Based on
Contract
ProjectOIC-Vale
Prep.
M. Meyer
Date 04.11.09 Ref.1-2019660
Appr. Approved File: OIC-MM-0020-E-61001_R0_132 kV_Swg_Er&Maint.doc
Doc. kind
Manual
Doc.=0020AM01
ItemEquipment
132 kV GIS Erection & Maintenance
des. des. © 2008, ABB Switzerland Ltd Resp. dept.ATBPE
Document number Lang. Rev. ind. Page
1
ABB Switzerland Ltd
MM-0020-E-61001
en 0
No. of p.208
OMAN INDUSTRIAL COMPLEX PROJECT
P0220
Vale N0MM-0020-E-61001
PAGE1 / 208
TITLEOMAN INDUSTRIAL COMPLEX – PHASE I
Manual
132 kV GIS Erection & Maintenance
CONTRACTED N0
0015/2008
Rev.
0
REVISIONS
ISSUE TYPE IT A - PRELIMINARY C - FOR INFORMATION E - FOR CONSTRUCTION G - AS BUILT B - FOR PROPOSAL D - FOR QUOTATION F - AS PURCHASED H – CANCELLED
Rev. IT
Description
Prep. Appr. Chk. Aut.
Date
1
Main List of Documents
Erection and Maintenance
1 ¤ Delivery 1.1 Transport. . . 1HDG 918 706 A 1.2 Receiving Inspection. . . 1HDG 518 100 1.3 Storage . . . 1HDG 518 101 A 1.4 Building requirements. . . 1HDG 918 707 A 2 ¤ Installation
2.1 Installation of the GIS . . . 1HDG 518 200 L 2.2 Conversion Tables. . . 1HDG 518 015 C 2.3 Earthing. . . 1HDG 918 733 D 2.4 Local Control Cubicle . . . 1HDG 918 724 B 2.5 Coupling of Feeders . . . 1HDG 918 726 B 2.6 Surge Arrester . . . 1HDG 918 730 C
3 ¤ Commissioning
3.1 Tests prior to Commissioning . . . 1HDG 918 740 I 3.2 High Voltage Test of the Main Circuits. . . 1HDG 918 742 K
4 ¤ Equipment and Functional Descriptions
4.1 Gas Density Relay . . . 1HDG 518 418 B 4.2 Circuit Breaker. . . 1HDG 918 750 G 4.3 Circuit Breaker Operating Mechanism Type HMB. . . 1HDG 518 425 D 4.4 Circuit Breaker Operating Mechanism HMB-1 . . . 1HDG 918 753 D 4.5 Disconnector / Earthing Switch. . . 1HDG 918 747 E 4.6 Earthing Switch with Short Circuit Making Capacity . . . . 1HDG 918 757 E 4.7 Separate Current Transformer . . . 1HDG 918 758 A 4.8 Integrated Current Transformer . . . 1HDG 518 410 A 4.9 Inductive Voltage Transformer VT1 . . . 1HDG 518 424 A 4.10 Surge Arrester Type AZ0 . . . 1HDG 518 575 C 4.11 Anti-Condensation Heater . . . 1HDG 518 451 A 4.12 Integrated Control Cubicle. . . 1HDG 918 762 B 4.13 Control Cubicle (Indoor). . . 1HDG 518 416 4.14 Wiring System of the Control Cubicle . . . 1HDG 518 406 A 4.15 Heat Balance of the Control Cubicle . . . 1HDG 518 407 B 4.16 Power Demand Local Control Cubicle. . . 1HDG 518 409 F 4.17 Functional Description . . . 1HDG 918 764 B 4.18 Control System: Conventional Substation Automation . . 1HDG 518 412 D
2
5 ¤ Service
5.1 Maintenance of the GIS . . . 1HDG 518 500 5.2 SF6 Gas Moisture Filter . . . 1HDG 918 781 D
5.3 Control Devices . . . 1HDG 518 521 E 5.4 Circuit Breaker. . . 1HDG 918 786 C 5.5 Disconnector / Earthing Switch. . . 1HDG 918 783 I 5.6 Earthing Switch with Short Circuit Making Capacity . . . . 1HDG 918 784 D 5.7 Troubleshooting. . . 1HDG 518 510 5.8 Disposal of Equipment Component Parts . . . 1HDG 918 785 C
ToC 1
Erection and Maintenance
Content
1 ¤ Delivery . . . 1-1 1.1 Transport . . . 1.1-1 1.1.1 Packaging . . . 1.1-1 1.1.1.1 Packaging requirements . . . 1.1-1 1.1.1.2 Types of packaging. . . 1.1-1 1.1.1.3 Container data. . . 1.1-2 1.1.1.4 Environmental factors . . . 1.1-2 1.1.1.5 Preservation. . . 1.1-2 1.1.1.6 Sealing of equipment . . . 1.1-2 1.1.1.7 Packing and unpacking of equipment . . . 1.1-3 1.1.1.8 Securing of equipment . . . 1.1-3 1.1.1.9 Shipping marks . . . 1.1-3 1.1.2 Shipping . . . 1.1-4 1.1.2.1 Loading and lifting facilities . . . 1.1-4 1.1.2.2 Means of transportation . . . 1.1-4 1.1.2.3 Forces and stresses during transportation . . . 1.1-4 1.1.3 Inspections. . . 1.1-5 1.1.4 Irregularities . . . 1.1-5 1.1.5 Standards and regulations . . . 1.1-6 1.2 Receiving Inspection . . . 1.2-1 1.3 Storage. . . 1.3-1 1.3.1 Packing. . . 1.3-1 1.3.2 Storage Requirements . . . 1.3-1 1.3.3 Classification . . . 1.3-1 1.3.4 Parts and Material. . . 1.3-3 1.3.5 Checks . . . 1.3-5 1.4 Building requirements. . . 1.4-1 1.4.1 Static and dynamic loads. . . 1.4-1 1.4.2 Building Requirements and Dimensions . . . 1.4-3ToC 2
2 ¤ Installation. . . 2-1 2.1 Installation of the GIS . . . 2.1-1 2.1.1 Preparation of the Installation Area . . . 2.1-1 2.1.2 Cleaning . . . 2.1-2 2.1.3 Flange Connections . . . 2.1-3 2.1.4 Tightening Torque for Bolts . . . 2.1-4 2.1.5 Filling of Gas Compartments . . . 2.1-4 2.2 Conversion Tables . . . 2.2-1 2.3 Earthing . . . 2.3-1 2.3.1 Earthing of the GIS Bays. . . 2.3-2 2.3.2 Dimensioning. . . 2.3-2 2.3.3 Installation of the GIS Earthing. . . 2.3-3 2.3.4 Local Control Cabinets. . . 2.3-3 2.3.5 Cable Sealing End . . . 2.3-4 2.3.6 Busduct Connections . . . 2.3-8 2.3.7 Surge Arresters . . . 2.3-9 2.3.8 Example . . . 2.3-9 2.4 Local Control Cubicle . . . 2.4-1 2.4.1 Temporary Storage . . . 2.4-1 2.4.2 Separate Installation of the Local Control Cubicles . . . 2.4-2 2.4.3 Installation of the Local Control Cubicles . . . 2.4-2 2.4.4 Dismounting the Local Control Cubicle. . . 2.4-2 2.4.5 Control Cables. . . 2.4-2 2.4.6 Cable Glands. . . 2.4-3 2.4.6.1 Cable Glands with Earthing Ring . . . 2.4-3 2.4.6.2 Cable Glands without Earthing Sleeve or Earthing Ring 2.4-4 2.5 Coupling of Feeders. . . 2.5-1 2.5.1 Fixing the Base Frame by means of Adjustment Screws 2.5-1 2.5.2 Fixing the Base Frame by means of Fill Plates . . . 2.5-1 2.5.3 Coupling of the Feeder Bays . . . 2.5-2 2.5.4 Mounting and Dismounting of the Transversal Erection
Module . . . 2.5-3 2.6 Surge Arrester . . . 2.6-1
2.6.1 Feeder Module with integrated Disconnector / Earthing
Switch . . . 2.6-2 2.6.2 Surge Arrester on the end of a Busbar . . . 2.6-4 2.6.3 Feeder Module without Disconnector/Earthing Switch. 2.6-5
ToC 3
3 ¤ Commissioning . . . 3-1 3.1 Tests prior to Commissioning . . . 3.1-1 3.1.1 Tools for On-Site Tests . . . 3.1-2 3.1.2 Inspection after Transport . . . 3.1-2 3.1.3 Measurement of Voltage Drop . . . 3.1-2 3.1.4 Check of Gas Density Relays / Gas Density Sensors . 3.1-3 3.1.5 Check of Gas Tightness. . . 3.1-3 3.1.6 Dew Point Measurement . . . 3.1-3 3.1.7 Visual Inspection. . . 3.1-3 3.1.8 Mechanical Functional Tests of the Switching Devices 3.1-5 3.1.9 On-Site Test of the Local Control Cabinet . . . 3.1-5 3.1.10 Default Values for Measurement of Voltage Drop . . . 3.1-6 3.2 High Voltage Test of the Main Circuits . . . 3.2-1 3.2.1 Performance of the Test. . . 3.2-2 3.2.2 Calculation of the Test Burden . . . 3.2-3 3.2.3 Possibilities for Connection of the Test Set . . . 3.2-5 3.2.3.1 Connection to the Voltage Transformer Flange Position 3.2-7 3.2.3.2 Connection to the Busbar . . . 3.2-9 3.2.3.3 Connection to the Outdoor Bushing. . . 3.2-9 3.2.3.4 GIS with Compact Cable Sealing End, Type EHSVS . . 3.2-10 3.2.4 HV Cable-Test at Cable End Unit. . . 3.2-11 3.2.4.1 General. . . 3.2-11 3.2.4.2 Carrying out the High Voltage Test at the Cable . . . 3.2-11
ToC 4
