TRANSFORMER FITTINGS & ACCESSORIES

Transcription

1 TRANSFORMER FITTINGS & ACCESSORIES CONTENTS 1. Low Voltage transformer bushing clamps TOGA type clamps TOGA 1 type clamps TOGA 2 type clamps TOGA 3 type clamps TOGA 4 type clamps TOGA 5 i TOGA 6 type clamps TOGA 7 type clamps TOGA 8 type clamps MK type clamps MK 1 type clamps MK 1A type clamps MK 1B type clamps MK 2 type clamps MK 3 type clamps Angled MK 4 type clamps MK 5 type clamps Medium Voltage ZGU OP i ZGU type transformer bushing clamps ZIP 40/95 bushing clamp Insulating covers OZT (TOGA clamps) type insulating covers OZ MK (MK clamps) type insulating covers OSOP type insulating covers (for MV surge arresters) OIP-2, OIP-3 type bushing covers & OIN type spark gap cover Extension arms & vibration dampers UM/BOP/TOGA 1-4 type (low voltage surge arrester s) extension arm UM/SBK type (medium voltage surge arrester s) extension arm UM/BOP/TOGA 5 type (low voltage surge arrester s) extension arm for TOGA UM/K type capacitor extension arm Transformer vibration dampers WOT type vibration dampers WPK type vibration dampers... 32

2 Dear Sirs. Transformer bushing fixing is one of the significant areas where specialized equipment should be used to provide: - low losses to conductivity - wide range of applicable cable types - ease of application and accessibility Some of the major faults which have an impact on damage of the transformer come from inapropriate temperature of transformer bushings according to low quality materials used on bushing clamps. It is essential to establish efficient connection between transformer bushing and cables, using right methods. Competent fixing is also crucial to power loss and is strictly connected with materials and manufacturing methods. The most common ways to produce clamps are: casting and drop forging. As castings are often still being affected with many faults, the more efficient and reliable method is drop forging. It may be still more costly on production, it will pay back when fitted on transformer. Our high quality clamps have been designed to meet the most demandful needs and provide simple, functional connection between transformer and output cables. High purity of materials and advanced production used in our products will result in energy saving. According to our research where our product TOGA1 2x240 sq.mm was exposed to I=500A during 3h period at T=20 degrees Celsius, we received following readings: - max voltage loss -?U=5mV - max opeerating temperature = 33 degrees Celsius - resistance = 0, Ohm - dissipated power = 2,5W We are proud to present to you products of high quality and exceptional properties. We kindly invite you to browse our range of products in this catalogue.

3 Low Voltage transformer bushing clamps ISSUE

4 4 ISSUE 2011

5 1.1. TOGA type clamps TOGA 1 type clamps* a) b) c) ~ ~95 D=25 Cable linking connection clamps are intended to be used on transformer bushings of sizes M12 up to M30x2. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Wire assembly screws - brass (tin coated) Suitable for use on cables: Main cables: 2 x 50 up to 240 sq.mm RE,RM,SM, 2 x 300 sq.mm RMC Additional cable (TOGA 1/NS): 1 x 2,5 up to 50 sq.mm Additional cables (TOGA 1): 2 x 2,5 up to 50 sq.mm Technical data: Dimensions as shown on drawing a. Selection chart listed below. TOGA 1 M TOGA 1/N TOGA 1/U TOGA 1/NS extra connectivity fixing 1. TOGA 1 clamps are being sold as a set of :! three pcs. of phase clamps (draw. a ).! one pc. of neutral clamp with earthing strip fixing and no additional connetivity fixing (draw. b TOGA 1/N) 2. We also offer TOGA 1/U earthing clamps (draw. c ) which have an additional connectivity fixings that allow to earth some extra devices fitted on transformer. 3. Another model of earthing clamp is presented on draw. b (Toga 1/NS) where an additional earthing wire (2,5 up to 50 sq.mm) can be fitted using front connectivity fixing. OZT TOGA 1** applicable clamp insulation cover BK 6100 BK 6101 BK 6102 BK 6103 BK 6104 BK 6105 BK 6106 BK 6107 BK 6108 BK 6109 BK 6110 BK 6111 BK 6112 BK 6113 BK 6114 BK 6115 KTM code TOGA-1/M12 TOGA-1/M12/N TOGA-1/M12/U TOGA-1/M12/NS TOGA-1/M16 TOGA-1/M16/N TOGA-1/M16/U TOGA-1/M16/NS TOGA-1/M20 TOGA-1/M20/N TOGA-1/M20/U max kva/ kva max kva/ kva max kva/ kva TOGA-1/M20/NS max kva/ kva TOGA-1/M30 TOGA-1/M30/N TOGA-1/M30/U TOGA-1/M30/NS Bushing screw size M 30 x 2 M 30 x 2 M 30 x 2 I max [A] Transformer type kva kva kva M 30 x kva Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore. * Patent pending ** Technical data and size chart presented on page 19 ISSUE

