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14

6.4  Cable installation layout 

6.4.1  Installation wiring with enclosure:

For the transformer with protective enclosure, cables in its high-voltage side and low-voltage side can be imported to 
internal part of the enclosure through the top or bottom of the enclosure, which can be connected to the corresponding 
wiring site of the transformer. The cable wiring inside the enclosure can be shown in the following figure. 

LV-SIDE

HV-SIDE

LV-SIDE

HV-SIDE

  Note: 

•  The bending radius of the cable needs noting, to prevent force on end of cable connection.

6. Installation

Summary of Contents for GEAFOL Neo

Page 1: ...1 Operating Manual for Siemens Cast resin Dry Type Distribution Transformer siemens com cn ...

Page 2: ...rds 1 3 Safety Guidelines 2 4 Product Structure 4 5 Transportation Transfer Lifting Handover Storage 7 6 Installation 12 7 Commissioning 18 8 Operation 21 9 Maintenance 23 10 Appendix 25 11 Warranty Instructions 27 12 Customer Satisfaction Questionnaire 28 ...

Page 3: ... code GB T 1094 11 电力变压器 第11部分 干式变压器 GB T 1094 1 电力变压器 第1部分 总则 GB T 1094 2 电力变压器 第2部分 温升 GB T 1094 3 电力变压器 第3部分 绝缘水平 绝缘试验和外绝缘空气间隙 GB T 1094 4 电力变压器 第4部分 电力变压器和电抗器的雷电冲击和操作冲击试验导则 GB T 1094 5 电力变压器 第5部分 承受短路的能力 GB T 1094 10 电力变压器 第10部分 声级测定 GB T 4208 外壳防护等级 IP代码 1 Scope of Application 2 Reference Standards Cast resin dry type transformers are widely used indoors especially in fire hazard areas and un...

Page 4: ...ransformer bus bar and high voltage cable should be maintained to prevent interference of control communication signal e g RS 485 signal line It is forbidden to adjust the tapping under power on condition and the tapping can be adjusted only after the transformer is powered off power off padlock power test discharge grounding After the overhaul dismantle the grounding wire evacuate the personnel f...

Page 5: ...is section aims to help operators avoid safety accidents as much as possible during operation Make sure that no operator performs commissioning or other operations on the transformer body before power on Keep a safe distance At the moment of power on the operator shall maintain an effective and safe distance from the transformer When the transformer needs to be reparied d after tripping or power o...

Page 6: ...l 2 Insulator 3 Siemens logo 4 Nameplate 5 Lifting hole 6 Upper clamping 7 Insulating cylinder 8 Safety sign 9 High voltage tapping 10 High voltage winding 11 Earth terminal 12 Lower clamping 13 Wheels 14 Towing hole 15 High voltage connection tube 16 High voltage terminal 4 Product Structure 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 ...

Page 7: ...e lifting ring 2 Siemens Logo 3 Nameplate 4 Enclosure flank 5 Safety sign 6 Air inlet 7 Door panel 8 Door lock 9 Observation window 10 Position number plate 11 Temperature control system 12 Primary Secondary side marking 13 Air outlet 14 Foundation 15 Enclosure earth terminal ...

Page 8: ...zed Remarks The technical parameters in this picture are standard parameters and do not cover all types of transformers Introduction to technical parameters 1 Manufacturer 2 Siemens brand 3 National Standard GB1094 11 2007 International Standard IEC60076 11 2004 4 Transformer name 5 Type Take SCLB11 2500 10 as an example S Three phase C Cast resin L Aluminum product B Foil winding 11 Performance l...

Page 9: ...k lift transportation 5 Transportation Transfer Lifting Handover Storage Wooden case packing and transportation Warnings Stacking and Extrusion of Transformer Body Wooden Box Transformers are forbidden to be placed horizontally on transport vehicles The direction of the transformers should be the same as that of the vehicles Transport vehicles should avoid sudden braking in the course of moving an...

Page 10: ...f gravity and ensure that no overturning or falling down occurs 5 2 2 If the transformer is packed with wooden pallet support it shall be lifted from the lifting hole of the transformer Or shall be transferred according to fork lift marks as shown below 5 2 3 If there is only the transformer body without packaging it shall be lifted from the lifting hole of the body as shown in the following figure...

Page 11: ...tective enclosure and can only be lifted by slings through the lifting holes of the upper clamping piece The lifting angle must comply with the requirements on the labels affixed beside the lifting holes as shown in the following figure 2 The transformer has a protective enclosure and can be lifted in two ways a If there is a specially designed lifting hole at the top cover of the enclosure it shall...

Page 12: ...ft arm shall be fully extended into the base as shown in the following figure Warnings Pay attention to the elevated height during forklifting to prevent theoverturning or landing due to unstable center of gravity Prevent deformation of the enclosure during transfer which caused by external force Note Do not push or pull the high voltage winding or the delta connection tube Avoid the collision agai...

Page 13: ...epresentative who is in charge of such matters Please refer to the following steps to check the transformers delivered on site with the carrier and make relevant records a Check the outer packing of the transformer such as wooden box and the plastic hood which shall be in good condition b Check the transformer model and the quantity and documentation which shall be correct and complete according t...

Page 14: ...wer end is V W U Attention should be paid to correct phase sequence when connecting high voltage cables Fasteners shall be used during the connection and loosening preventive measures shall be taken to fix the cable at the terminal of the high voltage connecting rod of the transformer At the same time it is necessary to ensure that the cable is reliably supported so as to avoid obvious external for...

