .......................................................... ................................................................. ....................... 6 2.7 TT Cubicle .................................................................................................................................................. 6 2.8 DB Cubicle .................................................................................................................................................. 6 3. OVERVIEW OF MODULAR UNITS ..................................................................................................................... 7 4. OPERATING MECHANISMS .............................................................. ................................................................ 10 5. SF6 SYSTEM ..................................................................................................................................................... 12 6. DISPATCH ........................................................................................................................................................ 13 7. RECEPTION ...................................................................................................................................................... 13 8. INSTALLATION ................................................................................................................................................ 14 8.1 Preparing the floor ................................................................................................................................. 14 8.2 Unpacking ................................................................................................................................................. 14 8.3 Installation on site ....................................................... ................................................................. .......... 14 8.4 Panels assembly ...................................................................................................................................... 15 8.5 Fastening the panels to the floor f loor ......................................................................................................... 15 8.6 Connection of the earthing circuit ...................................................................................................... 16 8.7 Busbar connection .................................................................................................................................. 16 8.8 Cables connection .................................................................................................................................. 17 8.9 Toroidal transformers Cable Connections .......................................................................................... 19 8.10 Assembling of fuses .............................................................................................................................. 19 8.11 Definition of fuses ................................................................................................................................ 20 9. START-UP ........................................................................................................................................................ 20 9.1 Essential checking .................................................................................................................................. 20 9.2 Switchgear operations ........................................................................................................................... 20 9.3 Voltage feeding ....................................................................................................................................... 20 9.4 Live cables control ................................................................................................................................. 21 9.5 Phase agreement control in “Incoming” panels ........................................................... ..................... 21
9.6 Busbar feeding and fuses protection ........................................................ ........................................... 21 10. EXPLOITATION .............................................................................................................................................. 22 10.1. Operating mechanism operation ...................................................................................................... 22 10.2. Earth Switch opening operation (CI1 and CI2) ............................................................................... 22 10.3. Earth Switch closing operation (CI1 and CI2) ................................................................................. 23 10.4. Switch closing operation (CI1 or CS1) .............................................................. ................................ 23 10.5. Switch opening operation (CI1 or CS1) ............................................................................................ 