ABB REX 521, Техническое справочное руководство, стандартные конфигурации

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1MRS751802-MUM REX 521
75
Protection Relay
Technical Reference Manual, Standard Configurations
5.1.13. Time synchronization
Digital input 9 can be used as a GPS time synchronization input.
5.1.14. AR inhibit, AR on input, start AR
Auto-reclosure function O->I can be started, inhibited or turned on via DI1...DI9.
1
5.1.15. BACTRL (Basic angle control)
The basic angle of the directional earth fault protection depends on the earthing
principle of the network. Basic angle can be changed via control signal BACTRL.
1
Logic input 1...3
The logical inputs 1...3 are part of the interlocking options for close enabling of the
breaker. These signals can be connected to any of the digital inputs DI1...DI9 and
they can get indication from such signals as SF6 gas alarm, spring charge etc. (see
Fig. 5.2.1.-5).
5.2. Interlocking
Closing the circuit breaker (CB) is permitted by the CLOSEENA input of the
I<->O CB1 function block. Different kinds of logics for permitting close operations
can be built by using the interlocking logic described in Fig. 5.2.-1 and
Fig. 5.2.1.-4.
The logic states of an earth switch (ES), a disconnector (DC), and general digital
inputs (DI1...DI9) can be used together with the interlocking logic in Fig. 5.2.-1.
Fig. 5.2.-1 Interlocking
5.2.1. Interlocking options
The interlocking options include only the closing of the circuit breaker. The opening
of the circuit breaker is always allowed. The settings are made via the HMI or the
Relay Setting Tool in a menu (
Main menu\Configuration\Input
Signals\Close enable
) where it is possible to manually set the interlocking
to TRUE or to Not connected (FALSE).
1. Standard configuration specific.
DI
DI1
DI2
DI9
...
Selector
1<-->0 CB
CB
ES pos. open
ES pos. close
DC pos. open
DC pos. close
Logic input 1
Logic input 2
Logic input 3
Interlocking_A
Interlocking_B
Interlocking_C
Interlocking_D
Interlocking_E
Close enable
Selector
Int
e
rl
ck
CB pos. open
CB pos. close
CLOSEENA &
Lockout working