Available Functions; Differential Protection; Impedance Protection - ABB Relion REG670 Product Manual

Generator protection REG670 ANSI
Customized
Product version: 1.2

2. Available functions

Main protection functions
2 = number of basic instances
0-3 = option quantities
IEC 61850 ANSI Function description

Differential protection

T2WPDIF 87T Transformer differential protection, two winding
T3WPDIF 87T Transformer differential protection, three winding
HZPDIF 87 1Ph high impedance differential protection
GENDIF 87G Generator differential protection
REFPDIF 87N Restricted earth fault protection, low impedance

Impedance protection

ZMHPDIS 21 Full-scheme distance protection, mho characteristic
ZDMRDIR 21D Directional impedance element for mho characteristic
PSPPPAM 78 Pole slip/out-of-step protection
LEXPDIS 40 Loss of excitation
10
1MRK 502 031-BUS B
Generator
REG670
0-2
0-2
0-6
0-2
0-3
0-4
0-2
0-1
0-2
ABB