24 10.6. Switch closing operation and recharge for opening (CI2 - transformer protection function) function) 24 10.7. Switch opening operation (CI2 - transformer protection function) ............................................ 25 10.8. Closing and opening operations (Vacuum Circuit Breaker, CDV mechanism) ........................... 25 10.9. Closing and opening operations (SF6 Circuit Breaker, CLR mechanism) ................................... 26 12. REPLACEMENT .............................................................................................................................................. 27 12.1 Replacing the Voltage Signalization lamps ...................................................................................... 27 12.2 Fuse replacement ................................................................................................................................. 27 12.3 Removing the automatic switch disconnector of the cubicle ....................................................... 28 12.4 Removing cover mechanism ........................................................... ..................................................... 29 13. SPARE PARTS ................................................................................................................................................ 29
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1. GENERAL TECHNICAL CHARACTERISTICS
Rated voltage Insulation level - Power frequency (Hz - 1min) -Lightning impulse (1,2 / 50s) Rated current Busbar Incoming/Outgoing Fuses Protection Circuit-Breaker Protection Rated short-time current Making capacity Frequency Internal Arc (IAC A-FL) Ambient temperature Rated filling pressure (20ºC) Category of loss of service continuity Class partition Degrees of protection (CEI 60529 e EN 50102)
12 kV
17,5 kV
24 kV
36 kV
28 kV 75 kV
38 kV 95 kV
50 kV 125 kV
70 kV 170 kV
630 A 400 A 630 A 200 A 630 A 16 (3s) kA 20 (1s) kA 40 kA 50 kA 50 Hz 16 kA (1s) -5 a 40 ºC 0,3 bar rel
630 A 400 A 630 A 200 A 630 A 16 (3s) kA 20 (1s) kA 40 kA 50 kA 50 Hz 16 kA (1s) -5 a 40 ºC 0,3 bar rel
630 A 400 A 630 A 200 A 630 A 16 (3s) kA 20 (1s) kA 40 kA 50 kA 50 Hz 16 kA (1s) -5 a 40 ºC 0,3 bar rel
630 A 400 A 630 A 200 A 630 A 16 (3s) kA 40 kA 50 Hz 16 kA (1s) -5 a 40 ºC 0,3 bar rel
LSC 2A (according to CEI 62271-200) PI (according to CEI 62271-200) IP65 (medium voltage compartment) IP3XC (mechanism compartment) IP 3XC (cable compartment) IK09 (medium voltage compartment) IK08 RAL 7035
Standard colour
Panels dimensions up to 24 kV Panel type IS CIS DC CD M SBM TT DB
Width (mm) 375 375 750*** 375 750 750 500 750
Height** (mm) 1575 (+400) 1575 (+400) 1575 (+400) 1575 (+400) 1575 (+400) 1575 (+400) 1575 (+400) 1575 (+400)
Depth* (mm) 860 (+110) 860 (+110) 860 (+110) 860 (+110) 860 (+30) 860 (+110) 860 (+110) 860 (+110)
Weight (kg) 100 110 355 80 175 200 150 460
* Depth of 860 mm for the standard cubicle, adding 110 mm for the operating mechanism. ** Height of 1575 mm for the standard cubicle, adding 400 mm for the top compartment. *** Width of 750 mm for the standard cubicle, adding 250mm if cubicle is equipped with voltage transformers.
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Panels dimensions of 36 kV Panel type IS CIS DC CD M SBM TT DB
Width (mm) 600 600 1200 600 1200 1200 600 1200
Height** (mm) 2010 (+400) 2010 (+400) 2010 (+400) 2010 (+400) 2010 (+400) 2010 (+400) 2010 (+400) 2010 (+400)
Depth* (mm) 1155 (+110) 1155 (+110) 1155 (+110) 1155 (+110) 1155 (+30) 1155 (+110) 1155 (+110) 1155 (+110)
Weight (kg) 275 300 900 245 470 560 420 1000
* Depth of 1155 mm for the standard cubicle, adding 110 mm for the operating mechanism. ** Height of 2010 mm for the standard cubicle, adding 400 mm for the top compartment.
2. MODULAR UNITS 2.1 IS Cubicle
Switch Disconnector Cubicle (IS) Cubicle for incoming/outgoing cable equipped with switch disconnector ISF (with operation mechanism CI1).
2.2 CIS Cubicle
Transformer Protection Cubicle (CIS) Cubicle for transformer protection by fuses, equipped with switch disconnector ISF (with operation mechanism CI2).
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2.3 DC Cubicle
Cables Protection Cubicle (DC) with circuit breaker. The circuit breaker interrupting technology can be vacuum (DIVAC type) or SF6 (DIFLU type).
2.4 M Cubicle
Measure Cubicle (M) Cubicle for measuring current and/or voltage. Different versions are available: - Lateral incoming and outgoing; - Incoming and outgoing by cable; - Incoming by cable and lateral outgoing.
2.5 SBM Cubicle
Sectioning and Measure (SBM) Cubicle for sectioning and measuring the current and/or voltage. Versions are available with the right or left rise.
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2.6 CD Cubicle
Direct Incoming Cubicle (CD ) Cubicle incoming or outgoing cables direct.
2.7 TT Cubicle
Voltage Transformer Cubicle (TT) Cubicle for measure voltage with protection of VT’s by fuses.
2.8 DB Cubicle
Bars Protection Cubicle (DB) Cubicle for protection bars and measuring the current and/or voltage. Versions are available with arrival to the right or left.
