Siemens 7SV512 - 6.7 Commissioning using primary tests

Operating instructions7SV512
V1
C53000---G1176---C91
102
6.7 Commissioning using primary tests
All secondary testing sets and equipment must be
removed. Reconnect current andvoltage transform-
ers. For testing with primary values the line must be
energized.
Primary tests shall be performed only
b
qualified personnel which is trained
commissioning of protection systems a
n
familiar with the operation of the protect
e
object as well as the rules and regulatio
n
(switching, earthing, etc.)
!
Warning
Because of the variety of application possibilities
and possible switch-gear configuration, a detailed
description of the applicable tests is not possible.
The most important thing is that the local circum-
stances and the switch-gear and protection dia-
grams are observed.
It is recommended that the local circuit breaker of
thefeeder under testis isolated atbothsides, i.e.the
bus-bar disconnector(s) and the line disconnector
must be opened. Thus, switching of the circuit
breaker is possible without danger.
Caution!
!
The protection relay will issue bus-bar trip
command even during tests on the local
feeder breaker. The trip signal to the adja-
cent circuit breakers of the bus-bar should
be made ineffective, e.g. by switching offof
the corresponding control voltages.
The trip command of the feeder protection to the lo-
calfeeder circuitbreaker isalsointerrupted until final
completion of the tests in order to ensure that only
the breaker failure protection can trip this breaker.
The following lists do not claim to cover all possibili-
ties. On the other hand, they may contain items that
can be bypassed in the actual application.
6.7.1 Checking the initiation condi-
tions
All possible initiation conditions must be checked.
The following hints presuppose that at least the
binary inputs INPUT 8, INPUT 9, and INPUT 10 are
allocated to the input functions as delivered, so that
they are included inthe trip release monitoring ofthe
device.
The annunciation ”BFP-Pickup” (FNo 472) must
appear each time the beaker failure protection is ini-
tiated. When the relay is delivered, this annunciation
is not allocated to any output relay or LED,but it ap-
pears ”Coming” and ”Going” in the operational an-
nunciations (address 5100, refer to Section 6.4.2).
Atfirst, ensure thatthefeeder circuitbreaker isopen.
a) Initiation by single-pole trip command L1 of the
feeder protection:
Binary input functions ”>Trip L1”, ”>Trip”,
”>Start”, and ”>Start N” (if used) are trig-
gered.
b)Initiation by single-pole trip command L2 of the
feeder protection:
Binary input functions ”>Trip L2”, ”>Trip”,
”>Start”, and ”>Start N” (if used) are trig-
gered.
c) Initiation by single-pole trip command L3 of the
feeder protection:
Binary input functions ”>Trip L3”, ”>Trip”,
”>Start”, and ”>Start N” (if used) are trig-
gered.
d)Initiation bythree-pole tripcommand ofthe feeder
protection:
Binary input functions ”>Trip L1”, ”>Trip
L2”, ”>Trip L3”, ”>Trip”, and
”>Start”, are triggered.
e)Initiation by three-pole trip command of a three-
pole feeder protection (e.g. overvoltage protec-
tion):
Binary input functions ”>Trip 3 pole”,
”>Trip”, and ”>Start”, are triggered.
De-energize all binary inputs.
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