Areva MiCOM P441, Technical Manual

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Commissioning P44x/EN CM/E33
MiCOM P441/P442 & P444 Page 29/54
5.3.1.3 Control & Test of starting characteristics
IN THIS PART – TESTS ARE DESCRIBED WITH THE DEFAULT
PARAMETERS (AREVA T&D EAI )
Open the file corresponding to the MiCOM characteristic. (see item :test tools/S1 user) If
none change have been achieved, we get those values (Zgraph screen):
W0008ENa
FIGURE 13
Control of single-phase fault characteristic’
CAUTION : IF DIFFERENT K0 ARE USED – SEE § 5.3.1.2
1. Energise MiCOM P440 with a healthy 3phase network (without unbalanced condition)
with load (during a minimum time of 500 msec). This is for:
– Enabling the use of deltas algorithms
– Avoiding the start of SOTF logic (see SOTF logic description in P44x /EN AP)
2. Reduce the current value to obtain a relation between V et I following the attached
table (For Rlim – phase-shift at 0°, for Z limit – phase-shift corresponding to Z1 (in
multiphase default) or corresponding to 2Z1+Z0 (in single fault).
3. Check that the tripping order (DDB: Any trip / Any Trip A/ Any Trip B/ Any Trip C – see
in the chapter AP section 6.3 ”output contact mapping”, the description of DDB for
models 01 to 06) is transmitted when the concerned zone time delay is issued.(For
distance scheme with transmission and all distance trip logic see in P44x /EN AP).
NOTE : The DDB signal any Trip A is a OR gate between
Ext Trip A
Int Trip A
4. See as well the test report model provided in chapter RS Test tools.
5. Control also in the PSL (programmable scheme logic) the tripping orders addressing
(Any Trip is linked by default to the relay 7).
By default: see the wiring diagram in chapter CO (for assignment of inputs/outputs).
Usefultip: - For controlling the logic level of internal datas (DDB cells), all or part of the 8 red
led in the front panel could be assigned using the PSL.