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3. OVERVIEW OF MODULAR UNITS Cubicle IS
1- Accessories for lifting the cubicle 2- Low voltage compartment 3- Earth switch operating mechanism 4- Mechanical synoptic state of the switch disconnector 5- Switch disconnector operating mechanism 6- Live cables signalling neon lamps 7- Cable compartment access door 8- Earth main bar 9- Busbar access panel 10- Busbar deflector Cover 11- Busbar 12- ISF Switch Disconnector 13- Die for cable connection MT 14- Capacitive insulator of support 15- MV Cables 16- Tightening of cables
8 9
1
10 2
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12
3 4 13 5 14 6 15 7
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Cubicle CIS
1- Accessories for lifting the cubicle 2- Low voltage compartment 3- Mechanical synoptic state of the switch disconnector 4- Earth switch operating mechanism 5- Switch disconnector operating mechanism 6- Live cables signalling neon lamps 7- MV Cables acess painel 8- Earth circuit 9- Busbar access panel 10-Busbar deflector 11- ISF Switch Disconnector 12- Fire system protection fuse 13- Upper fuse support 14- MV Fuses 15- Bottom fuse support 16- Capacitive insulator of support 17- Additional Earth switch 18- MV Cables 19- Tightening of cables
8 9 1 10 2 11
12 3
13
4 5 14 6
15 7
16 17 18
19
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Cubicle DC
1- Accessories for lifting the cubicle 2- Low voltage compartment 3- Mechanical synoptic state of switch disconnector 4- Self-powered protection relay 5- Hole insert lever (charging the springs of circuit breaker) 6- Button to open and close the circuit breaker 7- Mechanical synoptic state of circuit-breaker 8- Earth main bar 9- Busbar access panel 10- Disconnector SF 11- Earth switch operating mechanism 12- Disconnector operating mechanism 13- Live cables signaling neon lamps 14- MV Cables access panel
8 9
1
2
10
3
11 12 13
4 14
5 6 7
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4. OPERATING MECHANISMS Operating Mechanism CI1, CS1 e CST (Switch Disconnector and Earth Switch) 1 – Lever for the manual operation of the switch or the earthing switch 2 – Switch Disconnector status indicator
2
3
5
6
4
Operating mechanism Earth switch: 3 – Hole to insert Earth Switch interlocking pin 4 – Hole for operating lever of the earth switch
1
Operating mechanism Switch Disconnector (or Disconnector): 5 – Hole to insert Switch Disconnector interlocking pin 6 – Hole for operating lever of the Switch Disconnector
Operating mechanism CI2 (Switch Disconnector and Earth Switch) 1 – Operating lever tol Switch Disconnector and Earth Switch 2 – Synoptic to indicate mechanical state of the Switch Disconnector and earth switch
2
3
4
Operating mechanism Earth Switch: 3 – Hole to insert Earth Switch interlocking pin
1
4 – Hole for operating lever of the earth switch CI2 Operating mechanism Switch Disconnector (Only CIS cubicles):
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7 – Hole to insert Switch Disconnector interlocking pin 8 – Hole for operating lever of the Switch Disconnector 9 – Fuse fusion signaling 10 – Button for manual opening of Switch Disconnector
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8
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Operating mechanism functional principle CI1(M), CI2(M), CS1, CST
The maneuver of a lever drags a spring away from a balanced position. In this position, releases the spring stretching up abruptly and independently of the operator.
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FUNCTIONAL PRINCIPLE “Tumbler” CI1(M)
CS1
CST
operating
mechanism.
Opening and closing operations are manually or electrically performed with a speed independent from the operator's action. (Recharging time <= 10s at Un) “Tumbler”
CI2(M)
type
APPLICATION EXAMPLES
type
operating
Feeder function equipment (set a net to service or remove it from service) and transformer fuse protection (load protection through ISF fuses without tripping). CI1M enables the ISF remote switch operation.
mechanism.