Page 15: ...um composite foil cupal shall be installed between the low voltage terminal of the transformer and the cable or between the low voltage terminal of the transformer and the bus bar Please refer to the figure below Warnings The reliable connection of cables and busbars shall be ensured to avoid obvious external force acting on the connection of transformer In the installation of copper aluminium comp...

Page 16: ...be imported to internal part of the enclosure through the top or bottom of the enclosure which can be connected to the corresponding wiring site of the transformer The cable wiring inside the enclosure can be shown in the following figure LV SIDE HV SIDE LV SIDE HV SIDE Note The bending radius of the cable needs noting to prevent force on end of cable connection 6 Installation ...

Page 17: ...m copper contact area needs to be painted to protect the entire contact area especially the contact edges If this moisture proof measure is not taken aluminum copper composite foil cupal shall be installed between the contact surfaces so that the aluminum surface is connected with the aluminum bar and the copper surface is connected with the copper bar 6 5 2 Bolt requirements Corrosion resistant p...

Page 18: ... the table below Torque values for busbar connections and tap connections Bolt Torque Nm Ungreased M6 10 M8 20 M10 45 M12 75 M16 140 6 6 Electrical safety clearance Sufficient space must be ensured around the transformer to ensure a smooth connection of the cable and the necessary electrical distance Minimum clearance value for flashover protection is as bellow Figure 4 The high voltage side is the ...

Page 19: ...pment Effective value Rated lightning impulse withstand voltage LI Minimum clearance value List 1 List 2 a b c d kV kV kV mm mm mm mm 12 75 120 50 40 24 95 160 80 50 24 125 220 100 70 36 145 270 120 90 36 170 320 160 110 See IEC 60071 If there is a high voltage tap on this side parameters of column a shall apply to column b Otherwise column c applies ...

Page 20: ... setting methods c To verify the function of the temperature controller at room temperature the relevant functional parameters need to be changed d After commissioning the temperature controller settings need to be restored to the default parameters Warnings Unless the wiring is equipped with the protection switch it is forbidden to supply power to the temperature controller directly from the low ...

Page 21: ... clearance requirement refer to 6 6 7 2 6 Clean the transformer to ensure that no foreign matter remains in the transformer see 9 1 7 1 3 Electromagnetic lock The electromagnetic lock as shown below is installed on the protective enclosure of the transformer if electromagnetic lock is required in the contract to realize the joint defense requirements of the equipment Electromagnetic locks with dif...

Page 22: ...esistance is not less than 2 MΩ a voltage can be applied to the low voltage side of the transformer and the transformer can be dried by no load heating If the insulation resistance value is less than 2 MΩ it can be dried by air drying or baking with heat lamp 7 3 4 Applied withstand voltage test The withstand voltage strength of the transformer is tested The on site tested withstand voltage value ...

Page 23: ...s but this phenomenon will soon disappear This is due to physical reasons and will not affect the safe operation of the transformer so it is not a product defect 8 3 There is inrush current when the transformer is switched on and the peak value can reach 6 8 times of rated current The setting value of current quick protection for the transformer shall be larger than the peak value of inrush curren...

Page 24: ... ambient temperatures of 40 ºC 30 ºC 20 ºC 10 ºC 8 6 The three phase voltage current and temperature values shall be recorded periodically during the operation of the transformer so that the historical data of the transformer can be consulted in case of overhaul or fault 8 Operation Note Above are the overload curves of the transformer under natural cooling condition The design of overload capacit...

Page 25: ...ions Each year or after maintenance Torque wrench According to the torque table 4 Check correct tapping connections and bolt tightening Each year or after maintenance Torque wrench According to item 8 1 and torque table 5 Check grounding condition of transformer body and enclosure Each year or after maintenance Torque wrench and visual inspection According to the torque table 6 Check whether tempe...

Page 26: ... fixed tightly and there is resonance Bus bar enclosure board and transformer base are well fixed There are unclamped free ends in the iron core or clamping parts and there are high frequency vibrations during the excitation of the iron core resulting in abnormal noise Check the fastening core and clamping piece and press the free end tight with insulating material Within the same power distribution...

Page 27: ...ower clamp 4 High voltage connecting rod 5 Insulating cylinder 6 Upper iron yoke 7 Neutral bar 8 Low voltage winding 9 High voltage winding 10 Upper clamp 11 Fixed screw Disassembling diagram of cast resin transformer body Remarks The picture is a standard legend and does not cover all types of transformers ...

Page 28: ...oltage outlet cover Top cover high voltage side assembly Stiffening ribs door pillar Column outer corner assembly Crossbeam upper end of door assembly Crossbeam lower end of door assembly Crossmember front and rear of bottom assembly Crossbeam top left and right assembly Crossbeam top cover support assembly Crossbeam front and rear of top assembly Crossmember right and right of bottom assembly Sti...

Page 29: ...g installation and storage 5 Damage caused by improper manual operation or circuit system factors during commissioning and operation 6 Damage caused by force majeure such as lightning strike flood fire earthquake and other natural disaster Notes Our company can provide paid maintenance services for products not covered under the warranty policy III Maintenance Mode When you find the fault please call...

Page 30: ...satisfied Product integrity on arrival Handling of problems quality problem solving response to complaints Appearance quality of product body Appearance quality of product enclosure Service initiative On site safety consciousness of service personnel Communication skills of service personnel Professional level of service personnel Your rating on overall performance of our products and services 10 p...

Page 31: ...29 ...

Page 32: ...s Siemens Energy Management Customer Service Center Service Hotline 400 070 5500 Siemens Transformer Guangzhou Co Ltd Contact information of the after sale service E mail allen cao siemens com hongjian zheng siemens com Tel 86 20 6266 3406 6266 3446 2019 06 V1 欢迎扫码了 解西门子配 电设备与系 统信息 ...

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