6 TOGA 2 type clamps* a) ~75 50 b) c) ~42 ~92 D=21 Cable linking connection clamps are intended to be used on transformer bushings of sizes M12 up to M20. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Wire assembly screws - brass (tin coated) Suitable for use on cables: Main cables: 2 x 50 up to 185 sq.mm RE,RM,SM, 2 x 240 sq.mm RMC Additional cable (TOGA 2/NS) : 1 x 2,5 up to 50 sq.mm Additional cables (TOGA 2) : 2 x 2,5 up to 50 sq.mm TOGA 2 TOGA 2/N TOGA 2/NS Technical data: Dimensions as shown on drawing a. Selection chart listed below. 1. TOGA 2 clamps are being sold as a set of:! three pcs. of phase clamps (draw. a )! one pc. of neutral clamp with earthing strip fixing and no additional conectivity fixing draw. b TOGA 2/N 2. We also offer TOGA 2 type clamps presented on draw. c TOGA 2/NS where an additional 2 earthing wire of sizes between 2,5 up to 50 mm can be fitted. OZT TOGA 2** applicable clamp insulation cover Bushing screw size I max [A] Transformer type BK TOGA-2/M12 BK TOGA-2/M12/N BK TOGA-2/M12/NS BK TOGA-2/M16 BK TOGA-2/M16/N BK TOGA-2/M16/NS BK TOGA-2/M20 max kva/ kva BK TOGA-2/M20/N max kva/ kva BK TOGA-2/M20/NS max kva/ kva Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore. * Patent pending ** Technical data and size chart presented on page 19 6 ISSUE 2011

7 TOGA 3 type clamps* a) b) ~85 50 c) ~90 D=25 TOGA 3 TOGA 3/N TOGA 3/A Cable linking connection clamps are intended to be used on transformer bushings of sizes M12 up to M30x2. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Wire assembly screws - brass (tin coated) Suitable for use on cables: Main cables: 2 x 50 up to 240 sq.mm RE,RM,SM, 2 x 300 sq.mm RMC Additional cable (TOGA3/A): 1 x 2,5 up to 50 sq.mm Additional cables (TOGA3): 2 x 2,5 up to 50 sq.mm Technical data: Dimensions as shown on drawing a. Selection chart listed below. 1. TOGA 3 clamps are being sold as a set of :! three pcs. of phase clamps (draw. a ).! one pc. of neutral clamp with earthing strip fixing and no additional conectivity fixing draw. b TOGA 3/N 2. We also offer TOGA 3/A type clamp (draw. c ) which has been equipped with an additional fixing for extra earthing cable intended for use in indoor substations. OZT TOGA 3** applicable clamp insulation cover Nr Cat. katalogowy number BK 6150 BK 6151 BK 6152 BK 6153 BK 6154 BK 6155 BK 6156 BK 6157 BK 6158 BK 6159 BK 6160 BK TOGA-3/M12 TOGA-3/M12/N Bushing screw size I max [A] Transformer type TOGA-3/M12/A TOGA-3/M16 TOGA-3/M16/N TOGA-3/M16/A TOGA-3/M20 TOGA-3/M20/N TOGA-3/M20/A max kva/ kva max kva/ kva max kva/ kva TOGA-3/M30 TOGA-3/M30/N M 30 x 2 M 30 x kva kva TOGA-3/M30/A M 30 x kva Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore. * Patent pending ** Technical data and size chart presented on page 19 ISSUE

