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GHIELMETTI AG –  7UW50 -  Technische Dokumentation 

ROR/09.02.2021 

Page 5 of 19 

trip  outputs  of  individual  protection  devices  with  plant  items  such  as  the  circuit-breakers,  de-
excitation  etc.  The  matrix  was  developed  for  marshalling  tripping  commands  of  large  power 
stations.  With  its  help,  the  tripping  schematic  can  be  temporarily  changed,  e.g.  in  case  of  a 
generator circuit- breaker revision. If the software matrix incorporated in each generator protection 
unit is used for marshalling the tripping commands, the marshalling in the protection units must 
be changed for this purpose. 

The tripping matrix assigns the tripping signals arriving at the matrix columns (from the solid-state 
protection  relays)  to  the  freely  programmable  matrix  lines  to  which  the  tripping  modules  are 
connected 

 

8

 

Mode of Operation 

The tripping matrix GKV 7UW50 has 2x14 columns (for 28 signals from protection units) and 10 
rows (for 10 signals to tripping modules). High reliability diode plugs (black handle) are used for 
programming  the  matrix,  the  reliability  being  attained  by  generous  over-rating  with  respect  to 
forward current and reverse voltage. 

The diode plugs are inserted from the front and enable any vertical column (signals from the protec-
tion relays) to be connected to any horizontal line so that the tripping signals can be transmitted 
to the tripping module. Each column has a LED for indicating tripping commands.  

The  display  is  stored.  Each  additional  outgoing  tripping  command  received  additionally  sets  a 
group memory, which, for example, can be used for remote signalling and switching a cubicle lamp. 
All signals remain stored even when the tripping channels are interrupted or when the red central 
connecting plug is removed. 

The memories can be reset directly by a push-button "Reset" or by remote reset. Also the function 
of all LED’s may be checked by pressing the "Reset" button. The power supply of the relays and 
memory  functions  is  250VDC  and  feed  an  additional  5  VDC  voltage  for  the  LED  function.  The 
monitoring of the power supply is done by two relay contacts. 

Optional: A lockable acryl-glass-cover inhibits unauthorised access to the programming matrix. 

 

 

Summary of Contents for 674.114.913.02

Page 1: ...Tripping matrix for Generator Protection Systems GKV 2x11x14 621 SSK 7UW50 250 VDC Part No 674 114 913 02 Manual Edition 04 2020...

Page 2: ...ecting the Tripping Matrix 8 11 1Auxiliary output screw mount connectors 9 12 Installation instruction 10 12 1Unpacking and repacking 10 12 2Preparations 10 12 2 1Mounting and connections 10 12 2 2Che...

Page 3: ...formance at the factory according to the specifications given for the system in this manual However before putting the device into operation we kindly ask you to read this manual and act according to...

Page 4: ...rvicing adjustments maintenance or repair of this product may be performed by qualified personnel only 6 Disclaimer This instruction manual does not purport to cover all details in equipment nor to pr...

Page 5: ...le are used for programming the matrix the reliability being attained by generous over rating with respect to forward current and reverse voltage The diode plugs are inserted from the front and enable...

Page 6: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 6 of 19 9 Block Diagram...

Page 7: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 7 of 19 10 Control elements of the Tripping Matrix 10 1 Connecting and Diode plugs...

Page 8: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 8 of 19 11 Interconnecting the Tripping Matrix...

Page 9: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 9 of 19 11 1 Auxiliary output screw mount connectors...

Page 10: ...the relay shall be situated in the operating area for at least two hours in order to ensure temperature equalization and to avoid humidity influences and condensation 12 2 Preparations The operating c...

Page 11: ...t most 0 5s The unit faulty alarm contact of the auxiliary supply circuit must disappear after at most 1s the current consumption data given in the Specifications Open the circuit breaker for the DC p...

Page 12: ...with the operation of thw protected object as well as the rules and regulations switching earthing etc In order to test the tripping circuits a control command must be given from a protection or super...

Page 13: ...of 19 During pushing the RESET button the LEDs on the front will light up thus a LED test is performed at the same time The green LED 15V on the front must be on All terminal screws even those not in...

Page 14: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 14 of 19 14 Dimensions 14 1 Front view...

Page 15: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 15 of 19 14 2 Back view...

Page 16: ...GHIELMETTI AG 7UW50 Technische Dokumentation ROR 09 02 2021 Page 16 of 19 14 3 Side view...

Page 17: ...ity make break 20 VA Switching voltage 250 VAC DC Permission current 0 1 A 250 VDC Matrix Number of columns inputs 2x14 Number of input indication LED 28 Number of rows outputs 10 Number of output ind...

Page 18: ...ousing cover Warning Hazardous voltages can be present in the device even after disconnection of the supply voltage or after removal of the module from the housing storage capacitors Caution Electrost...

Page 19: ...9 SWITZERLAND GHIELMETTI AG Head Office Switzerland 41 32 671 13 13 Phone 41 32 671 13 14 Fax info ghielmetti ch www ghielmetti ch GERMANY GHIELMETTI AG Office Germany 49 3371 402 754 Phone 49 3371 61...

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