LEGRAND Trimod HE, Руководство пользователя

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Dual input
Trimod HE has two input disconnectors, one for the mains and the other for powering the load by means of a bypass
line completely indipendent from the mains. The two lines are interconnected by default and they may be rendered
indipendent during the installation or commissioning of the equipment (the neutral cables of the two lines must be in
common).
Power module
The high-efficiency single phase module, available in three power sizes of 3400 VA (PM4), 5000 VA (PM6) and 6700 VA
(PM7) respectively, is mainly made up of the following functional blocks:
- command and control logic (managed by a microprocessor);
- PFC rectifier/booster;
- inverter;
- battery charger;
- automatic bypass.
In each power module there is a microcontroller that can oversee the main functions of the individual unit, monitor its
correct functioning and flag up any malfunctions.
The power module is Plug & Play to make the power expansion and any maintenance operation easier. Every module is
put in parallel with other identical ones until reaching the power of the UPS.
The power modules are independent of each other and can function even if there is a fault in one of them. At the front
of the module there is a multicoloured LED with traffic-light code green-yellow-red, making it possible to identify the
functioning status of the electronic unit quickly.
The power modules are housed on shelves also called tunnels that can house three modules.
The block diagram of the power module is the following:
Batteries
The battery modules are designed for easy insertion into the dedicated cabinet and they do not need any operation for
their positioning: their lightness makes them simple to handle and therefore easy to maintain or replace. A drawer consists
of five 12 V 7.2 Ah or 9 Ah batteries, connected in series and thanks to the Plug & Play connection it is easy to extract and
insert it in the cabinet.
The nominal battery voltage for the Trimod HE is 240Vdc, therefore a complete branch consists of four battery drawers (for
a total of twenty 12Vdc batteries) that form what is called KB (Battery Kit).
In order to ensure the maximum level of safety, especially during maintenance, the voltage of each drawer is properly
isolated into two branches of 24 V and 36 V and it is only restored when the drawer is completely inserted into its housing.
This allows conformity with the standard EN 62040-1 on electrical safety that requires the use of adequate protection and
particular care when handling dangerous voltages above 50 Vdc where direct contact is possible.
The autonomy can be further increased by adding more battery drawers in multiples of four, using both the seats in the
UPS cabinet if available, and the seats in the additional modular battery cabinets.
3. Technological description