4 ¤ Equipment and Functional Descriptions . . . 4-1 4.1 Gas Density Relay. . . 4.1-1 4.1.1 Design and Operating Principle . . . 4.1-1 4.1.2 Technical Data. . . 4.1-2 4.2 Circuit Breaker. . . 4.2-1 4.2.1 Design of the Circuit Breaker . . . 4.2-2 4.2.2 Operating Mechanism of the Interrupting Chamber . . . 4.2-2 4.2.3 Technical Data. . . 4.2-3 4.2.4 Operating Diagrams . . . 4.2-4 4.3 Circuit Breaker Operating Mechanism Type HMB . . . 4.3-1 4.3.1 Modules of Operating Mechanism Components . . . 4.3-1 4.3.2 Commissioning . . . 4.3-2 4.3.2.1 Slow Switching Operations . . . 4.3-2 4.3.2.2 Storage Module. . . 4.3-2 4.3.3 Optional Adjusting Procedures . . . 4.3-3 4.3.3.1 Adjusting the Operating Speeds . . . 4.3-3 4.3.4 Instructions for the Operation . . . 4.3-4 4.3.4.1 Pump Starts and Checks for Internal Tightness . . . 4.3-4 4.3.4.2 Oil Level . . . 4.3-5 4.3.5 Checks . . . 4.3-6 4.3.6 Spare Parts, General . . . 4.3-7 4.3.7 Tightening Torques for Screws . . . 4.3-7 4.3.8 Utilities . . . 4.3-7 4.3.9 Cleaning agents . . . 4.3-8 4.4 Circuit Breaker Operating Mechanism HMB-1 . . . 4.4-1 4.4.1 Commissioning . . . 4.4-2 4.4.1.1 Manually Operating the Operating Mechanism . . . 4.4-2 4.4.1.2 Putting Out of Service . . . 4.4-3 4.4.2 Technical Data Circuit Breaker Operating Mechanism. 4.4-4 4.5 Disconnector / Earthing Switch . . . 4.5-1 4.5.1 Design and Operating Principle of the Device . . . 4.5-1 4.5.2 Operating Mechanism . . . 4.5-4 4.5.2.1 Manual Operation (Control Voltage Present) . . . 4.5-5 4.5.2.2 Locking . . . 4.5-9 4.5.3 Technical Data. . . 4.5-10 4.5.3.1 Device. . . 4.5-10 4.5.3.2 Operating Mechanism . . . 4.5-11 4.5.3.3 Interlocking Switch . . . 4.5-12 4.5.3.4 Auxiliary Switches. . . 4.5-12 4.5.4 Operating Diagram . . . 4.5-13
ToC 5
4.6 Earthing Switch with Short Circuit Making Capacity . . . 4.6-1 4.6.1 Design and Operating Principle of the Device . . . 4.6-2 4.6.2 Design and Operation Principle of the Drive . . . 4.6-2 4.6.2.1 Manual Operation . . . 4.6-3 4.6.2.2 Locking . . . 4.6-5 4.6.3 Warning signs . . . 4.6-6 4.6.4 Technical Data. . . 4.6-7 4.6.4.1 Switching Device. . . 4.6-7 4.6.4.2 Operating Mechanism . . . 4.6-7 4.6.4.3 Limit Switch . . . 4.6-8 4.6.4.4 Auxiliary Switch . . . 4.6-8 4.6.5 Operating Diagram . . . 4.6-9 4.7 Separate Current Transformer. . . 4.7-1 4.8 Integrated Current Transformer . . . 4.8-1 4.9 Inductive Voltage Transformer VT1 . . . 4.9-1 4.9.1 Design and Operating Principle . . . 4.9-1 4.9.2 Technical Data. . . 4.9-2 4.10 Surge Arrester Type AZ0. . . 4.10-1 4.10.1 Design and Operating Principle . . . 4.10-1 4.10.2 Technical Data. . . 4.10-4 4.11 Anti-Condensation Heater . . . 4.11-1 4.12 Integrated Control Cubicle . . . 4.12-1 4.13 Control Cubicle (Indoor) . . . 4.13-1 4.13.1 Earthing of Protective Conductors . . . 4.13-2 4.14 Wiring System of the Control Cubicle. . . 4.14-1 4.15 Heat Balance of the Control Cubicle . . . 4.15-1 4.16 Power Demand Local Control Cubicle . . . 4.16-1 4.17 Functional Description . . . 4.17-1 4.17.1 Circuit Breaker Control ON . . . 4.17-1 4.17.2 Circuit Breaker Control OFF: . . . 4.17-2 4.17.3 Circuit Breaker Supervision. . . 4.17-3 4.17.4 Hydraulic Pump Control. . . 4.17-4 4.17.5 Disconnector/Earthing Switch Control. . . 4.17-5 4.17.6 Fast Acting Earthing Switch Control . . . 4.17-7 4.17.7 Functions on the Bay Level. . . 4.17-8 4.17.8 Position Indication. . . 4.17-9 4.17.9 Alarm Signalling . . . 4.17-10
ToC 6
4.18 Control System: Conventional Substation Automation . . . 4.18-1 4.18.1 Function List . . . 4.18-1 4.18.1.1 Basic Functions. . . 4.18-1 4.18.1.2 Options . . . 4.18-2 4.18.2 Functional Description . . . 4.18-3 4.18.2.1 Basic Functions. . . 4.18-4 4.18.2.2 Options . . . 4.18-8 4.18.3 Completion of SCADA-System Cubicles . . . 4.18-9
ToC 7
5 ¤ Service . . . 5-1 5.1 Maintenance of the GIS . . . 5.1-1 5.2 SF6 Gas Moisture Filter . . . 5.2-1
5.2.1 Replacing the Bursting Disk . . . 5.2-2 5.2.2 Replacing the SF6 Gas Moisture Filter . . . 5.2-2 5.2.3 Mounting the Bursting Disk . . . 5.2-2 5.3 Control Devices. . . 5.3-1 5.3.1 Maintenance . . . 5.3-1 5.3.2 Inspection. . . 5.3-1 5.4 Circuit Breaker. . . 5.4-1 5.4.1 Inspection of the Circuit Breaker Operating Mechanism 5.4-2 5.4.2 Exchange of the Interrupting Chamber
(3-pole and 1-pole Drive). . . 5.4-3 5.4.3 Commissioning after Overhaul . . . 5.4-6 5.5 Disconnector / Earthing Switch . . . 5.5-1 5.5.1 Inspection of the Operating Mechanism . . . 5.5-2 5.5.2 Maintenance of the Current Path . . . 5.5-3 5.5.2.1 Dismounting the Operating Mechanism . . . 5.5-3 5.5.2.2 Opening of the Transversal Erection Module . . . 5.5-4 5.5.2.3 Dismounting the Busbar from the GIS Bay. . . 5.5-5 5.5.3 Replacement of the Moving and the Fixed Contacts . . 5.5-6 5.5.4 Reinstallation . . . 5.5-8 5.5.5 Removing the Outgoing Disconnector. . . 5.5-9 5.5.6 Reinstallation of the Outgoing Disconnector . . . 5.5-11 5.6 Earthing Switch with Short Circuit Making Capacity . . . 5.6-1 5.6.1 Inspection of the Operating Mechanism Motor . . . 5.6-3 5.6.2 Maintenance of the Current Path . . . 5.6-3 5.6.3 Using the Earthing Switch with Short Circuit Making
Capacity for Measurements . . . 5.6-4 5.7 Troubleshooting . . . 5.7-1 5.7.1 Hydraulic Operating Mechanism of Circuit Breaker . . . 5.7-1 5.7.2 Circuit Breaker. . . 5.7-2 5.7.3 Disconnector / Earthing Switch. . . 5.7-2 5.7.4 Earthing Switch with Short Circuit Making Capacity . . . 5.7-2 5.7.5 Voltage Transformer . . . 5.7-3 5.7.6 Other Switchgear Modules . . . 5.7-3 5.8 Disposal of Equipment Component Parts . . . 5.8-1 5.8.1 General. . . 5.8-1 5.8.2 Information on Disposal . . . 5.8-1 5.8.3 GIS Components . . . 5.8-2 5.8.4 Material of the GIS-Components . . . 5.8-4 5.8.5 Environmental persistence of the GIS-Components. . . 5.8-6
1-1
1
¤ Delivery
Content
1.1 Transport . . . 1.1-1 1.1.1 Packaging . . . 1.1-1 1.1.1.1 Packaging requirements . . . 1.1-1 1.1.1.2 Types of packaging. . . 1.1-1 1.1.1.3 Container data. . . 1.1-2 1.1.1.4 Environmental factors . . . 1.1-2 1.1.1.5 Preservation. . . 1.1-2 1.1.1.6 Sealing of equipment . . . 1.1-2 1.1.1.7 Packing and unpacking of equipment . . . 1.1-3 1.1.1.8 Securing of equipment . . . 1.1-3 1.1.1.9 Shipping marks . . . 1.1-3 1.1.2 Shipping . . . 1.1-4 1.1.2.1 Loading and lifting facilities . . . 1.1-4 1.1.2.2 Means of transportation . . . 1.1-4 1.1.2.3 Forces and stresses during transportation . . . 1.1-4 1.1.3 Inspections. . . 1.1-5 1.1.4 Irregularities . . . 1.1-5 1.1.5 Standards and regulations . . . 1.1-6 1.2 Receiving Inspection . . . 1.2-1 1.3 Storage. . . 1.3-1 1.3.1 Packing. . . 1.3-1 1.3.2 Storage Requirements . . . 1.3-1 1.3.3 Classification . . . 1.3-1 1.3.4 Parts and Material. . . 1.3-3 1.3.5 Checks . . . 1.3-5 1.4 Building requirements. . . 1.4-1 1.4.1 Static and dynamic loads. . . 1.4-1 1.4.2 Building Requirements and Dimensions . . . 1.4-3 15.10.20091HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-1
1.1 Transport
1.1.1 Packaging
1.1.1.1
Packaging requirements
