53
EATON
www.eaton.com
5.5 Fault data
Int
Event type
Meaning
Unit
Variant format
0
Overload fault, instantaneous fault, short circuit interlocking,
ground interlocking, short circuit fi xed/inverse time protection,
ground/residual current protection, test overload fault, test
short circuit fault, test ground/residual current fault
Fault current
A
×1 or ×2
Note 1
Residual current: ×0.01
Test Residual current: ×0.01
Current imbalance protection
Max. current imbalance
%
×1
Phase A demand protection
Phase A fault demand
A
×1 or ×2
Note 1
Phase B demand protection
Phase B fault demand
A
×1 or ×2
Note 1
Phase C demand protection
Phase C fault demand
A
×1 or ×2
Note 1
N-phase demand protection
N-phase fault demand
A
×1 or ×2
Note 1
Under voltage protection
Max. fault line voltage
V
×1
Over voltage protection
Min. fault line voltage
V
×1
Voltage imbalance protection
Max. voltage imbalance
%
Under frequency protection
Over frequency protection
Fault frequency
Hz
×0.01
Phase sequence protection
Fault phase sequence
1: ABC
2: ACB
Reverse power protection
Fault power
kW
×1 (signed integral)
MCR/HSIS, test MCR/HSISC
N/A
1
Delay time (low word)
S
/50
2
Delay time (high word)
3
Fault set action value
Unit: kA for MCR/HSISC and test MCR/
HSISC; for other faults, refer to protection
settings
4
Overload fault, short delay fi xed/inverse time fault,
instantaneous fault, ground/residual current fault, current
imbalance fault, maximum demand overfl ow, reverse
power fault, DI input trip, ground interlocking, short circuit
interlocking, test overload fault, test short circuit fault, test
instantaneous fault, test ground/residual current fault
Phase A current
A
×1 or ×2
Note 1
Phase sequence fault, under frequency fault, over frequency
fault, under voltage fault, over voltage fault, voltage
imbalance fault
Uab
V
×1
5
Overload fault, short delay fi xed/inverse time fault,
instantaneous fault, ground/residual current fault, current
imbalance fault, maximum demand overfl ow, reverse
power fault, DI input trip, ground interlocking, short circuit
interlocking, test overload fault, test short circuit fault, test
Instantaneous fault, test ground/residual current fault
Phase B current
A
×1 or ×2
Note 1
Phase sequence fault, under frequency fault, over frequency
fault, under voltage fault, over voltage fault, voltage
Imbalance fault
Ubc
×1
6
Overload fault, short delay fi xed/inverse time fault,
instantaneous fault, ground/residual current fault, current
imbalance fault, maximum demand overfl ow, reverse
power fault, DI input trip, ground interlocking, short circuit
interlocking, test overload fault, test short circuit fault, test
instantaneous fault, test ground/residual current fault
Phase C current
A
×1 or ×2
Note 1
Phase sequence fault, under frequency fault, over frequency
fault, under voltage fault, over voltage fault, voltage
imbalance fault
Uca
×1
7
Overload fault, short delay fi xed/inverse time fault,
instantaneous fault, ground/residual current fault, current
imbalance fault, maximum demand overfl ow, reverse
power fault, DI input trip, ground interlocking, short circuit
interlocking, test overload fault, test short circuit fault, test
instantaneous fault, test ground/residual current fault
N-phase current
A
×1 or ×2
Note 1
Phase sequence fault, undervoltage fault, overvoltage fault,
voltage imbalance fault
System frequency
Hz
×0.01
Instruction Leafl et
Effective September 2022
IZM6 Series Air Circuit Breaker
Operating Instruction Leafl et