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ICO
High voltage current transformer for outdoor use
Continued safety and installation instructions
Safety and installation instructions. Please read before use!
The high voltage current transformer works on the principle of the inductive transformer. The secondary side is
galvanically separated from the primary side. It is used in switchgear, switching device combinations and power
distribution systems in connection with secondary devices (relays, meters, indication instruments). The instru‐
ment transformer is designed in oil-paper insulation technology. Head housing and base are made of aluminum
and galvanised steel, the insulator is made of silicone. Refer to the rating plate on the device for the operational
specifications.
UNPACKING
Check the transformer for completeness and damage.
Pay attention to sharp edges. You could get cut on them.
If the transformer shows any signs of external damage,
there is a risk of electric shock during commissioning.
STORAGE
Store the transformer at an ambient temperature between
-25°C and +40°C.
»
The transformer must preferably be stored in a ver‐
tical position and screwed to the ground.
»
If you store the transformer in a lying position, the
device must stand upright for at least 24 hours before
it can be put into operation.
Secure the intrument transformer against slipping, tilting
and falling down.
GERMANY HAMBURG • WIRGES • KIRCHAICH • DRESDEN
AUSTRIA MARCHTRENK | HUNGARY KECSKEMÉT | CHINA SHANGHAI | USA HARTWELL
1
Oil level indicator
2
Ring bolts for transport purposes
3
Primary connection
4
Insulator
5
Oil drain screw
6
Earthing bolt holes
7
Terminal box with secondary terminals
8
Rating plate
TRANSPORT
The transformer must be handled by trained personnel
using suitable transport equipment (crane). Please note
the transport instructions on the Òdimensional drawing.
Observe the weight specified on the Òrating plate. Caution:
the transformer is top-heavy!
»
Means of transport permitting, the transformers may
be transported in a vertical position.
»
Larger transformers are transported in a horizontal
position.
If any damage occurs during transport or storage, please
contact us directly.
Page
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Continued on next page
Version: 09/03/2020
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Related Manuals for RITZ ICO 72,5
Summary of Contents for RITZ ICO 72,5
- Page 1 Page High voltage current transformer for outdoor use Continued safety and installation instructions Safety and installation instructions. Please read before use! The high voltage current transformer works on the principle of the inductive transformer. The secondary side is galvanically separated from the primary side. It is used in switchgear, switching device combinations and power distribution systems in connection with secondary devices (relays, meters, indication instruments).
- Page 2 Page High voltage current transformer for outdoor use Continued safety and installation instructions OPERATION NOTICE » During operation, never touch the primary or secon‐ dary terminals. Ensure a safe working environment during installation, commissioning, shutdown » Operate the transformer with the terminal box closed. during inspection work on the electrical system.
- Page 3 We accept no liability for incorrect installation. Manufacturer: RITZ Instrument Transformers GmbH · Wandsbeker Zollstraße 92-98 · 22041 Hamburg · Germany Version: 09/03/2020 GERMANY HAMBURG • WIRGES • KIRCHAICH • DRESDEN...
- Page 4 User manual ICO 72,5...245 High voltage current transformer HB ICO Version: 01 / Stand 01.06.2021 GERMANY HAMBURG • WIRGES • KIRCHAICH • DRESDEN AUSTRIA MARCHTRENK | HUNGARY KECSKEMÉT | CHINA SHANGHAI | USA HARTWELL...
- Page 5 The absence of these references, however, does not imply that the relevant terms or entries are free from these rights. Subject to technical modifications. Manufacturer: RITZ Instrument Transformers GmbH · Wandsbeker Zollstraße 92-98 · 22041 Hamburg · Germany 2/47...
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Page 6: Table Of Contents
ICO 72,5...245 USER MANUAL Table of contents Table of contents READ FIRST, THEN TAKE ACTION! 1.1 About this device 1.1.1 What is the device? 1.1.2 What is the purpose of the device? 1.2 About this manual 1.2.1 Who is this manual intended for? 1.2.2 How is this manual set out? - Page 7 USER MANUAL ICO 72,5...245 Table of contents 3.2 Troubleshooting 3.3 Dismantling 3.4 Transport and storage 3.4.1 Transporting the device 3.4.2 Storing the device 3.5 Disposal HOW WE AS THE MANUFACTURER CAN HELP 4.1 Repairs 4.2 Spare parts 4.3 Other queries TECHNICAL DATA 5.1 Technical data...
