Configuration of NOC3High protection will be done with „Relay configuration tool“ application. NOC3High means „non-directional overcurrent 3-phase high stage“ protection. The configuration procedure is the same as the configuration of measurements (see article no. 7 “CAP505-measurements configuration”). More detail about function block NOC3High you can read in manufacturer‘s ABB manual „NOC3High_ High-Set Stage (NOC3High) 1MRS752309-MUM“.  We‘ll also connect this protection to first LED of PLC REF543 to indicate tripping of this protection. Settings of NOC3High protection will be defined by using „Relay Seting Tool“. When configuration and settings of NOC3High protection are completed, we will send configuration and settings to PLC REF543. The final step is to store configuration and settings to EEPROM by using „Store“ command. The testing procedure will answer either configuration of protection is correct or not.

Pay attention that in this article we won‘t connect tripping of protection NOC3High to binary output. This connection will be done later (see article no. 18 “CAP505 Control configuration and time testing of protection“), when several protections will be configured. All these protections will be connected to the same binary ouput.

Now we‘re going to begin configuration.

1. Select project object (in my case „IC-1“). Run “Relay Configuration Tool” application:

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2. In project configuration tree select program unit “Protect” and open it:

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3. In window “Graphic: Protect” insert function block of NOC3High protection:

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Settings of function block NOC3High:

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4. Connect already created variables IL1, IL2, IL3 to function block NOC3High as shown in pictures:

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5. Create new variables of “boolean” type with names „NOCHighStart“ and „NOCHighTrip“. Connect them to function block NOC3High as shown in picture:

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Save configuration by selecting „File>Save“ and exit from program “Protection” by selecting „File>Exit“.

6. Now I‘m going to configure signalization of protection „NOC3High“. In project configuration tree select program unit „Signal“ and open it:

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In “Graphic: Signal” window insert signalization function block “MMIALAR1”:

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Function block “MMIALAR1” is used to connect tripping signal of protection NOC3High to PLC‘s REF543 first LED:

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More detail about function block “MMIALAR1” you can read in manufacturer‘s ABB manual „MMIALAR_ Alarm (MMI, remote) 1MRS752355-MUM”.

7. Connect variable NOCHighTrip to function block “MMIALAR1”:

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Save configuration by selecting „File>Save“ and exit from program “Signal” by selecting „File>Exit“.

The configuration is completed. Compile this configuration by using command „MAKE>MAKE“.
After successful compilation close „Relay configuration tool“ application by selecting „File>Exit“.

8. Now we need to identificate first LED as tripping signal of protection NOC3High.
Run “Relay Mimic Editor” tool:

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9. In „Relay Mimic editor“ window press button “Alarm LED Texts”:

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10. Type name for first LED (I’ll type „NOCHighTrip“). In „ON state“ window set LED‘s color as red and state as „Latched, steady“:

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„Latched, steady“ state means that LED will be activated when will trip NOC3High protection (signal NOCHighTrip), and LED will be activated until manual resetting of this protection.

There are others states of LED:

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When „Nonlatched, steady“ state is selected, the LED will be activated only when NOC3High protection is active. When protection NOC3High automatically resets, LED will also be resetted automatically. In this case you don‘t need manually to reset LED.
“Latched, blinking” state, is the same as „Latched, steady“ state, the difference is only that LED won‘t light continuous but it will blink continuous.

11. Save and exit „Relay Mimic Editor“ tool:

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Press “Yes”:

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12. Now we‘re going to set parameters of protection NOC3High by using „Relay Setting Tool“ application. Run „Relay Setting Tool“ application:

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13. In “Relay Setting Tool” window select “Protection”>” NOC3High”>”Setting group” and define settings as shown in picture:

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In “Operation mode” you can select current characteristic of protection NOC3High.
“Definite time” – current characteristic which does not depend from current magnitude value. When current reaches setting 1xIn (parameter „Start current“), protection NOC3High will trip simultaneously. Here parameter In is nominal current of PLC analogue input. Parameter “Operate time” is time after which protection NOC3High will trip. We define this time to 0,05 s.

14. Select “Protection”>” NOC3High”>”Controll Setting” and set parameters as shown in picture:

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In “Event mask1” window set parameters as shown in picture, others “Event mask2, 3, 4” settings are analogous:

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Every function block has its own event list. By selecting options in “Event mask1” window we can to reduce event list.

Save defined parameters by selecting „File>Save“ and close „Realy Setting Tool“ application.

15. Sending configuration of protection NOC3High to PLC REF543:

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Store sended configuration by using „Store“ command.

 

Exit from „Relay Download Tool“ by selecting „File>Exit“.

 

 

16. Sending settings of protection NOC3High to PLC REF543:

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Storing settings to EEPROM memory of PLC REF543:

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Exit from „Relay Setting Tool“ tool by selecting „File>Exit“.
Now I‘m going to test protection NOC3High.

17. Settings of protection NOC3High: I=1xIn=1x5A=5A (see parameter „Start current“ particle no.13 of this article).

Testing principle scheme is the same as in article no.11 „CAP505-Testing-measurements“:

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Supply from testing equipment only such currents:
Ia=5,1A, IB=5,1A, Ic=5,1A; φa=0º, φb=240º, φc=120º

18. The first LED light steady. HMI of PLC REF543:

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19. The first LED indicate, that protection NOC3High tripped (title „NOCHighTrip“):

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Also we can fix tripping time of protection NOC3High (month, day and time).

20. HMI indicate current’s magnitude: 2036 A. I‘m going to calculate mathematically or this magnitude is correct:

Ist x kTT = Ih

5,1A x 400 = 2040A

here Ist – supplying current from testing equipment
kTT – scaling factor of current transformer (kTT=2000/5=400)
Ih – flowing current on HMI

Conclusion: magnitudes of currents measurements are correct.

In all such cases
a) Ia=5,1A, IB=0A, Ic=0A; φa=0º, φb=240º, φc=120º
b) Ia=0A, IB=5,1, Ic=0A ; φa=0º, φb=240º, φc=120º
c) Ia=0A, IB=0A, Ic=5,1A; φa=0º, φb=240º, φc=120º
d) Ia=5,1A, IB=5,1, Ic=5,1A; φa=0º, φb=240º, φc=120º

protection NOC3High tripped simultaneously.

21. On HMI you can check event list of protection NOC3High:

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Always when protection tripped, there light 3 LEDS: green, yellow and red.

Green LED is indicating that PLC has supply voltage.
Yellow LED light when protection started.
Red LED is indicating tripping of protection NOC3High.

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More detail about function block “MMIALAR1” you can discover in manufacturer‘s ABB manual “MMIALAR_ Alarm (MMI, remote) 1MRS752355-MUM”.
About function block NOC3High read in manufacturer‘s ABB manual „NOC3High_ High-Set Stage (NOC3High) 1MRS752309-MUM“.

Pay attention that in this article we won‘t connect tripping of protection NOC3High to binary output. This connection will be done later (see article no. 18 “CAP505 Control configuration and time testing of protection“), when several protections will be configured. All these protections will be connected to the same binary output.

In the next article I‘ll configure and set protection NOC3inst with voltage UV3Low blocking.