8 TOGA 4 type clamps* a) b) ~ ~102 D=25 Cable linking connection clamps are intended to be used on transformer bushings of sizes M12 up to M20.. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Wire assembly screws - brass (tin coated) Suitable for use on cables: Main cable: 1 x 50 up to 240 sq. mm RE,RM,SM, 1 x 300 sq.mm RMC Additional cable : 1 x 2,5 up to 50 sq.mm 1 x 2,5 up to 25 sq.mm Technical data: Dimensions as shown on drawing a. Selection chart listed below. M TOGA 4 TOGA 4/N TOGA 4 clamps are being sold as a set of :! three pcs. of phase clamps (draw. a ).! one pc. of neutral clamp with earthing strip fixing and no additional conectivity fixing (draw. b ) OZT TOGA 4** applicable clamp insulation cover Bushing screw size I max [A] transformer type BK TOGA-4/M12 BK TOGA-4/M12/N BK TOGA-4/M16 BK TOGA-4/M16/N BK TOGA-4/M20 max kva/ kva BK TOGA-4/M20/N max kva/ kva Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore. * Patent pending ** Technical data and size chart presented on page 19 8 ISSUE 2011

9 TOGA 5 & TOGA 6 type clamps* 66 M M 54 Uniwersal, vertical or horizontal cable linking connection clamps are intended to be used on transformer bushings of sizes between M12 to M20 (TOGA 5) and between M12 and M30x2 (TOGA 6). Both clamps have been equipped in a special locking device which allows the clamp to be fitted either vertically or horizontally. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Suitable for use on cables: 2 x 70 up to 240 sq.mm RE, RM, SM, 4 x 240 sq.mm RE, RM i SM. (using fixing doubler) Technical data: Dimensions as shown on drawing shown above. Selection chart listed below. TOGA 5 clamps can be also equipped in earthing extension arm made of galvanized steel which allow fitting earthing strip. TOGA 5 (fixing doubler fitted) fixing doubler for TOGA 5 & TOGA 6 OZT TOGA 5** applicable clamp insulation cover Bushing screw size I max [A] Transformer type BK TOGA-5/M12 BK TOGA-5/M16 BK TOGA-5/M20 max kva/ kva BK TOGA-6/M30x2 M 30x max kva BK TOGA-5/M20+fixing doubler - kva BK TOGA-6/M30x2+fixing doubler M 30x max kva Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore * Patent pending ** Technical data and size chart presented on page 19 ISSUE

10 TOGA 7 type clamps 2 x 30 to 150 sq.mm RE, RM, SM Technical data: Dimensions as shown on drawing. I max - A Transformer type selection: - as for size M12 bushing screw - up to 160 kva, - as for size M16 - up to 200 kva, - as for size M kva. TOGA 7 clamps allow to establish earthing connection using additional extension arm made of galvanized steel. Main body - drop forged brass (tin coated) Clamping screws - stainless steel Cable linking connection clamps TOGA 7 are intended to be used on transformer bushings of sizes M12 up to M TOGA 8 type clamps Suitable for use on cables: 4 x 70 to 300 sq.mm RE, RM, SM technical data: Dimensions as shown on drawing. I max A Transformer type selection: - as for size M 33x2 bushing screw - up to 1000 kva. - as for size M 42x3 - up to 1000 kva. - as for size M 48x3 - up to 1000 kva. Main body - drop forged brass (tin coated) Clamping screws - stainless steel 4-way cable linking connection clamps TOGA8 are intended to be used on transformer bushings of sizes M12 up to M20. Applicable to bushing screw sizes of M33x2, M42x3, M48x3. Cable core description legenda: RE - round, single core; SE - sector, single core. SM - sector, multicore; RMC - round, multicore 10 ISSUE 2011

