ABB | SACE Emax 2
92 | © 2013 ABB | 1SDH001000R0002 - L7804
Ekip Touch protection release | 9 - Touch protections
Protection T
Path
Main page - Menus - Settings - Circuit-breaker
Function
The protection T protects the circuit-breaker against abnormal temperatures recorded by the
release.
It is always active, and has two states, according to the temperature read:
State Temperature Range Release actions
Warning -25 < t <-20 or 70 < t < 85 Display off; Warning LED on @ 0.5Hz.
Alarm t <-25 or t>85
Display off; Alarm and Warning LEDs
on @2Hz; Circuit beaker opening
command.
IMPORTANT: the opening command is sent only if the parameter Trip Enable
is ON.
The protection T has Trip Enable, see page 93.
Neutral
Path
Main page - Menus - Settings - Circuit-breaker
Function
The purpose of the Neutral protection is to characterize the protections L, S and I on the
Neutral pole with a control factor different to the other phases.
IMPORTANT: the protection is available with four-pole circuit-breakers (4P)
or three-pole circuit-breakers with external neutral (3P+N).
Parameters
The following is a description of the parameters:
Parameter Description
Enabling
Activates/deactivates the protection.
NOTE: with a 4P circuit-breaker and neutral Off, the
measurement of the current is provide in any case.
Neutral
threshold
Represented as a percentage; it defines the multiplication factor of
the neutral current, for calculating the activation threshold of the
protections:
• 50%: lowest tripping threshold (in reference to the curves of the
protections, the Neutral current is considered double the real one).
• 100%.
• 150%.
• 200%: highest tripping threshold (in reference to the curves of the
protections, the Neutral current is considered double the real one).
Limitations
The adjustment of the Neutral threshold to values of 200% and 150% must be performed
considering the following formula: (I1 x InN) ≤ Iu
Where InN is the Neutral threshold set, and Iu the rated current of the circuit-breaker.
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