Equipped with stored-energy spring system Switch tripping by means of one or exclusively for opening. The closing more Fuses. operation is followed by a recharge Switch tripping due to transformers operation that enables an eventual opening protection relays. operation in less than 100 ms through a Switch opening. release magnet, a fuse or a push-button Double function operating mechanism with dependent operations for the SF switch and independent operations for the cable earthing switch (DC panels). Earthing switch operating mechanism. Closing and opening speed are independent from the operator’s action.
Enables the simultaneous control of two SF switches (DB panels)
Enables the switchcontrol
CD
panel
earthing
CDV Mechanism (Vacuum Circuit-Breaker) 1 – Lever (charging system the springs of circuit breaker) 2 – Button to open and close the circuit breaker 3 – Mechanical synoptic state of circuit breaker
4 – Hole to insert lever (charging system the springs) 5 – Maneuvers counter 6 – Mechanical synoptic state of springs
1
4
2
5
3
6
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CLR mechanism (SF6 circuit breaker) 1 – Lever (charging system the springs of circuit breaker 2 – Maniple for open and close the circuit breaker 3 – Mechanical synoptic state of circuit breaker
4 – Mechanical synoptic state of springs 5 – Maneuvers counter 6 – Hole to insert lever (charging system the springs)
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1 2
5
3
6
5. SF6 SYSTEM
The ISF switches and SF isolators, of insulation in SF6, used in the NORMAFIX cells are devices that are watertight and sealed for life (according to IEC 62271). The tightness of this equipment is guaranteed by routine tests performed. The expected life of this equipment is 30 years. To access the valve it is necessary to remove the hood of the engine command (see instructions in this manual.) Features of the valve used: Supplier: EFACEC Model: 37409072 Dimensions: DN14,5 The valve is resistant to decomposing SF6.
Operations to remove the SF6 Switches shall be conducted by EFACEC technicians.
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6. DISPATCH
The NORMAFIX cells are shipped with the switch open and the earthing switch closed. The NORMAFIX cells are shipped individually on a wooden pallet (fixed by four screws and covered with transparent plastic film). Accessories for mounting and wiring of the cells are supplied separately.
7. RECEPTION
Identify and confirm in the panels received: The function through the synoptic The rating plate The good condition of the material Confirm the existence of the separated material package. Any irregularities found, should be mentioned in the delivery note.
120º Max
Panels must remain fixed to the transportation wooden pallet until assembled. Panels are displaced with the help of the following tools: Travelling crane Pallet-carrier For the safety of the operator and the equipment itself, the units must be transported laterally.
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The panels should be stored with its original packaging, to avoid dust, splashing water and chemicals, in a well ventilated and dry area, at a temperature between -25°C and +40°C.
8. INSTALLATION 8.1 Preparing the floor
The floor maximum admissible unevenness is of 2 mm/m in order to allow an easy mounting and a good final appearance of the panels set. 8.2 Unpacking
Once the panels are near the assembly place and in the foreseen order: Remove the plastic film; Open the cable compartment door (earthing switch must be in the closed position); Remove the four screws (wrench 17) holding the cubicle to the base; Rotate the panel in order to release it from the base and place it on the floor according to movement instructions.
8.3 Installation on site
Removed the access to the cable compartment; Check the verticality, using pads if necessary; Fix it to the ground.
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8.4 Panels assembly
Position the first panel and fix it to the floor. Then, position the second panel and connect it to the first by using M8x16H screws, M8 washers and M8H nuts and fix it to the floor. Do the same for the remaining cubicles.
It is necessary to place the side end panels at the end of the set of cells. They use 14 M6 screws, washers and riveted nuts (supplied as accessories) to attach each panel.
Note: The assembly should be done with the roof panel to access the bus and cable compartment door removed. 8.5 Fastening the panels to the floor
Refer to the deployment plan of the panels where its configuration is set, the overall dimensions and recommended points of attachment to the floor. The panels are fixed to the ground by means of M12 screws (4 attachment points in the end cells, and two diagonal fixing points in the others).
