GE M60

5-262 M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
GROUPED ELEMENTS CHAPTER 5: SETTINGS
5
The ground instantaneous overcurrent element can be used as an instantaneous element with no intentional delay or as a
definite time element. The ground current input is the quantity measured by the ground input CT and is the fundamental
phasor magnitude.
Figure 5-141: Ground IOC1 logic
5.7.9 Breaker failure (ANSI 50BF)
SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)  BREAKER FAILURE  BREAKER FAILURE 1(2)

GROUND IOC1 RESET
DELAY: 0.00 s
Range: 0.00 to 600.00 s in steps of 0.01

GROUND IOC1 BLOCK:
Off
Range: FlexLogic operand

GROUND IOC1
TARGET: Self-reset
Range: Self-reset, Latched, Disabled

GROUND IOC1
EVENTS: Disabled
Range: Disabled, Enabled
These elements measure the current that is connected to the ground channel of a CT/VT module. The conversion
range of a standard channel is from 0.02 to 46 times the CT rating.
This channel can be equipped with a standard or sensitive input. The conversion range of a sensitive channel is
from 0.002 to 4.6 times the CT rating.
 BREAKER FAILURE 1


BF1 FUNCTION:
Disabled
Range: Disabled, Enabled

BF1 MODE:
3-Pole
Range: 3-Pole, 1-Pole

BF1 SOURCE:
SRC 1
Range: SRC 1, SRC 2, SRC 3, SRC 4

BF1 USE AMP SUPV:
Yes
Range: Yes, No

BF1 USE SEAL-IN:
Yes
Range: Yes, No

BF1 3-POLE INITIATE:
Off
Range: FlexLogic operand

BF1 BLOCK:
Off
Range: FlexLogic operand