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Page 8: Read First, Then Take Action
ICO 72,5...245 USER MANUAL Read first, then take action! 1 Read first, then take action! About this device 1.1.1 What is the device? This device is a ICO type current transformer for outdoor use. The current transformer is used to convert high alternating currents into smaller, directly measurable currents according to the principle of the inductive transformer. -
Page 9: What Is The Purpose Of The Device
USER MANUAL ICO 72,5...245 Read first, then take action! » An oil drain screw enables access to the oil chamber in the trans‐ former base. The oil level indicator on the head of the transformer is optimised for the operator's viewing angle. -
Page 10: About This Manual
ICO 72,5...245 USER MANUAL Read first, then take action! About this manual 1.2.1 Who is this manual intended for? The target group includes everyone involved in the installation, operation and maintenance of this device. NOTICE Please read this user manual carefully before commissioning the device and observe all the regulations and information. -
Page 11: How Do You Use This Manual
USER MANUAL ICO 72,5...245 Read first, then take action! CAUTION Beware of health hazards and serious damage to property NOTICE Note on the possibility of considerable damage to property 1.2.3 How do you use this manual? This user manual is part of the device you have received. -
Page 12: Who Is Allowed To Work With This Device
ICO 72,5...245 USER MANUAL Read first, then take action! 1.3.2 Who is allowed to work with this device? Everyone involved in the installation, operation and maintenance of the device must hold the appropriate qualifications. In order to prevent accidents, everyone who works with the transformer must meet the following minimum requirements. -
Page 13: Which Legal Aspects Should You Be Aware Of
USER MANUAL ICO 72,5...245 Read first, then take action! 1.3.4 Which legal aspects should you be aware of? No claims may be made for changes to devices already delivered due to the specifications, illustrations and descriptions in this user manual. -
Page 14: Special Equipment
ICO 72,5...245 USER MANUAL Read first, then take action! Special equipment 1.4.1 Primary reconnection Primary reconnection is possible with current transformers and com‐ bined current and voltage transformers with multiple primary wind‐ ings. Depending on the customer's requirement, it can be carried out in a ratio of 1:1, 1:2 and 1:4. - Page 15 USER MANUAL ICO 72,5...245 Read first, then take action! Connection of the secondary technology at the terminals S1-S2 low primary rated current (small ratio) S1-S3 high primary rated current (large ratio) 12/47...
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Page 16: How To Use This Device As Intended
ICO 72,5...245 USER MANUAL How to use this device as intended 2 How to use this device as intended Important general safety instructions 2.1.1 Working disconnected from voltage During operation, the transformer is live at high voltage. When con‐ nected and not earthed on the high-voltage side, the transformer may be live at high voltage. -
Page 17: Unpacking
USER MANUAL ICO 72,5...245 How to use this device as intended Unpacking Ò Chapter 3.4.1 Transporting the » Observe the notes on transport ( device on page 33) and move the device to the place of use. » Loosen the screw connection and the lashing of the device to the transport frame. -
Page 18: Installation
ICO 72,5...245 USER MANUAL How to use this device as intended Installation 2.3.1 Installing the device Before you start the installation, think about your safety! DANGER High voltage in conductive components There is danger to life through electric shock! Observe the 5 safety rules of electrical engineering. - Page 19 USER MANUAL ICO 72,5...245 How to use this device as intended » Check the composite insulator for damage to and between the insulator shields. If you notice any abnormalities, proceed as Ò Chapter 1.3.5 What should you do in the...
- Page 20 ICO 72,5...245 USER MANUAL How to use this device as intended Cleaning of the contact surfaces » Use a grease-dissolving cleaning agent such as white spirit or acetone. » Use a soft cloth or, if necessary, fine sandpaper to avoid scratching the contact surfaces.
- Page 21 USER MANUAL ICO 72,5...245 How to use this device as intended Fig. 7: Position of the primary terminals on the ICO type current trans‐ former 1 Primary terminals Ensure that the primary conductors are adequately dimensioned: WARNING Thermal stresses due to high contact resistances The transformer can be thermally overloaded by primary conduc‐...