200 mm
20 mm
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8.6 Connection of the earthing circuit
All NORMAFIX components (bars, cables connections, fuses, etc.) are interconnected and connected to the earth by the same copper circuit. (*)
(*) – Points of connection of the busbar circuit common ground
Tighten the copper bars of the circuit ground to ensure continuity. Tighten the M8H nuts with 0.9 daNm binary.
In the cell at the edge of the frame, turn the general collector to the protective earth of the installation through a copper conductor of 50 mm², M8H bolt, washer and nut (binary 1.9 daNm)
8.7 Busbar connection
It is not necessary to prepare the contact surfaces (eventually, a simple dust cleaning). However, if the panels have been stored for a long time, check the contacts for oxidation. Starting at a switchboard end and always at the rear phase L1. To access the bus it is necessary to remove the access panels (top of the panel).
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Starting at a switchboard end and at the rear phase L1: Arrange the bars over the upper sockets; Place the deflectors, screws and washers in position (orient the deflectors on the correct position); Immobilize the fixing screws with a fastening binary of 2,4 daNm, wrench 17.
8.8 Cables connection
NORMAFIX was designed for use with cable, shrink or silicon terminals. The selection of the cables and cable terminals are the responsibility of the customer. The materials should be compatible with the NORMAFIX equipment. To access the cable compartment and work safely, you must open the load break disconnector switch and close the earthing switch.
Remove the cable access panel; Dismantle the lower front crossbar (2 nuts, wrench 13); Dismantle the medium front crossbar (2 nuts, wrench 13); Extract the first three elements of the bottom plate;
2
1
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Access the current switch screw where the terminal is fixed to the cable (on the panels IS and CD it is necessary to remove the deflector); Place the cables at terminal height, starting by the furthest phase; Mark the terminal lower limit on the cables; Pull the cables outside and execute the ends following the cable manufacturer's instruction;
Starting from the farther phase, locate the current terminal and fasten the screw with the nut and washer - tightening torque 4,5 daNm (and, replacing the deflector in the IS and CIS); Assemble the second element of the bottom plate, taking care to leave the cable earth plait above the plate. Cut the cable bushing according with the cable outside diameter and insert it down the cable to the bottom plate. Adapt the tightening clamps and immobilise the nuts (wrench 13), being careful not to overtorque the cable.
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Connect the three cable earth plaits to the earth main bar with M8x30H screws and immobilize the nut with a wrench 13, tightening torque 0,9 daNm.
8.9 Toroidal transformers Cable Connections
It is possible to install toroidal current sensors in fault detector’s cables. To assure its correct operation, it is necessary to confirm that the earth cable connection is made from the interior of the current sensors.
8.10 Assembling of fuses
Proceed as indicated in figures: Using the fuse itself, rise the fuse holder upper shell cover; Fit the fuse lower part into the fuses holder lower shell; Fit the fuse upper part into the fuses holder upper shell making sure that the upper shell cover is correctly closed; The fuse should not be held by its central part.
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In the case of fuses with striker:
Remove the label of protection of the striker, when installing the fuse for the first time; Make sure the striker is positioned correctly (upwards).
8.11 Definition of fuses
Power of transformer kVA 100 125 160 200 250 315 400 500 630 800 1000 1250 1600 2000
10/11 kV 16 16 20 25 31.5 40 50 63 80 100 125 160 160 250
Transformer - primary voltage 13.8 kV 15kV 20kV 24/25 kV Rated current (A) IN (**) 10 10 10 10 16 10 10 10 16 16 16 10 20 16 16 16 25 20 16 16 31.5 25 20 20 40 31.5 25 25 50 40 31.5 31.5 63 50 40 40 80 63 50 50 100 80 63 63 125 100 80 80 (*) 125 100 (*) (*) (*) (*) (*)
30 kV 10 10 10 10 10 16 16 20 25 31,5 40 50 (*) (*)
(*) The fuse definition must consider the power loss limits (indicated in the fuse documentation) (**)To (IN a: –5ºC T of service 1.2 x IS.
