Connecting The Ac Supply Sources; Connecting The Communications Cables - Whisper Power 12-2000 User Manual

If the assistance function at the source (Smart Boost) is not used, the size of the protection device for the output (F) will
be established at a maximum value equal to the rated current of the inverter, or at the maximum value of the protection
device at the input (H) if this is exceeds the rated current of the inverter.
Due to the source assistance function (Smart Boost) the current at the output of the device may be higher
than the rated current of the inverter. It is the sum of the current supplied by the additional source
(shore/generator) and the current supplied by the inverter. In this case, the dimensioning of the output
cables will be carried out by adding the current indicated on the protection device (H) located on the
upstream of the unit, to the nominal current of the inverter. (See also chap. 7.2.5 – p. 28)
Sizing of AC output protective devices (only applicabel for WPC 5000-24)
If protective devices are installed at the output of specifically the WPC 5000-24, we recommend B curve devices. They
will be sized at maximum to the highest value listed on the unit's nameplate or by the addition of the first value plus
the value of the input protective device. (i.e. inverter current + input current).
Cross-sections of downstream wiring must be sized accordingly.
No downstream protective device is formally required if cross-sections of cable used for distribution satisfy
regulatory requirements for the largest rated output current listed on the nameplate at the point (37) of
Appendix 1a.

4.5.7 Connecting the AC supply sources

The WPC is intended to be supplied by alternative voltage sources such as the public grid and/or a generator. Check
that the rated voltage of the source corresponds to the rated voltage (34) of the WPC specified on the type plate (fig.
1b).
The source must be connected to the input terminals marked "AC INPUT" (13) with sufficient wire section, depending
on the power output of the source, and protected by a protection device of the appropriate calibre. This will be at the
maximum equal to the current I AC in max (35) specified on the type plate. The terminals are marked in the following
way:
N = neutral, L = live, PE = protective earth (connected to the enclosure of the device).
An additional earthing terminal (17) is present between the two fastening screws at the bottom of the unit.
It can be used instead of a connection on the input terminals of the device, particularly when cable cross-
sections used at the output do not allow the use of a three-wire cable (live, earth and neutral) through the
conduit glands of the connection cables of the input and output (AC IN and AC OUT), or when the earthing
of one of the poles of the battery. PE required using same or greater cross-sections than the battery cable.
Any unused cable gland on the unit must be properly closed.
If not, there is a high risk of intrusion of small animals inside the unit and a risk of damage not covered by
warranty
4.5.8 Wiring auxiliary contacts (only applicable for WPC 5000-24)
These contacts are reversing contacts that are potential-free available in the WPC 5000-24 unit.. The admissible
currents and voltages are 16 A: 250 Vac/24Vdc or 3 A: 50 Vdc max. The contact is shown as activated when the
corresponding LED is lit. The representation of the contact near the terminals corresponds to the status of the contact
when not activated.
The cabling of these auxiliary contracts depends solely on the chosen application and on the specific programming
applied and cannot be described in this manual.
To dedicate/program particular functions to these contacts, please refer to user manual of the remote control unit
WP-RCC.
The factory-set functions for these auxiliary contacts are covered in section 7.5.
February 2020/ WPC / EN
ASSEMBLY AND INSTALLATION
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