(15)
DIR 1000587R0002 (Version 02)
3.3.3. Inputs/Outputs
LISG-MM is equipped with:
- K14/K15, input contact for activating protection MM.
- 95S/98S: output contact which supplies the state of protection MM.
Consult chapter 3.8.3 Function MM for further details.
3.3.4. Accessories
A set of accessories adds optional functions to the basic version.
- External neutral, current sensor for protecting the external neutral pole (can only be confi gured for three-pole circuit-breakers).
- Battery unit allows the trip unit to be temporarily energized so as to view its state (via the LEDs) and perform installation.
More details are given from page page page 36 of chapter 4, or in the dedicated manuals.
3.3.5. CB
compatibility
LSIG-MM can be installed on all three-pole, three-pole with external neutral or four-pole 140G-N, 140G-NS, 140G-R Frames.
The CB model establishes the rated uninterrupted current the circuit-breaker is able to support (lu).
The adjustable protections refer to size In, defi ned by the interchangeable Rating plug module, installed in the trip unit.
3.3.6. Standards
LSIG-MM has been designed to operate in accordance with the following international standards:
- IEC 60947-2 Low voltage switchgear and control gear Part 2: Circuit-Breakers.
- UL 489 Molded-Case Circuit-Breaker, Molded-Case Switches and Circuit-Breaker Enclosures.
- CSA C22.2 No. 5, Molded-Case Circuit-Breaker, Molded-Case Switches and Circuit-Breaker Enclosures.
3.3.7. Environmental
characteristics
Operating temperature (Standard version)
-25°C ... +70°C
Storage temperature
-40°C ... +70°C
Relative humidity
0% ... 98% with condensation
Degree of protection (with trip unit installed in the CB).
IP 30
3.3.8. Electrical
characteristics
The trip unit is energized:
- Directly by the internal current sensors connected to the busbars of each phase. In this case, the trip unit activates with the
circuit-breaker closed and in the presence of a minimum three-phase current value.
- By an external auxiliary power supply. In this case, continuous operation of the unit is guaranteed even with no current on the
busbars or with the circuit-breaker open.
Primary current characteristics
Range
Minimum three-phase busbar current (Low Power)
> 80A
Minimum three-phase busbar current (Full Power)
> 160A
Rated operating frequency
50/60Hz ±10%
Auxiliary supply characteristics
Activation of display lighting
(3)
DC voltage (galvanically separated)
24 Vdc ±20%
Maximum ripple
5%
Inrush current @ 24Vdc
~2 A for 5ms
Rated power @ 24Vdc
~3 W
ATTENTION: Separate DC power source must be galvanically separated from ground, in accordance with
UL 60950 (IEC 60950) or equivalent IEC 60364-41 [CEI 64-8].
If supplied by primary current or voltage, LSIG-MM includes 3 different operating modes, depending on the level of the supply
signals:
- Low Power: this mode guarantees operation of all the protections provided by the tip unit, operation of the front LEDs and
display energizing in the Low Power mode, but access to the menus is not allowed.
- Full Power: this mode guarantees operation of all the protections provided by the trip unit, operation of the front LEDs and
display energizing in the Full Power mode. Access to the menus is also allowed.
- Full Power and display lighting: this mode includes all the Full Power functions and powers the display lighting system.
