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90158-1.08 Instruction Manual Multiplexer

Page 22 of 40

5 Using Multiplexer Software

Raytech Multiplexers are fully controlled by a Raytech Winding Resistance Meter, or its
remote interface.

NOTE

⇒

Please Make sure, your Winding Resistance Meter Firmware is ready

to control a Multiplexer. If it is not ready or if you are not sure, please
read Chapter ‘7 Firmware update’.

5.1 Configure your Multiplexer Setup

A Raytech Winding Resistance Meter can control up to three Multiplexers. It will
automatically detect how many Multiplexers are connected, and which Multiplexer addresses
are available. The allocation of Multiplexers to Winding Resistance Meters channels is done
by the user individually, to get the best fit for your needs.

When connecting a Multiplexer for the first time to a Winding Resistance Meter, you will find
the following indication on the bottom of its touch panel:

This ‘Mux’ surrounded by a red line indicates, that Multiplexers are found, but the
configuration is not complete yet. Please see the following chapter, to get an overview of all
Multiplexer indications.

Indication

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Содержание MUX R

Страница 1: ......

Страница 2: ...4 5 Multiplexers Tap Changer Interface 20 4 5 1 General Description 20 4 5 2 Pin Assignment and Schematic of Tap Changer Interface 21 5 Using Multiplexer Software 22 5 1 Configure your Multiplexer Se...

Страница 3: ...of all high voltage apparatus while conducting tests and measurements GROUND THE MULTIPLEXER To minimize shock hazard the multiplexer chassis and cabinet must be connected to a properly grounded recep...

Страница 4: ...per transformer including Winding Resistance and Turns Ratio Uses up to three Multiplexers and measure transformers with three winding systems with one cabling sequence Get your own configuration con...

Страница 5: ...ple in chapter 2 2 Example Block Diagram would be set up with Multiplexers and Raytech devices In later Chapters this kind of diagram will be used to illustrate several Multiplexer Setups NOTE A compl...

Страница 6: ...n Manual Multiplexer Page 6 of 40 3 Overview 3 1 Front 3 2 Back NOTE Multiplexers do not need a Main Power Switch They will automatically be switched on when the controlling Winding Resistance Meter s...

Страница 7: ...hat s only a part of what is doable and thought to give you an impression of the benefits a System based on Raytech Multiplexers offers to you A complete system based on Raytech equipment is called Au...

Страница 8: ...er test In the example shown the high voltage side is ready to be measured Because of the delta configuration of the primary windings H1 H2 H2 H3 and H3 H1 will be measured H0 cables are not used Afte...

Страница 9: ...cable Nr Cable Type Order Nr Connect on Mux to Connect on WR to 1 Option Cables 30493 100 Option In Out Option Out Continue with connecting Current and Potential Cables Nr Cable Type Order Nr Connect...

Страница 10: ...90158 1 08 Instruction Manual Multiplexer Page 10 of 40 4 2 Case 2 One WR one TR and two Multiplexers 4 2 1 Schematic Diagram...

Страница 11: ...mary and a secondary winding with two different currents at the same time Of course transformers with a tertiary winding system can also be measured To measure third windings resistances and TR H Y co...

Страница 12: ...on Mux to Connect on TR to 3 Standard TR cable 30015 100 TR H Continue with connecting Current and Potential Cables Nr Cable Type Order Nr Connect on Mux to Connect on WR to 4 Sense Cable blue green 3...

Страница 13: ...90158 1 08 Instruction Manual Multiplexer Page 13 of 40 4 3 Case 3 Two WR one TR and two Multiplexers 4 3 1 Schematic Diagram...

Страница 14: ...me when doing both winding systems at time because the core will be energized by the primary winding system Saturation can be reached easier with a current flowing on the primary side because it usual...

Страница 15: ...ble Type Order Nr Connect on Mux to Connect on TR to 3 Standard TR cable 30015 100 TR H Go on with connecting Current and Potential Cables Nr Cable Type Order Nr Connect on Mux to Connect on WR to 4 S...

Страница 16: ...90158 1 08 Instruction Manual Multiplexer Page 16 of 40 4 4 Case 4 Two WR one TR and three Multiplexers 4 4 1 Schematic Diagram...

Страница 17: ...g system Usually it is not necessary as secondary and tertiary windings are very similar It can be measured in series and you can safe one WR meter Raytech TR Mark II III will on X side be connected t...

