ABB SACE Emax 2, Instructions For Use Manual

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ABB | SACE Emax 2
12 | © 2018 ABB | 1SDH001316R0002 - ECN000086018 - Rev. C Ekip Touch protection trip unit | 6 - Touch protections
6 - Touch protections
Availability (Performance)
The following is a complete list of the protections (and related parameters) available with all the trip units
equipped with a display, in the Protections and Advanced menus:
Name Protection against Threshold Time Function Auxiliary functions
(5) (8)
L
(1)
Overload with long-time
delay
X X X
Thermal memory, Pre-alarm
threshold
S
(9)
Selective short-circuit X X X
Trip enable, Zone Selectivity,
Thermal Memory, Startup
enable, Lock
I
(2)
Instantaneous
short-circuit
X -- -- Startup enable, Lock
G
(4)(6)(9)(10)
Earth fault X X X
Trip enable, Zone Selectivity,
Startup enable, Locking,
Pre-alarm threshold
2I
Instantaneous short-
circuit programmable
X -- -- --
MCR
(3)
Instantaneous short
circuit on closing
X -- -- Monitoring period, Locking
IU Current unbalance X X -- Trip enable
OT
(7)
Temperature outside
range
-- -- -- Trip enable
IInst
Instantaneous
short-circuit
-- -- -- --
Hardware
Trip Circuit-breaker internal
connection error
-- -- -- --
Harmonic
Distortion
Distorted waveforms -- -- -- --
Current
thresholds
(11)
Programmable signal
thresholds
X -- -- Direction of current flow
Neutral Neutral protection X -- -- --
(1)
The protection forces the tripping time to 1 second in two cases:
• if according to the calculation the time is less than 1 second.
• if the fault current is greater than 12 In.
(2)
Activatable with protection MCR= Off.
(3)
Activatable with protection I= Off.
(4)
The protection automatically deactivates in the event of a connection error of 1 or more sensors, or if the
measured current is higher than a maximum value:
• 8 In (with I4
≥
0.8 In).
• 6 In (with 0.5 In
≤
I4 < 0.8 In).
• 4 In (with 0.2 In
≤
I4 < 0.5 In).
• 2 In (with I4 < 0.2 In)
(5)
Detailed description in the Design Engineer's manual.
(6)
If the presence of sensor S.G.R. is activated, G protection adjustment is replaced by the Gext item in the
Advanced section. Both the G and Gext items are available with Ekip Hi-Touch and Ekip G Hi-Touch.
(7)
Available in the Circuit-Breaker Settings menu.
(8)
Locking Function available via Ekip Connect.
(9)
For all the UL versions the maximum time allowed by the trip unit is 0.4 seconds. If a higher value is set, the
trip unit signals the error and forces the parameter to 0.4 seconds.
(10)
For all the UL versions the maximum threshold allowed by the trip unit is 1200 A. If a higher value is set, the
trip unit signals the error and forces the parameter to 1200 A.
(11)
The current thresholds do not manage the trip, but only the signal.
Neutral
Adjusting of the neutral setting is used to customize the L, S and I protections on the Neutral pole with a
control factor different from the other phases.
Represented as a percentage, it defines the multiplication factor applied to the tripping thresholds of the
protections (example: 50%= the tripping threshold of the neutral is half the phase threshold).
NOTE: adjust the neutral setting only with four-pole or three-pole circuit-breakers with external
neutral.