Siemens SIPROTEC 7SD610 User Manual

2 Functions
230
7SD610 Manual
C53000-G1176-C145-4
These indications can be allocated to LEDs or output relays. In the event of three-pole
tripping all three indications are displayed. These alarms are also intended for the trip
command output to the circuit breaker.
If single-pole tripping is possible, the protective functions generate a group signal for
the local display of fault indications and for the transmission of the indications to a PC
or a central control system, e.g. for single-pole tripping by differential protection „Diff
TRIP 1p L1“, „Diff TRIP 1p L2“, „Diff TRIP 1p L3“ and „Diff TRIP
L123“ for three-pole tripping; only one of these messages is displayed at a time.
Single-pole tripping
for two-phase faults
Single-pole tripping for two-phase faults is a special feature. If a phase-to-phase fault
without earth
occurs in an earthed system, this fault can be cleared by single-pole trip
and automatic reclosure in one of the faulted phases as the short-circuit path is inter-
rupted in this manner. The phase selected for tripping must be the same at both line
ends (and should be the same for the entire system).
The setting parameter Trip2phFlt (address 1156) allows to select whether this trip-
ping is to be 1pole leading Ø, i.e. single-pole tripping in the leading phase or
1pole lagging Ø, i.e. single-pole tripping in the lagging phase. Standard setting is
3pole tripping in the event of two-phase faults (default setting).
Table 2-9 Single-pole and three-pole trip depending on fault type
General Trip All trip signals for the protective functions are connected by OR and generate the
message „Relay TRIP“. This can be allocated to LED or output relay.
Type of Fault
(from Protection Function)
Parameter
Trip2phFlt
Output signals for trip
TRIP 1p.L1 TRIP 1p.L2 TRIP 1p.L3 Relay TRIP 3ph.
L1 (any) X
L2 (any) X
L3 (any) X
L1 E (any) X
L2 E (any) X
L3 E (any) X
L1 L2 3pole X
L1 L2 1pole leading Ø X
L1 L2 1pole lagging Ø X
L2 L3 3pole X
L2 L3 1pole leading Ø X
L2 L3 1pole lagging Ø X
L1 L3 3pole X
L1 L3 1pole leading Ø X
L1 L3 1pole lagging Ø X
L1 L2 E (any) X
L2 L3 E (any) X
L1 L3 E (any) X
L1 L2 L3 (any) X
L1 L2 L3 E (any) X
E (any) X
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Siemens SIPROTEC 7SD610 Specifications

General

Brand	Siemens
Model	SIPROTEC 7SD610
Category	Relays
Language	English