Page 72 - SACE Tmax XT - Catalogue

t
t
state
3/38 steady I7 start-up t7 I SACE TMAX XT LOW VOLTAGE MOLDED CASE CIRCUIT-BREAKERS
I
— 100% 200% L
t t
50% 150%
Ekip Touch/Hi-Touch
I7
S
I
t7
Protection functions
I I
t t steady start-up
state
The Ekip Touch/Hi-Touch can be customized with the protection functions required.
I4
t4

t Extremely Inverse I I L – Overload (L - ANSI 49)
Very Inverse This function is used for protection against overloads. It allows the setting of the trip threshold, trip
Standard Inverse
t t t 100% 200% 8 time and pre-alarm threshold. Three different types of trip curves are available:
50% 150% 2
L 1. t = k/l with an inverse long time;
I3 I7 2. IDMT in accordance with IEC 60255-151 for coordination with medium voltage protection, available
S
I according to Standard Inverse (SI), Very Inverse (VI) and Extremely Inverse (EI) curves;
t7 I 3. With a t = k/l curve for better coordination with upstream circuit-breakers or fuses.
4
I I I
t
S – Time-delayed overcurrent (S - ANSI 51 & 50TD)
t t t steady U8
UV
t state start-up This function is used to protect against selective short-circuits. If necessary, it can be disabled, or if
needed, only the trip can be excluded keeping the alarm indication, to be used in installations where
I2 I4 t8 continuity of service is required. With a constant trip time (t = k), or constant specific let through
I7
t2 t4 V energy (t = k/l ).
2
t7 I I
t I I
I – Short-circuit
100% 200%
t t t t 50% 150% U9 This function is used for instantaneous protection against short-circuits. The trip threshold is
t steady L OV
I1
state I3 t1 start-up adjustable and, if needed, the protection can be disabled.
I7 S t8 t9
V
I
t7
I I I
t I I
t t G - Ground fault
UF
f12
t t steady start-up This function protects against earth faults. The trip threshold and trip time are adjustable. When
state 200%
100%
50% 150%
L needed, the protection can be disabled.
I2 I4 t12
t12
t2 t4 S f
I I
t I I
I
t t t 100% 200% f13 Neutral protection
OF
I1
t 50% 150% L This function is used to adjust the setting provided from protections L, S and I on the Neutral pole with a
I3 t1
t13 control factor which is different from the other phases. It is available with values at 50%, 100%, 150% or
S
I4 f 200% of the phase currents. It can be disabled if necessary.
t4 I
I I I
mean I
t
voltage unbalance
t t U14 2I - Second protection against instantaneous overcurrent
This function protects against the instantaneous short-circuit (e.g. I protection) and it is enabled with
I2
I4 I3 an activation event (or command), that can be programmed by the user. It can be activated for different
t2
U1 U2 U3
t4 uses in three ways:
I • locally, directly on the Ekip display unit
V1 I I • locally, with a smartphone with the EPiC app via Bluetooth
• locally, with a PC with the Ekip Connect program
t t senso ciclico
t I1 • remotely, via any Ekip Com module connected to the circuit-breaker
t1 • remotely, via a switch wired through an Ekip Signalling module.
I3
V3 V2 When active, the Ekip display unit will show a confirmation of the activation and a red LED alarm will
I2 flash on the diagnosis bar. Moreover, the second instantaneous tripping curve is designed to mitigate
t2
I I against arc flashes (also referred to as RELT - Reduced Energy Let-Through). This protection can be
I adjusted from 1.5 to 15 xIn with a maximum setting of 18kA. Easy activation and I/O assignment, inclu-
ding positive feedback, can be established using the RELT Ekip Signaling 2k-3 module.
t
t
I1
I2 t1
t2
I
I
t
I1
t1
I