Siemens SIPROTEC 7UT613 series Manual page 68

2 Functions
Object Data with
Generators, Motors
and Reactors
Object Data with
Mini-Busbars,
Branch-Points,
Short Lines (3-
phase)
68
For the winding assigned to side 3, the following data are relevant:
• Address 331 UN-PRI SIDE 3 the primary rated voltage (consider regulating
range),
• Address 332 SN SIDE 3 the primary rated apparent power,
• Address 333 STARPNT SIDE 3 the starpoint treatment,
• Address 334 CONNECTION S3 the winding connection mode,
• Address 335 VECTOR GRP S3 the vector group numeral.
For the winding assigned to side 4, the following data are relevant:
• Address 341 UN-PRI SIDE 4 the primary rated voltage (consider regulating
range),
• Address 342 SN SIDE 4 the primary rated apparent power,
• Address 343 STARPNT SIDE 4 the starpoint conditioning,
• Address 344 CONNECTION S4 the winding connection mode,
• Address 345 VECTOR GRP S4 the vector group numeral.
For the winding assigned to side 5, the following data are relevant:
• Address 351 UN-PRI SIDE 5 the primary rated voltage (consider regulating
range),
• Address 352 SN SIDE 5 the primary rated apparent power,
• Address 353 STARPNT SIDE 5 the starpoint conditioning,
• Address 354 CONNECTION S5 the winding connection mode,
• Address 355 VECTOR GRP S5 the vector group numeral.
The device automatically computes from these data of the protected transformer and
its windings the current-matching formulae which are required to match the vector
group and the different rated winding currents. The currents are converted such that
the sensitivity of the protection always refers to the power rating of the transformer.
In case of different rating of the windings, the rated apparent power of the most pow-
erful winding is the rated apparent power of the transformer. In general, no circuits are
required for matching of the vector group and no manual calculations for converting of
rated current are normally necessary.
Using the 7UT613/63x for protection of generators or motors, the following must have
been set when configuring the scope of functions (see section Functional Scope,
address 105): PROT. OBJECT = Generator/Motor. These settings also apply for
series and shunt reactors if a complete set of current transformers is connected to both
sides. In cases other than that, these settings are not available.
With address 361 UN GEN/MOTOR you inform the device of the primary rated voltage
(phase-to-phase) of the machine to be protected.
The primary rated power set under address 362 SN GEN/MOTOR is the direct primary
rated apparent power of the machine. The power must always be entered as a primary
value, even if the device is generally configured in secondary values. The device cal-
culates the rated current of the protected object and its sides from this power and the
rated voltage. This is the reference for all referred values.
These data are only required if the device is used as 3-phase differential protection for
mini busbars or short lines. When configuring the scope of functions (see Scope of
Functions, address 105), the following must have been set: PROT. OBJECT = 3ph
Busbar. In cases other than that, these settings are not available.
7UT613/63x Manual
C53000-G1176-C160-2