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Programmable logic for I/O configuration, alarms, indications, recording, etc.
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Automatic supervision
The GRL100 has the following models:
Relay Type and Model
Relay Type:
- Type GRL100; Numerical current differential relay
Relay Model:
- For two terminal line, With distance protection and autoreclose
• Model 701; 25 binary inputs, 19 binary outputs, 6 binary outputs for tripping
• Model 702; 28 binary inputs, 37 binary outputs, 6 binary outputs for tripping
- For three terminal line, With distance protection and autoreclose
• Model 711; 25 binary inputs, 19 binary outputs, 6 binary outputs for tripping
• Model 712; 28 binary inputs, 37 binary outputs, 6 binary outputs for tripping
Model
2- or 3-terminal line application
Segregated-phase current differential protection (DIF)
Zero-phase current differential protection (DIFG)
Charging current compensation (CCC)
Distance protection (DZ)
Power swing blocking (PSB)
Directional earth fault protection (DEF)
Switch-on-to-fault protection (SOTF)
Stub protection (STUB)
Phase overcurrent protection (OC)
Earth fault overcurrent protection (EF)
Thermal overload protection (THM)
Undervoltage protection (UV)
Overvoltage protection (OV)
Broken conductor detection (BCD)
Breaker failure protection (BF)
Out-of-step protection (OST)
Autoreclose (ARC)
Fault location (FL)
CT failure detection (CTF)
VT failure detection (VTF)
Table 1.1 GRL100 Models
701B
2-terminal
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
10
6 F 2 S 0 8 5 0
702B
711B
2-terminal
3-terminal
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
712B
3-termnal
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
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