The following factors must be taken into account when packaging equipment for shipping:
stresses occurring during multiple transshipments climatic conditions
shipping routes
duration of shipment (preservation, environmental factors) storage after shipment
bottoms of containers must be designed to carry the full load of the package equipment
packaging must be able to withstand stresses caused by weight and by forces occurring during transportation
packaging must be geared to the intended type of transportation and de-signed to preclude any damage to the equipment
packaging / equipment may be provided with shock indicators
1.1.1.2
Types of packaging
Wooden support/skid and protective sheeting Only for shipment by truck, by rail or by airway Not suitable for storage
To receive on crane use only the crane-eyelets of the switchgear! Wooden box
For shipment by truck, rail or ship Suitable for storage
Container
For shipment by truck, rail or ship Suitable for storage
Requirements for container
Container must have nailable wooden floors
Types of container
within Europe: Type HTT 6.254 (20’) overseas (to ISO standards): Type 20/8 and 20/8 ½
20’ steel dry cargo container door height 2.26 2.28 m door height 2.58 m
If containers with any other designations are used, they must be equivalent to those listed above.
1HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-2
General container requirements
Containers holding dangerous goods must be CSC-certified
Containers bearing the ACEP mark are approved for unrestricted use Containers must be checked for proper technical condition prior to shipment
(Containers provided with the ACEP mark have been inspected by the manu-facturer)
1.1.1.3
Container data
Container data concerning weight and dimensions should, as far as possible, be geared to the related data for the intended means of transportation.
1.1.1.4
Environmental factors
Equipment may be shipped at temperatures in the range of 30°C to +60°C. The packaging must ensure that all items of equipment are positively protected against any direct contact with water. The packing shall provided adequate protection against dirt, insects and animals.
1.1.1.5
Preservation
The shipment within Europe, specifications concerning equipment preservation shall be included in the order. If no preservative measures are specified, the freight will be packaged in the usual manner.
The preservation required depends on the method of transportation, the storage classification and the storage period.
Storage requirements and classifications are described in detail in chapter “Delivery” in document “Storage” 1HDG 518 101.
In the case of ocean transport, preservation of the equipment is mandatory, since GIS components could be damaged by the associated exposure to humidity.
Protection against condensation of humidity is provided for a transportation period of up to 12 months. If this period is exceeded, adequate measures must be taken to pre-vent the formation of condensation water.
The packaging may be monitored by means of moisture indicators.
If the expiry date of equipment preservation falls within the period before or during shipment, or within the expected storage period, persons responsible for ship-ment / storage shall be informed in due time so that appropriate measures can be taken.
1.1.1.6
Sealing of equipment
For transportation the equipment is filled with N2 to a absolute pressure of 150 kPa.
The gas pressure shall not drop below 110 kPa during shipment and storage. All open flanges must be sealed with a shipping cover.
Shipping covers are chosen according to 1HDG 931 100 (for buses without insulators according to 1HDG 931 101 P1).
1HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-3
1.1.1.7
Packing and unpacking of equipment
Packing and unpacking of equipment shall always take a place in a dry (air-conditioned) environment.
When unpacking switchgear components, check shock indicators on packag-ing / equipment, if provided.
1.1.1.8
Securing of equipment
Free-standing parts shall be provided with appropriate support structures.
All loads shall be prevented from slipping by lashing and blocking. Means of securing equipment in place: Chains, lashes, ropes, square timber and wooden wedges. Make sure that loads are evenly distributed.
The side walls of shipping containers shall not be subjected to any loads. Only con-tainer bottoms are designed to withstand loading and possess sufficient stability. The circuit breaker shall be shipped only in its upright (operating) position.
1.1.1.9
Shipping marks
Markings provided on the packaging shall include fixing and hitching points for trans-portation and hoisting, total weight, installation point of equipment components, and the packed unit’s centre of gravity.
The place of delivery shall be marked on the packaging in accordance with the data provided in the order.
When dangerous goods are shipped, applicable regulations (of the countries of origin and destination as well as transit countries) shall complied with.
1HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-4
1.1.2 Shipping
1.1.2.1
Loading and lifting facilities
To prevent equipment and parts from being damaged during loading and lifting oper-ations, the facilities shall be suitable for this purpose in terms of intended applications and load-carrying capacities.
When moving or lifting packed equipment, make sure that no other than the fixing and hitching points marked on the packaging are used.
Switchbays and components which are not packed may be lifted at suitable hitching points, provided that every precaution has been taken to prevent these parts from being damaged in the process.
The shipping units’ centre of gravity markings shall be taken into account to prevent the units from tipping over.
1.1.2.2
Means of transportation
The means for transportation shall be selected so as to ensure that the shipping units will be subjected to the smallest-possible amount of vibration. Any damage to the equipment must be prevented under all circumstances.
1.1.2.3
Forces and stresses during transportation
The forces are shown in Figure 1.1-1:
direction
F
QFL
FV
Figure 1.1-1: Forces and stresses during transportation Table 1.1-1: Forces in g (g = Acceleration due to gravity)
FL FV FQ
Railway 4.0 g 0.5 g 0.4 g
Road 1.0 g 2.0 g 0.6 g
Ship 0.4 g 2.0 g 0.8 g
During loading and lifting operations higher values may occur. Note
1HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-5
1.1.3 Inspections
Before shipment
Prior to closing the shipping containers, make sure that the equipment to be shipped is properly secured and without damage.
Check shipping containers for proper technical condition. This is particularly important in the case of freight containers.
After shipment
Check shipping container for any damage before opening.
After opening a container, immediately check the equipment for external damage and completeness.
