ABB Relion - Page 41

LED 2
SELGAPC4
OUT_2
IN_9
OSWGAPC8
OR
OUT
IN_4
IN_5
IN_6
UNDERVOLTAGE PROTECTION INDICATION
PHPTUV1
3U<(1)
27(1)
BLOCK START
OPERATE3U
PHPTUV2
3U<(2)
27(2)
BLOCK START
OPERATE3U
PHPTUV3
3U<(3)
27(3)
BLOCK START
OPERATE3U
GUID-0E0A1B18-45A8-4FDB-BCFB-9FFC175CD53B V1 EN
Figure 16: Undervoltage protection
Three undervoltage protection stages PHPTUV1...3 offer protection against
undervoltage conditions. All operate signals are connected to the master trip and to
alarm LED 2.
1MRS758335 B Section 3
REU611 standardized configuration
REU611 35
Application Manual