+40ºC) and power transformer > 1000 kVA, the maximum intensity
9. START-UP
9.1 Essential checking
Confirm the proper connection of the busbar, cable, earth circuits, measuring TF’s and auxiliary LV circuits; Confirm the proper assembly of the fuses, busbar and cable field deflectors and cable compartment panels; Confirm that the pressure indicator (if applicable) is in the green zone
9.2 Switchgear operations
Confirm the proper functioning of the equipment and of the interlocking, by operating the Switch and the Earthing Switch.
9.3 Voltage feeding
Confirm that all devices are in “open” position.
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9.4 Live cables control
After having fed the cubicle "A" cables, check whether the L1, L2, L3 live cables indicating lamps, mounted in the operation panel, are lit; Feed cubicle "B" cables and check the lighting of the live cables indicating lamps.
9.5 Phase agreement control in “Incoming” panels
Check the phase agreement using the movable control device "C" for that purpose: - Insert the "C" male plug into the panel “A” L3 device test socket. - Insert the lead male plug into the panel “B” L3 device test socket. If there is phase agreement: - Panels A and B L3 control device lamps are lit. - The movable device "C" lamp is switched off. If there is phase disagreement: - Panels A and B L3 control device lamps have reduced luminosity. - The movable device "C" lamp switches on. - Repeat the same operations for phases L1 and L2. Remark: In order to confirm the proper functioning of the phase agreement movable device, connect the two plugs of the later to two phases of the same cubicle: the lamp should switch on. 9.6 Busbar feeding and fuses protection
Close the incoming panels(s) switch(es); Close the outgoing panels and general protection switch; Check whether the L1, L2, L3 live cables indicating lamps of this last panel are lit.
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10. EXPLOITATION 10.1. Operating mechanism operation
The cubicles are shipped with switch disconnector in the open position and earth switch in closed position. All maneuvers are made without great efforts. The motorization is not operational if the maneuver lever is placed.
The mechanism is operated using an operating lever backstop, which function is to prevent that it goes directly to the switch open position after making the closing maneuver.
Switch closed Earthing switch open
Switch opened Earthing switch opened
Switch opened Earth switch closed
10.2. Earth Switch opening operation (CI1 and CI2)
This maneuver is possible only if the earthing switch is closed. Insert the lever into the slot of the earthing switch maneuver. Rotate the lever counter-clockwise to the "open" position.
This action will jam the front cable panel and release the position of the open switch.
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10.3. Earth Switch closing operation (CI1 and CI2)
This maneuver is only possible if the switch is in open position Insert the lever into the slot of the earthing switch maneuver. Check that the cables do not have voltage (indicator of the presence of voltage) Close the earthing switch, moving the lever to the final position, steering it clockwise
This maneuver: Closes the Earth switch; Unlocks the cable access front panel; Interlocks the Switch in the opened position (it cannot be closed). 10.4. Switch closing operation (CI1 or CS1)
This maneuver is possible only if the earthing switch is in the "open" position Insert the lever into the slot of the maneuver switch. Operate the lever clockwise until the final position - the switch closes abruptly. The command of the earthing switch is stuck in the "open" position.
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10.5. Switch opening operation (CI1 or CS1)
This maneuver is only possible if the switch is in the closed position; Insert the lever into the slot of the Switch maneuver; Operate the lever counter clockwise to the “open” position – the switch opens up shaply; The earth switch mechanism is then cleared and can be closed.
10.6. Switch closing operation and recharge for opening (CI2 - transformer protection function)
This maneuver possible only if the earth switch is in the open position; Insert the lever into the slot fo the Switch maneuver; Operate the lever clockwise until the final position; The Switch closes and the lever remains captive.