1.1.4 Irregularities
During shipment
Any damage occurring on the packaging in transit shall, as far as possible, be re-paired immediately. If this cannot be done, appropriate measures shall be taken at once to preclude any further damage of the cargo.
All irregularities occurring during shipment as well as any remedial action taken shall be documented and reported.
After shipment
In the event of any damage detected on the packaging or equipment, the insurance company shall be informed and the damage shall be assessed and recorded by an authorized agent.
Photographs shall be taken of any damaged packaging to serve as evidence at a later time.
Any packaging which is damaged or soaked shall under no circumstances be used for prolonged storage of equipment.
Any corrective action taken with regard to packaging or equipment preservation shall be recorded in detail. All materials used for these measure must have been tested and approved.
1HDG 918 706 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.1-6
1.1.5 Standards and regulations
The most important standards and regulations are:
DIN 50 010 climatic definitions
DIN 50 019 climates with regard to technology DIN 55 402 markings
DIN 55 405 packaging DIN ISO 668 freight container
These standards also make reference to other pertinent standards which must be ob-served as well.
Additional regulations, guidelines and instruction sheets have been issued by the fol-lowing organizations:
German Lloyd (GL-Regulations and codes of practice)
German Lloyd (GL-Vorschriften und Richtlinien)
Association for Rationalization in Packaging/Packaging Consulting and Re-search Office (RGV / BFSV Instruction sheets)
Rationalisierungsgesellschaft Verpackung/Beratungs- und Forschungsstelle Verpackung (RGV / BFSV-Betriebsblätter)
Association of german Engineers (VDI-Regulations and -Guidelines)
Verein deutscher Ingenieure (VDI-Vorschriften und -Richtlinien)
These regulations, guidelines, instruction sheets and the relevant standards must be equally observed.
Standards and regulations of the country of destination shall be considered, if appli-cable.
1HDG 518 100 en 26.06.1998 ACEMEWE 29.06.1998 ACEHENE 1.2-1
1.2 Receiving Inspection
All gas compartments of the individual GIS transport units are filled in our factory with N2
to a pressure of approximately 150 kPa. The only exception is the inductive voltage transformer that will be delivered ex works filled with SF6 to a pressure of approximately
150 kPa. In order to detect transport damages as early as possible, check the pressure upon arrival of the equipment at site. Gas compartments that are not pressurized have to be checked for gas tightness prior to assembly of the transport units.
Protocol for Receiving Inspection Page_____of_____
Table 1.2-1: Receiving Inspection
Number of Transport Unit
Storage
Class Date Checked by Remarks, Measures, Checks
1HDG 518 101 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.3-1
1.3 Storage
1.3.1 Packing
Storage life depends on the types of packing material and drying agent being used. Unless otherwise stated, items should remain in the original packing. The storage time indicated in the delivery documents must not be exceeded.
Immediately unpack modules in damaged packing. Parts supplied sealed in plastic or aluminium foil without damages should be handled with care and should not be unpacked until shortly before required.
1.3.2 Storage Requirements
All storage areas must comply with the following general requirements: S Good accessibility for transport and inspection
S Protection against damages
S Restricted access for authorized personnel only S Guaranteed fire protection
S The storage area must be clean and free from unused packing material S When stocking, the moisture contents of the packing must be considered S Flammable material must be stored in a strictly separated area
S Compliance with all local regulations and requirements must be guaranteed
1.3.3 Classification
Every product must be protected from being damaged. This requires a definition of the individual storage conditions. The classification will be defined from A through F as follows:
A Airconditioned storage building B Storage building
C Shelter roof
D Tarpaulin
E Unprotected outdoor storage F Container
A B C
D
E
F
Figure 1.3-1: Storage Classification
1HDG 518 101 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.3-2 Table 1.3-1: Product Example
Classification A B C D E F
Instruments (electrical and electronic) or similarly sensitive
products D
Paints D
Robust switchgear D
Less sensitive material D
Aluminium parts D
General outdoor material D
Hot dipped galvanized material D
Epoxy cast resin D
Table 1.3-2: Protection against ...
Classification A B C D E F
Pressure from stacking and/or excessive cramped packing D D D D D D
Mechanical damage D D D D D D
Rain and snow D D D D
Salty air D D D D
Extreme temperatures (beyond the permissible range) D D D
Detrimental humidity D D D
Temperatures supporting condensation D D
Dust pollution D D
Temperatures below 5 °C D
Table 1.3-3: Storage Requirements
Classification A B C D E F
If not stated otherwise, product remains in original packing D D D D D D Covered by shelter roof, protection against rain and snow D D D D
Fully enclosed D D
With temperature control according to the required storage
temperature D D
Storage in refrigerated room D
With air filter, protection against dust and detrimental humidity D With temperature control to prevent condensation D D
1HDG 518 101 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.3-3 F E D C B A Classification With ventilation D
With tarpaulin at minimum 400 mm above the product, sloped
for water shedding D
With possibility for ventilation (open containers) D
Good drainage required D D
Containers respectively products to be stored at minimum 200
mm above the floor D D
No standing water on the product D
1.3.4 Parts and Material
Table 1.3-4: Classification of Parts and Material for Site StorageParts Material,
Finish
General Instructions Classification Inspections during storage
Checks before Use
GIS bays and Subassemblies
Store in the original packing
If delivered on heavy goods vehicle
If storage period is lon-ger than 1 month, con-nect the heaters in the drive mechanisms
F
C
Refer to Instructions for Installation and Commissioning
Control Cabinets Control Centers
Electrical Equipment
Store in the original packing
If storage period is lon-ger than 1 month, con-nect the heaters in the control cabinets B Measure humidity every 6 months If relative humidity exceeds 60 %, renew drying agent
Touch up any dama-ges to the paint finish
Bushings Porcelain and Silicon
Do not bend during sto-rage
Bushings with sealing rings refer to rubber parts below
Refer to the instructions on the packing
B
Check every
12 months whether all parts are dry; if not, refer to “Checks befo-re Use”
Make sure that the parts are not subject to stress of any kind
Clean the surfaces with Rivolta MTX forte
1HDG 518 101 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.3-4 Checks before Use Inspections during storage Classification General Instructions Material, Finish Parts Flat Gaskets O-rings O-seals Sealing rings
Rubber Store in the original pak-king
Protect from compres-sion, tension and twisting Protect from direct sun-light and artificial sun-light with a high ultra violet contents
Do not store together with copper, manganese metals or plastic foils
B
Check elapsed storage time Check surfaces for scoring or scratches Check the condition of the vulcanized joints
If necessary, clean with soap and water or a solution of 1.5 % soda in water
Rinse with clear water after cleaning
Note:
The water temperature must be equal to the ambient temperature
Steel Sections Hot dipped galvanized
Material must be stored on beams raised at mini-mum 30 cm above the floor
Remove any rusty binding wires
E
Check tarpaulins for damages and replace, if necessary
Remove the white rust-preventive coating
Bolts, Nuts Hot dipped galvanized steel
Store in the original wooden and cardboard boxes
B
Silver plated Alu-minium and Cop-per
Galvanic and special processes
The parts can be stacked, but must be secured against any movement
Flexible copper and alu-minium connections shall be stored in an upright position and slotted into each other
B
Check elapsed stora-ge time
Randomly check silver plated surfaces Check cycle: every 6 months in the first year, every 12 months thereafter
Check 6 months prior to use
Remove the transport packing
Degrease the silver plated surfaces with Rivolta MTX forte Fully remove all remai-ning spots and marks Grease the contact surfaces with acid free petroleum jelly (vaseli-ne) and protect them with crepe paper Castings, Sheet
Metal, Sections and Tubes out of Aluminiumm
Aluminium Store in the original crates
Crates must be stored on beams raised at minimum 30 cm above the floor
D
Check for water pene-tration after heavy rain fall
Check tarpaulins for damages and replace, if necessary Use in accordance with manufacturer’s instructions Paints, lacquers, thinners, harde-ners
Do not store next to any
heat source A
Randomly check six months prior to use
1HDG 518 101 A en 18.04.2005 EXTMEWE 26.04.2005 CHSVOTH 1.3-5
1.3.5 Checks
The following checks shall be performed and documented upon delivery to site and periodically thereafter (take photos of any damages):
S Product designation
S Tightness of packing, covering, sheds and other protective means S Check the heater connections / activate the heaters
S Check the transport gas filling for appropriate pressure S Document any mechanical damages
S Keep the storage area clean
S Conform with any additional storage requirements of the manufacturer S Conform with any additional site storage instructions
1HDG 918 707 A en 26.07.2004 CHSGAKP 16.08.2004 CHSVOTH 1.4-1
1.4 Building requirements
1.4.1 Static and dynamic loads
300
2 1
200
Circuit Breaker Cable Sealing End
1
2 dynamic load points of circuit breaker
680 15KN 15KN 620 1525 700 2145 500 250 250 100 100 350 350 650 1050 340 340
GIS base frame (2x MSH100x100)
1HDG 918 707 A en 26.07.2004 CHSGAKP 16.08.2004 CHSVOTH 1.4-2
Figure 1.4-1 represents a typical double busbar feeder. The loads result from static and dynamic forces due to bay weight and circuit breaker operation.
