Legrand TRIMOD HE 15 kVA Технические характеристики онлайн [7/14] 151430

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! Automatically transfer back the load from the mains to the inverter as soon the anomalous

event expires;

! Automatically disable the bypass function in case of output voltage and Mains are not

synchronized.

3.2 COMMAND BOARD

The Command board must be equiped with microprocessor of suitable computation power. This

command board must manage all functions of the UPS and will execute the following jobs:

1. automatic recognition of the number of connected modules;

2. automatic setting of the maximum reactive power that can be provided on the output;

3. individual serial communication with the power modules by a dedicated line;

4. recognition of a faulty module and diagnosis of the relevant fault;

5. synchronization of the output voltage with the input voltage;

6. generation of a reference sinewave curve to form the output voltage wave;

7. control of the PFC, inverter and booster circuits in each power module;

8. management of the automatic bypass;

9. management of the battery runtime (see relative section);

10. management and recognition of the signals and measurements from each module;

11. management of the user interface (see relative section);

12. management and memorizing of UPS history parameters and data;

13. alarm and events memory with association of the time and date of the events themselves.

3.3 Batteries

3.3.1 Battery type

The hermetic, maintenance-free stationary lead batteries are housed in the UPS and/or in one of more

cabinets of the same shape and size as that of the UPS itself. The positive and negative battery

connections are protected by an adequate fuse-holder isolating switch.

3.3.2 Battery Module (Drawer)

The complete set of batteries consists of at least 20 units so as to obtain an overall 240 V nominal

voltage (direct voltage).

A drawer comprises five 12 V 7.2 Ah or 9 Ah batteries connected in series. The drawer must complies

with CEI-EN 60950 standards governing electrical safety, which requires the use of adequate protections

and particular care when dangerous voltages higher than 50 Vdc are present and direct contacts are

possible.

The runtime can be increased to a further extent by adding more battery drawers in multiples of four,

using both the housings in the UPS and those pre-engineered in the additional “modular cabinets”.

3.3.1

Battery management

The following functions must be available:

Conduction of the battery test either automatically or upon the user’s request.

Battery efficiency test conducted by making an automatic full discharge at programmed or periodic

frequencies, as required by the user. The battery is discharged by use of an appropriate algorithm with

discharge curve control so as to monitor the performance and status of the batteries.

Calculation of the residue battery runtime during the discharge phase, depending on the load applied.