Trip/Close Tests For Primary Equipment - Siemens SIPROTEC 7SJ62 Instruction Manual
Multi-functional protective relay with bay controller
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- Manual (704 pages) ,
- Technical data manual (58 pages) ,
- Manual (72 pages)
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Installation and Commissioning
Ending the
Procedure
8.3.9
Trip/Close Tests for Primary Equipment
Control by Local
Command
Trip/Close Cycle by
Protective Function
8-28
− for each component, if a command to change the condition is successfully per-
formed,
− for all hardware components if the 8SGDWH field is clicked,
− for all hardware components with cyclical updating if the $XWRPDWLF 8SGDWH
VHF field is marked.
To end the hardware test, click on &ORVH. The device becomes unavailable for a brief
start-up period immediately after this. The dialog box closes. Then all hardware com-
ponents are returned to the operating conditions.
At the end of commissioning, actual 7SJ62 tripping and closing should be verified for
all the relevant circuit breakers and primary switching devices. The feedback of the
status of the primary equipment, through the equipment's auxiliary contacts to the bi-
nary inputs of the 7SJ62, should be checked during the testing. Be sure the 7SJ62 al-
ways indicates the true position of the equipment in the device messages.
The procedure for the control is described in Sub-section 7.3.1. Make sure that the
switching authority is set according to the source of commands that is used. The
switching mode can be chosen as interlocked or non-interlocked. Note that non-inter-
locked switching presents safety risks.
Tripping of the primary equipment by protective elements can be verified if desired.
However, be fully aware that such testing can result in closing of the circuit breaker by
the reclosing element in the 7SJ62 or an external reclosing device. If circuit breaker
closing is to be avoided, be sure the closing is defeated before the test is performed.
If reclosing is desired, select an element in the 7SJ62 that initiates reclosing, and test
the control by tripping this element in the testing. To avoid a trip-close-trip event, be
sure the protective element is dropped out before the close occurs.
DANGER!
A successfully started test cycle can lead to the closing of the circuit breaker!
7SJ62 Manual
C53000-G1140-C121-1
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