Application Notes - Toshiba GRT100 Series Instruction Manual

2. Application Notes

2.1 Application
The GRT100 provides high-speed transformer and reactor protection, and realises high
dependability and security for diverse faults such as single-phase faults, multi-phase faults,
overload and over-excitation.
The GRT100 is used as a main protection and backup protection of the following transformers
and reactors.
 Two-winding or three-winding power transformers
 Auto-transformers
 Generator-transformer units
 Shunt reactors
The GRT100 provides the stabilization for magnetizing inrush and overexcitation.
GRT100 provides the following metering and recording functions.
 Metering
 Fault records
 Event records
 Disturbance records
GRT100 provides the following human interfaces for relay setting or viewing of stored data.
 Relay front panel:
 Local PC
 Remote PC
The relay can be integrated with a local PC or a remote PC through a communication port.
A local PC can be connected via the RS232C port on the front panel of the relay. A remote PC
can also be connected through the RS485 port on the rear panel of the relay.
LCD, LED display and operation keys
 9 
6 F 2 S 0 7 8 9