ABB Relion 650 Series Commissioning Manual page 86

Section 7
Testing functionality
Values of the logical signals for SMBRREC (79) are available on the local HMI under Main menu/
Tests/Function status/Control/SMBRREC(79,0->1)/X:SMBRREC. The Signal Monitoring in
PCM600 shows the same signals that are available on the local HMI.
The purpose of verification before commissioning is to check that entered selections, setting
parameters and configuration render the intended result. The function is flexible with many
options and facilities. At commissioning only the selections and settings intended for use are
verified. If one chooses to reduce some time settings in order to speed up verification, be careful
to set the parameters at intended operational values at the end of the verification procedure. One
such parameter is the
shot 2 and later ones.
The verification test is performed together with protection and trip functions. Figure
a suggested testing arrangement, where the circuit-breaker (CB) is simulated by an external bi-
stable relay (BR), for example a relay type RXMVB2 or RXMD or Breaker Simulator of ABB. The
following manual switches are used:
• Switch or push-button to close (SC)
• Switch or push-button to trip (ST)
• Switch for CB ready condition (SRY)
If no bi-stable relay or breaker simulator is available, replace it with two self-reset auxiliary relays
and use a self-holding connection.
Use a secondary injection IED test set to operate the protection function. The test set shall be
switched off when a trip signal is given or when the BR comes to open position to simulate real
conditions.
The CB simulation can be made more elaborate, including simulation of the operating gear
condition, CBREADY of either the type ready for a Close-Open (CO) cycle, or the type ready for an
Open-Close -Open (OCO) cycle.
The CB condition CBREADY of a type, CO, shall be high (true) until a closing operation is
performed. It then goes low (false) for a recharging time of about 5 - 10s. After that it is high
again.
A CB condition CBREADY of a type, OCO shall be high (true) before and during tripping (Initiate
reclosing). During tripping it goes low for a recharging time, for example, 10s. It may thus be low
at the instant of reclosing. After each Open or Close operation it may need a recharging period
before it goes high again.
In the example of CB simulation arrangement, the CBREADY condition is simulated by a manual
switch, SRY.
Information and material for the verification:
• Protection or control unit, IED, configured and with settings entered.
• Configuration diagram for the IED
• Terminal diagram for the IED, or plant circuit diagram including the IED
• Technical reference manual for the IED
• IED test set for secondary injection
• Means to indicate, measure and record operation and times, for example an event recording
facility
80
tReset time and could result in a long delay of reclosing shots, for example,
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1MRK 505 268-UUS A
14 illustrates
Breaker protection REQ650
Commissioning manual