4.2 Connection of the AC cabling
The ECOmulti is a safety class I product (supplied with a ground terminal
for safety purposes). Its AC input and/or output terminals and/or
grounding point on the outside of the product must be provided with
an uninterruptible grounding point for safety purposes.
The ECOmulti is provided with a ground relay (relay H, see appendix B)
that automatically connects the Neutral output to the chassis if no
external AC supply is available. If an external AC supply is provided, the
ground relay H will open before the input safety relay closes. This ensures
the correct operation of an earth leakage circuit breaker that is connected
to the output.
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In a fixed installation, an uninterruptable grounding can be secured by
means of the grounding wire of the AC input. Otherwise the casing
must be grounded.
Torque: 2 Nm max. 2.3 Nm
The terminal blocks can be found on the printed circuit board, see Appendix A.
Do not invert neutral and phase when connecting the AC.
•
AC-in
The AC input cable can be connected to the terminal block 'AC–in'.
From left to right: 'L' (phase) 'N' (neutral) and 'PE' (earth).
This product can cause a d.c. current in the external protective earthing conductor. Where a residual current-operated
protective (RCD) or monitoring (RCM) device is used for protection in a case of direct or indirect contact, only an RCD or
RCM of Type B is allowed on the supply side of this product
The AC input must be protected by a fuse or magnetic circuit breaker rated at 50A or less, and cable cross-section must
be sized accordingly. If the input AC supply is rated at a lower value, the fuse or magnetic circuit breaker should be down sized
accordingly.
•
AC-out-1
The AC output cable can be connected directly to the terminal block 'AC-out'.
From left to right: 'L' (phase) 'N' (neutral) and 'PE' (earth).
With its PowerAssist feature the ECOmulti can add up to 3kVA (that is 3000 / 230 = 13A) to the output during periods of peak
power requirement. Together with a maximum input current of 50A this means that the output can supply up to 50 + 13 = 63A.
An earth leakage circuit breaker and a fuse or circuit breaker rated to support the expected load must be included in series with the
output, and cable cross-section must be sized accordingly.The maximum rating of the fuse or circuit breaker is 63A.
•
AC-out-2
See section 4.3.1.
4.3 Optional Connections
A number of optional connections are possible:
4.3.1 Remote Control
The product can be remotely controlled in two ways.
•
With an external switch (connection terminal H, see appendix A). Operates only if the switch on the ECOmulti is set to 'on'.
•
With a Multi Control panel (connected to one of the two RJ48 sockets B, see appendix A). Operates only if the switch on the
ECOmulti is set to 'on'.
Only one remote control can be connected, i.e. either a switch or a Multi control panel.
4.3.2 Programmable relays
The product is equipped with three programmable relays.
The relays can be programmed for all kinds of other applications however, for example as a starter relay for a generator.
4.3.3 Programmable analog/digital input/output ports
The product is equipped with 2 analog/digital input/output ports.
These ports can be used for several purposes.
4.3.4 Auxiliary AC output (AC-out-2)
Besides the usual uninterruptable output, a second output (AC-out-2) is available that disconnects its load in the event of battery
operation. Example: an electric boiler or air conditioner that is allowed to operate only if the genset is running or shore power is
available.
In case of battery operation, AC-out-2 is switched off immediately. After the AC supply has become available, AC-out-2 is reconnected
with a delay of 2 minutes, this to allow a genset to stabilise prior to connecting a heavy load.
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