SM6. instructions for use. QMB cubicles. MV distribution factory built assemblies at your service. Anglais

Transcription

1 SM6 Anglais MV distribution factory built assemblies at your service instructions for use QMB cubicles

2 foreword... 3 symbols and conventions... 3 as per iso contact the Schneider Electric service unit for diagnosis and advice 3 4 distribution rules... safety rules general description... 5 QMB cubicle for bottom right connection... 5 QMB cubicle for bottom left connection... 5 handling instructions... 7 cubicle identification... accessories list weight... dimensions handling using slings... handling using a forklift storage... 9 installation and operation recommendation installation instructions preparing the cubicles for switchboard assembly assembling the switchboard... securing to the floor layout in the substation... fitting the busbars after installing the cubicles in their operating 14 location... cable entry for connection of low voltage auxiliaries fitting the earth bars... storing the operating lever fitting fuses in a QMB cubicle start up instructions checks before energising... operating test before energising energising the lower busbars operating instructions manual operation and position indication fuse indications on the cubicles... padlocking keylocks... operating safety maintenance instructions preventive maintenance, cleaning instructions and power---up corrective maintenance... replacing a voltage indicator block options... trouble-shooting chart spare parts... recovery of SF6 gas at end of life EN revision : 01 1

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4 foreword symbols and conventions Caution: you will find all the symbols below throughout the document, indicating the hazard levels depending on the different types of situation. DANGER as per iso DANGER: failure to follow this instruction will result in death or serious injury. WARNING as per iso WARNING: failure to follow this instruction may result in death or serious injury. CAUTION as per iso CAUTION: failure to follow this instruction may result in injuries. This alert signal can also be used to indicate practices that could damage the SM6 unit. INFORMATION-ADVICE We draw your attention to this specific point EN revision : 01 3

5 contact the Schneider Electric service unit for diagnosis and advice Call your sales representative who willputyouincontactwith the closest SCHNEIDER ELECTRIC group service centre. You can log on to: electric.com distribution rules The aim of this publication is to enable the SM6 unit to be installed correctly. This document is not a commercial document. It is a strictly technical document drawn up by Schneider Electric. safety rules CAUTION WARNING All the operations described below must be performed in compliance with applicable safety standards, under the responsibility of a competent authority. Thecontractormustbecertified and authorised to manipulate and perform work on the SM6 unit. CAUTION Only undertake the work after having read and understood all the explanations given in this document. If you have any difficulty complying with these rules, please contact Schneider Electric EN revision : 01

6 general description QMB cubicle for bottom right connection 1 : low voltage compartment 2 : upper busbar compartment 3 :operatingmechanism compartment 4 : switchgear compartment: switch and earthing switch 5 : lower busbar connection and fuse compartment A : upper busbar connection pads B :voltage indicator C :lower busbar connection and lower field distributors D : capacitive divider E : inspection windows F : front panel G: indication of switch opening by blown fuse H :fuses J : earth bar connection pad J 2 A 4 5 H C D 1 3 B G E F QMB cubicle for bottom left connection 1 : low voltage compartment 2 : upper busbar compartment 3 :operatingmechanism compartment 4 : switchgear compartment: switch and earthing switch 5 : lower busbar connection and fuse compartment A : upper busbar connection pads B :voltage indicator C :lower busbar connection and lower field distributors D : capacitive divider E : inspection windows F : front panel G: indication of switch opening by blown fuse H :fuses J : earth bar connection pad J 2 A 4 5 H C D 1 3 B G E F EN revision : 01 5

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8 handling instructions cubicle identification A D2 D3 B E D1 C A : indicator plate (option) (for customer use) B :characteristics and designation C :manufacturer s name plate E : motorisation plate (option) Serial number D1 :riveted to the operating mechanism compartment cover D2 :glued to the back of the low voltage compartment cover D3 :glued to the upright of the frame accessories list supplied with the cubicle Switchboard accessories : (may vary depending on the cubicles making up the switchboard) 1operatinglever 2 end panels 1 bag of nuts and bolts for the end panels 1 wall clearance angle-iron Cubicle accessories : 2 bags of field distributors for busbars >12kV bags2: or 2 bags of fastening accessories for busbars ± 12 kv bag S6: earthbar 1setofbusbars 1 bag of intercubicle connection accessories bag S1: weight 130 Kg. Never attempt to move the cubicle by exerting force on the control panel EN revision : 01 7