Attention, essential maneuver following the closure of the ISF: Operate imperatively the handle, clockwise, in order to recharge the spring. After completing this action the handle may be removed and the Switch is now ready to be opened.
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10.7. Switch opening operation (CI2 - transformer protection function)
The opening operation can be made: Manually (shutter release button in the mechanism) By a coil opening (optional) By fuses (fuses mechanical action)
10.8. Closing and opening operations (Vacuum Circuit Breaker, CDV mechanism)
Use the lever to load the springs (execute vertical movements) Close the circuit breaker by pressing the close button The circuit breaker will be ready to make an opening maneuver (by pressing the release button feeded by the release coil) If you want to make a new maneuver, it is necessary to recharge the springs again, even if the circuit breaker is not open. If the circuit breaker has a powered mechanism, it will charge the springs automatically when necessary.
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10.9. Closing and opening operations (SF6 Circuit Breaker, CLR mechanism)
Use the lever to load the springs (operate clockwise circular movements). Close the circuit breaker by turning the maneuver button in a counter-clockwise direction. The circuit breaker will be ready to make an opening maneuver (turning the maneuver button clockwise or by discharging the opening coil). If you want to make a new maneuver, it is necessary to recharge the springs again, even if the circuit breaker is not open. If the circuit breaker has a powered mechanism, it will charge the springs automatically when necessary.
11. MAINTENANCE NORMAFIX is a maintenance-free product.
However, when the switchgear is inoperative for a long time or if it is under severe environmental conditions (dust, humidity, salty etc), it is advisable to perform the following operations whenever there is a duty break:
Visual inspection to confirm the good condition of the material; Wipe the dust or dirt that may arise in insulators parts (insulators, switches, transformers, etc.) with a dry cloth. Never use solvents; Verify the correct operation of the mechanisms and interlocks; Verify the correct placement of the cable connectors; Check the tightness of all connections; Apply a very light coat of neutral industrial vaseline (Mobil Special with MoS2) in the male contacts of earthing switch and the electrical contacts in air, having removed the old grease with the help of a cloth impregnated with oil or other nonchlorinated solvent.
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12. REPLACEMENT 12.1 Replacing the Voltage Signalization lamps
To replace the voltage signalization lamps, proceed as presented in the following pictures. No tools are required.
After removing the voltage signalization, disconnect the connection. Connect the voltage signalization again and put it back in its place. If the unit is energized, the indicator will light up immediately.
Connection
12.2 Fuse replacement
To replace the fuses follow the instructions in Chapter 8.10 “Assembling of fuses ”. It is recommended to replace all three fuses.
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12.3 Removing the automatic switch disconnector of the cubicle
To access the cable compartment it is necessary: to open the breaker, then open the isolator, and finally close the earthing switch.
Open the cable compartment access panel Remove the front crossbar (2 screws, wrench 13) Disconnect the earth braid of circuit breaker (1 screw, wrench 13) Disconnect the superior and inferior pole connections (12 screws, wrench 13) Disconnect LV Cabling (Disconnect the low voltage connector and cabling that are connected to terminals) Remove the circuit breaker support on the inside of the cubicle The Circuit breaker is now ready to be removed from the low voltage cabling (with low voltage connector)
Upper connections
Bottom connections
Support
Earth plait
Front crossbar
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12.4 Removing cover mechanism
All the mechanisms replacement operations should be carried out by the EFACEC´s After Sales Support Team. To access the operating switch disconnector or earth switch it is necessary to remove its cover. Remove the Low Voltage compartment panel (to have access to the screws and the cover) Remove the 2 M6 screws Undock cover
To access to the operating circuit-breaker it is necessary to remove its cover. Remove the 2 screws Undock cover
13. SPARE PARTS Following are the recommended spare parts: Lamps for voltage indicator Fuses (if applicable) Opening coil (if applicable)
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