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8.5 PR111 trip unit functional test
1.
Prior to operate and / or carry out any replacements on the CB, this must be open, with discharged spring and
disconnected
2.
Remove the Trip unit ( DUT ) from the CB following the instructions in the installation manual of the CB n°
RH0228002 ÷ RH0228005 or RH0109002 and in the instructions sheet n° 601933501.
3.
Take note of the settings present on the trip unit ( DUT ); these settings must be reset after the test.
4.
Set the current and time values for the protection available on the DUT.
5. Connect the extension cable to TS3.
6.
Connect the PR11x test cable to the extension cable.
7.
Connect the XK1 and TC connections to the DUT.
8. In order to set parameters and perform the test, follow the instructions in chapters 7.3, 7.4,
9.
Verify that the tripping time indicated in the TS3 display is corresponding to the expected one, as indicated in the
instruction manual of the CB n° RH0228002 ÷ RH0228005 or RH0109002.
10. In case of changing of settings, insert the beginning value of threshold and time.
11. Reinstall the trip unit ( DUT ) on the CB as indicated in the instruction manual of the CB n°RH0228002 ÷
RH0228005 and in the instructions sheet 601933501.
Example of test:
Current generation on phase L1
Setting on the trip unit for L, S, I, G protections.
Protection
L
S
I
G*
Table 12
* See Note4 in chapter
8
888.902.6111
Figure 19
Trip
Curve
threshold
2
t=k/I
I1= 0.4In
t=k
I2 = 3In
I3 = 6In
2
t=k/I
I4 = 0.8In
TS3
1SDH000670R0002
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|
Expected
Trip time
I test
tripping
time
t1 = 6s
2.4In
6s
t2 = 0.25s
4,5In
0,25s
60ms
8In
t4 = 0,8s
1,2In
0,96.s
7.5
L3852
29/44
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