9 dimensions (in mm) handling using slings L 60 MAXI L = 920 mm mini handling using a forklift EN revision : 01

10 storage EN revision : 01 9

11 70 C C EN revision : 01

12 installation and operation recommendation switchgear ageing withstandinanmv substation depends on 3 main factors H The need for proper implementation of connections: the new cold slip --- on and retractable technologies offer ease of installation, thereby promoting withstand over time. Their design enables operation in polluted environments with harsh atmospheres. H Theinfluenceoftherelative humidity factor: installation of heating resistors is essential in climates with high relative humidity and large temperature differences. H Ventilation control: the grids must be sized according to power loss in the substation. These grids must only be placed near the transformer, so as to prevent air circulating on the MV switchboard. operation We strongly recommend that you carry out at regular intervals (at least roughly every 2 years) afew operating cycles on the switching devices. Outside normal operating conditions (between -- 5 C and 40 C, absence of dust, corrosive gas, etc.), we recommend that you contact our Groupe Schneider Electric service centre in order to examine the measures to be taken to ensure proper installation operation. Our service centre is at your disposal at all times: H To conduct an installation diagnosis. H To suggest the appropriate maintenance operations. H To offer you maintenance contracts. H To suggest adaptations EN revision : 01 11

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14 installation instructions preparing the cubicles for switchboard assembly Delivery state: Earthing switch position upon delivery: closed :bolt+washer : bolt+washer+nylstop nut B A D C Remove the panel nylstop screw. Remove the front panel A and then the skids B. (the bolts cannot be re-used) Remove the low voltage compartment front plate C and the lifting rings D. G H Remove top plate G. (4bolts) Remove top plate H (6 bolts). (cubicle without additional LV enclosure) assembling the switchboard nuts and bolts in bag S1: (HM6 x 16 bolts only) (the remaining nuts and bolts are for the earth bars) K L Join the various cubicles. bolt mounting direction: K: leftcubicle L: right cubicle EN revision : 01 13

15 securing to the floor (nuts and bolts not included) ,3x12, layout in the substation 100mm* 100mm* QMB QMB 20mm 20mm Switchboardinstalledtotheright of a wall. (*) minimum clearance for trouble-free operation. Switchboard installed to the left of a wall. fitting the busbars after installing the cubicles in their operating location Tools: 1 torque wrench. (1 to 50 Nm) 11/4---3/8adapter. 16mmextensionfitting. 1 6 mm male hexagonal fitting or 1 6 mm female hexagonal socket. Note: example for connection to a QMB with a bottom right outgoer. QMB GBM Upper busbar connection. Tightening torque: 28 Nm. QMB GBM Lower busbar connection. Tightening torque : 28 Nm EN revision : 01

16 Version ± 12 kv. bag S2: Mounted without field distributors. Version > 12 kv. bag S2: Field distributor positioned correctly. H Field distributor positioned incorrectly. (risk of damage) Refit top plate H (6 bolts). (nuts inside the cubicle) G Refit top plate G (4 bolts) EN revision : 01 15

17 cable entry for connection of low voltage auxiliaries Note: the LV auxiliary wiring diagrams aregluedtotheinsideofthelv compartment. A Cable entry to the auxiliary terminal is via two holes A. Remove the knock-outs. Cubicle equipped with an LV cable trough. (option) Proceed in the same manner after removing the trough top plate. Refit the LV compartment cover, respecting the indications of each of the cubicles. fitting the earth bars Bag S1 : Connect the earth bars together. (HM8 x 30 bolts) Earth the substation frames in either of these two ways EN revision : 01