Страница 18: ...nnect TR and T Rex to Multiplexer NOTE If there is no T Rex in your system connect cables from Multiplexer directly to TR MARK III Nr Cable Type Order Nr Connect on Mux to Connect on TR to 3 Standard...

Страница 19: ...on with connecting Current and Potential Cables Nr Cable Type Order Nr Connect on Mux to Connect on WR to 5 Sense Cable blue green 30492 100 Channel Channel 6 Current Cable black 30491 100 Current Cu...

Страница 20: ...ally open 250V 3A 2 relay contacts normally open 60V 3A 2 digital in prepared for tap changer use 2 digital in ready for general use 2 digital out darlington open collector to control external relays...

Страница 21: ...DO names digital outputs Use RE12 and RE13 to switch heavy loads like a powerful tap changer actor Use RE10 and RE11 to switch loads up to 60V 3A TC in 1 and TC in 2 are digital inputs proposed to be...

Страница 22: ...control up to three Multiplexers It will automatically detect how many Multiplexers are connected and which Multiplexer addresses are available The allocation of Multiplexers to Winding Resistance Met...

Страница 23: ...keep the corresponding channel as a non multiplexed channel Auto Setup will bring any detected Multiplexer in to ascending order to channel number This Indication shows that the specified Multiplexer...

Страница 24: ...e see 90163 X XX Instruction Manual WR XX Rack or 90164 X XX Instruction Manual WR XX for detailed information about transformer profiles 5 3 Controlling a Multiplexer When a multiplexer is connected...

Страница 25: ...r with a dot matrix is opened This is the way to switch a winding resistance meter to any test object It s recommended when the device under test is no transformer The following page shows how this sc...

Страница 26: ...configuration Rows show where positive WR connections are switched to while columns show where negative connections are switched to In the example above positive current sense is switched to H2 and ne...

Страница 27: ...ration appears By touching a configuration can be selected and Multiplexers will be switched automatically Of course also here the button can be touched as described in chapter 5 3 1 Multiplexer Menu...

Страница 28: ...plexer A Secondary and Tertiary winding system is measured by a second WR and Multiplexer B and C To keep the following schematics simple only current paths are drawn One of the WR channels potential...

Страница 29: ...ss Choose Off in the Multiplexer control screen Config If you have a look to chapter 9 A look under the hood you will find the relay that shortens the current terminals In Bypass mode this relay is cl...

Страница 30: ...control if turns ratio is measured primary to secondary TR A B or primary to tertiary TR A C winding system 2 Switch Mux B and C to TR All Multiplexers that are connected to the same Winding Resistan...

Страница 31: ...ng to test object Labels are located near plugs and clamps of cables Example Clamp end of cable to test object Color scheme for Multiplexers Color scheme for phases Multiplexer A yellow Multiplexer B...

Страница 32: ...r firmware has to be updated if you are using a version below 2 5 4 0 And it should be updated if you are using an older version than 2 7 0 0 Only this and newer versions will provide all the Multiple...

Страница 33: ...version or update to a new firmware follow the procedure below NOTE Only a Multiplexer A WRMUX A can be updated You may have to change cabling to do that Connect only one Multiplexer to the commandin...

Страница 34: ...Page 34 of 40 Connect a USB Memory Stick containing the new firmware version in its root directory to the controlling WR Touch the button Update Firmware to get to the update screen Chose your firmwar...

Страница 35: ...een To make sure your work is not interrupted you will never be forced to start a cleaning cycle A complete cleaning cycle will switch Multiplexers relays in a defined order and timing under at ideal...

Страница 36: ...tiplexer indication on the bottom right of the Winding Resistance screen Touch it and you will get to the Multiplexer Setup Screen shown bellow This screen is already known from chapter 5 1 2 Multiple...

Страница 37: ...1 08 Instruction Manual Multiplexer Page 37 of 40 Stopps a running cleaning cycle Starts a cleaning cycle Shows relevant information for cleaning of selected Multiplexer Leads back to main menu Shows...

Страница 38: ...look under the hood To give you a better understanding of what Multiplexer really is see the following schematic diagram In a way a Multiplexer is a micro controller based relay box containing feature...

Страница 39: ...AC Mech Relais Life Min 1 000 000 cycles Insertion Error Less than 0 01 11 Accessories Standard Complete Cable Set Cable Labels Optional Customized Cable Set Integrated Safety Unit ISU 1 DUT Device Un...

Страница 40: ...ro is a powerful software to remote control Raytech test instrument data exchange and analyse measured data of it A complete customised system including as many Multiplexers Winding Resistance Meters...

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