11 1.2. MK type clamps MK 1 type clamps Rail linking connection clamps MK 1 are intended to be used on transformer bushings of sizes M12 up to M20. Rail connection width < 40mm. Main body - drop forged brass, tin coated. MK 1 clamp is suitable for use on M12 & M16 transformer bushings and it is fitted by M8 clamp screw. Transformer type selection:! M12 bushing screw (l=a) - up to 160 kva! M16 bushing screw (I=A) - up to 200 kva ~ OZ MK 1* applicable clamp insulation cover M BK 6200 BK MK 1/12 MK 1/16 Bushing screw size I max [A] Transformer type DO 160 kva DO 200 kva * Technical data and size chart presented on page 19 ISSUE

12 MK 1A type clamps Rail linking connection clamps MK 1A are intended to be used on transformer bushings of sizes M12, M16 & M20. Rail connection width < 40mm. Main body - drop forged brass, tin coated. Clamping screw - stainless steel. MK 1A clamp is suitable for use on M12, M16, M20 transformer bushings and it is fitted by two M8 clamp screw. Transformer type selection:! M12 bushing screw (I=A) - up to 160 kva! M16 bushing screw (I=A) - up to do 200 kva! M20 bushing screw (I=A) - up to kva 44 8 M BK 6210 BK 6211 BK MK 1A/12 MK 1A/16 MK 1A/20 Bushing screw size I max [A] Transformer type max / kva 12 ISSUE 2011

13 MK 1B type clamps Rail linking connection clamps MK 1A are intended to be used on transformer bushings of sizes M12, M16 & M20. Rail connection width < 40mm. Main body - drop forged brass, tin coated. Clamping screw - stainless steel. MK 1 clamp is suitable for use on M12, M16, M20 transformer bushings and it is fitted by M10 clamp screw. Transformer type selection:! M12 bushing screw (I=A) - up to 160 kva! M16 bushing screw (I=A) - up to do 200 kva! M20 bushing screw (I=A) - up to kva 8 54 M BK 6215 BK 6216 BK MK 1B/12 MK 1B/16 MK 1B/20 Bushing screw size I max [A] Transformer type max / kva ISSUE

14 MK 2 type clamps Rail linking connection clamps MK 2 are intended to be used on transformer bushings of sizes M12, M16 & M20. Rail connection width < 60mm. Main body - drop forged brass, tin coated. Clamping screw - stainless steel. MK 2 clamp is suitable for use on M12, M16, M20 transformer bushings and it is fitted by two M8 clamp screws. Transformer type selection:! M12 bushing screw (I=A) - up to 160 kva! M16 bushing screw (I=A) - up to do 200 kva! M20 bushing screw (I=A) - up to kva OZ MK 2* applicable clamp insulation cover ~ M BK 6220 BK 6221 BK MK 2/12 MK 2/16 MK 2/20 Bushing screw size I max [A] Transformer type max / kva * Technical data and size chart presented on page ISSUE 2011

15 MK 3 type clamps Rail linking connection clamps MK 3 are intended to be used on transformer bushings of sizes M12, M16, M20 & M30x2. Rail connection width < 60mm. Main body - drop forged brass, tin coated. Clamping screw - stainless steel. MK 2 clamp is suitable for use on M12, M16, M20 & M30x2 transformer bushings and it is fitted by two M8 clamp screws. Transformer type selection:! M20 bushing screw (I=A) - up to kva! M30x2 bushing screw (I=1000A) - up to kva OZ MK 3* applicable clamp insulation cover ~ M BK 6225 BK 6226 BK 6227 BK MK 3/12 MK 3/16 MK 3/20 MK 3/30 x 2 Bushing screw type M 30 x 2 I max [A] 1000 Transformer type max kva max kva max kva * Technical data and size chart presented on page 19 ISSUE

16 MK 4 type clamps Rail linking connection clamps MK 2 are intended to be used on transformer bushings of sizes M12, M16 & M20. Rail connection width < 60mm. Main body - drop forged brass, tin coated. Clamping screw - stainless steel. MK 2 clamp is suitable for use on M12, M16, M20 transformer bushings and it is fitted by M8 clamp screw. Transformer type selection:! M12 bushing screw (I=A) - up to 160 kva! M16 bushing screw (I=A) - up to do 200 kva! M20 bushing screw (I=A) - - kva M degrees angled clamp BK 6230 BK 6231 BK MK 4/12 MK 4/16 MK 4/20 Bushing screw size I max [A] Transformer type max / kva 16 ISSUE 2011