18 storing the operating lever Fix the operating lever clamp on the wall at a convenient location. (screw not supplied) fitting fuses in a QMB cubicle Reminder : Check the condition of the fuses before fitting them. Lift the cover of the upper field distributor with the top of the fuse. Insert the bottom of the fuse all the way into the lower annular contact Nota : -- When changing a fuse, change all 3 fuses. -- Do not re--used fuses that have already been used. Then fit the top of the fuse in the upper contact and check that the field distributor cover is properly closed. We advise against holding the fuse in the middle EN revision : 01 17

19 with the grain assembly Fit striker type fuses that actuate the opening of the switch when they blow. Percuteur Striker pin Schlagstift Percussore The striker end of the fuse is marked. Thefusecharacteristicsand direction of mounting are printed on the fuse. Turn the fuse so that the label is in front. (striker at the top) transformer protection Fuse ratings for SM6 protection units such as the QMB depend, among other things, on the following criteria: H service voltage. H transformer rating. H fuse technology (manufacturer). Different types of fuses with medium loaded striker may be installed: ---Solefuse fuses as per standard UTE NFC Fusarc fuses as per IEC recommendation and DIN dimensions Example: for the protection of a 400 kva transformer at 10 kv, select either Solefuse fuses rated 43 A or Fusarc fuses rated 50 A. Please consult us on installation Fuse dimensions Soléfuse (UTE standard) Fuse dimensions Fusarc (DIN standard) Ø45 Ø Ø L rated voltage (kv) rating (A) 7,2 6,3 à , ,3 à 63 2 weight (Kg) rated voltage (kv) rating (A) L (mm) (mm) weigh t(kg) 7, ,3 12 6,3 à ,4 80 à ,3 24 6,3 à ,4 50 à EN revision : 01

20 selection table (rating in A, no overload, C <θ <40 C ) type of fuse service voltage (kv) transformer rating (KVA) UTE NFC standards: , Solefuse General case, UTE NFC standard Solefuse Fusarc * * * * 160* 200* * 125* 160* * 125* 160* * 125* * rated voltage (kv) Please consult us for overloads and operation over 40 C. (*) please, consult. your nearest groupe Schneider Electric service centers EN revision : 01 19

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22 start up instructions checks before energising H check that nothing has been left in the connection compartment. H for all phases, check that the fuse has been properly fitted and that the field distributor covers have been properly closed. Refit the front panel, and the nylstop screw. operating test before energising See operating instructions section. Operate the earthing switch and the switch several times. energising the lower busbars As soon as the busbars have been energised, the voltage indicator lamps should go on EN revision : 01 21

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24 operating instructions manual operation and position indication Position the lever as indicated for downward (opening) operations. Position the lever as indicated for upward (closing) operations. Opening the earthing switch. Closing the switch. Opening the switch. Closing the earthing after checking the voltage status. (see voltage indicators) EN revision : 01 23

25 fuse indications on the cubicles Fuses OK. (white indicator) One or more fuses not OK. (red indicator) padlocking Padlocking of motor mechanism. (option) Lock out the motor mechanism using a padlock before opening the switch. The motor mechanism can be locked in or out using the padlocks. Padlock the switch in open or closed position using 1, 2 or 3 padlocks. (dia. 8 mm) Padlock the earthing switch in open or closed position using 1, 2 or 3 padlocks. (dia. 8 mm) Padlocking the front panel EN revision : 01

26 keylocks See the instruction manual for installation and operation of keylocks. (réf : ) operating safety The front panel can only be removed or fitted if the earthing switch is closed EN revision : 01 25

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28 maintenance instructions preventive maintenance, cleaning instructions and power --- up If necessary: contact the Schneider Electric group service centre. We strongly recommend that you carry out at regular intervals (at least roughly every 2 years) afew operating cycles on the switching devices. CAUTION Never lubricate the disconnector operating mechanism. If necessary: contact the Schneider Electric group service centre. In normal operating conditions (temperature between C and40 C) no special maintenance is required. CAUTION Never use solvents and alcohol. We recommend that you inspect each compartment (cable, fuse, busbar)* at regular intervals according to environmental conditions. If the insulating parts are dusty, that you remove the dust using a dry cloth. example : In harsher conditions (aggressive atmosphere, dust, temperature less than C or greater than 40 C) consult the nearest Schneider Electric service centre EN revision : 01 27