For each individual layout the mechanical forces are calculated and a corresponding drawing is made.
Static Loads
The loads below are calculated per GIS base frame.
S 2 busbars without voltage transformer and local control cubicle 2 x 11 kN S 1 busbar without voltage transformer and local control cubicle 2 x 10 kN S additional load for local control cubicle 2 x 1.5 kN S additional load for voltage transformer 2 x 2.5 kN
Dynamic Loads
The dynamic loads are measured in a normal industrial building.
Table 1.4-1: Dynamic Loads due to 40 kA design
Load case Load per point (kN) Impulse time (ms) f (Hz) On-operation
(tension / pressure) - 2.8 / 2.8 20 - 50 65
Off-operation
(tension / pressure) - 8 / 5 10 - 30 45
The dynamic loads are evenly distributed on the load points 2 . The forces upwards (4 x 8 kN) are reduced by the weight of the bay.
Installation
The bay is delivered with a base frame. The base frame will be welded on a straightening iron (C-rail), which is integrated in the concrete floor.
If there is no iron structure the GIS supports are to be mounted with chemical anchors M12 x 160 mm or equivalent.
Max. tensile load per anchor in concrete with minimum stability B25 / DIN 1045 is 10 kN. Dowel depth: 110 mm.
1HDG 918 707 A en 26.07.2004 CHSGAKP 16.08.2004 CHSVOTH 1.4-3
1.4.2 Building Requirements and Dimensions
Figure 1.4-1 and Figure 1.4-3 show the recommended dimensions for a GIS in double busbar layout. Other layouts may require smaller or larger dimensions.
The room tolerances and planeness should be equal or better than DIN 18202 which means:
Planeness (mm) 5 8 12 15 20
on Distance (m) 0.1 1 4 10 15
Final overall dimensions are to be defined in cooperation with the client.
Option
(minimum space
for walking) (usual case)
3600 500 2825 21 15 5500 ca. 3600 ca. 1400 ca. 600 1700 2000
1HDG 918 707 A en 26.07.2004 CHSGAKP 16.08.2004 CHSVOTH 1.4-4
Factors to be considered for building dimensions: S Existing building or other installed equipment
S Type of HV connections: Cable, transformer SF6 gas-to-oil bushing or SF6-air bushing
S High voltage cable data, type and outlet direction S Location of GIS local control cabinets
S Type of lifting device
The recommended lifting capacity (depending on the weight of heaviest transport unit) is 30 kN, service crane: 10 kN.
For vertical connection the cable basement normally has a height of 2 m.
min.2000 WxH=3000x3000 1000 1000 1000 1000 1000 1000 1000 1200 Circuit Breaker C160 C160 ca. 12000 5500
Figure 1.4-3: Plan View
Figure 1.4-3 shows a 8-bay arrangement. The standard width of a bay is 1 m. The building dimensions can be easily determined based on the number of bays. For a convenient and fast HV-cable sealing end assembly, openings for the cables made 0.5 m x 0.7 m are recommended, see Figure 1.4-1. For special cases contact ABB.
The large front door (left side in Figure 1.4-3) is the equipment access door (width x height = 3 m x 3 m). The second door is a standard access door which is provided for convenience and safety.
2-1
2
¤ Installation
Content
2.1 Installation of the GIS . . . 2.1-1 2.1.1 Preparation of the Installation Area . . . 2.1-1 2.1.2 Cleaning . . . 2.1-2 2.1.3 Flange Connections . . . 2.1-3 2.1.4 Tightening Torque for Bolts . . . 2.1-4 2.1.5 Filling of Gas Compartments . . . 2.1-4 2.2 Conversion Tables . . . 2.2-1 2.3 Earthing . . . 2.3-1 2.3.1 Earthing of the GIS Bays. . . 2.3-2 2.3.2 Dimensioning. . . 2.3-2 2.3.3 Installation of the GIS Earthing. . . 2.3-3 2.3.4 Local Control Cabinets. . . 2.3-3 2.3.5 Cable Sealing End . . . 2.3-4 2.3.6 Busduct Connections . . . 2.3-8 2.3.7 Surge Arresters . . . 2.3-9 2.3.8 Example . . . 2.3-9 2.4 Local Control Cubicle . . . 2.4-1 2.4.1 Temporary Storage . . . 2.4-1 2.4.2 Separate Installation of the Local Control Cubicles . . . 2.4-2 2.4.3 Installation of the Local Control Cubicles . . . 2.4-2 2.4.4 Dismounting the Local Control Cubicle. . . 2.4-2 2.4.5 Control Cables. . . 2.4-2 2.4.6 Cable Glands. . . 2.4-3 2.4.6.1 Cable Glands with Earthing Ring . . . 2.4-3 2.4.6.2 Cable Glands without Earthing Sleeve or Earthing Ring 2.4-4 2.5 Coupling of Feeders. . . 2.5-1 2.5.1 Fixing the Base Frame by means of Adjustment Screws 2.5-1 2.5.2 Fixing the Base Frame by means of Fill Plates . . . 2.5-1 2.5.3 Coupling of the Feeder Bays . . . 2.5-2 2.5.4 Mounting and Dismounting of the Transversal Erection
Module . . . 2.5-3 2.6 Surge Arrester . . . 2.6-1
2.6.1 Feeder Module with integrated Disconnector / Earthing
Switch . . . 2.6-2 2.6.2 Surge Arrester on the end of a Busbar . . . 2.6-4 2.6.3 Feeder Module without Disconnector/Earthing Switch. 2.6-5
1HDG 518 200 L en 17.08.2007 EXTMEHA 25.09.2007 CHSFRVW 2.1-1
2.1 Installation of the GIS
These instructions refer to the installation of a GIS and to all works that require open-ing a gas compartment.
All actions described in this chapter may only be executed if all notes, cautions and warnings of the product documentation, especially the safety instructions in chapter “Operating Instructions” in document 1HDG 518 020 “Safety Instruc-tions” have been read and were understood and that all given conditions are ful-filled. Otherwise, the manufacturer will not take any responsibility due to damages caused by improperly handling.
It must be possible to clean the shoes before entering the immediate working area. The working clothes must be made of non-fluffing material.
2.1.1 Preparation of the Installation Area
Securing the Installation Area:
The installation area must be secured against entry of unauthorized personnel.
Power Supply:
The following power supply outlets must be made available in the installation area: S 1-phase AC outlets (16 A) and
S 3-phase AC outlets (16 A) Walls and Ceilings:
S Walls and ceilings have to be in a condition, that neither dirt nor plaster might fall or rub off
S If necessary, apply a surface-binding coat of paint
S Formation of condensation water on the ceiling has to be prevented under any circumstance
Floor Conditions:
S The floor in the installation area must have a firm surface
S It must be possible to keep the floor dust-free with a vacuum cleaner Outdoor Installation:
S In case of an outdoor installation of the GIS or of GIS components, open gas compartments must be protected from the entry of dust or humidity (e. g. by means of installation covers, tarpaulins etc.)
Room for Repair Works:
A room must be provided for necessary repair works that is: S weather protected
S lockable
S separated from the installation area
1HDG 518 200 L en 17.08.2007 EXTMEHA 25.09.2007 CHSFRVW 2.1-2
2.1.2 Cleaning
SF6 can loose its arc quenching and insulating properties when contaminated. For
this reason, all surfaces and components that will be in contact with SF6 have been thoroughly cleaned in our factory and have been installed under conditions of ut-most cleanliness. When working on open devices or gas compartments, avoid the entry of or contact with dirt, sweat and humidity at any time.
Water, acid contamination and oxygen (especially when simultaneously present) can cause corrosion that might have a negative impact on the mechanical function of the GIS components.