17 MK 5 type clamps Rail linking connection clamps MK 2 are intended to be used on transformer bushings of sizes M20 & M30x2. Rail connection width < 100mm. Main body - drop forged brass, tin coated. Clamping screws - stainless steel. MK 2 clamp is suitable for use on M20 & M30x2 transformer bushings and it is fitted by two M10 clamp screw. Transformer type selection:! M20 bushing screw (I=A)- up to kva! M30x2 bushing screw (I=1000A)- up to kva 104 ~ M BK 6237 BK MK 5/30x2 MK 5/20 Bushing screw size M 30x2 I max [A] 1000 Transformer type kva kva ISSUE

18 1.3. ZGU OP & ZGU medium voltage clamps. Main body - brass, tin coated. Clamping screws - stainless steel. ZGU type - medium voltage connection clamps. ZGU OP type - medium voltage connection clamps (additional fixing intended for medium voltage surge arrester). Advantages:! superb conductivity,! rigid body design,! easy to assemble using one Allen key,! no need to apply cable lugs,! ZGU OP type - additional fixing intended for mounting medium voltage surge arrester,! mounting method eliminates any forces which could damage insulation bushing due to overtorque, Extras: As an additional protection to the connection we offer suitable insulation covers which protect it against animal interference. 42mm 2 M12 6kt6 O35 M12 OZ ZGU OP* insulation protective cover M8 6kt6 12,5 M mm 2 M12 6kt6 O35 M12 M8 6kt6 37 M12 OZ ZGU* insulation protective cover 62 BK 6240 BK ZGU ZGU OP Bushing screw size M12 M12 Cable section 70 sq.mm 70 sq.mm Surge arrester fixing N/A M12 * Technical data and size chart presented on page ISSUE 2011

19 1.4. ZIP 40/95 type clamps. Main body - brass, tin coated. Clamping screws - stainless steel. Medium voltage connection clamps (additional fixing intended for medium voltage surge arrester). Extras: As an additional protection to the connection we offer suitable insulation covers which protect it against animal interference. BK 6242 Bushing screw size Cable section Surge arrester fixing ZIP 40/95 M12-M20 70 sq.mm M12-M20 19 ISUUE 2011

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21 2. INSULATING COVERS ISSUE

