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TS3
1SDH000670R0002
L3852
30/44
8.6
PR112-PR113 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° 601933502 or 601933503.
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, XK2 and TC connections to the DUT.
Figure 20
8.
In order to set parameters and perform the test, follow the instructions in chapters
7.3
,
7.4
,
7.5
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 or RH0109002 and in the instructions sheet n° 601933502 or 601933503.
Example of test:
Current generation on phase L1
Setting on the trip unit for L, S, I, G protections.
Protection
Curve
Trip
threshold
Trip time
I test
Expected
tripping
time
L
t=k/I
2
I1= 0.4In
t1 = 3s
1.2In
3s
S
t=k
I2=3In
t2 = 0,2s
4In
0,2s
I
I3=5In
7In
60ms
G*
t=k
I4=0.6In
t4 = 0,5s
1In
0,5s
Table 13
* See Note4 in chapter
8