Water, especially when combined with acid contamination, can reduce the dielectric strength of the GIS due to condensation at low operating temperatures and high pres-sure. For this reason, the degree of contamination has to be limited to a level that cor-rosion and/or condensation are of no significance.
Installation Area:
Prior to opening a gas compartment, thoroughly clean and vacuum clean the installa-tion area, especially in the immediate vicinity of the flanges to be connected. Avoid dust disturbance in the installation area.
Carry out a visual inspection of the interior of an open gas compartment.
Rub the insulators and all teflon parts with a cloth moistened with a suitable cleaning agent. Cleaned insulators may only be touched wearing disposable latex gloves. Do not use water for cleaning under any circumstance!
Cleaning the GIS Components:
Immediately before assembly, clean all loose metal parts and subassemblies that have to be installed and all contacting and sealing surfaces.
Table 2.1-1: Material and cleaning agent
Material Cleaning agent
Flange sealing surfaces and O-rings Contacting surfaces of the conductors Connectors Links Screens Insulators Teflon parts Rivolta M.T.X. 60 (preferably) Ethanol 99
Isopropanol, purity min. 99%
painted surfaces of the GIS pure water or soap suds (0.5%) Silicon shielding of the bushing Wacker Silicon-Oilemulsion E 1044 CAUTION
Note
1HDG 518 200 L en 17.08.2007 EXTMEHA 25.09.2007 CHSFRVW 2.1-3
Use a non-fluffing cloth for cleaning, moistened with the cleaning agent. Rub all parts with this cloth. Take note of the following:
S Try to avoid touching the components internal to the gas compartments S Use disposable gloves for cleaning
S Use a spray bottle to prevent contamination of the cleaning agent
S Cleaning cloth must not contain any substances that could dissolve in the cleaning agent
S Moisten the cloth so that the cleaning agent does not drip or spill S Remove residues of the cleaning agent with a clean cloth Cleaning the painted GIS:
Painted surfaces are only allowed to be cleaned by means of pure water or soap suds (0.5%).
Cleaning the silicon bushing :
Use a non-fluffing cloth for cleaning, moistened with the cleaning agent Wacker Sili-con-Oilemulsion E 1044. Rub all the silicon shieldings with this cloth. Take note of the following:
S Cleaning cloth must not contain any substances that could dissolve in the cleaning agent
S Moisten the cloth so that the cleaning agent does not drip or spill S Remove residues of the cleaning agent with a clean cloth
2.1.3 Flange Connections
Once the transport covers have been removed, the installation of the flanges must be completed without interruptions.
If interruptions can not be avoided, open flanges must be covered with a clean plastic foil. This instruction must also be observed if an insulator is mounted on the flange.
Sealing Surfaces:
S Check sealing surfaces for scratches or similar damages S Even out any scratches with fine sand paper
S Remove the dust with a vacuum cleaner S Clean the sealing surfaces
O-Rings:
O-Rings have to be cleaned before they are installed (“2.1.2 Cleaning”).
Do not install any O-rings that show damages or deformation from previous use. Before closing a flange connection, clean the immediate vicinity and all accessible parts of the components to be connected with a vacuum cleaner. Do not touch the active parts and the insulators with the vacuum cleaner’s nozzle.
1HDG 518 200 L en 17.08.2007 EXTMEHA 25.09.2007 CHSFRVW 2.1-4
2.1.4 Tightening Torque for Bolts
The following tightening torques are valid for non-greased bolts in threads and holes. Any deviations from these values are indicated in the assembly drawings.
Table 2.1-2: Tightening Torques for non-greased Bolts
Thread
Tightening Torque in Nm Thread
Steel/8.8 *) Steel/A2-70 **) Aluminium ***)
M4 2,9 1,5 M5 6 5,2 3 M6 10 7,8 5,5 M8 25 19,5 14 M10 49 38,3 26 M12 86 67,2 45 M16 210 147,6 100
*) Extract from NB305080, tolerance "3% **) Extract from GPDT049615, tolerance "3%
***) Extract from GPFA820006, tolerance +20% 0%, independent from the material of the bolts
2.1.5 Filling of Gas Compartments
All works related to SF6 are described in chapter “Gas insulated Switchgear” in
document 1HDG 518 005 “Gas-Handling” and have to be followed strictly!
1HDG 518 015 C en 13.07.2005 EXTMEHA 21.07.2005 CHSVOTH 2.2-1
2.2
Conversion Tables
Temperature
Table 2.2-1: Temperature
°C (Degree Celsius) °F (Degree Fahrenheit)* K (Kelvin) **
0 ° 32 ° 273.16 15 ° 59 ° 288.16 20 ° 68 ° 293.16 25 ° 77 ° 298.16 30 ° 86 ° 303.16 *n °C = ( 1.8 x n + 32) °F **n K= n − 273.16 °C Tightening Torques
Table 2.2-2: Tightening Torques
Nm (Newtonmeter) lbf x ft kpm (Kilopondmeter)
1 0.7376 0.102
1.356 1 0.1383
9.807 7.233 1
Absolute Pressures
Table 2.2-3: Absolute Pressures kPa
(Kilo-Pascal)
MPa (Mega-Pascal)
bar psi (Pound per Square Inch)* Torr 0.133322 0.0001333 0.001333 0.01934 1 6.8948 0.0068948 0.068948 1 51.715 100 0.1 1 14.504 750.06 420 0.42 4.2 60.917 3150.25 440 0.44 4.4 63.817 3300.26 500 0.5 5 72.520 3750.3 600 0.6 6 87.024 4500.36 620 0.62 6.2 89.925 4650.37 700 0.7 7 101.528 5250.42
* psig = pound per square inch gauge (overpressure) psi may also be expressed as lbf / in2
1HDG 518 015 C en 13.07.2005 EXTMEHA 21.07.2005 CHSVOTH 2.2-2 Force Table 2.2-4: Force N (Newton) lbf (Pound) 1 0.22481 4.4482 1 Length Table 2.2-5: Length mm (Millimeter) in (Inches) 1 0.03937 25.4 1 Weight Table 2.2-6: Weight
kg (Kilogramm) t (Tons metric) lbm (Pound) US t (2000 lbm)
1 0.001 2.20462 0.0011 1000 1 2204.62 1.1 0.4536 0.00045 1 0.0005 507.185 0.907 2142.56 1 Volume Table 2.2-7: Volume
l (Liter) gal (liquid) Gallons gal (dry) Gallons m3 Cubicmeter ft3 Cubicfeet 1 0.26417 0.22702 0.001 0.03531 3.78541 1 0.85937 0.0037 0.13368 4.40489 1.16365 1 0.0044 0.15556 1000 264.17 227.02 1 35.31467 28.31685 7.48052 6.42851 0.02832 1
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-1
2.3 Earthing
“Earthing” is defined as the entirety of means and procedures associated with the earthing of equipment. Earthing means to connect a conductor via an earthing system to earth.
“Earth” refers to both, the earth as a location and the earth as a substance such as humus, clay, sand, gravel and rock. The earth is a conductor whose potential outside the influence of earthing systems is considered to be zero. The “Reference Earth” (neutral earth) is defined as a part of the earth, especially of its surface, outside the influence of an earthing system in which between two random points no voltages de-riving from the earth current can be measured.
“Earthing system” is defined as the entirety of electrically connected earthes, metal parts acting similarly (e g. pole bases, armatures, metal cable sheathing) and earthing leads.
“Earthing conductor” is defined as a conductor, that is embedded in and electrically connected to the earth, or a conductor that is embedded in concrete. In the latter case, the concrete is connected to the earth on a large area (e. g. foundation earth). “Earthing lead” is defined as an electrical lead laid either outside the earth or insulated in the earth, that connects a GIS part to be earthed with the earth. If a disconnecting link, a disconnector or a Petersen coil is installed between a center point or an outer conductor and the earth, only the connection between earth and the earthing terminal of such a device is considered as an earthing lead.
The earthing of the GIS is to be documented in the site test protocol “Commissioning” 1HDG 518 680.
The installation of the GIS earthing and the earthing leads shall be strictly in ac-cordance with the project-specific earthing layout diagrams and the earthing plans in the project-specific part of this documentation!
Note
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-2
2.3.1 Earthing of the GIS Bays
The individual modules of a GIS bay are interconnected through their enclosures. Each GIS bay is connected to an earthing conductor by means of connecting bolts and nuts and earthing leads. The connecting bolts and nuts must have minimum a dimension of M12.