22 21 ISSUE 2011

23 2.1. OZT type insulation covers for TOGA clamps. 2 layers of PVC 3-6 mm thick. Top layer - black colour (UV resistant). Bottom layer - red (wear indication). Each model has been specially designed to suit applicable clamp (as shown on drawings below). Technical characteristics: Insulation protection: 7000 V/mm Temperature factor/ protection:! 20 C - 3x10 W cm! 70 C - 3x10 W cm Tensile strength : >10MPa Presented insulation covers are intended for use on TOGA clamps and provide protection against short-circuits which may occur by animal interference. Assembly is carried out by synthetic PE screws. Selection criteria: 1. accordingly to clamp type, 2. accordingly to bushing shed s size (mm): O50, O70, O90. Additional criteria: Each of the covers can be supplied as normal type or as enhanced protection version (marked as B ). Ordering example: OZT - 4 O70 B enhanced protection mark bushing shed size clamp type cover type BK 7100 BK 7101 BK 7102 BK 7103 BK 7104 BK 7105 BK 7106 BK 7107 BK 7108 BK 7109 BK 7110 BK 7111 BK 7112 BK 7113 BK 7114 BK 7115 BK 7116 BK 7117 BK 7118 BK 7119 BK 7120 BK 7121 BK 7122 BK 7123 BK 7124 BK 7125 BK 7126 BK Cover type OZT - 1/50 OZT - 1/50 B OZT - 1/70 OZT - 1/70 B OZT - 1/90 OZT - 1/90 B OZT - 2/50 OZT - 2/50 B OZT - 2/70 OZT - 2/70 B OZT - 3/50 OZT - 3/50 B OZT - 3/70 OZT - 3/70 B OZT - 3/90 OZT - 3/90 B OZT - 4/50 OZT - 4/50 B OZT - 4/70 OZT - 4/70 B OZT - 5/50 OZT - 5/50 B OZT - 5/70 OZT - 5/70 B OZT - 6/70 OZT - 6/70 B OZT - 6/90 OZT - 6/90 B Clamp type TOGA 1 TOGA 1 TOGA 1 TOGA 1 TOGA 1 TOGA 1 TOGA 2 TOGA 2 TOGA 2 TOGA 2 TOGA 3 TOGA 3 TOGA 3 TOGA 3 TOGA 3 TOGA 3 TOGA 4 TOGA 4 TOGA 4 TOGA 4 TOGA 5 TOGA 5 TOGA 5 TOGA 5 TOGA 6 TOGA 6 TOGA 6 TOGA 6 Bushing screw size M. 12 or or M16 or or M 30x2 M 30x2 or or M16 or or or or M16 or or M 30x2 M 30x2 or or M16 or or or or M16 or or or or M 30x2 M 30x2 Bushing shed size 50 mm 50 mm 70 mm 70 mm 90 mm 90 mm 50 mm 50 mm 70 mm 70 mm 50 mm 50 mm 70 mm 70 mm 90 mm 90 mm 50 mm 50 mm 70 mm 70 mm 50 mm 50 mm 70 mm 70 mm 70 mm 70 mm 90 mm 90 mm ISSUE

24 2.2. OZ MK type insulation covers for MK clamps. 2 layers of PVC 3-6 mm thick. Top layer - black colour (UV resistant). Bottom layer - red (wear indication). Each model has been specially designed to suit applicable clamp (as shown on drawings below). Technical characteristics: Insulation protection: 7000 V/mm Temperature factor/ protection:! 20 C - 3x10 W cm! 70 C - 3x10 W cm Tensile strength : >10MPa Presented insulation covers are intended for use on TOGA clamps and provide protection against short-circuits which may occur by animal interference. Assembly is carried out by synthetic PE screws. Selection criteria: 1. accordingly to clamp type, 2. accordingly to bushing shed s size (mm): O50, O70, O90. Additional criteria: Each of the covers can be supplied as normal type or as enhanced protection version (marked as B ). Ordering example: OZ - 4 O70 B enhanced protection mark bushing shed size clamp type cover type BK 7201 BK 7203 BK 7205 BK / / / /000 Cover type OZ MK 1/50 OZ MK 2/70 OZ MK 3/90 OZ MK 5/90 Clamp type MK1 MK2 MK3 MK5 Bushing screw size see clamp info see clamp info see clamp info see clamp info Bushing shed size 50 mm 70 mm 90 mm 90 mm ISSUE

25 2.3. OSOP type insulating covers (for use on MV surge arresters). 2 layers of PVC 3-6 mm thick. Top layer - black colour (UV resistant). Bottom layer - red (wear indication). Each model has been specially designed to suit applicable clamp (as shown on drawings below). Technical characteristics: Insulation protection: 7000 V/mm Temperature factor/ protection:! 20 C - 3x10 W cm! 70 C - 3x10 W cm Tensile strength : >10MPa Presented insulation cover is intended for use on MV surge arresters and provide protection against shortcircuits which may occur by animal interference. Assembly is carried out by synthetic PE screws. OSOP BK OSOP 2.4. OIP-2, OIP-3 bushing covers & OIN type spark gap cover. This product has been made using UV resistant, weatherproof, self extinguishing material. Unique construction allows to install the cover only on first shed of bushing, additionaly fixed by cable ties provided. Wiring can be applied trough one of 4 slots on each side of cover. Additionaly this cover can be equipped with spark gap protective cover of OIN type. This product is intended for use on transformer bushings and provide protection against animal and other interferences. Selection criteria: Bushing shed diameter:! OIP to 170 mm! OIP 3 - above170 mm! OIN - uniwersal cover - applicabe to most spark gaps, compatibile with both OIP2 &3. Technical characteristics: Height in total: 260 mm. Operating temperature: -40 C to +70 C. OIP 2 Advantages:! self-extinguishing material,! fault free fixing,! simple but functional,! sturdy construction,! weatherproof,! good mechanical strength. OIN BK 7004 BK 7005 BK 7006 Application OIP 2 OIP 3 OIN MV bushing cover MV bushing cover Spark gap cover Bushing shed size NOTE!: It is highly recommended to use MV surge arresters when spark gaps are removed. Using protective covers with no surge protection may cause severe damage to transformer s bushings. 24 ISSUE 2011