29 corrective maintenance Replacing the fuses: H the cubicle must be de-energised. H the switch must be open. H the earthing switch must be closed. H Unscrew panel nylstop screw. H open the front panel for access to the fuses. Important: standard IEC states that all three of the MV fuses should be changed whenever one of them blows. First remove the top of the fuse. Then lift the fuse out of its bottom support and remove it completely. To fit the new fuses, refer to the sectiononfittingfusesinaqmb cubicle. replacing a voltage indicator block Pull out the voltage indicator block. the switchboard can remain energised options (please consult us) H H H H H keyed interlocks. release coils. auxiliary contacts. motor mechanism. 50 W heating element. H enlarged LV compartment or additional LV enclosure. H contact for fuse blown indication. H undervoltage or shunt type opening release EN revision : 01

30 trouble-shooting chart H voltage indicator not illuminated H check that the incoming cables are live H H H H check the voltage indicator block check that the switch is closed check that the fuses have been fitted check that the fuses are in working order H front panel cannot be opened or closed H check that the earthing switch is closed H check that the panel nylstop screw is unscrewed H earthing switch cannot be operated H check that the switch is open H switch cannot be operated H check that the earthing switch is open motor mechanism (option) (*) operation is guaranteed for rated voltage ± 15%. H electrical operation impossible H check the LV fuses (CIP2) S13 = switch lever insertion hole S14 = earthing switch lever insertion hole H (*) manual operation impossible following an electrical closing cycle for a voltage level less than ---15% rated value H (*) insertion of lever impossible following an electrical closing cycle for a voltage level greater than +15% rated value H check electrical interlocks S (lever insertion) H check that the earthing switch operating shaft has reached its end position H check that contact S14 has not disabled the power supply and re-adjust if necessary H check the configuration of the CIP1 subassembly (see diagram) H use the operating lever to apply a torque in the closing direction until the end position is reached; manual operation should now be possible H if possible, carry out an electrical operation, using a backup power source if necessary H to allow insertion of the operating lever, push the back of the switch shaft in the closing direction using a large screwdriver; (for safety reasons, remember to first lock out the electrical operating mechanism; if necessary, push up and hold the locking blade that actuates contact S13) spare parts H fuses ( UTE or DIN ). H voltage indicator. (for other parts, please consult us: see groupe Schneider Electric services center) EN revision : 01 29

31 recovery of SF6 gas at end of life for disconnector cubicle The SF6 must be removed before any dismantling operation can be carried out in compliance with the procedures described in IEC and according to the following instructions. The gas must be treated in compliance with IEC H volume of gas to be recovered: 35 litres H internal gauge pressure: 40 kp A NB : SF6 gas recycling at the end of circuit-- breaker life, refer to its instruction for use. Remove the cover (A) from the control cabinet. control cover access B Remove the control cover (B). Remove the 3 screws retaining the operating mechanism. Cut the wiring to remove the operating mechanism. Drill 2 holes in the filler valve safety cap 4 mm, centreline 20 mm, max. depth 4 mm EN revision : 01

32 CAUTION pump the gas for at least 15 minutes. C Using a spanner wrench, remove the safety cap from the valve. Connect the special pumping equipment (C) EN revision : 01 31

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34 group Schneider Electric service centers are there for: engineering and technical assistance start-up training preventive and corrective maintenance adaptation work spare parts Call your sales representative who will put you in touch with your nearest group Schneider Electric service centers. Schneider Electric Industries SAS 89, boulevard Franklin Roosevelt F Rueil--- Malmaison (France) Tel:+33(0) electric.com EN revision : 01 As standards, specifications and designs change from time to time, please ask for confirmation of the information given in this publication. Conception, rédaction: Service Documentation Technique T&D Edition du : 24/04/2008