Crimping of the terminal ends, branch terminals etc. is carried out at site. The GIS enclosure must be connected to earth. All metallic parts, that shall be
earthed and do not belong to a main or auxiliary circuit, shall be connected individually to earth. Frames and supports do not need to be earthed separately if they are welded or bolted to the GIS enclosure.
To be observed during Installation of the Earthing System
S All electrical connections within the earthing system shall be properly in-stalled
S Earth leads shall be protected against mechanical damage S Earth leads shall be installed without loops
S Earthing system shall not be interrupted at any point S Earthing system shall be inspected before commissioning
2.3.2 Dimensioning
The GIS is dimensioned for a rated short-time withstand current of up to 40 kA / 3 sec.
All material necessary for earthing of the GIS is delivered together with the equipment.
Earthing
Cross section Short circuit duration 1 sec Short circuit duration 3 sec
Solid copper (Cu) 220 mm2 440 mm2
Copper rope (Cu) 2 x 120 mm2 4 x 120 mm2
Connect the earthing conductors of the GIS with 2 x M12.
Potential Earthing
Use 16 mm2 earthing conductors for potential earthing of the local control cabinets
and all other modules.
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-3
2.3.3 Installation of the GIS Earthing
Earthing
The individual GIS bays are interconnected through the busbar enclosures. Connect the circuit breaker base plate of the outer bays (Figure 2.3-1) each via 1 x 120 mm2 (1 sec) / 2 x 120 mm2 (3 sec) with the building’s earthing grid.
If only one GIS bay is to be installed, attach 2 x 120 mm2 (1 sec) / 4 x 120 mm2
(3 sec) to the circuit breaker base plate (Figure 2.3-1). Potential Earthing of the Busbar
S Either connect the busbar at both ends and at least every 3 m with the earthing grid or the steel reinforcements in the floor (q 16 mm2 Cu)
... or ... connect the base plate of the circuit breaker in each GIS bay at the ends of the steel reinforcements in the floor (q 16 mm2 Cu)
S Connection e. g. through earthing holes, slotted bars, earthing lugs (q 16 mm2 Cu)
S Mounting rails incorporated in the floor have to be connected to the earthing grid respectively the steel reinforcements in the floor
120 mm2
120 mm2
Figure 2.3-1: Position of Earthing Terminals
2.3.4 Local Control Cabinets
Earthing
The protective conductor bar is connected with the GIS enclosure through 1 x M12 earthing connection bolt and an earthing conductor (q 16 mm2 Cu).
Potential Earthing for separated Local Control Cabinets
1. Install the conductor for potential earthing (q 16 mm2 Cu) in parallel to the
control cables
2. Connect it to the GIS enclosure and the protective conductor bar inside the control cabinet
3. In addition, connect the protective conductor bar for potential earthing with the building’s earthing system (q 16 mm2 Cu)
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-4
2.3.5 Cable Sealing End
Install the earthing connection between the cable jacket and the enclosure of the cable termination as shown in Figure 2.3-3, Figure 2.3-5 or Figure 2.3-6:
The earthing of power cables terminated on the GIS is project-specific and is provided and carried out by the cable supplier. The earthing points are marked with an earthing symbol on the enclosure of the cable sealing end (Figure 2.3-2). The cable jacket earthing (Figure 2.3-3 and Figure 2.3-5) is connected either unilaterally or in both substations interconnected by the power cable (bilaterally).
1 Earthing bracket
2 Borehole for cable jacket earthing
1 2
2
2
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-5
Bilateral Earthing
Connect on both sides as per Figure 2.3-3, or as per Figure 2.3-5 if ring-type current transformers are installed at the cable.
Unilateral Earthing
Connect one side as per Figure 2.3-3 and the remote side as per Figure 2.3-6. For surge protection install shock-proof surge arresters on the remote side.
Direct Earthing: Pressure Ring on each Phase
1 Cable jacket earthing (optional) 2 Earthing bolt
3 Cable base plate
4 Earthing jumper 3x on periphery
5 Thrust collar
6 Cable sealing end insulator 7 Enclosure EXK-0 7 6 2 3 4 5 X 1 X
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-6
Direct Earthing: Pressure Ring for all three Phases
1 Earthing bolt 2 Cable base plate 3 Earthing jumper
4 Pressure ring
5 Cable sealing end insulator 6 Enclosure EXK-0 “W” “W” Z Detail “W“ View Z 3 1 5 6 2 3 4
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-7
Direct Earthing with Ring-type Current Transformers
X 2 1 8 7 6 5 4 3
1 Ring-type current transformer 2 Cable jacket earthing (optional)
3 Earthing lead passing through transformer (2 to 4 times on the cable periphery), comin and going leads tied together
4 Earthing bolt 5 Cable base plate 6 Thrust collar
7 Cable sealing end insulator 8 Enclosure EXK-0
Figure 2.3-5: Direct Earthing with Ring-type Current Transformer
Unilateral Earthing on Remote Side for IEC-Cable Sealing End
If no IEC-cable sealing end is used, the earthing shall be done on the GIS-side with the surge arrester mounted on the remote side.
1 Surge arrestor ABB type MVR 0,44 for cable lengths < (50 m ... 100 m)
2 Ring-type current transformer (optional) 3 Earthing bolt
4 Cable base plate 5 Thrust collar
6 Cable sealing end insulator 7 Enclosure EXK-0 X 1 7 6 5 4 3 2
Figure 2.3-6: Unilateral Earthing on Remote Side
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-8
2.3.6 Busduct Connections
Outdoor bushings are connected to the steel reinforcements in the floor underneath the GIS and to the ring earth electrode. The sleeve bearings in the contact areas of the GIS busducts are to be bridged using the shortest possible route with a minimum of 16 mm2 Cu (Figure 2.3-7).
For long busduct connections, the GIS enclosure has to be connected with all metal parts that are being passed in close proximity.
Connect all parts installed outdoors to the external ring earth electrode using the shortest possible route (Figure 2.3-7). In order to protect the following GIS compo-nents sufficiently against the intrusion of electromagnetic waves, copper rope of 120 mm2 (1 sec) / 240 mm2 (3 sec) or solid copper must be used for such connections.
q 16 mm2 Cu
q 120 mm2 Cu Detail X
Busduct contact area with insulating intermediate layer q 16 mm2 Cu Cross section: 120 mm2 (1 sec) / 240 mm2 (3 sec) X
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-9
2.3.7 Surge Arresters
Conventional surge arresters, that are directly linked to the SF6-air bushings, must be
connected to the external ring earth electrode using the shortest possible route. Use solid copper with a minimum cross section of 220 mm2 (1 sec) / 440 mm2 (3 sec) per arrester pole.
SF6-encapsulated surge arresters are bolted to the GIS bay. In the base plate are several tapped holes M12 which have to be used for the earthing connection. The base plate of the surge arrester has to be connected by the shortest distance with the GIS earthing.
Recommended Minimum Cross-sections for Earthing Conductors S Copper: Cross-section 80 mm2
S Aluminium: Cross-section 150 mm2
2.3.8 Example
Example of a GIS earthing as shown in Figure 2.3-8 through Figure 2.3-10 1. Earthing of the first and the last GIS bay with copper rope:
Connect to the external ring earth electrode (1) diagonally with 1 x 120 mm2
(1 sec) / 2 x 120 mm2 (3 sec) on each side
2. Equipotential bonding between GIS and steel reinforcement in the floor: Install at the bays on each end of the installation with 16 mm2 Cu, preferably in each GIS bay, at minimum every 10 m (2)
3. Connect earthing to the external ring earth electrode and to the steel rein-forcement in the floor (3)
4. Earth the local control cabinet (4) together with the GIS bay (Detail: Figure 2.3-9)
1 Connection of the first and the last GIS bay to the earthing grid
2 Equipotential bonding between GIS and steel reinforcements in the floor 3 Connection to the external ring earth electrode and the steel reinforcements 4 Connection of the local control cabinet and earthing through the GIS bay
Cross section: 120 mm2 (1 sec) / 240 mm2 (3 sec) 1 3 1,2 4
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-10 1 Connection of the first and the last GIS bay to the earthing grid
2 Equipotential bonding between GIS and steel reinforcements
3 Connection to the external ring earth electrode and the steel reinforcements 4 Connection of the local control cabinet and earthing through the GIS bay 1
1,2 4
3
1HDG 918 733 D en 02.10.2008 EXTMEHA 26.11.2008 CHSVOTH 2.3-11 3
3
1, 2 1, 2
4 4 4 4
1 Connection of the first and the last GIS bay to the earthing grid 2 Equipotential bonding between GIS and steel reinforcement
3 Connection of earthing to the external ring earth electrode and the steel reinforcement 4 Connection of local control cabinet and earthing through the GIS bay
1HDG 918 724 B en 26.01.2009 EXTMEHA 10.07.2009 CHSVOTH 2.4-1
2.4 Local Control Cubicle
This document describes the installation of the conventional control cubicle and the control cubicle with SCADA systems (SCADA = Supervisory Control And Data Ac-quisition).
