ABB REQ650 Product Guide

Back-up protection functions
IEC 61850/
Function
block name
ANSI Function description Breaker
REQ650
REQ650 (A01) 3Ph/1CB/1BB REQ650 (A11) 1Ph/1CB/1BB REQ650 (B11) 1Ph/1CB/2BB
Current protection
PHPIOC 50 Instantaneous phase overcurrent
protection, 3–phase output
0–1 1
SPTPIOC 50 Instantaneous phase overcurrent
protection, phase segregated output
0–1 1 1
OC4PTOC 51 Four step phase overcurrent
protection, 3–phase output
0–1 1
OC4SPTOC 51/67 Four step phase overcurrent
protection, phase segregated output
0–1 1 1
EFPIOC 50N Instantaneous residual overcurrent
protection
0–1 1 1 1
EF4PTOC 51N/67N Four step residual overcurrent
protection, zero/negative sequence
direction
0–1 1 1 1
SDEPSDE 67N Sensitive directional residual
overcurrent and power protection
0–1 1 1 1
LCPTTR 26 Thermal overload protection, one time
constant, Celsius
0–1 1 1 1
LFPTTR 26 Thermal overload protection, one time
constant, Fahrenheit
0–1 1 1 1
CCRBRF 50BF Breaker failure protection, 3–phase
activation and output
0–1 1
CSPRBRF 50BF Breaker failure protection, phase
segregated activation and output
0–1 1 1
STBPTOC 50STB Stub protection 0–1 1 1 1
CCRPLD 52PD Pole discordance protection 0–1 1 1 1
BRCPTOC 46 Broken conductor check 0–1 1 1 1
GUPPDUP 37 Directional underpower protection 0–1 1 1 1
GOPPDOP 32 Directional overpower protection 0–1 1 1 1
DNSPTOC 46 Negative sequence based overcurrent
function
0–1 1 1 1
Voltage protection
UV2PTUV 27 Two step undervoltage protection 0–1 1 1 1
OV2PTOV 59 Two step overvoltage protection 0–1 1 1 1
Breaker protection REQ650 1MRK 505 283-BEN -
Product version: 1.2
8 ABB

ABB REQ650 Specifications

General

Brand	ABB
Model	REQ650
Category	Protection Device
Language	English