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Page 22: Earthing The Device
ICO 72,5...245 USER MANUAL How to use this device as intended 2.3.2 Earthing the device Establish the earthing connection! Earth the transformer using the earthing bolt holes in the transformer base. For the required tightening torques please refer to the following table: Fig. -
Page 23: Connecting The Device
USER MANUAL ICO 72,5...245 How to use this device as intended Make an electrically conductive connection between the earthing bolts and the earthing point of the switchgear. Ensure there is a clean potential connection at the earthing connection. è The housing is earthed. - Page 24 ICO 72,5...245 USER MANUAL How to use this device as intended Guide the cables on the secondary side through the cable entry on the underside of the terminal box, Fig. 10. WARNING Thermal stresses due to high contact resistances The transformer can be thermally overloaded by connecting...
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Page 25: Commissioning
USER MANUAL ICO 72,5...245 How to use this device as intended Close the terminal box and retighten the cover (ÒM = 1,8 Nm 1,8 Nm). The terminal box cover locks in the correct position. Commissioning Before putting the transformer into operation, check whether all... -
Page 26: Shutdown
ICO 72,5...245 USER MANUAL How to use this device as intended » Do not touch the primary and secondary terminals under any cir‐ cumstances. » Always keep the terminal box closed. » Ensure that the prescribed environmental conditions are main‐... -
Page 27: When To Interrupt The Running Operation
USER MANUAL ICO 72,5...245 When to interrupt the running operation 3 When to interrupt the running operation Cleaning and maintenance 3.1.1 Cleaning the device Check this device regularly for external soiling. Please note before cleaning procedures: CAUTION Cleaning measures are only permitted after the device has been Ò... - Page 28 ICO 72,5...245 USER MANUAL When to interrupt the running operation CAUTION Negligent handling of cleaning agents and preservatives: There is a risk of harm to health from irritant substances. » Protective clothing is required when cleaning. » Wear gloves and protective goggles.
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Page 29: Maintaining The Device
USER MANUAL ICO 72,5...245 When to interrupt the running operation 3.1.2 Maintaining the device The instrument transformer is maintenance-free. To ensure the safety of the transformer, carry out a visual inspection at least once a year: This includes the following steps: Proceed according to the five rules of electrical engineering! Check the pollution level of the transformer. - Page 30 ICO 72,5...245 USER MANUAL When to interrupt the running operation Ò The transformer is operating in Fig. 13: The marker is in the green area the normal range. Ò The transformer Fig. 14: The oil level indicator is in the upper red area is operating at abnormally high pressure and does not operate correctly.
- Page 31 USER MANUAL ICO 72,5...245 When to interrupt the running operation NOTICE Unless there are good grounds for, we advise against any oil investigation. Oil samples should be taken only if circumstances have arisen that might have caused damage to the transformer or if the trans‐...
- Page 32 ICO 72,5...245 USER MANUAL When to interrupt the running operation Fig. 17: Oil drain screw in detail 1 M8 screw, 2 M20 screw, To draw oil from the device, perform the following steps: If this is the first time that an oil sample is to be taken, remove the sealing from the oil drain screw.
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Page 33: Troubleshooting
USER MANUAL ICO 72,5...245 When to interrupt the running operation Please observe the following instructions: » A total of no more than 0.5 litres of oil may be drawn from a transformer over its entire service life. » Oil sampling should only be carried out at temperatures of at least +5 °C. - Page 34 ICO 72,5...245 USER MANUAL When to interrupt the running operation Fault Possible cause Remedy Connecting cable loose Check the secondary terminals, Ò Chapter 2.3.1 No measurement signal Damaged transformer Check transformer and replace if necessary Frequency according to Ò Rating...
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Page 35: Dismantling
USER MANUAL ICO 72,5...245 When to interrupt the running operation Fault Possible cause Remedy Incorrect measurement results Operation outside the specifica‐ due to excessive heating of the tion limits Checking the technical specifica‐ transformer tions limits, Ò Rating plate. Reduced insulation due to exces‐... -
Page 36: Transport And Storage
ICO 72,5...245 USER MANUAL When to interrupt the running operation Transport and storage 3.4.1 Transporting the device NOTICE Transportation and assembly may only be carried out by spe‐ cially qualified persons! Qualified persons are familiar with transportation and assembly in relation to installation and commissioning of the transformer. - Page 37 USER MANUAL ICO 72,5...245 When to interrupt the running operation Transporting and Before lifting, remove the bolts securing the transformer to the lifting in a vertical transport frame. position Attach one hook to each of the two transport eyes on the head housing.
