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GHIELMETTI AG –  7UW50 -  Technische Dokumentation 

ROR/09.02.2021 

Page 12 of 19 

13.3

 

Test and commissioning 

13.3.1

 

General 

Prerequisite  for  commissioning  is  the  completion  the  preparation  procedures  in  capture  Fehler! 
Verweisquelle konnte nicht gefunden werden.

Warning :  Hazardous  voltages  are  present  in  this  electrical  equipment  during  operation.  Non-
observance of the safety rules can result in severe personal injury or property damage. 

Only  qualified  personnel  shall  work  on  and  around  this  qquipment  after  becoming  thoroughly 
familiar  with  all  warnings  and  safety  notices  of  this  manual  as  well  as  with  the  applicable  safety 
regulations. Particular attention must be drawn to the following: 

 

The earthing screw of the device must be connected solidly to the protective earth con-
ductor before any other connection is made. 

 

Hazardous voltages may be present on all circuits and components connected to the 
supply voltage or to the control signals 

 

Hazardous voltages may be present in the device even after disconnection of the supply 
voltage (storage capacitors!) 

 

The limit values given in the Specifications (section 15) must not be exceeded at all, not 
even during testing an commissioning 

13.3.2

 

Tripping test 

Warning  :  Primary  tests  shall  be  performed  only  by  qualified  personnel  wich  is  trained  in 
commissioning of protection systems and familiar 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 
supervision relay which energizes the related matrix input (column). The corresponding switching 
elements (master relays, circuit breaker coils) will be energized by the outputs (rows) of the matrix 
device,  in  accordance  with  the  settings  of  the  diode  plugs  of  the  cross-bar  distributor.  The  LEDs 
assigned to the columns and rows under test must be illuminated and remain illuminated (latched). 
In addition, the common trip indication must appear. All stored indication disappear after pushing 
the “RESER” button on the front of the device. 

Warning : After output of the trip command the switching device will be operated. Ensure before 
each test, that switch-ing is permissible under the actual switchgear condi-tion. E.g. isolate circuit 
breakers by opening the disconnectors at both sides. 

Caution : The terminal limit of 1 A of the control inputs must be observed. When more than one 
control  input  is  subjected  to  the  max.  permissible  continuous  current,  overload  and  damage  can 
result.  Therefore,  these  test  must be short-term  tests.  Observe  a  cooling-down period  after  each 
test. 

13.4

 

Making ready for service 

Marshalling of the trip commands should be checked again, in case they were altered during the 
tests. 

Stored indications on the front plate should be reset by pressing the push-button "RESET LED" on 
the front so that from then on only real faults are indicat-ed. 

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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