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27 3. EXTENSION ARMS & VIBRATION DAMPERS ISSUE

28 26 ISSUE 2011

29 3.1. UM/BOP/TOGA 1-4 type (low voltage surge arrester s) extension arm. Aluminium pipe, PVC coated. Rigid extension arm allow to fix low voltage surge arresters on bushing clamps. Advanages:! easy to mount method intended for coupling LV surge arresters directly to bushing clamps,! extension arm gives an additional protection to the transformer body in case of LV surge arrester discharge,! fully insulated extension arm provides an extra protection against animal interference,! UV retardant, weatherproof, temperature resistant. NOTE! This product in beeing currently sold together with LV surge arresters: BOP.../5 - (fr;z) BOP.../5 - (fr;p) BOP-R.../5 - (fr;z) BOP-R.../5 - (fr;p) LV surge arrester Extension arm UM/BOP/TOGA 1-4 TOGA 2 type clamp BK UM/BOP/TOGA UM/SBK type (medium voltage surge arrester s) extension arm. Hot dip galvanized steel. Rigid extension arm allows fixing MV surge arresters directly to transformer body. : ISSUE

30 3.3. UM/BOP/TOGA 5 type (low voltage surge arrester s) extension arm for TOGA 5. This extension arm is intended for coupling BOP type arresters directly to TOGA5 type clamp. Technical characteristics: Main body is made of hot dip galvanized steel, partially covered in PVC insulation. : UM/K type capacitor extension arm. Hot dip galvanized steel. Fixing for mounting capacitors on transformer s body. : ISSUE 2011

31 3.5. Transformer vibration dampers. Vibration dampers are intended for use on reduction of vibration and noise of transformer. Specially designed construction and materials provide an excellent attenuation to transformer s operational vibrations WOT type vibration dampers. Construction characteristics: Aluminium body, all other steel elements are hot dip galvanized. Fitting screw is also a height adjustment device. Installation of non-wheeled transformers. Application method: Transformer should be lifted by apropriate device and lowered onto vibration dampers. It is highly recommended to fix the dampers to the floor. Technical data of WOT type vibration dampers footing diameter footing height fitting screw height in total height adjustment - max height - min height WOT nominal load withstand vertical stiffness nominal operational temperature 16 kn 1200 kn/m -20 C 160 C WPK BK WOT ISSUE

32 WPK type vibration dampers Construction characteristics: Aluminium body, damping insert of high ant-vibration properties. Installation of wheeled transformers. Application method: Transformer should be lifted by apropriate device and lowered onto vibration dampers. It is highly recommended to fix the dampers to the floor. Selection criteria: 1. transformer wheel diameter: - up to 120 mm - WPK 1, - above 120 mm - WPK 2 2. Nominal withstand load: - up to 9 kn (WPK x/9) - between 9-12 kn (WPK x/12) Ordering example: WPK-1/12 : (transformer wheel diameter 120 mm; nominal withstand load up to 12 kn. WOT WPK WPK 1 & 2 type vibration dampers. Technical characteristics Nominal withstand load 12 kn Vertical stiffness Nominal operational temperature 1000 kn - 20 C 160 C Nominal withstand load 9 kn Vertical stiffness Nominal operational temperature 800 kn - 20 C 160 C BK 8310 BK 8311 BK 8312 BK 8313 Nominal load WPK-2/9 WPK-2/12 WPK-1/9 WPK-1/12 9 kn 12 kn Nominal load 9 kn 12 kn ISSUE