Technical information

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1SDC210033D0202
Ekip N-LS/I
Protection function Trip threshold Time-current curve
(1)
Excludability Relation Thermal
memory
Against overloads with inverse
long-time delayed tripping.
According to IEC 60947-2
Standard
Manual setting:
I
1
= 0.4...1xIn step 0.04
Tolerance: trip between
1.05…1.3xI
1
(IEC 60947-2)
Manual setting:
t
1
= 12-36s at I= 3xI
1
Tolerance: ±10% up to 4xIn
±15% from 4xIn
– t = k/l
2
Yes
Against short-circuits with
inverse short indipendent time
delay trip (t=k)
Manual setting:
I
2
= 1-1.5-2-2.5-3-3.5-4.5-5.5-
6.5-7-7.5-8-8.5-9-10xIn
Tolerance: ±10%
t
2
= 0.1-0.2s
Tolerance: ±15%
Yes t = k –
Against short-circuits with
istantaneous trip time
Manual setting:
I
3
= 1-1.5-2-2.5-3-3.5-4.5-5.5-
6.5-7-7.5-8-8.5-9-10xIn
Tolerance: ±10%
)20ms Yes t = k –
Test connector
Power-on LED
L, S, I protection LED
Dip switch for the trip curve selection
Dip switch for LS/I protection function setting
Dip switch for the selection between S
protection function or I protection function
Dip switch for
neutral selection
(1)
Tollerances in case of:
– self-powered trip unit at full power;
– 2 or 3 phase power supply.
In conditions other than those considered, the following tollerance hold:
Protection Trip threshold Trip time
L
release between 1.05 and 1.3 x I
1
±20%
S
±10% ±20%
I
±15% )60ms
Ekip N-LS/I
Main characteristics:
Q available for XT2 and XT4 in the four-pole version;
Q protections:
– against overload (L): I
1
=0.4...1xIn adjustable protection threshold, with inverse long-time trip
curve;
– against delayed short-circuits (S): 1...10xIn adjustable protection threshold, with adjustable
trip curve (as an alternative to I protection);
– against instantaneous short-circuit (I): 1...10xIn adjustable protection threshold, with instan-
taneous operating time (as an alternative to S protection);
– neutral can be set in the OFF or ON positions, at 100% or at 160% of the phases;
Q manual setting using the relative dip-switches on the front of the trip unit, which allow the set-
tings to be made even when the trip unit is off;
Q LED:
– LED on with steady green light indicating that the trip unit is supplied correctly. The LED
comes on when the current exceeds 0.32xIn;
– red LED for each protection:
- L: LED with steady red light, indicates pre-alarm for current exceeding 0.9xI
1
;
- L: LED with fl ashing red light, indicates alarm for current exceeding setted threshold;
- LS/I: LED with steady red light, shows that the protection has tripped. After the circuit-
breaker has opened, connect the Ekip TT or Ekip T&P accessory to fi nd out which protec-
tion function tripped the trip unit;
– Ekip N-LS/I is equipped with a device that detects whether the opening solenoid has discon-
nected. Signalling is made by all the LEDs fl ashing simultaneously;
Q test connector on the front of the release:
– to connect the Ekip TT trip test unit which allows trip test, LED test and signalling about the
latest trip happened;
– for connecting the Ekip T&P unit, which allows the measurements to be read and the trip test
to be carried out;
Q thermal memory which can be activated by Ekip T&P;
Q self-supply from 0.32xIn.
Slot for lead seal
Circuit-breakers for oversized neutral protection
Main characteristics