ABB ret650 - Available Functions

3. Available functions
Main protection functions
IEC 61850 or
Function name
ANSI Function description Transformer
RET650
RET650 (A01)
2W/1CB
RET650 (A05)
3W/1CB
RET650 (A07)
OLTC
Differential protection
T2WPDIF 87T Transformer differential protection, two winding 0–1 1
T3WPDIF 87T Transformer differential protection, three winding 0–1 1
REFPDIF 87N Restricted earth fault protection, low impedance 0–3 2 3
HZPDIF 87 1Ph High impedance differential protection 0–2 2 2
Impedance protection
ZMRPSB 68 Power swing detection 0–1
ZGCPDIS 21G Underimpedance protection for generators and transformers 0–1
LEPDIS Load encroachment 0–1
Transformer protection RET650
1MRK 504 137-BEN B
Product version: 1.3
ABB 7