The local control cubicle (Figure 2.4-1) is the user interface for the operation of the GIS. All electrical auxiliaries for command, signalling and interlocking are incorporated in the local control cubicle.
Rear view
Section view Figure 2.4-1: Local Control Cubicle
2.4.1 Temporary Storage
If the local control cubicles cannot be installed immediately upon their arrival at site, they have to be temporarily stored in a dry and dustfree location.
Permissible Temperature Range for Storage at site: S For dry air (max. 40 %) . . . : max. +55 _C S For humid air . . . : max. +40 _C
Packing that has been opened for inspection has to be closed and sealed as originally delivered.
If the local control cubicles are unpacked, immediately activate the anti-condensation heaters!
Do not apply any adhesives to the painted surfaces of the local Control Cubicles! Note
1HDG 918 724 B en 26.01.2009 EXTMEHA 10.07.2009 CHSVOTH 2.4-2
2.4.2 Separate Installation of the Local Control Cubicles
Normally the local control cubicles are installed and tested directly on the respective GIS bay. As an exception, the local control cubicles can also be installed separate from the GIS. In this case they are hardwired to the GIS bay. Before any installation works commence, the GIS building has to be in a condition that prevents damages to the GIS from humidity or dirt.
Requirements for the GIS Building:
S All windows and doors must be in place
S All walls and ceilings must be plastered, painted and dry
S Mounting frames, cable troughs and installation openings have to be installed accurately and in strict accordance with the assembly drawings
S Once the installation of the local control cubicles has started, all work that might generate dust or dirt must be stopped
2.4.3 Installation of the Local Control Cubicles
The local control cubicle is pre-installed in the factory. During the installation simply activate the anti-condensation heater of the local Control Cubicle.
2.4.4 Dismounting the Local Control Cubicle
1. Disconnect all cabinet voltages
2. Install loop wire connection between the previous and the following Control Cubicle (refer to project-specific drawings)
3. Disconnect the wiring both, internal and external to the GIS bay 4. Dismount the control cubicle from the GIS bay
2.4.5 Control Cables
Plug-type Cables:
All control cables of plug-type are pre-manufactured and tested in the factory (parts list “GSXE 030 160”).
Control Cables on the GIS:
With integrated local control cubicles the current and voltage transformers and the gas density relays are connected in the factory according to the project-specific wiring dia-grams.
The cable entries on the local control cubicle are dimensioned for the respective maxi-mum cable cross section required at this location.
If cables with a smaller cross section shall be used, use bolted joints with the appropriate reduction pieces!
1HDG 918 724 B en 26.01.2009 EXTMEHA 10.07.2009 CHSVOTH 2.4-3
2.4.6 Cable Glands
The control cables are brought into the local control cubicles through cable glands. Clamp the bracket for traction relief onto the cable jacket.
The bracket for traction relief must not be clamped onto the cable jacket to be used for earthing!
Pay attention to the connection between the cable glands and the sheet metal of the local control cubicle. Abrade all paint from the contacting area!
2.4.6.1
Cable Glands with Earthing Ring
When using a cable gland with earthing ring, the cable jacket of the control cables is earthed. The earthing of cables with a shield of copper mesh is realized by means of a cable gland with cable shield contacting and a centering traction relief.
Earthing of the Cable Shield (Figure 2.4-2): 1. Strip the cable jacket (1)
2. Cut the cable shield (6) to the length of the earthing ring (7) (length of the overhanging cable shield (6) equal to width of the earthing ring (7)) 3. Disentangle the stripped portion of the cable shield (6)
4. Radially bend the stripped portion of the cable shield (6) outwards 5. Clamp the cable shield (6) between the two earthing rings (5) and (7)
6 7
5
180 mm 160 mm
1 Insulated cable jacket of the control cable
2 Bracket for traction relief 3 Thrust collar
4 Sealing ring
5 Earthing ring (tinned Cu) 6 Cable shield
7 Earthing ring (tinned Cu) 8 Hexagonal bottom 1 3 2 8 4
Figure 2.4-2: Earthing of a Cable Shield using a Cable Gland with Earthing Ring
CAUTION
1HDG 918 724 B en 26.01.2009 EXTMEHA 10.07.2009 CHSVOTH 2.4-4
2.4.6.2
Cable Glands without Earthing Sleeve or Earthing Ring
When using cable glands without an earthing sleeve or an earthing ring, connect the cable shield of the control cable to earth.
Earthing of the Cable Shield (Figure 2.4-3): 1. Strip the cable jacket of the control cable (1)
2. Disentangle the cable shield and twist to one side to a plait (max. length of the plait: 10 cm)
3. Pull a yellow-green insulating sleeve (5) over the plait 4. Crimp a cable lug (4) onto the end of the plait
5. Connect the cable lug (4) to a PE bar or and earthing bolt
A plait which is too long may result in malfunctions caused by transient over-voltages. The length of the plait must therefore not exceed 10 cm.
1 Control cable 2 Cable gland 3 Metal cover
4 Cable lug (for connection to PE bar or earthing bolt)
5 Twisted cable shield with yellow-green insulating sleeve 5 4 3 2 1
Figure 2.4-3: Earthing of Cable Shield using a Cable Gland without Earthing Sleeve or Earthing Ring
1HDG 918 726 B en 22.05.2006 EXTMEHA 06.06.2006 CHSVOTH 2.5-1
2.5 Coupling of Feeders
All actions described in this chapter may only be executed if all notes, cautions and warnings of the product documentation, especially the safety instructions in chapter “Operating Instructions” in document 1HDG 518 020 “Safety Instruc-tions” have been read and were understood and that all given conditions are ful-filled. Otherwise, the manufacturer will not take any responsibility due to damages caused by improperly handling.
All works related to SF6 are described in chapter “Gas insulated Switchgear” in document 1HDG 518 005 “Gas-Handling” and have to be followed strictly! Each feeder bay is mounted on a base frame in the factory. Depending on the size of the line-up and the type of floor, there are two different methods of fixing the GIS:
S The circuit breaker base plate is connected to the base frame by means of 8 adjustment screws
S The circuit breaker base plate is directly bolted to the base frame and leveled in the factory by means of fill plates
The first feeder bay is to be positioned according to the respective primary drawing. Prior to starting the installation the levelness of the floor and the position of the wall and floor openings have to the checked.
2.5.1 Fixing the Base Frame by means of Adjustment Screws
The first feeder bay has to be aligned using a spirit-level over the busbar connection flanges.
Adjust the first feeder bay with the adjustment screws of the circuit breaker such that the maximum permissible floor uneveness can be leveled out when installing the remaining feeder bays, and that perfect coupling of all feeder bays is guaranteed.
2.5.2 Fixing the Base Frame by means of Fill Plates
If floor eveness is guaranteed (e. g. spacer bars), the leveled feeder bays can be bolted directly to the base frame.
WARNING!
1HDG 918 726 B en 22.05.2006 EXTMEHA 06.06.2006 CHSVOTH 2.5-2
2.5.3 Coupling of the Feeder Bays
The bays are filled with the transport gas N2 in the factory and closed with transport
covers.
1. Release the transport gas and remove the transport covers
Busbar Connection
1. Position the feeder bay to be connected according to the bay pitch (800/1000) + [ 100
2. Make sure that the busbar flanges to be connected are: S parallel and leveled
S within the prescribed tolerances (Figure 2.5-1)
3. Slide the feeder bay to be connected to the bay pitch measure 800 " 5 respectively 1000 " 5. Make sure that the contactors (4) are centered when sliding over the conductor (2).
The bay pitch can be adjusted by means of the transversal erection module by 150 " 5 respectively 350 " 5. In order to do so, the transversal erection module has to be released, and the enclosure can be shifted (Figure 2.5-2). Make sure that the O-ring and the sealing surface of the enclosure are not damaged.
1 Barrier insulator of adjacent module 2 Conductor
3 Screw M12 4 Contactor
5 O-ring
6 Enclosure of transversal erection module 7 Cover 150 5 or 350 5 1 2 3 4 5 6 7