- Page 38 ICO 72,5...245 USER MANUAL When to interrupt the running operation WARNING Danger to risk due to suspended loads Loads can swing out and fall during lifting operations. This can result in serious personal injury or death. » Never stand under suspended loads or in their swing area.
- Page 39 USER MANUAL ICO 72,5...245 When to interrupt the running operation Fig. 20: ICO type current transformer: transporting and lifting in a horizontal position Fig. 21: Standing the ICO type current transformer up 36/47...
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Page 40: Storing The Device
ICO 72,5...245 USER MANUAL When to interrupt the running operation Standing up and Before standing the transformer up, release the bolt in the base moving the trans‐ and then untie the head housing of the transformer. former Attach the hook of the lifting gear to one of the two transport eyes on the head housing. -
Page 41: How We As The Manufacturer Can Help
USER MANUAL ICO 72,5...245 How we as the manufacturer can help 4 How we as the manufacturer can help Repairs The device If you suspect that the device is defective, contact the responsible sales cannot be repaired representative or get in touch with us, the manufacturer, directly Ò... -
Page 42: Technical Data
ICO 72,5...245 USER MANUAL Technical data 5 Technical data Technical data Type ICO 72.5 ICO 123 ICO 145 ICO 170 ICO 245 Highest voltage for oper‐ 72.5 kV 123 kV 145 kV 170 kV 245 kV ating equipment U Dimensions see dimensional drawing Example ICO 145: 350 kg total weight, 65 kg oil weight;... -
Page 43: Environmental Conditions
USER MANUAL ICO 72,5...245 Technical data Type ICO 72.5 ICO 123 ICO 145 ICO 170 ICO 245 Standard values for insulation Rated withstand AC 140 kV 230 kV 275 kV 325 kV 460 kV voltage (50 Hz/1 min.) Rated lightning impulse... -
Page 44: Rating Plate
ICO 72,5...245 USER MANUAL Technical data Rating plate The rating plate shown here contains the type designation of the trans‐ former, the rated data and the name of the manufacturer. Fig. 22: Sample rating plate for the ICO current transformer in the 145 kV version. Subject to modifications. -
Page 45: Circuit Diagram
USER MANUAL ICO 72,5...245 Technical data Circuit diagram The following circuit diagram shows a current transformer with two measuring cores without secondary tapping. The connection abbrevia‐ tions correspond to DIN VDE 0414 and EN 61869-3. The secondary ter‐ minals (1S1 and 2S1) are earthed using a earthing lug. -
Page 46: Technical Illustration
ICO 72,5...245 USER MANUAL Technical data Technical illustration Fig. 24: Sample current transformer of type ICO. Subject to modifications. Primary connection, Aluminium Oil drain screw Transport eyelet: 2x Æ40 mm (above), Earth terminal 4x Æ30 mm (below) Composite insulator Diameter of the drilled hole: 4x Æ18 mm... -
Page 47: Symbols And Abbreviations
USER MANUAL ICO 72,5...245 Symbols and abbreviations 6 Symbols and abbreviations Symbols and abbreviations The following abbreviations have been used in this manual: Abbreviation Explanation The numbers in a list indicate the individual steps of an instruction that follow on from one another è... - Page 48 ICO 72,5...245 USER MANUAL Symbols and abbreviations The mandatory sign "Read instructions for use" solicits attention to this user manual. The two symbols "Wear head protection" and "Use pro‐ tective gloves" are a reminder to wear personal protec‐ tive equipment.
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Page 49: Safety Labels
USER MANUAL ICO 72,5...245 Symbols and abbreviations Safety labels The following symbols and signs may be located on the transformer: Always earth the housing! Fig. 25: Always earth the primary terminal on the earth side! Fig. 26: Always disconnect the device from the power supply before Fig. -
Page 50: Contact / Customer Service
USER MANUAL Contact / customer service 7 Contact / customer service Please contact your sales partner or get in touch with us directly: RITZ Instrument Transformers GmbH Wandsbeker Zollstraße 92 – 98 D-22041 Hamburg Tel: +49 40 511 23 -0 Email: info@ritz-international.com...
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