Applications
GARD 8000 SYS RFL Electronics
May 1, 2013 2-24 973.334.3100
The TPS is supplied on the Display With TPS board in the Base System but additional TPS modules
can be added to the chassis. The TPS provides 8 functions per 56/64 kbps channel and any channel can
be programmed to use any communication interface. Up to 4 channels are supported giving a total of
32 functions for one single TPS. Each function is separately configured for permissive, unblocking,
blocking or transfer trip. Customized logic can also be used.
The TPS provides diagnostics as described in detail in the Teleprotection System manual.
2.8.1 OPTIONAL 96-BIT TELEPROTECTION SYSTEM
This system provides a single 64 kbps channel for customized programmable logic.
1 to 96 functions per digital interface
(TX and RX are independently selectable)
Settable input de-bounce and continuation timers
Selectable security count
Maximum operating time is 7.5 ms to 12.5 ms depending on acceptance settings, and excludes
communication delays
2.9 DISTANCE PROTECTION TERMINAL
The Distance Protection Module is a full featured protection terminal. It can be used as a stand-alone
non-pilot or pilot distance protection system, or can operate in parallel with the GARD 8000 Current
Differential Protection Module providing an independent and different measuring principle.
The distance protection has 4 measuring zones, where any zone can be set forward or reverse.
The distance protection can operate as a channel independent stepped distance protection or be applied
in a pilot scheme; selectable to permissive, unblocking or blocking. It may use the same
communications channel interface as the current differential relay or a separate communications
interface.
Features include:
4 zones, all reversible
Phase-phase and phase-ground mho
Selectable phase-ground quadrilateral characteristic
POTT, DCUB or DCB pilot schemes
High-set and inverse time overcurrent elements
Breaker failure protection
Redosing and sync check
Under- and overvoltage elements
Accurate Fault Locator
Digital fault records directly in COMTRADE format
Optional single pole trip logic
Metering
Breaker monitoring
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